阅读说明：本技术 具有浮纹效果的纯双色提花经编间隔织物及其编织方法 (Pure double-color jacquard warp-knitted spacer fabric with embossed effect and knitting method thereof ) 是由 李欣欣 刘燕平 于 2020-03-23 设计创作，主要内容包括：本发明的一种具有浮纹效果的纯双色提花经编间隔织物,由表层1、表层2和间隔层形成,呈三明治形态,表层1和2都包括均匀的非提花区和有浮纹效果的局部纯双色提花花型区；纯双色提花花型区的色纱在两表层顺序交替成圈形成贯穿两表层且与表层花型形状一致的纯双色提花间隔层。本发明的编织方法包括：表层1和2的透明底网由透明经纱编织；表层1和2的局部纯双色提花花型区由两种不同的色纱编织；表层1和2的非提花区内两种色纱均退出成圈,在各独立纯双色提花花型区之间仅保留透明底网的线圈；提花间隔层由色纱在表层1和2的各提花区内交替在两表层垫纱成圈贯穿连接而成。本发明实现了在间隔织物两表层同时实现具有浮纹效果的纯双色提花结构。(The pure double-color jacquard warp-knitted spacer fabric with the embossing effect is formed by a surface layer 1, a surface layer 2 and a spacer layer, is in a sandwich shape, and both the surface layers 1 and 2 comprise a uniform non-jacquard area and a local pure double-color jacquard pattern area with the embossing effect; the colored yarns of the pure double-colored jacquard pattern area are sequentially and alternately looped on the two surface layers to form a pure double-colored jacquard spacing layer which penetrates through the two surface layers and has the same pattern shape with the surface layers. The knitting method of the present invention includes: the transparent bottom nets of the surface layers 1 and 2 are woven by transparent warps; the local pure double-color jacquard pattern areas of the surface layers 1 and 2 are woven by two different colored yarns; two kinds of colored yarns in the non-jacquard areas of the surface layers 1 and 2 are withdrawn for looping, and only the loops of the transparent bottom net are reserved between the independent pure double-colored jacquard pattern areas; the jacquard spacing layer is formed by the fact that dyed yarns are alternately connected in a loop penetrating mode on two surface layer yarn laying areas in the jacquard areas of the surface layers 1 and 2. The invention realizes the pure double-color jacquard structure with the floating pattern effect on the two surface layers of the spacer fabric.)

1. Pure double-colored jacquard weave warp knitting spacer fabric with float grain effect is the three-dimensional spatial structure who is formed by top layer 1, top layer 2 and spacer layer, is sandwich form, characterized by: the surface layer 1 and the surface layer 2 both comprise a uniform non-jacquard area transparent bottom net and a local pure double-color jacquard pattern area which is woven by two kinds of colored yarns and has a raised grain effect; the colored yarns of the local pure double-colored jacquard pattern area are sequentially and alternately looped on the two surface layers to form a pure double-colored jacquard spacing layer which penetrates through the two surface layers and has the same pattern shape with the surface layers;

the local pure double-color jacquard pattern of the surface layer 1 is basically consistent with the local pure double-color jacquard pattern of the surface layer 2; the spatial distribution of the transparent bottom nets of the local pure double-color jacquard pattern area and the non-jacquard area on the surface layers 1 and 2 is basically symmetrical, the colorless yarns between the two surface layers of the non-jacquard area penetrate through the spacing layer and colorless yarn coils on the surface layers of the non-jacquard area are exposed.

2. The pure double jacquard warp-knitted spacer fabric with embossing effect according to claim 1, wherein the local pure double jacquard patterns of the surface layer 1 and the surface layer 2 are substantially identical including color distribution, raw material usage and pattern profile.

3. The pure double-colored jacquard warp-knitted spacer fabric with the embossed effect according to claim 1, wherein the pure double-colored jacquard warp-knitted spacer fabric with the embossed effect is characterized in that two kinds of jacquard colored yarns are looped only in local areas of the surface layer of the fabric to form dispersed and independent different pure-colored jacquard pattern areas, and the rest non-jacquard areas are provided with colorless yarn loops and only expose a transparent bottom screen.

4. The pure double-colored jacquard warp-knitted spacer fabric with the embossing effect as claimed in claim 1, wherein the transparent bottom meshes of the two surface layers of the fabric are plain dense structures or mesh structures, the pure double-colored jacquard pattern area is plain dense structures, the thickness of the spacer layer ranges from 2mm to 8mm, only the jacquard area is provided with through connection yarns, and no yarns are connected between the two transparent bottom meshes of the non-jacquard area in a penetrating way to form two separated independent layers.

5. The pure double-colored jacquard warp-knitted spacer fabric with the embossed effect according to claim 1, wherein yarns for weaving the transparent bottom nets of the surface layer 1 and the surface layer 2 are transparent polyester or nylon monofilaments; the jacquard color yarn for weaving the local pure double-color jacquard pattern area is twisted or untwisted chemical fiber multifilament or staple fiber yarn with certain strength, and has different colors, fineness, materials and textures.

