CN214736403U

CN214736403U - Thermal shape memory belt

Info

Publication number: CN214736403U
Application number: CN202120451514.4U
Authority: CN
Inventors: 郭海洋; 肖峰
Original assignee: Jiangsu Duwei New Material Science And Technology Co ltd
Current assignee: Jiangsu Duwei New Material Science And Technology Co ltd
Priority date: 2021-03-02
Filing date: 2021-03-02
Publication date: 2021-11-16
Anticipated expiration: 2031-03-02

Abstract

The utility model discloses a hot shape memory area, include: the core layer is formed by interweaving warp yarns and weft yarns, at least one of the warp yarns and the weft yarns is a shape memory yarn, and the shape memory yarn is a shape memory covering yarn; the surface of the core layer is provided with a wear-resistant layer, and the thickness of the wear-resistant layer is 5-15% of that of the core layer; the thermal shape memory belt has strong wrinkle resistance and good elasticity, the yarns and the fabrics are easy to recover to the original states memorized by the thermal shape memory belt at a certain temperature to eliminate the deformation, and the surface of the core layer is provided with the wear-resistant layer which is not easy to wear and has long service life.

Description

Thermal shape memory belt

Technical Field

The utility model relates to a textile technology field, more specifically the utility model relates to a hot shape memory area that says so.

Background

Thermosensitive shape memory refers to a property that a product having an initial shape (initial state) can recover its initial shape by the action of heat after being fixed by deformation (deformed state). The heat-sensitive shape memory fabric is a fabric having heat-sensitive shape memory properties, which is formed by weaving shape memory yarns, which are spun from shape memory filaments or spun yarns, and then interweaving the shape memory yarns with other yarns or filaments. After the fabric with the initial form is deformed and fixed, the initial form can be recovered through the action of certain heat. The thermosensitive shape memory fabric plays an important role in the fields of biomedicine, textile clothing, toys, packaging, national defense, military industry and the like.

The woven belt is a flat fabric or a tubular fabric which is made by interweaving various yarns as warps and wefts, has various varieties and is widely used in various industrial departments such as clothes, shoe materials, cases, industry, agriculture, military needs, transportation and the like, but the existing woven belt is easy to wrinkle and deform, has poor wear resistance and is easy to wear,

therefore, how to provide a thermal shape memory tape is a problem that needs to be solved by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the technical problem in the prior art to a certain extent and providing a thermal shape memory belt.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a thermal shape memory band, comprising: the core layer is formed by interweaving warp yarns and weft yarns, at least one of the warp yarns and the weft yarns is a shape memory yarn, and the shape memory yarn is a shape memory covering yarn; the surface of the core layer is provided with a wear-resistant layer, and the thickness of the wear-resistant layer is 5-15% of that of the core layer.

Through the scheme, the thermal shape memory belt is strong in wrinkle resistance and good in elasticity, yarns and fabrics can be easily restored to the original states memorized by the thermal shape memory belt at a certain temperature to eliminate deformation, and the wear-resistant layer is arranged on the surface of the core layer, so that the thermal shape memory belt is not easy to wear and has long service life.

Furthermore, the wear-resistant layer is formed by blending polyurethane elastic fibers and polyvinyl formal fibers.

Furthermore, the shape memory covering yarn comprises a central yarn and a winding yarn, wherein the central yarn is a thermosensitive shape memory polyurethane filament, and the winding yarn covers the surface of the central yarn.

Adopt above-mentioned scheme, single yarn, many same kind yarns or many different kinds of yarns can be selected to wrap when the winding yarn is wrapped, and the fabric outward appearance of weaving is good more than adopting single cladding when the winding yarn adopts many syntropy claddings. The wrapping mode of the winding yarn is equidirectional wrapping or cross wrapping, and the equidirectional wrapping is S-direction wrapping or Z-direction wrapping.

Furthermore, the diameter ratio of the winding yarn to the central yarn is 0.1-0.2.

Furthermore, the winding yarn material is one or more of cotton fiber, fibrilia, wool fiber, silk fiber or chemical fiber.

By adopting the scheme, the winding yarn can select one or more of cotton fiber, wool fiber, hemp fiber, silk fiber and chemical fiber according to the textile with different purposes, and the textile formed by selecting the cotton fiber as the winding yarn has good air permeability, hygroscopicity and comfort, and also has good elasticity and shape recoverability; the fabric formed by selecting wool fiber as winding yarn is high-grade and comfortable, has good heat preservation and air permeability, and has good elasticity and plasticity. The fabric formed by selecting the fibrilia and the silk fiber as the winding yarn is natural, can be worn next to the skin, has good luster and elasticity, is crease-resistant, and is easy to recover after denaturation. The fabric formed by selecting the chemical fiber as the winding yarn has low price, high wear resistance and good contractibility.

Further, the diameter of each warp yarn and the average center distance between two adjacent warp yarnsRatio of ions E_T55 to 80 percent; the ratio E of the diameter of the weft yarn to the average center distance between two adjacent weft yarns_W42 to 49 percent.

By adopting the scheme, the ratio of the diameter of the warp yarn to the average center distance between two adjacent warp yarns is warp tightness, the ratio of the diameter of the weft yarn to the average center distance between two adjacent weft yarns is weft tightness, and the proper tightness is beneficial to improving the shape fixing rate and the shape recovery rate of the fabric; when the ratio of the warp tightness to the weft tightness is an optimal value, the shape memory effect of the fabric is good, the shape fixing rate of the fabric reaches over 86%, the shape recovery rate reaches over 82%, the strength of the fabric is high, and the appearance and the hand feeling of the fabric are good.

