CN212560643U - Local three-dimensional warp knitting net cloth - Google Patents
Local three-dimensional warp knitting net cloth Download PDFInfo
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- CN212560643U CN212560643U CN202020761145.4U CN202020761145U CN212560643U CN 212560643 U CN212560643 U CN 212560643U CN 202020761145 U CN202020761145 U CN 202020761145U CN 212560643 U CN212560643 U CN 212560643U
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Abstract
The utility model discloses a local three-dimensional warp knitting net cloth, a serial communication port, include: 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 three-dimensional modeling of the local three-dimensional warp-knitted mesh fabric of the utility model has more obvious and more lasting stability and better size stability.
Description
Technical Field
The utility model relates to a warp knitting fabric post-processing field, in particular to local three-dimensional warp knitting net cloth
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.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a local three-dimensional warp knitting screen cloth can satisfy different three-dimensional molding's demand on the warp knitting screen cloth.
In order to achieve the above purpose, the utility model 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.
According to the utility model discloses local three-dimensional warp knitting net cloth has following technological effect at least: 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 have preferred dimensional stability, when carrying out hot press setting to the hot melt yarn that sheath portion polymer melting point is less than pistil portion polymer melting point among the prior art, sheath portion can be totally fused into viscous state and form permanent memory pattern, compares here, the utility model provides a hot melt yarn's pattern memory effect does benefit to the reprocessing nature that gives the screen cloth body preferred.
According to some embodiments of the utility model, the sheath portion polymer with the pistil portion polymer is polyester polymer, and polyester polymer's wearability is good, and it is used for promoting the wear-resisting rerum natura of warp knitting net cloth.
According to some embodiments of the invention, the first yarn is a hot melt yarn and the second yarn is a regular fiber yarn.
According to some embodiments of the present invention, the conventional fiber yarn is a polyester or a polyamide or a composite yarn of polyester and polyamide.
According to some embodiments of the utility model, the hot melt yarn is full orientation polyester fiber silk FOY, and its extension is little, and the shrinkage factor is low, and size is stable.
According to some embodiments of the present 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 the utility model discloses a some embodiments, three-dimensional molding protrusion in the high H value scope on the top layer of screen cloth body does: h is more than 0 and less than or equal to 3 mm.
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 illustration of a material object of a partial 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 solution of the present invention, the present invention is explained in detail with reference to the specific embodiments below.
Referring now to fig. 1-3, the following examples are made of the present invention, using the three-dimensional "PAIHO" logo molding made on shoe-type warp-knitted fabrics:
as shown in fig. 1, according to the utility model discloses local three-dimensional warp knitting screen cloth, including the screen cloth body, this screen cloth body is woven by first yarn and second yarn on the tricot machine an organic whole at least, and first yarn and/or second yarn are the hot melt yarn, only need add the integrative weaving of hot melt yarn promptly in the screen cloth body can, the screen cloth body includes that the hot melt is regional, and this hot melt is regional to form the stereogram in the top layer of screen cloth body after heat setting is handled, can cooperate different hot pressing mould to carry out various local three-dimensional molding's hot briquetting to the screen cloth body to satisfy the diversified demand in 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 that uses in this embodiment is different with the hot melt yarn that uses among the prior art heat setting processing, and the sheath portion polymer melting point of the hot melt yarn that uses among the prior art is less than core portion polymer melting point, when can be convenient for carry out certain hot pressing temperature to it and stereotype, guarantees that sheath portion melts completely into the viscous state, and with adjacent yarn bonds each other integratively, its sheath portion melts completely into the viscous state and can form permanent memory pattern, can't carry out moulding processing once more and handle, compare with this, the utility model provides a hot melt yarn's pattern memory effect does benefit to the reprocessing nature of giving the screen cloth body preferred, is convenient for satisfy different technological demands.
