阅读说明：本技术 一种基于正方形布料的零浪费服装生产方法及可变服装 (Zero-waste garment production method based on square cloth and variable garment ) 是由 姚岚 于 2021-06-24 设计创作，主要内容包括：本发明公开了一种基于正方形布料的零浪费服装生产方法及可变服装。该可变服装包括呈相同的四边形的一号四边布片、二号四边布片、三号四边布片和四号四边布片。各四边形由底边重合的外直角三角形和内直角三角形拼接形成。外直角三角形对应原料布片的角部,为非等腰直角三角形；内直角三角形对应远离布片的中部,为等腰直角三角形。外直角三角形的两条直角边分别为长外直角边和短外直角边。内直角三角的两条直角边分别为第一内直角边和第二内直角边。本发明通过对正方形的原料布片进行裁剪和重新拼接,能够得到多种不同款式的连衣裙,且在使用可拆的布料连接件的情况下,各款式的连衣裙能够在使用中相互切换,增加使用者的穿衣乐趣。(The invention discloses a zero-waste garment production method based on square cloth and a variable garment. The variable garment comprises a first four-side cloth piece, a second four-side cloth piece, a third four-side cloth piece and a fourth four-side cloth piece which are in the same quadrilateral shape. Each quadrangle is formed by splicing an outer right-angled triangle and an inner right-angled triangle with overlapped bottom edges. The outer right-angled triangle is a non-isosceles right-angled triangle corresponding to the corner of the raw material cloth piece; the inner right-angled triangle is correspondingly far away from the middle part of the cloth piece and is an isosceles right-angled triangle. Two right-angle sides of the outer right-angle triangle are respectively a long outer right-angle side and a short outer right-angle side. Two right-angle sides of the inner right-angle triangle are respectively a first inner right-angle side and a second inner right-angle side. According to the invention, the square raw material cloth pieces are cut and spliced again, so that the one-piece dress with various different styles can be obtained, and under the condition of using the detachable cloth connecting piece, the one-piece dresses with various styles can be mutually switched in use, so that the clothes wearing fun of a user is increased.)

1. A zero-waste garment production method based on square cloth is characterized by comprising the following steps: step one, taking a square raw material cloth piece;

step two, two mutually perpendicular partition lines are made through the geometric center point of the raw material cloth piece to form four same quadrangles; each quadrangle is formed by splicing an outer right-angled triangle and an inner right-angled triangle with overlapped bottom edges; the outer right-angled triangle is a non-isosceles right-angled triangle; the inner right-angled triangle is an isosceles right-angled triangle; two right-angle sides of the outer right-angle triangle are respectively a long outer right-angle side and a short outer right-angle side; two right-angle sides of the inner right-angle triangle are respectively a first inner right-angle side and a second inner right-angle side; four corners of each quadrangle are respectively an inner right angle point, an obtuse angle point, an outer right angle point and an acute angle point;

step three, dividing the raw material cloth piece into a first four-side cloth piece (1), a second four-side cloth piece (2), a third four-side cloth piece (3) and a fourth four-side cloth piece (4) along two dividing lines;

step four, producing the clothes by utilizing the first four-side cloth piece (1), the second four-side cloth piece (2), the third four-side cloth piece (3) and the fourth four-side cloth piece (4), and specifically adopting any one of the following four schemes:

the first scheme is as follows: overskirt

Sequentially connecting the outer short right-angle sides of the first four-side cloth piece (1), the second four-side cloth piece (2), the third four-side cloth piece (3) and the fourth four-side cloth piece (4) to form a rhombic waist opening, and respectively connecting the adjacent side edges of the first four-side cloth piece (1) and the second four-side cloth piece (2), the adjacent side edges of the second four-side cloth piece (2) and the third four-side cloth piece (3), the adjacent side edges of the third four-side cloth piece (3) and the fourth four-side cloth piece (4), and the adjacent side edges of the fourth four-side cloth piece (4) and the first four-side cloth piece (1) together through separable connecting pieces;

scheme II: the lower hem is knotted with a V-collar upper garment;

firstly, the first four-side cloth piece (1) and the second four-side cloth piece (2) are placed together in a crossed mode to obtain a front cut piece; the third four-side cloth piece (3) and the outer long right-angle side of the fourth four-side cloth piece (4) are placed together in a crossing mode to obtain a rear garment piece;

secondly, overlapping the front garment piece and the rear garment piece together to form a garment body main body; connecting the top of the front cut piece and the top of the rear cut piece together to form two shoulder sewing lines of the clothes body main body; respectively connecting two side edges of the front cut piece with two side edges of the rear cut piece to obtain two side seams of the clothes body main body; an armhole is reserved at the top of each side seam; tying the bottoms of the first four-side cloth piece (1) and the second four-side cloth piece (2) on the front garment piece; tying the bottoms of the third four-side cloth piece (3) and the fourth four-side cloth piece (4) on the rear garment piece;

the third scheme is as follows: cross knotting jacket

Firstly, connecting outer right-angle points on a first four-side cloth piece (1) and a second four-side cloth piece (2) together to form a front garment body as the middle point of a front waist line; inner right-angle points on the first four-side cloth piece (1) and the second four-side cloth piece (2) form sleeve bottom points of the front garment body respectively; the first four-side cloth piece (1) and the second four-side cloth piece (2) are partially overlapped in a cross mode, so that an acute angle point on the first four-side cloth piece (1) is located above an inner straight angle point of the second four-side cloth piece (2), and an acute angle point on the second four-side cloth piece (2) is located above the inner straight angle point of the first four-side cloth piece (1);

connecting the outer right-angle points of the third four-side cloth piece (3) and the fourth four-side cloth piece (4) together to form a back waist line midpoint, and forming a back clothes body; inner right-angle points on the third four-side cloth piece (3) and the fourth four-side cloth piece (4) form sleeve bottom points of the rear garment body respectively; the third quadrilateral cloth piece (3) and the fourth quadrilateral cloth piece (4) are partially overlapped in a cross mode, so that an acute angle point on the third quadrilateral cloth piece (3) is positioned above an inner straight angle point of the fourth quadrilateral cloth piece (4), and an acute angle point on the fourth quadrilateral cloth piece (4) is positioned above the inner straight angle point of the third quadrilateral cloth piece (3);