According to the above technical scheme, compare with prior art, the utility model discloses a hot shape memory area is placed for a long time and is produced the fold and warp, arranges this fabric in its deformation and reply near the thermal condition of temperature and handle under, and this fabric resumes its initial form very easily, and its shape fixation rate and shape recovery rate all have great improvement relative to prior art.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic structural diagram provided by the present invention.

Fig. 2 is a schematic diagram of a core layer structure provided by the present invention.

Fig. 3 is a cross-sectional view of the shape memory covered yarn of the present invention.

Wherein:

1-a core layer; 11-warp yarns; 12-the weft yarn; 111-center yarn; 112-wrap yarn; 2-abrasion resistant layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Fig. 1-3, an embodiment of the present invention discloses a thermal shape memory band, comprising: the core layer 1 is formed by interweaving warp yarns 11 and weft yarns 12, the warp yarns 11 and/or the weft yarns 12 are shape memory yarns, and the shape memory yarns are shape memory covering yarns; the surface of sandwich layer 1 is equipped with wearing layer 2, and wearing layer 2 is formed by polyurethane elastic fiber and polyvinyl formal fibre blending, and wearing layer 2's thickness is 5 ~ 15% of sandwich layer 1 thickness, and difficult wearing and tearing have improved life.

Specifically, the shape memory covered yarn comprises a central yarn 111 and a winding yarn 112, wherein the central yarn 111 is a heat-sensitive shape memory polyurethane filament, and the winding yarn 112 is covered on the surface of the central yarn.

Advantageously, the diameter ratio of the diameter of the winding yarn 112 to the central yarn is 0.1-0.2, since not all the central yarn and all the winding yarns are broken but a part of the central yarn is broken when the yarn is stretched to be broken, and the broken part of the fiber is not broken at the same time, the breaking performance and the single yarn strength have a close relationship with the wrapping ratio of the winding yarn, as the diameter ratio of the winding yarn to the central yarn is increased, the friction force between the yarns is reduced, the winding yarn and the central yarn are easy to slide, and the stress distribution between the yarn central yarn and the winding yarn fiber is uneven due to the excessive ratio, the fiber breakage irregularity is aggravated, and the strength and elasticity of the yarn are reduced; on the contrary, the scale is reduced, the requirements on the coating machine are continuously improved, and the corresponding production cost is continuously increased. Therefore, when the diameter ratio of the winding yarn to the central yarn is 0.1-0.2, the tested yarn has good shape fixing rate and shape recovery rate, and the strength, elasticity and glossiness of the yarn are in good states.

In one embodiment, the wrapping yarn 112 is made of one or more of cotton fiber, hemp fiber, wool fiber, silk fiber, or chemical fiber. The winding yarn can be selected from one or more of cotton fiber, wool fiber, hemp fiber, silk fiber and chemical fiber according to the textile of different purposes, and the textile formed by selecting the cotton fiber as the winding yarn has good air permeability, hygroscopicity and comfort, and also has good elasticity and shape recoverability; the fabric formed by selecting wool fiber as winding yarn is high-grade and comfortable, has good heat preservation and air permeability, and has good elasticity and plasticity. The fabric formed by selecting the fibrilia and the silk fiber as the winding yarn is natural, can be worn next to the skin, has good luster and elasticity, is crease-resistant, and is easy to recover after denaturation. The fabric formed by selecting the chemical fiber as the winding yarn has low price, high wear resistance and good contractibility.

Advantageously, the ratio E of the diameter of each warp yarn to the average central distance between two adjacent warp yarns_T55 to 80 percent; the ratio E of the diameter of a weft yarn to the mean center distance between two adjacent weft yarns_W42 to 49 percent; the ratio of the diameter of the warp yarn to the average center distance between two adjacent warp yarns is warp tightness, the ratio of the diameter of the weft yarn to the average center distance between two adjacent weft yarns is weft tightness, and the proper tightness is beneficial to improving the shape fixing rate and the shape recovery rate of the fabric.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A thermal shape memory band, comprising: the core layer (1) is formed by interweaving warp yarns (11) and weft yarns (12), and the warp yarns (11) and/or the weft yarns (12) are shape memory coated yarns; the surface of the core layer (1) is provided with a wear-resistant layer (2), and the thickness of the wear-resistant layer (2) is 5-15% of that of the core layer (1).

2. The thermal shape memory belt according to claim 1, wherein the wear layer (2) is formed by blending polyurethane elastic fiber and polyvinyl formal fiber.

3. The thermal shape memory tape according to claim 1, wherein the shape memory covering yarn comprises a central yarn (111) and a wrapping yarn (112), the central yarn (111) is a heat-sensitive shape memory polyurethane filament, and the wrapping yarn (112) is wrapped on the surface of the central yarn.

4. The thermal shape memory tape according to claim 3, wherein the diameter ratio of the wrapping yarn (112) to the central yarn is 0.1 to 0.2.

5. The thermal shape memory tape according to claim 4, wherein the wrapping yarn (112) is made of one or more of cotton fiber, hemp fiber, wool fiber, silk fiber, or chemical fiber.

6. A thermal shape memory tape according to claim 1, wherein the ratio E of the diameter of each warp yarn (11) to the average center distance between two adjacent warp yarns (11) is_T55 to 80 percent; the ratio E of the diameter of the weft yarn (12) to the average center distance between two adjacent weft yarns_W42 to 49 percent.