6. The method for weaving a pure bicolor jacquard warp-knitted spacer fabric with an embossed effect as claimed in any one of claims 1 to 5, characterized by comprising the steps of:

(1) the transparent bottom net of the surface layer 1 is knitted by at least one group of fully-penetrated transparent warp yarns as two or more looped lapping yarns, and the loops are uniformly distributed; the transparent bottom net of the surface layer 2 is woven by at least two groups of transparent warps which are fully penetrated, wherein one group is used for knitting and padding yarns with one needle or more than one stitch, the other group is used for knitting and padding yarns with two needles or more than two stitches, and the stitches are uniformly distributed;

(2) the local pure two-color jacquard pattern areas of the surface layer 1 and the surface layer 2 are woven by two different jacquard color yarns, one of the jacquard color yarns is full of odd-numbered wales, the other jacquard color yarn is full of even-numbered wales, the other jacquard color yarn is withdrawn from looping when the one jacquard color yarn participates in looping and weaving the local pure color jacquard pattern on the surface layer, and vice versa, so that a pure two-color jacquard effect is formed;

(3) two kinds of colored yarns in the non-jacquard areas of the surface layer 1 and the surface layer 2 are withdrawn from looping, and only the loops of the transparent bottom net are reserved between the independent pure double-colored jacquard pattern areas;

(4) the jacquard spacing layer is formed by jacquard colored yarns which are alternatively looped and penetrated and connected on two surface layer lapping yarns in each jacquard area of the surface layer 1 and the surface layer 2, the connection area of the spacing layer is consistent with the pattern shape of the surface layer, and no yarn penetrates and is connected between two transparent bottom nets of the non-jacquard area to form two separated independent layers;

the participation in looping refers to that the jacquard color yarns weave single-coil warp flat or double-coil double-warp tissue on the surface layer to expose colors;

the step of withdrawing and looping refers to that the color yarns to be hidden move transversely before needles are canceled on the two surface layers at the same time, the needle back moving and weaving weft insertion tissues with single needle pitch are only carried out on the surface layer 2, and the color is hidden on one side, close to the spacing layer, of the back of each bottom mesh stitch wale of the surface layer 2.

7. The weaving method according to claim 6, characterized in that in step (1), one set of transparent warp yarns of the surface layer 1 is located behind the jacquard dyed yarns in the lapping sequence, and two sets of transparent warp yarns of the surface layer 2 are located in front of and behind the jacquard dyed yarns in the lapping sequence, respectively; in the step (2), the basic yarn laying numbers of the two jacquard yarns are 0-1-0-0/1-0-0-1//.

8. Weaving method according to claim 6, characterized in that the participation in the looping is in particular: comprises that a certain colored yarn is knitted in the same longitudinal row to form a knitting chain stitch 0-1-1-0/1-0-0-1// to form longitudinal pure color continuous, or two adjacent longitudinal rows are knitted to form a double-loop double-warp stitch 0-2-0/2-0-0-2// to form transverse pure color continuous;

the withdrawing looping specifically comprises: the color yarns to be hidden move transversely in front of needles on the two surface layers simultaneously, the needle back of the surface layer 2 is only subjected to single-needle-pitch transverse movement to weave a weft insertion structure 1-1-0-0/1-1-1//, the surface layer 2 is arranged below an extension line of a group of transparent yarns in front of a jacquard color yarn laying sequence, and the color is hidden at one side close to the spacing layer behind each bottom mesh stitch wale of the surface layer 2.

9. The knitting method as claimed in claim 6, characterized in that the single jacquard process is used, knitting being carried out on a double needle bar warp knitting machine having two half-gauge piezoceramic jacquard bars, at least three looping ground bars, the two half-gauge jacquard bars being controlled by two independent shogging systems, respectively.

10. The weaving method according to claim 9, characterized in that the single jacquard patterning process comprises the specific steps of:

(1) at least one looping ground guide bar fully penetrates through the transparent bottom net of the surface layer 1 knitted by the open yarn on the front needle bed, each yarn guide needle of the ground guide bar transversely moves one needle space when swinging to the front of the needle under the control of a transverse moving mechanism, at least two needle spaces are transversely moved when swinging to the back of the needle, and plain dense structures or mesh structures are knitted;

(2) at least two looping ground guide bars fully penetrate through the transparent bottom net of the surface layer 2 knitted by the exposed yarn on the back needle bed, the two ground guide bars are respectively controlled by two traversing mechanisms, looping padding yarn with at least one needle pitch is carried out on the ground guide bar close to the front of the knitting machine, looping padding yarn with at least two needle pitches is carried out on the ground guide bar close to the back of the knitting machine, a plain dense structure or a mesh structure is knitted, and the extension line of the ground guide bar close to the front of the knitting machine on the back needle bed process is positioned above the extension line of the ground guide bar close to the back of the knitting machine;

