阅读说明：本技术 局部立体经编网布及其制造方法 (Local three-dimensional warp-knitted mesh fabric and manufacturing method thereof ) 是由 谢京伦 张增强 陈玉丰 郑国烟 于 2020-05-08 设计创作，主要内容包括：本发明公开了局部立体经编网布及其制造方法,其特征在于,包括：网布本体,所述网布本体至少由第一纱线与第二纱线在经编机上一体编织,所述第一纱线和/或所述第二纱线为热熔纱,所述热熔纱为鞘蕊型结构的复合纱线,所述鞘部聚合物的熔点Tm1高于所述蕊部聚合物的熔点Tm2,所述网布本体包括热熔区域,所述热熔区域经热定型处理后凸出于所述网布本体的表层形成立体造型。所述制造方法包括编织步骤与热定型处理步骤以及冷却处理步骤。本发明的局部立体经编网布的立体造型的立体感更明显、更持久稳定,且具有较佳的尺寸安定性。(The invention discloses a local three-dimensional warp-knitted mesh fabric and a manufacturing method thereof, which are characterized by comprising the following steps: the mesh fabric body is integrally woven on a warp knitting machine through at least first yarns and second yarns, the first yarns and/or the second yarns are hot-melt yarns, the hot-melt yarns are composite yarns of a sheath core type structure, the melting point Tm1 of a sheath portion polymer is higher than the melting point Tm2 of a core portion polymer, the mesh fabric body comprises a hot-melt area, and the hot-melt area protrudes out of the surface layer of the mesh fabric body after being subjected to heat setting processing to form a three-dimensional shape. The manufacturing method comprises a weaving step, a heat setting treatment step and a cooling treatment step. The three-dimensional modeling of the local three-dimensional warp-knitted mesh cloth is more obvious in three-dimensional sense, more durable and stable, and has better size stability.)

1. Local three-dimensional warp knitting screen cloth, its characterized in that includes: the mesh fabric body is integrally woven on a warp knitting machine through at least first yarns and second yarns, the first yarns and/or the second yarns are hot-melt yarns, the hot-melt yarns are composite yarns of a sheath core type structure, the melting point Tm1 of a sheath portion polymer is higher than the melting point Tm2 of a core portion polymer, the mesh fabric body comprises a hot-melt area, and the hot-melt area protrudes out of the surface layer of the mesh fabric body after being subjected to heat setting processing to form a three-dimensional shape.

2. The partially three-dimensional warp-knitted mesh fabric according to claim 1, wherein the sheath polymer and the core polymer are both polyester polymers.

3. The partially three-dimensional warp knitted mesh fabric according to claim 1, wherein the first yarn is a heat-fusible yarn and the second yarn is a conventional fiber yarn.

4. The partial three-dimensional warp-knitted mesh fabric according to claim 3, wherein the conventional fiber yarn is polyester or nylon or a composite yarn of polyester and nylon.

5. The partially three-dimensional warp knitted mesh fabric according to claim 2, wherein the heat-fusible yarn is fully oriented polyester fiber yarn FOY.

6. The partially three-dimensional warp knitted mesh fabric according to claim 1, wherein the melting point Tm1 of the sheath polymer and the melting point Tm2 of the core polymer satisfy the following relationship: tm2+10 < Tm1 < Tm2+ 30.

7. The local three-dimensional warp-knitted mesh cloth according to claim 1, wherein the height H of the three-dimensional shape protruding from the surface layer of the mesh cloth body has a value range of: h is more than 0 and less than or equal to 3 mm.

8. The method for manufacturing the partially three-dimensional warp-knitted fabric according to any one of claims 1 to 7, comprising the following steps:

s1, weaving, namely, threading on a warp knitting machine according to the tissue requirement, and integrally weaving the mesh cloth body;

s2, heat setting processing, counterpoint installation heated press mould on no sewing hot pressing rigging machine, be equipped with three-dimensional modeling on the heated press mould, will S1 step is woven the screen cloth body is put into the heated press mould, starts no sewing hot pressing rigging machine and preheats to preset temperature T1, after reaching preset temperature T1, starts no sewing hot pressing rigging machine and carries out hot pressing design under hot pressing temperature T2, wherein, preset temperature T1 with hot pressing temperature T2 satisfies following relational expression: tm1 is not less than T1 and not more than Tm2, Tm1 is not less than T2 and not more than Tm 2.

And S3, cooling, namely cooling the mesh body subjected to the heat setting in the step S2 to obtain a finished product.

9. The method of claim 8, wherein after step S1, the web body is laser cut to a predetermined shape by a laser machine, and after the laser cut, the web body with the predetermined shape is heat set in step S2.