secondly, overlapping the front garment piece and the rear garment piece together to form a garment body main body; respectively connecting the two side edges of the front garment piece and the rear garment piece to obtain two side seams of the garment body main body; the top areas of the two side seams are not connected and are used as armholes; tying the positions of the two sharp angle points on the front garment piece and the positions of the two sharp angle points on the rear garment piece respectively to form two shoulder straps;

and the scheme is as follows: collar-hanging sleeveless jacket

Firstly, connecting inner right-angle points on a first four-side cloth piece (1) and a second four-side cloth piece (2) together to form a front neckline midpoint, and connecting adjacent side edges of the first four-side cloth piece (1) and the second four-side cloth piece (2) to form a front garment piece; connecting inner right-angle points on a third four-side cloth piece (3) and a fourth four-side cloth piece (4) together to serve as a middle point of a rear neckline, and connecting adjacent side edges of the third four-side cloth piece (3) and the fourth four-side cloth piece (4) to form a rear garment piece;

secondly, overlapping the front garment piece and the rear garment piece together to form a garment body main body; respectively connecting the two side edges of the front garment piece and the rear garment piece to obtain two side seams of the garment body main body; the positions of the two acute angle points on the front garment piece and the positions of the two acute angle points on the rear garment piece are respectively knotted to form two shoulder straps.

2. The method for producing zero-waste clothes based on square cloth according to claim 1, wherein the method comprises the following steps: in the first scheme, the adjacent side edges of the first four-side cloth piece (1) and the second four-side cloth piece (2) are respectively outer long right-angle sides; the adjacent side edges of the third four-side cloth piece (3) and the fourth four-side cloth piece (4) are respectively outer long right-angle sides.

3. The method for producing zero-waste clothes based on square cloth according to claim 1, wherein the method comprises the following steps: the included angle between the dividing line and the edge of the intersected raw material cloth piece is 30 degrees.

4. The method for producing zero-waste clothes based on square cloth according to claim 1, wherein the method comprises the following steps: the connection mode in the fourth step is sewing.

5. A variable style garment, characterized by: comprises a first four-side cloth piece (1), a second four-side cloth piece (2), a third four-side cloth piece (3) and a fourth four-side cloth piece (4) which are in the same quadrangle; each quadrangle is formed by splicing an outer right-angled triangle and an inner right-angled triangle with overlapped bottom edges; the outer right-angled triangle is a non-isosceles right-angled triangle corresponding to the corner of the raw material cloth piece; the inner right-angled triangle is correspondingly far away from the middle part of the cloth piece and is an isosceles right-angled triangle; two right-angle sides of the outer right-angle triangle are respectively a long outer right-angle side and a short outer right-angle side; two right-angle sides of the inner right-angle triangle are respectively a first inner right-angle side and a second inner right-angle side; four corners of each quadrangle are respectively an inner right angle point, an obtuse angle point, an outer right angle point and an acute angle point; the inner right-angle point, the obtuse-angle point, the outer right-angle point and the acute-angle point of the first four-side cloth piece (1), the second four-side cloth piece (2), the third four-side cloth piece (3) and the fourth four-side cloth piece (4), and the long outer right-angle side, the short outer right-angle side, the first inner right-angle side and the second inner right-angle side are respectively provided with a separable connecting piece;

the one-piece dress has four patterns which can be switched, and the four patterns are as follows:

the method has the following steps: overskirt

The first four-side cloth piece (1), the second four-side cloth piece (2), the third four-side cloth piece (3) and the outer short right-angle side of the fourth four-side cloth piece (4) are sequentially connected to form a rhombic waist opening; the adjacent side edges of a first four-side cloth piece (1) and a second four-side cloth piece (2), the adjacent side edges of the second four-side cloth piece (2) and a third four-side cloth piece (3), the adjacent side edges of the third four-side cloth piece (3) and a fourth four-side cloth piece (4), and the adjacent side edges of the fourth four-side cloth piece (4) and the first four-side cloth piece (1) are respectively connected together through separable connecting pieces;

the second style: v-neck jacket with knotted lower hem

The first four-side cloth piece (1) and the second four-side cloth piece (2) are placed together in a crossed mode to form a front garment piece; the third four-side cloth piece (3) and the fourth four-side cloth piece (4) are placed together in a crossed mode to form a rear garment piece; the two outer short right-angle edges of the front garment piece and the rear garment piece are respectively connected together through a separable connecting piece to form two shoulder sewing lines; two first inner right-angle edges on the front garment piece and the rear garment piece are connected together through a separable connecting piece respectively to form two side seams; armholes are reserved at the tops of the two side stitches; the acute angle points of the first four-side cloth piece (1) and the second four-side cloth piece (2) on the front garment piece are knotted, and the acute angle points of the third four-side cloth piece (3) and the fourth four-side cloth piece (4) on the front garment piece are knotted;

the style three: cross knotting jacket

The first four-side cloth piece (1) is connected with the outer right-angle point on the second four-side cloth piece (2) together to be used as the middle point of the front waistline, so that a front garment body is formed; inner right-angle points on the first four-side cloth piece (1) and the second four-side cloth piece (2) form sleeve bottom points of the front garment body respectively; the first four-side cloth piece (1) and the second four-side cloth piece (2) are partially overlapped in a cross mode, so that an acute angle point on the first four-side cloth piece (1) is located above an inner straight angle point of the second four-side cloth piece (2), and an acute angle point on the second four-side cloth piece (2) is located above the inner straight angle point of the first four-side cloth piece (1);

the third four-side cloth piece (3) is connected with the outer right-angle point on the fourth four-side cloth piece (4) together to be used as the middle point of the back waist line to form a back clothes body; inner right-angle points on the third four-side cloth piece (3) and the fourth four-side cloth piece (4) form sleeve bottom points of the rear garment body respectively; the third quadrilateral cloth piece (3) and the fourth quadrilateral cloth piece (4) are partially overlapped in a cross mode, so that an acute angle point on the third quadrilateral cloth piece (3) is positioned above an inner straight angle point of the fourth quadrilateral cloth piece (4), and an acute angle point on the fourth quadrilateral cloth piece (4) is positioned above the inner straight angle point of the third quadrilateral cloth piece (3);

connecting two first inner right-angle edges of the front garment piece and two first inner right-angle edges of the rear garment piece together through a separable connecting piece respectively to obtain two side seams of the garment body main body; tying two acute angle points on the front garment piece and two acute angle points on the rear garment piece respectively to form two shoulder straps;