(3) two half-machine piezoelectric ceramic jacquard guide bars are respectively fully penetrated with a color yarn and are arranged in a staggered mode, jacquard guide bar guide needles close to the back needle bed are positioned in odd-numbered longitudinal rows, jacquard guide bar guide needles close to the front needle bed are positioned in even-numbered longitudinal rows, basic transverse moving data of the two guide bars are 0-1-0-0/1-0-0-1//, namely, padding yarns are woven on the front needle bed and the back needle bed at the same time;

(4) in the local pure double-color jacquard pattern area, one jacquard guide bar is kept on two needle beds to participate in looping at the same time, so that colored yarn coils are exposed on two surface layers of the fabric, and a jacquard spacing layer in through connection is formed between the two surface layers; the other jacquard guide bar is withdrawn from the front needle bed for looping and only carries out needle back shogging on the back needle bed to weave single-needle weft insertion tissues 1-1-0-0/1-1-1-1//, the colored yarns are hidden on the extension line surface of odd or even loops of the back needle bed, and vice versa, and an independent pure two-color jacquard pattern area with two color intervals is formed;

(5) in a non-jacquard area, two jacquard guide bars are withdrawn from the front needle bed and the back needle bed to form loops, only single-needle weft insertion tissues 1-1-0-0/1-1-1-1//' are knitted on the back needle bed, two kinds of colored yarns are simultaneously hidden on the extension line surface of each coil longitudinal row of the back needle bed, and the front surfaces of the front needle bed and the back needle bed are only exposed with transparent bottom mesh coils;

the looping ground guide bar in the step (1) is positioned behind the jacquard guide bar in a front needle bed yarn laying sequence, and a front colored yarn coil is covered on a bottom net transparent coil in the front needle bed process and is exposed outside, so that jacquard weave is clearer;

the two looping ground guide bars in the step (2) are respectively positioned in front of and behind the jacquard guide bar in the back needle bed yarn laying sequence, and a single-needle weft insertion clamp formed by jacquard colored yarns on the reverse side of the back needle bed process is inserted in the middle of the two ground guide extension lines, so that the hiding effect is better;

the participation of the step (4) in the loop forming means that a certain colored yarn is knitted in the same longitudinal row to form a knitting chain stitch 0-1-1-0/1-0-0-1// to form longitudinal pure color continuity, or two adjacent longitudinal rows are knitted in a double-loop double-warp stitch 0-2-0/2-0-0-2// to form transverse pure color continuity.

Technical Field

The invention belongs to the technical field of jacquard weaving, and relates to a pure double-color jacquard warp-knitted spacer fabric with a raised grain effect and a weaving method thereof.

Background

The warp-knitted spacer fabric has good heat dissipation, air permeability and pressure buffering performance due to the three-dimensional knitting structure characteristics, and is one of the preferred materials for producing sports shoe materials, automobile cushions, three-dimensional mattresses and the like. The basic feature of warp-knitted structures is that a number of parallel arranged warp threads are fed simultaneously in the warp direction to parallel arranged working needles, are looped and are looped one after the other. The characteristic enables each working warp yarn to be laid along each transverse row of the working longitudinal row all the time, and the fabric with a longitudinal distribution rule and uniform surface coil distribution is formed.

In the existing warp-knitting interval jacquard technology, for example, a jacquard interval forming vamp is formed by combining jacquard mesh holes and plain weave, and has a double-color effect that yarns with two colors exist in a fabric, and the pure double-color jacquard and floating pattern effects are not involved; although the 3D stereoscopic jacquard warp knitted fabric realizes the three-dimensional jacquard effect, the three-dimensional jacquard warp knitted fabric has no pure double-color jacquard effect and has no symmetrical patterns of an upper surface layer and a lower surface layer; the double-color warp-knitted spacer fabric with the pure-color jacquard effect can only form a pure-color pattern with one color which is the same as that of the bottom gauze on the jacquard surface layer, and has no pure double-color pattern and no non-jacquard area which only exposes the transparent bottom gauze; in addition, although a certain layer of the single-color or multi-color double-layer interval jacquard warp-knitted fabric can realize double-color or multi-color jacquard, a transparent non-jacquard area is not involved, and the jacquard areas of the upper and lower surface layers are asymmetric and have no floating grain effect.

The existing float jacquard technology generally refers to warp knitting float jacquard technology, namely, transition connection warps among patterns are cut by scissors in the knitting process and are mutually independent to have a float effect.