10. The method for manufacturing a partially three-dimensional warp knitted mesh fabric according to claim 8, wherein in the step S2, the heat pressing mold is divided into an upper mold and a lower mold, the upper mold is provided with a convex three-dimensional figure, the lower mold is provided with a concave three-dimensional figure matching and aligning the upper mold, and the temperatures of the upper mold and the lower mold are both the heat pressing temperature T2.

Technical Field

The invention relates to the field of post-processing of warp knitted fabrics, in particular to a local three-dimensional warp knitted mesh fabric and a manufacturing method thereof.

Background

At present, along with the improvement of living standard, the market is more and more diversified to textile fabric's demand, not only will satisfy certain feel and comfort level, also will satisfy the different three-dimensional molding demand of textile fabric to pursue fashion pleasing to the eye. The existing textile fabric with three-dimensional shape in the market is generally realized in a weaving process or a finishing and processing process.

The textile fabric with the three-dimensional shape formed by the knitting process has high requirements on the knitting process, and needs to be realized by utilizing various transformations among tissues, and the formed three-dimensional shape is mostly and uniformly distributed on the textile fabric, so that the local three-dimensional shape is difficult to form; form three-dimensional molding through aftertreatment processing technology and adopt heat setting processing technology more, it adds the integrative weaving of hot melt yarn in textile fabric usually, the hot melt yarn is sheath stamen type structure, utilize the characteristics that sheath portion melting point is less than stamen portion melting point, when hot pressing temperature reached sheath portion fibre melting point, sheath portion fibre can be totally melted into viscous state and make between the adjacent yarn adhere to each other integratively, in order to form three-dimensional molding, but this three-dimensional molding is permanent memory pattern, be unfavorable for carrying out many times moulding processing to this textile fabric under lasting high temperature, in order to satisfy diversified technological requirement. In addition, due to the yarn tissue structure factor of the warp-knitted mesh fabric, the surface physical properties of the warp-knitted mesh fabric are unstable, so that the existing heat setting treatment process is difficult to carry out heat setting treatment on the warp-knitted mesh fabric, and the warp-knitted mesh fabric is difficult to form a local three-dimensional shape through the heat setting treatment.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides the local three-dimensional warp-knitted mesh cloth and the manufacturing method thereof, which can meet the requirements of different three-dimensional shapes on the warp-knitted mesh cloth.

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

local three-dimensional warp knitting net cloth includes: the mesh fabric body is integrally woven on a warp knitting machine through at least first yarns and second yarns, the first yarns and/or the second yarns are hot-melt yarns, the hot-melt yarns are composite yarns of a sheath core type structure, the melting point Tm1 of a sheath portion polymer is higher than the melting point Tm2 of a core portion polymer, the mesh fabric body comprises a hot-melt area, and the hot-melt area protrudes out of the surface layer of the mesh fabric body after being subjected to heat setting processing to form a three-dimensional shape.

The local three-dimensional warp-knitted mesh fabric provided by the embodiment of the invention at least has the following technical effects: the heat-fusible yarn is integrally woven in the mesh body, a certain-form three-dimensional shape is formed in the local part of the mesh body by utilizing a heat setting treatment process, different heat-pressing dies can be matched to perform hot pressing of various three-dimensional shapes on the mesh body, the diversified requirements of the market are met, the melting point of a sheath polymer of the adopted heat-fusible yarn is higher than that of a core polymer, when the hot pressing temperature reaches the melting point of the core polymer, the core polymer is melted into a viscous flow state, part of the core polymer in the viscous flow state overflows to a sheath part, the heat-fusible yarn is bonded with adjacent yarns, the physical property of the mesh body can be effectively improved, and the outer sheath polymer is not melted, so that the heat-fusible yarn has a shape memory effect in heat setting, multiple times of shaping processing are facilitated, the three-dimensional sense of the three-dimensional shape after heat setting treatment is more obvious and more durable and stable, and has better dimensional stability, and aiming at the situation that when the hot melt yarn with the melting point of the sheath polymer lower than that of the core polymer in the prior art is subjected to hot-press forming, the sheath can be completely melted into a viscous state to form a permanent memory state.

According to some embodiments of the present invention, the sheath polymer and the core polymer are both polyester polymers, which have good wear resistance, and are used to improve the wear resistance of the warp knitted mesh fabric.

According to some embodiments of the invention, the first yarn is a hot melt yarn and the second yarn is a conventional fiber yarn.

According to some embodiments of the invention, the regular fiber yarn is polyester or nylon or a composite yarn of polyester and nylon.

According to some embodiments of the invention, the hot melt yarn is fully oriented polyester fiber yarn FOY, which has low elongation, low shrinkage and is dimensionally stable.