the style is four: collar-hanging sleeveless jacket

The inner right-angle points on the first quadrilateral cloth piece (1) and the second quadrilateral cloth piece (2) are connected together through a separable connecting piece to serve as the middle point of a front neckline, and the first inner right-angle edges on the first quadrilateral cloth piece (1) and the second quadrilateral cloth piece (2) are connected together through a separable connecting piece to form a front garment piece; the short outer right-angle sides of the first four-side cloth piece (1) and the second four-side cloth piece (2) are connected to form a front waist line;

the third four-side cloth piece (3) and the fourth four-side cloth piece (4) are connected together through a separable connecting piece to serve as the middle point of the rear neckline, and the third four-side cloth piece (3) and the fourth four-side cloth piece (4) are connected together through a separable connecting piece to form a rear cloth piece; the short outer right-angle sides of the third four-side cloth piece (3) and the fourth four-side cloth piece (4) are connected to form a back waist line;

connecting two long outer right-angle edges of the front garment piece and two long outer right-angle edges of the rear garment piece together through separable connecting pieces respectively to obtain two side seams; armholes are reserved at the tops of the two side stitches; and respectively knotting two acute angle points on the front garment piece and two acute angle points on the rear garment piece to form two shoulder straps.

6. A variable style garment according to claim 1, wherein: the separable connectors on the inner right angle point, the obtuse angle point, the outer right angle point and the acute angle point adopt magic tapes, snap fasteners or buttons.

7. A variable style garment according to claim 1, wherein: the separable connectors on the long outer right-angle side, the short outer right-angle side, the first inner right-angle side and the second inner right-angle side adopt zippers, buttons, snap fasteners or magic tapes.

Technical Field

The invention belongs to the technical field of garment design and production, and particularly relates to a zero-waste garment production method based on square cloth and a variable garment.

Background

The clothing industry is entitled as the second most pollution source in the world, so that the clothing industry can be developed continuously to meet the development requirements of the green and environment-friendly era, and the clothing industry can be used as a designer at the source of the clothing industry and has a vital role in fashion and sustainable transformation. The treatment of leftover materials in the garment production is an important pollution source in the garment production link, and if a garment production method with zero cloth waste can be designed, the pollution of the garment production to the environment can be greatly reduced; in addition, zero-waste garment production can also reduce the cost of garment production and improve enterprise profits.

Meanwhile, the problems of resource consumption, environmental pollution, non-sustainable development mode and the like in the fashion industry are faced. The zero-waste garment design method is researched, so that the design source is favorable for endowing fashion sustainable vitality, pollution is reduced, waste is avoided, and the sustainable development mode of garment enterprises is favorably changed. Finally, a rational and responsible consumption concept can be transferred to consumers, so that a consumption market is developed to drive economic sustainable development.

In addition, with the rapid development of economy and the improvement of the living standard of people, the frequency of purchasing and eliminating clothes is higher, namely the service cycle of clothes is shorter and shorter. The waste clothes are not only a waste, but also cause pollution to the environment. The fundamental reason for this phenomenon is that the style of the existing clothes is single and fixed, so that consumers can quickly feel tired, if one piece of clothes can be worn by multiple methods, the clothes can be matched and designed at will, and the frequency of eliminating the clothes is undoubtedly reduced.

Disclosure of Invention

The invention aims to provide a zero-waste garment production method based on square cloth and a variable garment.

In a first aspect, the invention provides a zero-waste garment production method based on square cloth, which comprises the following specific steps:

step one, taking a square raw material cloth piece.

And step two, two mutually perpendicular partition lines are made through the geometric center point of the raw material cloth piece to form four identical quadrangles. Each quadrangle is formed by splicing an outer right-angled triangle and an inner right-angled triangle with overlapped bottom edges. The outer right-angled triangle is a non-isosceles right-angled triangle; the inner right-angled triangle is an isosceles right-angled triangle. Two right-angle sides of the outer right-angle triangle are respectively a long outer right-angle side and a short outer right-angle side. Two right-angle sides of the inner right-angle triangle are respectively a first inner right-angle side and a second inner right-angle side. Four corners of each quadrangle are respectively an inner right angle point, an obtuse angle point, an outer right angle point and an acute angle point.

And step three, dividing the raw material cloth piece into a first four-side cloth piece, a second four-side cloth piece, a third four-side cloth piece and a fourth four-side cloth piece along two dividing lines.

Step four, producing the clothes by utilizing the first four-side cloth piece, the second four-side cloth piece, the third four-side cloth piece and the fourth four-side cloth piece, and specifically adopting any one of the following four schemes:

the first scheme is as follows: overskirt

The first four-side cloth piece, the second four-side cloth piece, the third four-side cloth piece and the outer short right-angle side of the fourth four-side cloth piece are sequentially connected to form a rhombic waist opening, and the adjacent side edges of the first four-side cloth piece and the second four-side cloth piece, the adjacent side edges of the second four-side cloth piece and the third four-side cloth piece, the adjacent side edges of the third four-side cloth piece and the fourth four-side cloth piece, and the adjacent side edges of the fourth four-side cloth piece and the first four-side cloth piece are respectively connected together through separable connecting pieces.

Scheme II: the lower hem is knotted with a V-collar jacket.

Firstly, the four-side cloth piece I and the four-side cloth piece II are placed together in a crossed mode to obtain a front garment piece. And (4) placing the third four-side cloth piece and the outer long right-angle side of the fourth four-side cloth piece in a crossed manner to obtain a rear garment piece.

Secondly, overlapping the front garment piece and the rear garment piece together to form a garment body main body; respectively connecting the top (short outer right-angle side) of the front garment piece with the top (short outer right-angle side) of the rear garment piece to form two shoulder sewing lines of the garment body main body; and respectively connecting the two side edges of the front garment piece with the two side edges of the rear garment piece to obtain two side seams of the garment body main body. An armhole is reserved at the top of the two side seams. And tying the bottoms of the first four-side cloth piece and the second four-side cloth piece on the front garment piece. And tying the bottoms of the three-side cloth piece and the four-side cloth piece on the rear garment piece.

The third scheme is as follows: cross knotting jacket

Firstly, connecting the outer right-angle points on the first four-side cloth piece and the second four-side cloth piece together to form a front garment body as the middle point of the front waist line. The inner right-angle points on the first four-side cloth piece and the second four-side cloth piece form sleeve bottom points of the front garment body respectively. The first four-side cloth piece and the second four-side cloth piece are partially overlapped in a cross mode, so that an acute angle point on the first four-side cloth piece is located above an inner straight angle point of the second four-side cloth piece, and an acute angle point on the second four-side cloth piece is located above an inner straight angle point of the first four-side cloth piece.