The wale pattern example realized by using the traditional dyed yarn drawing-in is shown in figure 1, but the complex or irregular pattern can not be woven, and the two kinds of dyed yarns can not be alternately woven in the same wale direction, and each dyed yarn is always exposed on the surface layer in a loop mode without having the embossing effect; the pure two-color jacquard pattern realized by the existing double jacquard process is shown in fig. 2, wherein two jacquard color yarns are respectively looped on a front needle bed and a rear needle bed, the two colors are exposed on the surface layer by adjusting the looped needle beds, the colors of the patterns on the two surface layers are complementary and can not be consistent, a non-jacquard area transparent bottom net without jacquard color yarn looping is not arranged between each independent pure color jacquard area, the float pattern effect is not realized, the double jacquard process is complex to operate, and the equipment cost is high.

Disclosure of Invention

The invention aims to provide a pure double-color jacquard warp-knitted spacer fabric with a floating grain effect and a weaving method thereof.

One of the purposes of the invention is to provide a pure double-color jacquard warp-knitted spacer fabric with a raised grain effect, wherein the local pure double-color jacquard patterns of the surface layer 1 are basically consistent with the local pure double-color jacquard patterns of the surface layer 2, namely, the color distribution, the raw material use and the pattern outline of the surface layer 1 and the surface layer 2 are correspondingly consistent, and non-jacquard areas are transparent bottom nets.

The invention also provides a method for weaving the pure double-color jacquard warp-knitted spacer fabric with the pattern floating effect, which utilizes two jacquard color yarns to alternately participate in looping, exposes the color yarns on the surface layer to form a local pure double-color jacquard pattern, and utilizes two groups of color yarns to completely withdraw from the looping and hide in a separation layer and only expose a transparent bottom net, thereby realizing the discontinuous pattern floating effect of a jacquard pattern area and a non-jacquard area.

The invention also provides a weaving method for weaving pure double-color jacquard warp-knitted spacer fabric with floating grain effect by single jacquard process, which comprises the steps of utilizing two half-machine number piezoelectric ceramic jacquard guide bars to be configured in a staggered manner, respectively threading different jacquard color yarns, alternately participating in looping on a front needle bed and a rear needle bed, knitting local pure double-color jacquard patterns by using front padding yarns of needles with one needle pitch or two needle pitches, or withdrawing from the looping and only performing single-needle-pitch needle back transverse movement to form a non-jacquard area transparent bottom net. The problem of weaving a pure double-color jacquard warp-knitted interval structure with different colors in any direction by using a single jacquard technology is solved, the discontinuous embossing effect of a local pure double-color jacquard pattern area and a non-jacquard area is realized, and the weaving method can realize a programmed weaving process due to the fact that the pure double-color jacquard warp-knitted interval fabric with any pattern and the embossing effect can be woven.

In order to achieve the purpose, the invention adopts the following scheme:

the pure double-color jacquard warp-knitted spacer fabric with the floating grain effect is of a three-dimensional structure formed by a surface layer 1, a surface layer 2 and a spacer layer, is in a sandwich shape, and both the surface layer 1 and the surface layer 2 comprise a uniform non-jacquard area transparent bottom net and a local pure double-color jacquard pattern area which is woven by two kinds of colored yarns and has the floating grain effect; the colored yarns of the local pure double-colored jacquard pattern area are sequentially and alternately looped on the two surface layers to form a pure double-colored jacquard spacing layer which penetrates through the two surface layers and has the same pattern shape with the surface layers;

the local pure double-color jacquard patterns of the surface layer 1 and the local pure double-color jacquard patterns of the surface layer 2 are basically consistent, and because the surface layer 1 and the surface layer 2 have different organizational structures, visual subtle parts are slightly different; the spatial distribution of the transparent bottom nets of the local pure double-color jacquard pattern area and the non-jacquard area on the surface layers 1 and 2 is basically symmetrical, the colorless yarns between the two surface layers of the non-jacquard area penetrate through the spacing layer and colorless yarn coils on the surface layers of the non-jacquard area are exposed.

As a preferred technical scheme:

as mentioned above, the pure double-color jacquard warp-knitted spacer fabric with the embossed effect has the advantages that the local pure double-color jacquard patterns of the surface layer 1 and the surface layer 2 are basically consistent, and the local pure double-color jacquard patterns comprise color distribution, raw material use and pattern outlines.

The pure double-color jacquard warp-knitted spacer fabric with the embossed effect is characterized in that the two kinds of jacquard color yarns are looped only in local areas of the surface layer of the fabric to form dispersed and independent different pure-color jacquard pattern areas, and the rest non-jacquard pattern areas are provided with colorless yarn loops and only expose the transparent bottom net.

According to the pure double-color jacquard warp-knitted spacer fabric with the embossed effect, the transparent bottom nets on the two surface layers of the fabric are plain compact structures or mesh structures, the pure double-color jacquard pattern area is a plain compact structure, the thickness range of the spacer layer is changed from 2mm to 8mm, only the jacquard area is provided with the through connection yarns, and no yarn is in through connection between the two transparent bottom nets in the non-jacquard area to form two separated independent layers.