According to some embodiments of the invention, the melting point Tm1 of the sheath polymer and the melting point Tm2 of the core polymer satisfy the following relationship: tm2+10 < Tm1 < Tm2+30, which limits the temperature difference between the melting point of the sheath polymer and the melting point of the core polymer, so that the sheath polymer is near the softening point when the hot-pressing temperature is equal to or slightly higher than the melting point of the core polymer for hot-forming.

According to some embodiments of the invention, the value range of the height H of the three-dimensional modeling protruding out of the surface layer of the mesh body is as follows: h is more than 0 and less than or equal to 3 mm.

The manufacturing method of the local three-dimensional warp-knitted mesh cloth comprises the following steps:

s1, weaving, namely, threading on a warp knitting machine according to the tissue requirement, and integrally weaving the mesh cloth body;

s2, heat setting processing, counterpoint installation heated press mould on no sewing hot pressing rigging machine, be equipped with three-dimensional modeling on the heated press mould, will S1 step is woven the screen cloth body is put into the heated press mould, starts no sewing hot pressing rigging machine and preheats to preset temperature T1, after reaching preset temperature T1, starts no sewing hot pressing rigging machine and carries out hot pressing design under hot pressing temperature T2, wherein, preset temperature T1 with hot pressing temperature T2 satisfies following relational expression: tm1 is not less than T1 and not more than Tm2, Tm1 is not less than T2 and not more than Tm 2.

And S3, cooling, namely cooling the mesh body subjected to the heat setting in the step S2 to obtain a finished product.

The manufacturing method of the local three-dimensional warp-knitted mesh cloth provided by the embodiment of the invention at least has the following beneficial effects: can cooperate and change the heated press mold who has different three-dimensional molding to carry out heat setting processing to the warp knitting net cloth to form various specific three-dimensional molding in the part of warp knitting net cloth, satisfy the diversified demand in market, the local three-dimensional warp knitting net cloth size of formation is stable, is difficult for flexible deformation.

According to some embodiments of the present invention, after the step S1 is completed, the web body is laser cut to a certain shape by a laser machine, and after the laser cutting is completed, the heat setting process of the step S2 is performed on the web body with a certain shape.

According to some embodiments of the present invention, in the step S2, the hot pressing mold is divided into an upper mold and a lower mold, the upper mold is provided with a convex three-dimensional shape, the lower mold is provided with a concave three-dimensional shape matched to align the upper mold, and the temperatures of the upper mold and the lower mold are both the hot pressing temperature T2.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic representation of a partially three-dimensional warp knitted mesh fabric according to an embodiment of the present invention;

FIG. 2 is a yarn pattern effect diagram of the mesh body of the first embodiment before heat setting;

FIG. 3 is a yarn texture effect graph of the mesh body of the first embodiment after heat setting.

Detailed Description

In order to further explain the technical scheme of the invention, the invention is explained in detail by combining specific embodiments.

Referring now to FIGS. 1-3, the following examples of the invention are made by way of example of the three dimensional "PAIHO" logo sculpting made on shoe type warp knitted fabrics:

as shown in fig. 1, the partial three-dimensional warp knitted mesh fabric according to the embodiment of the invention includes a mesh fabric body, the mesh fabric body is integrally knitted on a warp knitting machine by at least a first yarn and a second yarn, the first yarn and/or the second yarn are/is a hot melt yarn, that is, only the hot melt yarn needs to be added into the mesh fabric body for integral knitting, the mesh fabric body includes a hot melt area, the hot melt area protrudes out of the surface layer of the mesh fabric body after being subjected to heat setting treatment to form a three-dimensional pattern, and the mesh fabric body can be subjected to hot press setting of various partial three-dimensional shapes by matching with different hot press molds, so as to meet diversified demands of the market. The hot-melt yarn in this embodiment is a composite yarn of a sheath-core type structure, specifically, the polymer types of the sheath portion and the core portion of the hot-melt yarn may be the same or different, the polymer types may be determined according to the physical properties of the required mesh fabric body, the melting point Tm1 of the sheath portion polymer of the hot-melt yarn is higher than the melting point Tm2 of the core portion polymer, when the hot-pressing temperature reaches the melting point of the core portion polymer, the core portion polymer is melted into a viscous state, and a part of the core portion polymer in the viscous state overflows to the sheath portion, so that the hot-melt yarn is bonded with the adjacent yarn, the physical properties of the mesh fabric body can be effectively improved, and the outer sheath portion polymer is not melted, so that the hot-melt yarn has a shape memory effect in the hot-shaping process, which is convenient for multiple times of shaping process, the three-dimensional shape after the hot-shaping process is. The hot-melt yarn used in the embodiment is different from the hot-melt yarn used in the heat setting treatment in the prior art, the melting point of the polymer of the sheath part of the hot-melt yarn used in the prior art is lower than the melting point of the polymer of the core part, so that when the hot-melt yarn is set at a certain hot-pressing temperature, the sheath part is ensured to be completely melted into the viscous state, the viscous state is bonded with the adjacent yarns into a whole, the completely melted sheath part can form a permanent memory state, and the secondary shaping processing treatment cannot be carried out.