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 numerical values in the relation all represent temperature and the unit is centigrade (DEG C), the temperature difference range between the melting point of the sheath polymer and the melting point of the core polymer is limited, so that when the hot-pressing temperature is equal to or slightly higher than the melting point of the core polymer for hot-forming treatment, the sheath polymer is near the softening point, and the hot-forming treatment is convenient.
The utility model discloses an in some embodiments, the hot melt is regional to be handled the back protrusion in the top layer of screen cloth body in order to form stereomodeling through heat setting, and this stereomodeling protrusion is in the high H value scope on the top layer of screen cloth body: 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 the step S1 is completed, the laser cutting of the mesh body to a certain shape is performed in advance by the laser machine, and after the laser cutting is completed, the heat setting process of the step S2 is performed on the mesh body with a certain shape.
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.
Example one
The warp knitting machine with two guide bars is adopted to knit the mesh cloth body, the mesh cloth body is a single-layer fabric, the first yarn penetrated by the first guide bar is 100D/48F terylene semi-optical hot melt yarn, a warp pile tissue is adopted, the yarn padding number is 1-0/2-3//, and the melting points of a sheath polymer and a core polymer of the first yarn respectively satisfy the following relational expressions: the Tm1 is 130 ℃, Tm2 is 110 ℃, the second yarn penetrated by the second guide bar is 150D/48F terylene semi-gloss, an open chain stitch is adopted, and the padding yarn number is 0-1/1-0//. After the mesh body is woven, adopting the mesh body of the laser shoe-out type of the laser machine, and then carrying out heat setting treatment on the mesh body, wherein the hot pressing parameters of the heat setting treatment are set as follows: the preset temperature T1 is 110 ℃, the hot pressing temperature T2 of both the upper die and the lower die is 110 ℃, the hot pressing time is 30s, the hot pressing pressure is 20kg, the upper die is a convex "PAIHO" logo pattern, and the lower die is a concave "PAIHO" logo pattern. It should be understood that, when the mesh fabric body is not subjected to the high-temperature heat setting treatment, the yarn structure effect graph is as shown in fig. 2, after the mesh fabric body is subjected to the high-temperature heat setting treatment, the hot melt yarns are partially melted and are bonded with adjacent yarns, the yarn structure effect graph is as shown in fig. 3, and after the mesh fabric body subjected to the heat setting treatment is cooled to the normal temperature, the yarns are hardened and are not easy to stretch, so that the dimensional stability and the wear resistance of the fabric are improved.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (7)
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 composite yarns comprise sheath portion polymers and core portion polymers, the melting point Tm1 of the sheath portion polymers is higher than the melting point Tm2 of the core portion polymers, 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 fiber yarn.
4. The partial three-dimensional warp-knitted mesh fabric according to claim 3, wherein the 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.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020761145.4U CN212560643U (en) | 2020-05-08 | 2020-05-08 | Local three-dimensional warp knitting net cloth |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020761145.4U CN212560643U (en) | 2020-05-08 | 2020-05-08 | Local three-dimensional warp knitting net cloth |
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| CN212560643U true CN212560643U (en) | 2021-02-19 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111534918A (en) * | 2020-05-08 | 2020-08-14 | 东莞百宏实业有限公司 | Local three-dimensional warp-knitted mesh fabric and manufacturing method thereof |
| CN113183548A (en) * | 2021-04-16 | 2021-07-30 | 河北工业职业技术学院 | Conical array type radar stealth textile material and preparation method thereof |
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2020
- 2020-05-08 CN CN202020761145.4U patent/CN212560643U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111534918A (en) * | 2020-05-08 | 2020-08-14 | 东莞百宏实业有限公司 | Local three-dimensional warp-knitted mesh fabric and manufacturing method thereof |
| CN111534918B (en) * | 2020-05-08 | 2024-02-13 | 东莞百宏实业有限公司 | Local three-dimensional warp knitting mesh cloth and manufacturing method thereof |
| CN113183548A (en) * | 2021-04-16 | 2021-07-30 | 河北工业职业技术学院 | Conical array type radar stealth textile material and preparation method thereof |
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