The pure double-color jacquard warp-knitted spacer fabric with the embossed effect is characterized in that the yarns for weaving the transparent bottom nets of the surface layers 1 and 2 are transparent polyester or nylon monofilaments, and the jacquard color yarns for weaving the local pure double-color jacquard pattern areas are twisted or untwisted chemical fiber multifilaments or short fiber yarns with certain strength and have different appearance characteristics including but not limited to color, fineness, material and texture.

The invention also provides a weaving method of the pure double-color jacquard warp-knitted spacer fabric with the embossed effect, which comprises the following steps:

(1) the transparent bottom net of the surface layer 1 is knitted by at least one group of fully-penetrated transparent warp yarns as two or more looped lapping yarns, and the loops are uniformly distributed; the transparent bottom net of the surface layer 2 is woven by at least two groups of transparent warps which are fully penetrated, wherein one group is used for knitting and padding yarns with one needle or more than one stitch, the other group is used for knitting and padding yarns with two needles or more than two stitches, and the stitches are uniformly distributed;

(2) the local pure double-color jacquard pattern areas of the surface layer 1 and the surface layer 2 are woven by two different jacquard color yarns, one of the jacquard color yarns is full of odd-numbered wales, the other jacquard color yarn is full of even-numbered wales, the other jacquard color yarn is withdrawn from looping when the one jacquard color yarn participates in looping and weaving the local pure-color jacquard pattern on the surface layer, and vice versa, so that a pure double-color jacquard effect is formed;

(3) two groups of colored yarns in the non-jacquard areas of the surface layer 1 and the surface layer 2 are withdrawn from looping, and only the loops of the transparent bottom net are reserved between the independent pure double-colored jacquard pattern areas;

(4) the interlayer is formed by weaving, penetrating and connecting jacquard colored yarns in each jacquard area of the surface layer 1 and the surface layer 2 alternately at two surface layer yarn laying loops, the connecting area of the interlayer is consistent with the pattern shape of the surface layer, and no yarns penetrate and connect between two transparent bottom nets of the non-jacquard area to form two separated independent layers;

the participation in looping refers to that the jacquard color yarns weave single-coil warp flat or double-coil double-warp tissue on the surface layer to expose colors;

the step of withdrawing and looping refers to that the color yarns to be hidden move transversely in front of needles on the two surface layers simultaneously, the weft insertion tissues are woven in a single-needle-pitch needle-back transverse moving mode on the surface layer 2 only, and the color is hidden on one side, close to the spacing layer, of the bottom mesh stitch wales on the surface layer 2.

As a preferred technical scheme:

in the weaving method described above, in step (1), one set of transparent warp yarns of the surface layer 1 is located behind the jacquard dyed yarns in the lapping sequence, and two sets of transparent warp yarns of the surface layer 2 are located in front of and behind the jacquard dyed yarns in the lapping sequence.

In the weaving method, in the step (2), the basic lapping numbers of the two jacquard yarns are 0-1-0-0/1-0-0-1//.

In the knitting method, the participating in knitting specifically includes: comprises that a certain colored yarn is knitted in the same longitudinal row to form a knitting chain stitch 0-1-1-0/1-0-0-1// to form longitudinal pure color continuous, or two adjacent longitudinal rows are knitted to form a double-loop double-warp stitch 0-2-0/2-0-0-2// to form transverse pure color continuous;

the withdrawing looping specifically comprises: the color yarns to be hidden traverse before needles are canceled on the two surface layers simultaneously, the single-needle-pitch needle back traverse knitting weft insertion organization 1-1-0-0/1-1-1-1//' is only carried out on the surface layer 2, the color is hidden on one side close to the spacing layer after each bottom mesh stitch wale of the surface layer 2 under the extending line of a group of transparent yarns positioned in front of the jacquard color yarn laying yarn sequence on the surface layer 2.

The invention also provides a weaving method of the pure double-color jacquard warp-knitted spacer fabric with the floating pattern effect by using the single jacquard process, which is to weave on a double-needle bed warp knitting machine with two half-machine number piezoelectric ceramic jacquard guide bars and at least three looping ground guide bars, wherein the two half-machine number jacquard guide bars are respectively controlled by two independent shogging systems.

The single jacquard process comprises the following specific steps:

(1) at least one looping ground guide bar fully penetrates through the transparent bottom net of the surface layer 1 knitted by the open yarn on the front needle bed, and under the control of a traversing mechanism, each yarn guide needle of the ground guide bar traverses one needle space when swinging to the front of the needle, traverses at least two needle spaces when swinging to the back of the needle, and knits plain dense structures or mesh structures;

(2) at least two looping ground guide bars fully penetrate through the transparent bottom net of the surface layer 2 knitted by the exposed yarn on the back needle bed, the two ground guide bars are respectively controlled by two traversing mechanisms, looping padding yarn with at least one needle pitch is carried out on the ground guide bar close to the front of the knitting machine, looping padding yarn with at least two needle pitches is carried out on the ground guide bar close to the back of the knitting machine, a plain dense structure or a mesh structure is knitted, and the extension line of the ground guide bar close to the front of the knitting machine on the back needle bed process is positioned above the extension line of the ground guide bar close to the back of the knitting machine;