In addition, the heat setting treatment process of the textile is to eliminate the stress and strain accumulated in the textile through high-temperature treatment, so that the textile can obtain a certain required form in state, size or structure and achieve certain stability, and the technical bias of the technical skill in the art is that the heat setting can be realized only by completely melting the outer sheath polymer and mutually bonding the outer sheath polymer with the adjacent yarns.

In order to ensure the wear-resistant property of the mesh fabric body, the sheath polymer and the core polymer can be polyester polymers, and the composite yarn of the sheath core type structure formed by the sheath polymer and the core polymer can be fully-oriented polyester fiber FOY with small extension, low shrinkage and stable size.

It is understood that one of the first yarn and the second yarn may be a heat-fusible yarn and the other of the first yarn and the second yarn may be a conventional fiber yarn, i.e., the first yarn may be a heat-fusible yarn and the second yarn may be a conventional fiber yarn. Wherein, the conventional fiber yarn can be terylene or chinlon or composite yarn of terylene and chinlon.

Further, the melting point Tm1 of the sheath polymer and the melting point Tm2 of the core polymer satisfy the following relationship: tm2+10 < Tm1 < Tm2+30, wherein the values in the formula are all temperatures and are given in degrees Celsius (C.). By limiting the temperature difference range between the melting point of the sheath polymer and the melting point of the core polymer, when the hot-pressing temperature is equal to or slightly higher than the melting point of the core polymer for heat setting treatment, the sheath polymer is near the softening point, so that the heat setting is facilitated.

In some embodiments of the present invention, the hot-melt area protrudes out of the surface layer of the mesh body after being heat-set to form a three-dimensional shape, and a height H of the three-dimensional shape protruding out of the surface layer of the mesh body has a range of values: h is more than 0 mm and less than or equal to 3mm, and the height of the three-dimensional modeling can be realized by adjusting the protruding height of the three-dimensional pattern of the hot-pressing die in the heat setting treatment process.

The manufacturing method of the local three-dimensional warp-knitted mesh cloth in the embodiment comprises the following steps:

s1, weaving, namely, threading on a warp knitting machine according to the tissue requirement, and integrally weaving the mesh cloth body;

s2, performing heat setting treatment, installing a hot-pressing die on the seamless hot-pressing laminating machine in an alignment manner, arranging a three-dimensional shape on the hot-pressing die, putting the mesh cloth body woven in the step S1 into the hot-pressing die, starting the seamless hot-pressing laminating machine to preheat to a preset temperature T1, and after the preset temperature T1 is reached, starting the seamless hot-pressing laminating machine to perform hot-pressing setting at a hot-pressing temperature T2, wherein the preset temperature T1 and the hot-pressing temperature T2 satisfy the following relational expression: tm1 is not less than T1 and not more than Tm2, Tm1 is not less than T2 and not more than Tm 2.

And S3, cooling, namely cooling the mesh body subjected to the heat setting in the step S2 to obtain a finished product.

In some embodiments of the present invention, after step S1, the web body is laser cut to a certain shape by a laser machine, and after the laser cutting, the web body with a certain shape is heat-set in step S2.

Further, the hot pressing mold is divided into an upper mold and a lower mold, the upper mold is provided with a convex three-dimensional shape, the lower mold is provided with a concave three-dimensional shape matched with and aligned with the upper mold, and the temperatures of the upper mold and the lower mold are hot pressing temperatures T2.

It can be understood that the manufacturing method in this embodiment may be used to perform a heat setting process on the warp-knitted mesh fabric by replacing the hot pressing mold with different three-dimensional shapes, wherein the preset temperature T1 of the upper mold and the lower mold may be the same as the hot pressing temperature T2, and various parameter designs in the heat setting process may be set according to the composition of the hot melt yarns of the mesh fabric body and the thickness of the fabric thereof. By adopting the manufacturing method, various specific three-dimensional shapes can be formed at the local part of the mesh cloth body by matching with different hot pressing dies, the diversified requirements of the market can be met, and the formed local three-dimensional warp knitted mesh cloth has stable size and is difficult to stretch and deform.