Close-fitting fabric with good heat retention property in winter

Abstract

The utility model provides a close-fitting fabric with good warmth retention property in winter, which comprises a heating layer, a heat preservation layer and a windproof layer which are sequentially arranged, the heating layer is formed by weaving German yarns, and the heat preservation layer comprises water absorption expansion yarns and hollow heat preservation yarns which are alternately arranged. The German yarn has the functions of moisture absorption and heating and can provide a certain heating effect for a user when the user wears the German yarn, meanwhile, the heat preservation layer is arranged, the heat preservation layer is used for avoiding heat loss of the body of the user, and the hollow heat preservation yarn contains a large amount of still air, is a poor heat conductor and has excellent heat preservation performance. The diameter of the water absorption expansion yarn can be increased after water absorption, so that the tightness degree of the heat preservation layer is obviously increased, when the user sweats, wind can be further prevented from penetrating through the heat preservation layer, large fluctuation of the body temperature of the user after sweating is avoided, and then good wearing experience is brought.

Description

Technical Field

[0001] The utility model relates to the field of textile fabrics, in particular to a close-fitting fabric with good warmth retention in winter. Background Art

[0002] In the cold weather of autumn and winter, thermal underwear has become a daily must-have item for people to keep warm. Currently, there are various thermal underwear products on the market. The primary requirements for thermal underwear fabrics are comfort, softness, good warmth retention, elasticity and durability.

[0003] Compared to woven fabrics, knitted fabrics are more suitable for making intimate apparel. Knitted fabrics are categorized by weaving method into two types: weft knitted fabrics and warp knitted fabrics. Weft knitted fabrics are often made from low-stretch polyester yarn or shaped polyester yarn, nylon yarn, cotton yarn, wool yarn, and other raw materials. They are woven on various weft knitting machines using plain stitch, modified plain stitch, ribbed plain stitch, double ribbed plain stitch, jacquard stitch, and terry stitch. Heat-generating fibers are a new type of material that self-generates and warms the body. Currently, heat-generating fibers are used in textiles for winter clothing.

[0004] Although existing heat-generating textile fabrics used in winter clothing have good heat-generating properties, they often have poor insulation and windproof properties. Some people like to exercise in winter to keep out the cold, but these heat-generating textile fabrics have poor sweat-absorbing properties. Furthermore, due to their poor windproof properties, cold winds can cause significant fluctuations in body temperature, making it easy to catch a cold. Therefore, we propose a close-fitting fabric with good winter warmth retention. Utility Model Content

[0005] In order to overcome the problems of poor warmth retention and windproof effect in the prior art, the utility model provides a close-fitting fabric with good warmth retention in winter.

[0006] The utility model adopts the following technical solutions.

[0007] A close-fitting fabric with good warmth retention in winter, comprising a heating layer, a heat-insulating layer and a windproof layer arranged in sequence, wherein the heating layer is woven from Delong yarn, and the heat-insulating layer comprises water-swelling yarn and hollow heat-insulating yarn arranged alternately;

[0008] The coil length of the heating layer is 300mm / 100 coils, the coil length of the windproof layer is 380mm / 100 coils, the windproof layer is woven from 12tex polyester high-twist yarn, and the linear density of the velvet yarn is 14.5tex;

[0009] The hollow thermal insulation yarn includes a plurality of spirally wound hollow fibers; each of the hollow fibers is provided with a first cavity along its axial direction, and the outer wall of the hollow fiber has alternately arranged sealing recesses and sealing protrusions.

[0010] Preferably, when the plurality of hollow fibers are spirally wound, the sealing depressions and sealing protrusions of two adjacent hollow fibers are engaged with each other; and a second cavity is formed between the plurality of hollow fibers; and the cross-sectional area of ​​the first cavity is smaller than the cross-sectional area of ​​the second cavity.

[0011] Preferably, the water-absorbing and swelling yarn comprises an swelling yarn core, a hygroscopic yarn, a moisture-conducting layer and a covering layer arranged in sequence from the inside to the outside, and the length direction of several of the hygroscopic yarns is the same as the length direction of the swelling yarn core and are arranged around the outside of the swelling yarn core.

[0012] Preferably, the moisture-absorbing yarn is twisted from viscose fiber; the moisture-conducting layer is composed of a plurality of moisture-conducting yarns spirally wound on the outside of the expanded yarn core, and the moisture-conducting yarn is twisted from vinylon fiber; the covering layer is composed of covering yarns spirally wound on the outside of the moisture-conducting layer, and the covering yarns are twisted from polyester special-section fibers with a cross-shaped cross-section.

[0013] Preferably, the water-swellable yarn is 16tex, and the hollow thermal insulation yarn is 14tex.