(3) two half-machine piezoelectric ceramic jacquard guide bars are respectively fully penetrated with a color yarn and are arranged in a staggered mode, jacquard guide bar yarn guide needles close to the back needle bed are positioned in odd-numbered longitudinal rows, jacquard guide bar yarn guide needles close to the front needle bed are positioned in even-numbered longitudinal rows, basic shogging data of the two guide bars are 0-1-0-0/1-0-0-1//, namely, padding yarns are simultaneously knitted on the front needle bed and the back needle bed;

(4) in the local pure double-color jacquard pattern area, one jacquard guide bar is kept on two needle beds to participate in looping at the same time, so that colored yarn coils are exposed on two surface layers of the fabric, and a jacquard spacing layer which is in through connection is formed between the two surface layers; the other jacquard guide bar is withdrawn from the front needle bed for looping and only carries out needle back shogging on the back needle bed to weave single-needle weft insertion tissues 1-1-0-0/1-1-1-1//, the dyed yarns are hidden at one side, close to the spacing layer, of odd-numbered or even-numbered wales of the back needle bed, and vice versa, so that an independent pure two-color jacquard pattern area with two-color intervals is formed;

(5) in a non-jacquard area, two jacquard guide bars are withdrawn from the front needle bed and the back needle bed to form loops, only single-needle weft insertion tissues 1-1-0-0/1-1-1-1//' are knitted on the back needle bed, two kinds of colored yarns are simultaneously hidden on an extension line surface of each coil longitudinal row of the back needle bed layer close to one side of the spacing layer, and the front surfaces of the front needle bed process and the back needle bed process only expose transparent bottom mesh coils;

the looping ground guide bar in the step (1) is positioned behind the jacquard guide bar in a front needle bed yarn laying sequence, and a front colored yarn coil is covered on a bottom net transparent coil in the front needle bed process and is exposed outside, so that jacquard weave is clearer;

the two looping ground guide bars in the step (2) are respectively positioned in front of and behind the jacquard guide bar in the back needle bed yarn laying sequence, and a single-needle lining weft formed by jacquard colored yarns on the back needle bed process is lined in the middle of the two ground guide extension lines, so that the hiding effect is better;

the participation of the step (4) in the loop forming means that a certain colored yarn is knitted in the same longitudinal row to form a knitting chain stitch 0-1-1-0/1-0-0-1// to form longitudinal pure color continuity, or two adjacent longitudinal rows are knitted in a double-loop double-warp stitch 0-2-0/2-0-0-2// to form transverse pure color continuity.

Advantageous effects

(1) The invention realizes that only two groups of warp-through jacquard color yarns alternately participate in or quit looping, and a pure double-color jacquard structure with a raised grain effect is simultaneously realized on two surface layers of a spacer fabric, which specifically comprises the following steps: jacquard yarns alternately participate in looping in a pure double-color jacquard pattern area, the B-colored yarns in the A-colored yarn jacquard pattern area cancel the front traversing of a surface layer 1 and weave a weft insertion structure on a surface layer 2, the B-colored yarns are hidden in a partition layer, and the A-colored yarns weave a heavy warp structure on the surface layer 1 to supplement the B-colored yarns to work wales, so that the pure color continuous weaving of the A-colored yarns in the jacquard pattern area is realized; similarly, the A color yarns in the jacquard area of the B color yarns are hidden in the spacing layer in a weft insertion weave mode without traversing before needles, and the B color yarns weave the heavy warp weave in the surface layer 1 to supplement the working wales of the A color yarns, so that the pure color continuous weaving of the B color yarns in the jacquard area is realized; the A, B colored yarns in the non-jacquard area are withdrawn from the surface layer for looping, are hidden on the technical back surface of the surface layer 2 in a weft insertion mode, and the transparent yarn loops of the bottom net are exposed only on the technical front surfaces of the two surface layers;

(2) the invention can realize the weaving of pure double-color jacquard warp-knitted spacer fabric with any pattern type and floating grain effect, and can realize a programmed weaving process.

Drawings

FIG. 1 is an example of a wale pattern achieved using conventional colored yarn drawing-in;

FIG. 2 is an example of a pure two-color jacquard pattern realized by the existing double jacquard process;

FIG. 3 is an example of a pure two-color jacquard pattern with a raised grain effect achieved by the present invention;

FIG. 4 is a view of a single Jacquard jacquard process jacquard yarn loop of the example of FIG. 3 of the present invention;

FIG. 5 is a diagram of the motion of a jacquard yarn laying in the single Jacquard jacquard process of the present invention in the example of FIG. 3;

FIG. 6 is a schematic view of a pure two-color jacquard warp-knitted spacer fabric with a float effect according to the present invention;

wherein "×" represents a yarn stitch of color A, "Δ" represents a yarn stitch of color B, and the blank cell represents a transparent base screen stitch.