And connecting the outer right-angle points of the third four-side cloth piece and the fourth four-side cloth piece together to form a back waist line midpoint, so as to form a back clothes body. The inner right-angle points on the third four-side cloth piece and the fourth four-side cloth piece form sleeve bottom points of the back clothes body respectively. The third quadrilateral cloth piece and the fourth quadrilateral cloth piece are partially overlapped in a cross mode, so that an acute angle point on the third quadrilateral cloth piece is located above an inner straight angle point of the fourth quadrilateral cloth piece, and an acute angle point on the fourth quadrilateral cloth piece is located above an inner straight angle point of the third quadrilateral cloth piece.

Secondly, overlapping the front garment piece and the rear garment piece together to form a garment body main body; and respectively connecting the two side edges of the front garment piece and the rear garment piece to obtain two side seams of the garment body main body. The positions of the two sharp angle points on the front garment piece and the positions of the two sharp angle points on the rear garment piece are tied respectively to form two shoulder straps.

And the scheme is as follows: collar-hanging sleeveless jacket

Firstly, connecting inner right-angle points on a first four-side cloth piece and a second four-side cloth piece together to form a front neckline midpoint, and connecting adjacent side edges of the first four-side cloth piece and the second four-side cloth piece to form a front garment piece. And connecting the inner right-angle points of the third four-side cloth piece and the fourth four-side cloth piece together to form a rear garment piece, wherein the inner right-angle points are used as the middle points of the rear neckline, and the adjacent side edges of the third four-side cloth piece and the fourth four-side cloth piece are connected to form the rear garment piece.

Secondly, overlapping the front garment piece and the rear garment piece together to form a garment body main body; and respectively connecting the two side edges of the front garment piece and the rear garment piece to obtain two side seams of the garment body main body. The top areas of the two side seams are not connected and are used as armholes. The positions of the two acute angle points on the front garment piece and the positions of the two acute angle points on the rear garment piece are respectively knotted to form two shoulder straps.

Preferably, in the first scheme, the adjacent side edges of the first four-side cloth piece and the second four-side cloth piece are respectively outer long right-angle sides. The adjacent side edges of the third four-side cloth piece and the fourth four-side cloth piece are respectively outer long right-angle sides.

Preferably, the included angle between the dividing line and the edge of the intersected raw material cloth piece is 30 degrees.

Preferably, the connection method in the fourth step is stitching.

In a second aspect, the invention provides a style-variable garment, which comprises a first four-side cloth piece, a second four-side cloth piece, a third four-side cloth piece and a fourth four-side cloth piece which are in the same quadrangle. Each quadrangle is formed by splicing an outer right-angled triangle and an inner right-angled triangle with overlapped bottom edges. The outer right-angled triangle is a non-isosceles right-angled triangle corresponding to the corner of the raw material cloth piece; the inner right-angled triangle is correspondingly far away from the middle part of the cloth piece and is an isosceles right-angled triangle. Two right-angle sides of the outer right-angle triangle are respectively a long outer right-angle side and a short outer right-angle side. Two right-angle sides of the inner right-angle triangle are respectively a first inner right-angle side and a second inner right-angle side. Four corners of each quadrangle are respectively an inner right angle point, an obtuse angle point, an outer right angle point and an acute angle point. The separable connecting pieces are arranged on the long outer right-angle side, the short outer right-angle side, the first inner right-angle side and the second inner right-angle side.

The one-piece dress has four patterns which can be switched, and the four patterns are as follows:

the method has the following steps: overskirt

The first four-side cloth piece, the second four-side cloth piece, the third four-side cloth piece and the outer short right-angle side of the fourth four-side cloth piece are sequentially connected to form a rhombic waist opening. The adjacent side edges of the first four-side cloth piece and the second four-side cloth piece, the adjacent side edges of the second four-side cloth piece and the third four-side cloth piece, the adjacent side edges of the third four-side cloth piece and the fourth four-side cloth piece, and the adjacent side edges of the fourth four-side cloth piece and the first four-side cloth piece are respectively connected together through separable connecting pieces.

The second style: v-neck jacket with knotted lower hem

The first four-side cloth piece and the second four-side cloth piece are arranged together in a crossed mode to form a front garment piece. The third four-side cloth piece and the fourth four-side cloth piece are arranged together in a crossed mode to form a rear garment piece. The two outer short right-angle edges of the front garment piece and the rear garment piece are respectively connected together through a separable connecting piece to form two shoulder seams. Two first inner right-angle sides on the front garment piece and the rear garment piece are connected together through a separable connecting piece respectively to form two side seams. Armholes are reserved at the tops of the two side stitches. The acute angle points of the first four-side cloth piece and the second four-side cloth piece on the front garment piece are knotted, and the acute angle points of the third four-side cloth piece and the fourth four-side cloth piece on the front garment piece are tied.

The style three: cross knotting jacket

The first four-side cloth piece and the second four-side cloth piece are connected together to form a front garment body as the middle point of the front waist line. The inner right-angle points on the first four-side cloth piece and the second four-side cloth piece form sleeve bottom points of the front garment body respectively. The first four-side cloth piece and the second four-side cloth piece are partially overlapped in a cross mode, so that an acute angle point on the first four-side cloth piece is located above an inner straight angle point of the second four-side cloth piece, and an acute angle point on the second four-side cloth piece is located above an inner straight angle point of the first four-side cloth piece.

The third four-side cloth piece and the fourth four-side cloth piece are connected together to be used as the middle point of the back waist line to form a back clothes body. The inner right-angle points on the third four-side cloth piece and the fourth four-side cloth piece form sleeve bottom points of the back clothes body respectively. The third quadrilateral cloth piece and the fourth quadrilateral cloth piece are partially overlapped in a cross mode, so that an acute angle point on the third quadrilateral cloth piece is located above an inner straight angle point of the fourth quadrilateral cloth piece, and an acute angle point on the fourth quadrilateral cloth piece is located above an inner straight angle point of the third quadrilateral cloth piece.

And respectively connecting the two first inner right-angle edges of the front garment piece and the two first inner right-angle edges of the rear garment piece together through a separable connecting piece to obtain two side seams of the garment body main body. Tying the two acute-angle points on the front garment piece and the two acute-angle points on the rear garment piece respectively to form two shoulder straps.