[0014] The beneficial effects of the utility model are:

[0015] The utility model provides a close-fitting fabric with good winter warmth retention, comprising a heating layer, a thermal insulation layer, and a windproof layer arranged in sequence. The heating layer is woven from velvet yarn, and the thermal insulation layer comprises water-absorbing and expanding yarns and hollow thermal insulation yarns arranged alternately. The velvet yarn has the function of absorbing moisture and generating heat, providing a certain heating effect when worn by the user. The thermal insulation layer is also provided. To prevent heat loss from the user's body, the hollow thermal insulation yarn contains a large amount of still air inside, making it a poor conductor of heat and having excellent thermal insulation performance. The water-absorbing and expanding yarn increases in diameter after absorbing water, significantly increasing the tightness of the thermal insulation layer. When the user sweats, the layer can further prevent wind from passing through, thereby avoiding large fluctuations in the user's body temperature after sweating, thereby providing a good wearing experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0017] Figure 1 This is a schematic structural diagram of an embodiment of the present utility model;

[0018] Figure 2 This is a cross-sectional view of a water-swellable yarn according to an embodiment of the present invention;

[0019] Figure 3 This is a cross-sectional view of a hollow thermal insulation yarn according to an embodiment of the present invention.

[0020] Explanation of the accompanying drawings: 1. Heating layer; 2. Thermal insulation layer; 21. Water-absorbing and expanding yarn; 211. Expanded yarn core; 212. Moisture-absorbing yarn; 213. Moisture-conducting layer; 214. Covering layer; 22. Hollow thermal insulation yarn; 221. Hollow fiber; 2211. Sealing depression; 2212. Sealing ridge; 222. First cavity; 223. Second cavity; 3. Windproof layer. DETAILED DESCRIPTION

[0021] The accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. In order to better illustrate this embodiment, certain components of the accompanying drawings may be omitted, enlarged, or reduced in size, and do not represent the actual dimensions of the product.

[0022] For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the drawings. The technical solution of the present utility model will be further described below in conjunction with the drawings and embodiments.

[0023] A close-fitting fabric with good warmth retention in winter, comprising a heating layer 1, a thermal insulation layer 2, and a windproof layer 3 arranged in sequence, wherein the heating layer 1 is woven from velvet yarn, and the thermal insulation layer 2 comprises water-absorbing and swelling yarns 21 and hollow thermal insulation yarns 22 arranged alternately. The thermal insulation layer in this embodiment meets the test standard FZ / T73036-2010 for hygroscopic and heat-generating knitted underwear and has the ability to absorb moisture and generate heat. According to an article entitled "Research Progress of Hygroscopic and Heat-generating Fibers" published by Du Kai and Liu Zhengqin in "Shanghai Wool and Linen Technology", the mechanism of hygroscopic and heat-generating action is described in detail - that is, the strong hygroscopicity of hygroscopic and heat-generating fibers is used to capture water molecules with high kinetic energy in the air and adsorb them to the fiber surface. According to the law of conservation of energy, the kinetic energy of the water molecules is converted into heat energy, thereby achieving the effect of generating heat.

[0024] The coil length of the heating layer 1 is 300mm / 100 coils, and the coil length of the windproof layer 3 is 380mm / 100 coils. The coil spacing of the windproof layer 3 is smaller, so it has better windproof ability.

[0025] The windproof layer 3 is woven from 12tex polyester high-twist yarn, and the linear density of the velvet yarn is 14.5tex.

[0026] In some embodiments, the hollow thermal yarn comprises a plurality of hollow fibers 221 spirally wound; each hollow fiber 221 is provided with a first cavity 222 along its axial direction; the hollow fiber 221 is a profiled fiber, and the outer wall thereof has alternatingly arranged sealed recesses 2211 and sealed protrusions 2212:

[0027] When the plurality of hollow fibers 221 are spirally wound, the sealed recesses 2211 and the sealed protrusions 2212 between the adjacent two hollow fibers 221 are engaged; and the plurality of hollow fibers 221 surround a second cavity 223; the cross-sectional area of the first cavity 222 is smaller than the cross-sectional area of the second cavity 223. When the above structure is adopted, the plurality of hollow fibers 221 can support each other when surrounding the second cavity 223, and on the other hand, the area of contact between the hollow fibers 221 can be increased through the cooperation of the sealed recesses 2211 and the sealed protrusions 2212, thereby reducing the gap between the adjacent hollow fibers 221, maximizing the sealing of the second cavity 223, and improving the thermal insulation of the hollow thermal yarn 22. The hollow fiber 221 is made of hollow polyester material.

[0028] In some embodiments, the water-absorbing and swelling yarn 21 comprises, from inside to outside, a swelling yarn core 211, a moisture-conducting layer 213, and a cladding layer 214; the water-absorbing and swelling yarn 21 is composed of the swelling yarn core 211 and a plurality of moisture-absorbing yarns 212 wrapped outside the swelling yarn core 211; the length direction of the plurality of moisture-absorbing yarns 212 is consistent with the length direction of the swelling yarn core 211 and surrounds the outside of the swelling yarn core 211.

[0029] In some embodiments, the moisture-absorbing yarn 212 is twisted from viscose fiber; the moisture-conducting layer 213 is composed of a plurality of moisture-conducting yarns spirally wound outside the swelling yarn core 211, the moisture-conducting yarn is twisted from vinylon fiber, and the cladding layer 214 is composed of a cladding yarn spirally wound outside the moisture-conducting layer 213, the cladding yarn is twisted from polyester profiled cross-section fiber with cross-shaped cross section.