Detailed Description

The invention will be further illustrated with reference to specific embodiments. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes and modifications can be made by those skilled in the art after reading the teachings of the present invention, and such equivalents also fall within the scope of the appended claims.

In a specific embodiment, the pure two-color jacquard pattern area comprises a single color yarn loop, a uniform color yarn course, a uniform color yarn wale and a continuous uniform color yarn area.

In a specific embodiment, the two sets of colored yarns include, but are not limited to, different colors, and also visually different characteristics such as fineness, texture, and texture.

The pure double-color jacquard warp-knitted spacer fabric with the floating grain effect is shown in figure 6, a three-dimensional structure formed by a surface layer 1, a surface layer 2 and a spacer layer is in a sandwich shape, and the surface layer 1 and the surface layer 2 both comprise a uniform non-jacquard area transparent bottom net and a local pure double-color jacquard pattern area which is woven by two kinds of colored yarns and has the floating grain effect; the colored yarns of the local pure double-colored jacquard pattern area are sequentially and alternately looped on the two surface layers to form a pure double-colored jacquard spacing layer which penetrates through the two surface layers and has the same pattern shape with the surface layers;

the local pure double-color jacquard patterns of the surface layer 1 and the local pure double-color jacquard patterns of the surface layer 2 are basically consistent, and because the surface layer 1 and the surface layer 2 have different organizational structures, slight differences can be seen; the spatial distribution of the transparent bottom nets of the local pure double-color jacquard pattern area and the non-jacquard area on the surface layers 1 and 2 is basically symmetrical, the colorless yarns between the two surface layers of the non-jacquard area penetrate through the connected spacing layer, and the colorless yarn coils on the surface layers of the non-jacquard area are exposed.

The local pure double-color jacquard patterns of the surface layer 1 and the surface layer 2 are basically consistent, and comprise color distribution, raw material use and pattern outlines.

The pure double-color jacquard warp-knitted spacer fabric with the floating grain effect means that two kinds of jacquard color yarns are looped only in local areas of the surface layer of the fabric to form dispersed and independent different pure-color jacquard pattern areas, and the rest non-jacquard areas are colorless yarn loops and only expose transparent bottom nets.

The transparent bottom nets on the two surface layers of the fabric are plain compact structures or mesh structures, the pure double-color jacquard pattern area is plain compact structures, the thickness range of the spacing layer is from 2mm to 8mm (more than several mm to more than one hundred mm), the spacing layer only has through connection yarns in the jacquard pattern area, and no yarn through connection between the two transparent bottom nets in the non-jacquard pattern area is separated two independent layers.

The yarns for weaving the transparent bottom nets of the surface layer 1 and the surface layer 2 are transparent polyester or nylon monofilaments, the jacquard colored yarns for weaving the local pure double-colored jacquard pattern areas are twisted or untwisted chemical fiber multifilaments or staple fiber yarns with certain strength, and have different appearance characteristics including but not limited to color, fineness, material and texture.

The invention also provides a weaving method of the pure double-color jacquard warp-knitted spacer fabric with the embossed effect, which comprises the following steps:

(1) the transparent bottom net of the surface layer 1 is knitted by at least one group of fully-penetrated transparent warp yarns as two or more looped lapping yarns, and the loops are uniformly distributed; the transparent bottom net of the surface layer 2 is woven by at least two groups of transparent warps which are fully penetrated, wherein one group is used for knitting and padding yarns with one needle or more than one stitch, the other group is used for knitting and padding yarns with two needles or more than two stitches, and the stitches are uniformly distributed; wherein, a group of transparent warp yarns of the surface layer 1 are positioned behind jacquard yarns on the lapping sequence, and two groups of transparent warp yarns of the surface layer 2 are respectively positioned in front of and behind the jacquard yarns on the lapping sequence.

(2) The local pure double-color jacquard pattern areas of the surface layer 1 and the surface layer 2 are woven by two different jacquard color yarns, one jacquard color yarn penetrates through odd-numbered wales, the other jacquard color yarn penetrates through even-numbered wales, and one color yarn participates in looping on the surface layer (the participation in looping refers to the fact that the jacquard color yarn weaves single-loop warp flat or double-loop double-warp tissues on the surface layer to expose colors, specifically, the jacquard color yarn comprises one color yarn weaves a chain stitch 0-1-1-0/1-0-0-1// forms longitudinal pure-color continuity in the same wale, or weaves double-loop double-warp tissues 0-2-2-0/2-0-0-2// forms transverse pure-color continuity in two adjacent wales); the exiting and looping is that the dyed yarns transversely move before the needles are cancelled on the two surface layers at the same time, a single-wale weft insertion structure is only woven on the surface layer 2, the color is hidden on one side close to the spacing layer after each wale of the surface layer 2, and the method specifically comprises the following steps: the color yarns to be hidden cancel the front padding yarns of the needles of the surface layer 1, the single-needle-pitch needle-back traversing weaving weft insertion weave 1-1-0-0/1-1-1-1//' is only carried out on the surface layer 2, and the color yarns are padded under the extending lines of a group of transparent yarns positioned in front of the jacquard yarn padding yarn sequence and hidden at one side of each bottom net stitch wale close to the spacing layer of the surface layer 2; wherein, the basic lapping yarn numbers of the two jacquard dyed yarns are 0-1-0-0/1-0-0-1//.