The style is four: collar-hanging sleeveless jacket

The first four-side cloth piece and the second four-side cloth piece are connected together through the separable connecting piece, and are used as the middle point of the front neckline, and the first inner right-angle sides of the first four-side cloth piece and the second four-side cloth piece are connected together through the separable connecting piece to form a front garment piece. The short outer right-angle sides of the first four-side cloth piece and the second four-side cloth piece are connected to form a front waist line.

The inner right-angle points on the third four-side cloth piece and the inner right-angle points on the fourth four-side cloth piece are connected together through a separable connecting piece to serve as the middle point of the rear neckline, and the first inner right-angle edges on the third four-side cloth piece and the first inner right-angle edges on the fourth four-side cloth piece are connected together through the separable connecting piece to form a rear garment piece. The short outer right-angle sides of the third four-side cloth piece and the fourth four-side cloth piece are connected to form a back waist line.

And respectively connecting the two long outer right-angle edges of the front garment piece and the two long outer right-angle edges of the rear garment piece together through separable connecting pieces to obtain two side seams. Armholes are reserved at the tops of the two side stitches. And respectively knotting two acute angle points on the front garment piece and two acute angle points on the rear garment piece to form two shoulder straps.

Preferably, the separable connectors on the inner right angle point, the obtuse angle point, the outer right angle point and the acute angle point adopt magic tapes, snap fasteners or buttons.

Preferably, the separable connectors on the long outer right-angle side, the short outer right-angle side, the first inner right-angle side and the second inner right-angle side adopt zippers, buttons, snap fasteners or magic tapes.

The invention has the beneficial effects that:

1. according to the invention, the square raw material cloth pieces are cut and spliced again, so that the one-piece dress with various different styles can be obtained, and under the condition of using the detachable cloth connecting piece, the one-piece dresses with various styles can be mutually switched in use, so that the clothes wearing fun of a user is increased.

2. The invention meets the design requirement of zero waste, does not generate waste cloth pieces in the production process, not only can effectively reduce the production cost of the clothes, but also can greatly reduce the pollution problem of the clothes production.

Drawings

FIG. 1 is a schematic view of a raw material sheet in example 1 of the present invention;

FIG. 2 is a schematic diagram of a cut raw material fabric sheet according to embodiment 1 of the present invention;

FIG. 3 is a schematic view of a front panel and a rear panel joined together according to example 1 of the present invention;

FIG. 4 is a schematic view of a half-length skirt produced in example 1 of the present invention;

FIG. 5 is a schematic view of a front panel and a rear panel joined together according to example 2 of the present invention;

fig. 6 is a schematic view of a hem-knotted V-neck jacket produced in example 2 of the present invention.

FIG. 7 is a schematic view of a front panel and a rear panel joined together according to example 2 of the present invention;

fig. 8 is a schematic view of the cross-knotted jacket produced in example 2 of the present invention.

FIG. 9 is a schematic view of a front panel and a rear panel joined together according to example 2 of the present invention;

fig. 10 is a schematic view of a vertical collar sleeveless top garment produced in example 2 of the present invention.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

Example 1

A zero-waste garment production method based on square cloth comprises the following specific steps:

step one, taking a piece of raw material cloth. The raw cloth piece is square ABCD.

And step two, as shown in fig. 1, two mutually perpendicular dividing lines FH and EG are formed through the geometric center point of the raw material cloth piece, and the square ABCD is divided into four identical quadrangles AEOF, DHOE, CGOH and BFOG. Each of the four quadrilaterals has a set of diagonal angles of 90 °.

Each quadrangle is formed by splicing an outer right-angled triangle and an inner right-angled triangle with overlapped bottom edges. The outer right-angled triangle is a non-isosceles right-angled triangle corresponding to the corner of the raw material cloth piece; the inner right-angled triangle is correspondingly far away from the middle part of the cloth piece and is an isosceles right-angled triangle. Two right-angle sides of the outer right-angle triangle are respectively a long outer right-angle side and a short outer right-angle side. Two right-angle sides of the inner right-angle triangle are respectively a first inner right-angle side and a second inner right-angle side. Four corners of each quadrangle are respectively an inner right angle point, an obtuse angle point, an outer right angle point and an acute angle point. The outer right-angle point corresponds to a right-angle point on the raw material cloth piece, and the inner right-angle point corresponds to a geometric center on the raw material cloth piece.

And step three, as shown in fig. 2, dividing the raw material cloth piece into a first four-side cloth piece 1, a second four-side cloth piece 2, a third four-side cloth piece 3 and a fourth four-side cloth piece 4 along the dividing lines FH and EG. The first quadrilateral fabric 1 is a quadrilateral AEOF. The second quadrilateral fabric 2 is a quadrilateral DHO 'E'. No. three four-sided fabric piece 3 is quadrilateral CGO 'H'. The fourth four-sided cloth piece 4 is a quadrangle BF ' O ' G '.

Step four, as shown in fig. 3, the first four-side cloth piece 1, the second four-side cloth piece 2, the third four-side cloth piece 3 and the outer short right-angle sides (sides FA, DE ', CH ', BG ') on the fourth four-side cloth piece 4 are sequentially connected into a diamond-shaped gap, and the first four-side cloth piece 1, the second four-side cloth piece 2, the third four-side cloth piece 3 and the fourth four-side cloth piece 4 are fixed together. The diamond shaped notches form the waist opening of the skirt. The adjacent side edges (i.e. the edges AE and the edges DH) of the first four-side cloth piece 1 and the second four-side cloth piece 2 are respectively corresponding outer long right-angle edges. The adjacent side edges (i.e. the edge BF' and the edge CG) of the third four-edge cloth piece 3 and the fourth four-edge cloth piece 4 are respectively corresponding outer long right-angle edges.

Step five, sewing the adjacent side edges (namely the edge AE and the edge DH) of the first four-side cloth piece 1 and the second four-side cloth piece 2 together to form a front skirt piece; the adjacent side edges (i.e., the edge CG 'and the edge BF') of the No. three four-sided fabric sheet 3 and the No. four-sided fabric sheet 4 are sewn together to form the rear skirt sheet.

Step six, sewing the two side edges (the edge OF and the edge O 'E') OF the front skirt piece and the two side edges (the edge O 'G' and the edge O 'H') OF the rear skirt piece together respectively to form the irregular bottom-hem half-skirt, as shown in fig. 4.