[0030] The material of the swelling yarn core 211 is water-absorbing and swelling rubber (WSR), thereby ensuring that the water-absorbing and swelling yarn 21 as a whole has stable water-absorbing and deforming performance; the moisture-absorbing yarn 212 is arranged outside the swelling yarn core 211, which ensures that the moisture-absorbing yarn 212 can fully contact the swelling yarn core 211, controls the swelling rate of the swelling yarn core 211, avoids the over-swelling of the swelling yarn core 211, and enables the swelling yarn core 211 to absorb more water from the moisture-absorbing yarn 212, thereby ensuring the effective swelling of the swelling yarn core 211; the moisture-absorbing yarn 212 is twisted from viscose fiber, which has good water-absorbing performance and ensures that the moisture-absorbing yarn 212 has stable moisture-absorbing and water-storing performance.

[0031] When the wearer sweats, the diameter of the water-absorbing and swelling yarn 21 becomes larger, thereby reducing the gap of the thermal insulation layer 2, improving the windproof ability of the thermal insulation layer, and the water-absorbing and swelling yarn 21 also squeezes the hollow thermal insulation yarn 22 on both sides, improving the sealing performance of the hollow thermal insulation yarn 22, so that the thermal insulation effect of the thermal insulation layer 2 is also improved.

[0032] In some embodiments, the water-absorbing and swelling yarn 21 is 16 tex, and the hollow thermal insulation yarn 22 is 14 tex.

[0033] The intimate wear fabric with good winter warmth described above can be prepared by the following method:

[0034] The fabric fabric organization is a weft set, which is prepared by a circular knitting machine, adopts full high heel needle or full low heel needle arrangement, and the machine number is 24 needles / 25.4mm. The De Rong yarn is used as the ground yarn, thereby forming the heating layer 1; the polyester strong twist yarn is used as the face yarn, thereby forming the windproof layer 3. A special yarn feeder is used to feed the hollow thermal insulation yarn 22 and the water-absorbing and swelling yarn 21 into the back of the upper and lower knitting needles before the loop is withdrawn at the needle barrel outlet. When the upper and lower knitting needles pad the new yarn loop, the hollow thermal insulation yarn 22 and the water-absorbing and swelling yarn 21 are clamped between the upper and lower loop columns, thereby forming the thermal insulation layer 2.

[0035] Obviously, the above embodiments of the utility model are only examples for clearly illustrating the utility model, and are not a limitation on the embodiments of the utility model. For ordinary skilled persons in the art, other different forms of changes or variations can be made on the basis of the above description. Here, all the embodiments are not required to be exhausted. Any modification, equivalent replacement and improvement made within the spirit and principle of the utility model should be included in the protection scope of the utility model claim.

Claims

1. A close-fitting fabric with good warmth retention in winter, characterized in that: It includes a heating layer, a heat-insulating layer and a windproof layer arranged in sequence, wherein the heating layer is woven from Delong yarn, and the heat-insulating layer includes water-absorbing and swelling yarns and hollow heat-insulating yarns arranged alternately; The coil length of the heating layer is 300mm / 100 coils, the coil length of the windproof layer is 380mm / 100 coils, the windproof layer is woven from 12tex polyester high-twist yarn, and the linear density of the velvet yarn is 14.5tex; The hollow thermal insulation yarn includes a plurality of spirally wound hollow fibers; each of the hollow fibers is provided with a first cavity along its axial direction, and the outer wall of the hollow fiber has alternately arranged sealing recesses and sealing protrusions.

2. The close-fitting fabric with good winter warmth retention according to claim 1, characterized in that: When the plurality of hollow fibers are spirally wound, the sealing depressions and sealing protrusions of two adjacent hollow fibers are engaged with each other; and a second cavity is formed between the plurality of hollow fibers; and the cross-sectional area of ​​the first cavity is smaller than the cross-sectional area of ​​the second cavity.

3. The close-fitting fabric with good winter warmth retention according to claim 1, characterized in that: The water-absorbing and swelling yarn comprises a swelling yarn core, a moisture-absorbing yarn, a moisture-conducting layer and a covering layer which are sequentially arranged from the inside to the outside. The length direction of several of the moisture-absorbing yarns is the same as that of the swelling yarn core and they are arranged around the outside of the swelling yarn core.

4. The close-fitting fabric with good winter warmth retention according to claim 3, characterized in that: The moisture-absorbing yarn is twisted from viscose fiber; the moisture-conducting layer is composed of a plurality of moisture-conducting yarns spirally wound on the outside of the expanded yarn core, and the moisture-conducting yarn is twisted from vinylon fiber; the covering layer is composed of a covering yarn spirally wound on the outside of the moisture-conducting layer, and the covering yarn is twisted from polyester special-shaped cross-sectional fibers with a cross-shaped cross-section.

5. The close-fitting fabric with good winter warmth retention according to claim 1, characterized in that: The water-swelling yarn is 16 tex, and the hollow heat-insulating yarn is 14 tex.

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