(3) Two kinds of colored yarns in the non-jacquard areas of the surface layer 1 and the surface layer 2 are withdrawn from looping, and only the loops of the transparent bottom net are reserved between the independent pure double-colored jacquard pattern areas;

(4) the jacquard spacing layer is formed by jacquard colored yarns which are alternatively looped and penetrated and connected on two surface layer lapping yarns in each jacquard area of the surface layer 1 and the surface layer 2, the connection area of the spacing layer is consistent with the pattern shape of the surface layer, and no yarn penetrates and is connected between two transparent bottom nets of the non-jacquard area to form two separated independent layers;

the invention also provides a weaving method of the pure double-color jacquard warp-knitted spacer fabric with the floating pattern effect by using the single jacquard process, which is to weave on a double-needle bed warp knitting machine with two half-machine number piezoelectric ceramic jacquard guide bars and at least three looping ground guide bars, wherein the two half-machine number jacquard guide bars are respectively controlled by two independent shogging systems.

The single jacquard process comprises the following specific steps:

(1) at least one looping ground guide bar fully penetrates through the transparent bottom net of the surface layer 1 knitted by the open yarn on the front needle bed, and under the control of a traversing mechanism, each yarn guide needle of the ground guide bar traverses one needle space when swinging to the front of the needle, traverses at least two needle spaces when swinging to the back of the needle, and knits plain dense structures or mesh structures; the looping ground guide bar is positioned behind the jacquard guide bar on the front needle bed yarn laying sequence, and the front colored yarn coil is covered on the bottom net transparent coil and exposed outside in the front needle bed process, so that the jacquard is clearer;

(2) at least two looping ground guide bars fully penetrate through the transparent bottom net of the surface layer 2 knitted by the exposed yarn on the back needle bed, the two ground guide bars are respectively controlled by two traversing mechanisms, looping padding yarn with at least one needle pitch is carried out on the ground guide bar close to the front of the knitting machine, looping padding yarn with at least two needle pitches is carried out on the ground guide bar close to the back of the knitting machine, a plain dense structure or a mesh structure is knitted, and the extension line of the ground guide bar close to the front of the knitting machine on the back needle bed process is positioned above the extension line of the ground guide bar close to the back of the knitting machine; the two looping ground guide bars are respectively positioned in front of and behind the jacquard guide bar in the back needle bed yarn laying sequence, and single-needle lining weft insertion clips formed by jacquard colored yarns on the back needle bed process are lined in the middle of the two ground bar extension lines, so that the hiding effect is better;

(3) two half-machine piezoelectric ceramic jacquard guide bars are respectively fully penetrated with a color yarn and are arranged in a staggered mode, jacquard guide bar yarn guide needles close to the back needle bed are positioned in odd-numbered longitudinal rows, jacquard guide bar yarn guide needles close to the front needle bed are positioned in even-numbered longitudinal rows, basic shogging data of the two guide bars are 0-1-0-0/1-0-0-1//, namely, padding yarns are simultaneously knitted on the front needle bed and the back needle bed;

(4) in the local pure double-color jacquard pattern area, one jacquard guide bar is kept on two needle beds to participate in looping at the same time, so that colored yarn coils are exposed on two surface layers of the fabric, and a jacquard spacing layer which is in through connection is formed between the two surface layers; the other jacquard guide bar is withdrawn from the front needle bed for looping and only carries out needle back shogging on the back needle bed to knit a single-needle weft insertion organization 1-1-0-0/1-1-1-1//, the colored yarn is hidden on the extension line surface of odd or even number coils of the back needle bed, and vice versa, so that an independent pure two-color jacquard pattern area with two color intervals is formed; wherein, the participation in the loop formation means that a certain colored yarn forms the longitudinal pure color continuity in the same longitudinal row weaving chaining structure 0-1-1-0/1-0-0-1// or forms the transverse pure color continuity in the adjacent two longitudinal rows weaving double-loop double-warp structure 0-2-2-0/2-0-0-2// respectively.

(5) In a non-jacquard area, the two jacquard guide bars are withdrawn for forming loops on the front needle bed and the rear needle bed, only single-needle weft insertion tissues 1-1-0-0/1-1-1//' are knitted on the rear needle bed, two kinds of colored yarns are hidden on the extension line surface of each wale of the rear needle bed layer at the same time, and only transparent bottom mesh coils are exposed on the technical front surfaces of the front needle bed and the rear needle bed.