In this embodiment, the size of the cloth piece is determined according to 84 women's table, the control part is the length from waist to hip, i.e. the circumference of diamond surrounded by the edges AF, DE', CH ', BG' is greater than or equal to 68 cm of waist, and the length of the shortest part of the skirt (i.e. O 'E') is capable of covering the hip. Because of the crisscross angle can change, when the two parting lines FH and EG and the contained angle far away from the cloth piece take 30 degrees to cut apart, through the experiment, take 1 centimetre to sew up the end, confirm that the length of side of raw materials cloth piece should be greater than or equal to 85 centimetres. Therefore, the side length of the raw material cloth piece is 85 cm.

Example 2

A zero-waste garment production method based on square cloth comprises the following specific steps:

step one, taking a piece of raw material cloth. The raw cloth piece is square ABCD.

And step two, as shown in fig. 1, two mutually perpendicular dividing lines FH and EG are formed through the geometric center point of the raw material cloth piece, and the square ABCD is divided into four identical quadrangles AEOF, DHOE, CGOH and BFOG. Each of the four quadrilaterals has a set of diagonal angles of 90 °.

Each quadrangle is formed by splicing an outer right-angled triangle and an inner right-angled triangle with overlapped bottom edges. The outer right-angled triangle is a non-isosceles right-angled triangle corresponding to the corner of the raw material cloth piece; the inner right-angled triangle is correspondingly far away from the middle part of the cloth piece and is an isosceles right-angled triangle. Two right-angle sides of the outer right-angle triangle are respectively a long outer right-angle side and a short outer right-angle side. Two right-angle sides of the inner right-angle triangle are respectively a first inner right-angle side and a second inner right-angle side. Four corners of each quadrangle are respectively an inner right angle point, an obtuse angle point, an outer right angle point and an acute angle point. The outer right-angle point corresponds to a right-angle point on the raw material cloth piece, and the inner right-angle point corresponds to a geometric center on the raw material cloth piece.

And step three, as shown in fig. 2, dividing the raw material cloth piece into a first four-side cloth piece 1, a second four-side cloth piece 2, a third four-side cloth piece 3 and a fourth four-side cloth piece 4 along the dividing lines FH and EG. The first quadrilateral fabric 1 is a quadrilateral AEOF. The second quadrilateral fabric 2 is a quadrilateral DHO 'E'. No. three four-sided fabric piece 3 is quadrilateral CGO 'H'. The fourth four-sided cloth piece 4 is a quadrangle BF ' O ' G '.

And step four, as shown in fig. 5, the first four-side cloth piece 1 and the second four-side cloth piece 2 are placed together in a crossed mode (the upper end of the crossed part of the edge AE and the edge DH forms a neckline), and a front garment piece with a V-shaped neckline is obtained. And (3) placing the outer long right-angle sides of the third four-side cloth piece 3 and the fourth four-side cloth piece 4 together in a crossed manner (the upper end of the crossed part of the edge CG and the edge BF' forms a neckline), and obtaining the rear garment piece with the V-shaped neckline.

Step five, overlapping the front garment piece and the rear garment piece together to form a garment body main body; sewing two sides (side AF and side DE ') of the top of the front cut piece and two sides (side CH ' and side BG ') of the top of the rear cut piece together respectively to form two shoulder sewing lines of the clothes body main body; the two side edges (the edge OF and the edge O 'E') OF the front garment piece and the two side edges (the edge O 'H' and the edge O 'G') OF the rear garment piece are respectively sewn to obtain two side seams OF the garment body. Gaps are reserved at the positions where the tops of the two side seams of the coat body main body are connected with the two shoulder sewing lines and are used as armholes of the coat body main body. The crossed part of the bottoms (namely the sharp corner points) of the first four-side cloth piece 1 and the second four-side cloth piece 2 on the front garment piece is tied to form a V-shaped front collar with knots. Tying the crossed parts of the three-side cloth piece 3 and the four-side cloth piece 4 on the rear garment piece to form a V-shaped rear collar with knots, and obtaining a hem knotted V-collar upper garment, as shown in fig. 6.

In this embodiment, the size of the raw material cloth piece is determined according to 84 women's tables, the control position is shoulder width and chest circumference, namely, a shoulder line formed by the side AF should be equal to the shoulder width, the circumference of a cylinder formed by enclosing four pieces of four-side cloth pieces should be greater than or equal to the chest circumference, and the cross-shaped angle can be changed, when an included angle between two dividing lines FH and EG and a far-away cloth piece is 30 degrees for dividing, through experiments, a 1 cm sewing head is taken, and the side length of the raw material cloth piece is determined to be greater than or equal to 95 cm. Therefore, the side length of the raw material cloth piece is 95 cm.

Example 3

A zero-waste garment production method based on square cloth comprises the following specific steps:

step one, taking a piece of raw material cloth. The raw cloth piece is square ABCD.

And step two, as shown in fig. 1, two mutually perpendicular dividing lines FH and EG are formed through the geometric center point of the raw material cloth piece, and the square ABCD is divided into four identical quadrangles AEOF, DHOE, CGOH and BFOG. Each of the four quadrilaterals has a set of diagonal angles of 90 °.

Each quadrangle is formed by splicing an outer right-angled triangle and an inner right-angled triangle with overlapped bottom edges. The outer right-angled triangle is a non-isosceles right-angled triangle corresponding to the corner of the raw material cloth piece; the inner right-angled triangle is correspondingly far away from the middle part of the cloth piece and is an isosceles right-angled triangle. Two right-angle sides of the outer right-angle triangle are respectively a long outer right-angle side and a short outer right-angle side. Two right-angle sides of the inner right-angle triangle are respectively a first inner right-angle side and a second inner right-angle side. Four corners of each quadrangle are respectively an inner right angle point, an obtuse angle point, an outer right angle point and an acute angle point. The outer right-angle point corresponds to a right-angle point on the raw material cloth piece, and the inner right-angle point corresponds to a geometric center on the raw material cloth piece.

And step three, as shown in fig. 2, dividing the raw material cloth piece into a first four-side cloth piece 1, a second four-side cloth piece 2, a third four-side cloth piece 3 and a fourth four-side cloth piece 4 along the dividing lines FH and EG. The first quadrilateral fabric 1 is a quadrilateral AEOF. The second quadrilateral fabric 2 is a quadrilateral DHO 'E'. No. three four-sided fabric piece 3 is quadrilateral CGO 'H'. The fourth four-sided cloth piece 4 is a quadrangle BF ' O ' G '.

Step four, as shown in fig. 7, the outer right-angle points (point a and point D) on the first four-side cloth piece 1 and the second four-side cloth piece 2 are sewn together to be used as the middle point of the front waistline, so as to form the front garment body. The inner right-angle points (points O and O') on the first four-side cloth piece 1 and the second four-side cloth piece 2 respectively form sleeve bottom points of the front garment body. The outer short right-angle edges of the first four-side cloth piece 1 and the second four-side cloth piece 2 form a waist line on the front garment body. The first four-side cloth piece 1 and the second four-side cloth piece 2 are partially overlapped in a crossed mode, so that an acute angle point on the first four-side cloth piece 1 is located above an inner straight angle point of the second four-side cloth piece 2, and an acute angle point on the second four-side cloth piece 2 is located above an inner straight angle point of the first four-side cloth piece 1.

And sewing the outer right-angle points (point C and point B) on the third four-side cloth piece 3 and the fourth four-side cloth piece 4 together to be used as the middle point of the back waist line, so as to form the back clothes body. The inner right-angle points (point O and point O') on the third four-side cloth piece 3 and the fourth four-side cloth piece 4 respectively form the sleeve bottom points of the rear garment body. The outer short right-angle edges of the third four-side cloth piece 3 and the fourth four-side cloth piece 4 form a waist line on the back clothes body. The third four-side cloth piece 3 and the fourth four-side cloth piece 4 are partially overlapped in a cross mode, so that an acute angle point on the third four-side cloth piece 3 is located above an inner straight angle point of the fourth four-side cloth piece 4, and an acute angle point on the fourth four-side cloth piece 4 is located above the inner straight angle point of the third four-side cloth piece 3.

Step five, overlapping the front garment piece and the rear garment piece together to form a garment body main body; the two side edges (edge OF, edge O ' E ') OF the front garment piece and the two side edges (edge O ' H ', edge O ') OF the rear garment piece are respectively sewed to obtain two side seams OF the garment body. The positions of the two sharp angle points (point E and point H) on the front garment piece and the positions of the two sharp angle points (point G and point F') on the rear garment piece are tied respectively to be used as two shoulder straps, and the cross-knotted upper garment is obtained, as shown in figure 8.

In this embodiment, the size of the raw material cloth is determined according to 84 women's table, the control positions are shoulder width and chest circumference, that is, the shoulder line formed by the line segment AF should be equal to the shoulder width, the circumference of the cylinder formed by the four pieces of four-side cloth should be greater than or equal to the chest circumference, and the cross shape can be changed, so that the raw material cloth is divided when the included angle between the line segment HE and the vertical line is 30 °. Through experiments, 1 cm of sewing head is taken, and the side length of the raw material cloth piece is determined to be greater than or equal to 95 cm. Therefore, the side length of the raw material cloth piece is 95 cm.

Example 4

A zero-waste garment production method based on square cloth comprises the following specific steps:

step one, taking a piece of raw material cloth. The raw cloth piece is square ABCD.

And step two, as shown in fig. 1, two mutually perpendicular dividing lines FH and EG are formed through the geometric center point of the raw material cloth piece, and the square ABCD is divided into four identical quadrangles AEOF, DHOE, CGOH and BFOG. Each of the four quadrilaterals has a set of diagonal angles of 90 °.

Each quadrangle is formed by splicing an outer right-angled triangle and an inner right-angled triangle with overlapped bottom edges. The outer right-angled triangle is a non-isosceles right-angled triangle corresponding to the corner of the raw material cloth piece; the inner right-angled triangle is correspondingly far away from the middle part of the cloth piece and is an isosceles right-angled triangle. Two right-angle sides of the outer right-angle triangle are respectively a long outer right-angle side and a short outer right-angle side. Two right-angle sides of the inner right-angle triangle are respectively a first inner right-angle side and a second inner right-angle side. Four corners of each quadrangle are respectively an inner right angle point, an obtuse angle point, an outer right angle point and an acute angle point. The outer right-angle point corresponds to a right-angle point on the raw material cloth piece, and the inner right-angle point corresponds to a geometric center on the raw material cloth piece.

And step three, as shown in fig. 2, dividing the raw material cloth piece into a first four-side cloth piece 1, a second four-side cloth piece 2, a third four-side cloth piece 3 and a fourth four-side cloth piece 4 along the dividing lines FH and EG. The first quadrilateral fabric 1 is a quadrilateral AEOF. The second quadrilateral fabric 2 is a quadrilateral DHO 'E'. No. three four-sided fabric piece 3 is quadrilateral CGO 'H'. The fourth four-sided cloth piece 4 is a quadrangle BF ' O ' G '.

Step four, as shown in fig. 3, the inner right-angle points (points O and O') on the first four-sided cloth piece 1 and the second four-sided cloth piece 2 are sewn together to serve as the middle point of the front neckline, and the first inner right-angle sides on the first four-sided cloth piece 1 and the second four-sided cloth piece 2 are sewn together to form a front garment piece. The short outer right-angle sides of the first four-side cloth piece 1 and the second four-side cloth piece 2 are connected to form a front waist line.

And sewing the inner right-angle points on the third four-side cloth piece 3 and the fourth four-side cloth piece 4 together to form a rear neckline midpoint, and sewing the first inner right-angle points on the third four-side cloth piece 3 and the fourth four-side cloth piece 4 together to form a rear garment piece. The short outer right-angle sides of the third four-side cloth piece 3 and the fourth four-side cloth piece 4 are connected to form a front waist line.

Step five, overlapping the front garment piece and the rear garment piece together to form a garment body main body; two side edges (edges AE, DH) of the front garment piece and two side edges (edges CG, BF') of the rear garment piece are respectively sewed to obtain two side seams of the garment body, and the top ends of the two side seams are not sewed to be taken as armholes. The positions of the two acute angle points on the front garment piece and the positions of the two acute angle points on the rear garment piece are respectively tied to form two shoulder straps, and the collar-hanging sleeveless jacket is obtained, as shown in fig. 10.

In this embodiment, the size of the raw material cloth piece is determined according to 84 women's figures, the control part is waist length and back length, that is, the total length of the line segments GB, CH ', DE ', AF connected together is greater than or equal to the waist length, the angles G ' and E, F ' and H can be knotted on the shoulders, and because the angle of the cross shape can be changed, the cloth piece is divided when the included angle between the line segment HE and the vertical line is 30 °. Through experiments, 1 cm of sewing head is taken, and the side length of the raw material cloth piece is determined to be greater than or equal to 85 cm. Therefore, the side length of the raw material cloth piece is 85 cm.

Example 5

The style-variable garment comprises a first quadrilateral cloth piece 1, a second quadrilateral cloth piece 2, a third quadrilateral cloth piece 3 and a fourth quadrilateral cloth piece 4 which are quadrilateral. Each quadrangle is formed by splicing an outer right-angled triangle and an inner right-angled triangle with overlapped bottom edges. The outer right-angled triangle is a non-isosceles right-angled triangle corresponding to the corner of the raw material cloth piece; the inner right-angled triangle is correspondingly far away from the middle part of the cloth piece and is an isosceles right-angled triangle. Two right-angle sides of the outer right-angle triangle are respectively a long outer right-angle side and a short outer right-angle side. Two right-angle sides of the inner right-angle triangle are respectively a first inner right-angle side and a second inner right-angle side. Four corners of each quadrangle are respectively an inner right angle point, an obtuse angle point, an outer right angle point and an acute angle point.

Magic tapes, snap fasteners or buttons are arranged on the inner right-angle points, the obtuse-angle points, the outer right-angle points and the sharp-angle points of the first four-side cloth piece 1, the second four-side cloth piece 2, the third four-side cloth piece 3 and the fourth four-side cloth piece 4, and separable connecting pieces are arranged on the long outer right-angle side, the short outer right-angle side, the first inner right-angle side and the second inner right-angle side. The separable connecting piece adopts a zipper, a button, a snap fastener or a magic tape.

The one-piece dress has four patterns which can be switched, and the four patterns are as follows:

the method has the following steps: overskirt

The outer short right-angle edges of the first four-side cloth piece 1, the second four-side cloth piece 2, the third four-side cloth piece 3 and the fourth four-side cloth piece 4 are connected in sequence to form a rhombic waist opening. The adjacent side edges of the first four-side cloth piece 1 and the second four-side cloth piece 2, the adjacent side edges of the second four-side cloth piece 2 and the third four-side cloth piece 3, the adjacent side edges of the third four-side cloth piece 3 and the fourth four-side cloth piece 4, and the adjacent side edges of the fourth four-side cloth piece 4 and the first four-side cloth piece 1 are respectively connected together through separable connecting pieces.

The second style: v-neck jacket with knotted lower hem

The first four-side cloth piece 1 and the second four-side cloth piece 2 are placed together in a crossed mode at the outer long right-angle side (the side AE and the side DH are crossed to form a neckline) to form a front garment piece. The third four-side cloth piece 3 and the fourth four-side cloth piece 4 are arranged together in a crossed mode to form a rear garment piece.

The two outer short right-angle edges of the front garment piece and the rear garment piece are respectively connected together through a separable connecting piece to form two shoulder seams. Two first inner right-angle sides on the front garment piece and the rear garment piece are connected together through a separable connecting piece respectively to form two side seams. Armholes are reserved at the tops of the two side stitches. The acute angle points of the first four-side cloth piece 1 and the second four-side cloth piece 2 on the front garment piece are knotted, and the acute angle points of the third four-side cloth piece 3 and the fourth four-side cloth piece 4 on the front garment piece are knotted.

The style three: cross knotting jacket

The first four-side cloth piece 1 and the second four-side cloth piece 2 are connected together to form a front garment body as the middle point of the front waist line. The inner right-angle points on the first four-side cloth piece 1 and the second four-side cloth piece 2 form sleeve bottom points of the front garment body respectively. The first four-side cloth piece 1 and the second four-side cloth piece 2 are partially overlapped in a crossed mode, so that an acute angle point on the first four-side cloth piece 1 is located above an inner straight angle point of the second four-side cloth piece 2, and an acute angle point on the second four-side cloth piece 2 is located above an inner straight angle point of the first four-side cloth piece 1.

The third four-side cloth piece 3 is connected with the outer right-angle point on the fourth four-side cloth piece 4 to be used as the middle point of the back waist line to form a back clothes body. The inner right-angle points of the third four-side cloth piece 3 and the fourth four-side cloth piece 4 form sleeve bottom points of the rear garment body respectively. The third four-side cloth piece 3 and the fourth four-side cloth piece 4 are partially overlapped in a cross mode, so that an acute angle point on the third four-side cloth piece 3 is located above an inner straight angle point of the fourth four-side cloth piece 4, and an acute angle point on the fourth four-side cloth piece 4 is located above the inner straight angle point of the third four-side cloth piece 3.

And respectively connecting the two first inner right-angle edges of the front garment piece and the two first inner right-angle edges of the rear garment piece together through a separable connecting piece to obtain two side seams of the garment body main body. Tying the two acute-angle points on the front garment piece and the two acute-angle points on the rear garment piece respectively to form two shoulder straps.

The style is four: collar-hanging sleeveless jacket

The inner right-angle points on the first four-side cloth piece 1 and the second four-side cloth piece 2 are connected together through a separable connecting piece to serve as the middle point of the front neckline, and the first inner right-angle edges on the first four-side cloth piece 1 and the second four-side cloth piece 2 are connected together through a separable connecting piece to form a front garment piece. The short outer right-angle sides of the first four-side cloth piece 1 and the second four-side cloth piece 2 are connected to form a front waist line.

The inner right-angle points on the third four-side cloth piece 3 and the fourth four-side cloth piece 4 are connected together through a separable connecting piece to serve as the middle point of the rear neckline, and the first inner right-angle edges on the third four-side cloth piece 3 and the fourth four-side cloth piece 4 are connected together through a separable connecting piece to form a rear garment piece. The short outer right-angle sides of the third four-side cloth piece 3 and the fourth four-side cloth piece 4 are connected to form a back waist line.

And respectively connecting the two long outer right-angle edges of the front garment piece and the two long outer right-angle edges of the rear garment piece together through separable connecting pieces to obtain two side seams. Armholes are reserved at the tops of the two side stitches. And (3) respectively knotting two acute angle points on the front garment piece and two acute angle points on the rear garment piece to form two shoulder straps, so as to obtain the collar-hanging sleeveless jacket.