Temperature-responsive double-layer bonded fabric and method for manufacturing the same

Abstract

The application discloses a kind of temperature response type double-layer interlocking fabric and preparation method thereof, including surface layer, inner layer and interlocking yarn, surface layer and inner layer form interlocking by interlocking yarn, inner layer is formed by inner layer warp yarn and inner layer weft yarn interweave, inner layer warp yarn and inner layer weft yarn all include core line and ornament line, fabric has first state, second state and third state, the length and diameter of interlocking yarn in first state are all greater than the length and diameter in second state;The length and diameter of core line in first state are all less than the length and diameter in second state, the length and diameter of core line in third state are all greater than the length and diameter in second state;The length and diameter of ornament line in third state are all less than the length and diameter in second state.The double-layer interlocking fabric of the application can adjust air layer volume content in fabric with temperature change, to realize the function of storing and releasing heat, can form stable and comfortable temperature for people in the closed space of fabric contact skin.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of textiles, in particular to a temperature-responsive double-layer interwoven fabric and a preparation method thereof. BACKGROUND

[0002] The development of economy promotes people's pursuit of diverse life, and people's life needs have long been beyond food, clothing, shelter and transportation, and more attention is paid to the dual satisfaction of spirit and body. Outdoor activities such as mountaineering, skiing and hiking are becoming more and more popular. In these life scenes, ordinary clothes cannot meet the needs of instant adaptation to extreme environmental changes. In harsh weather conditions, keeping the body warm is crucial to prevent hypothermia and cold injury. Therefore, the development of windproof and warm-keeping fabrics that respond to changes in environmental temperature in real time is of great significance.

[0003] In the prior art, by using a chip sensor or a battery and additional warm-keeping devices, the clothes have the function of self-regulating temperature, which can automatically adjust according to the environment and the user's needs, so that the clothes can still maintain a temperature that makes the user feel comfortable in harsh weather conditions. However, the adaptive behavior of such smart clothes may cause excessive heating of the clothes and fabric, and the use of additional warm-keeping devices will increase energy consumption, and the overall safety performance of wearing is difficult to guarantee, and it also has a negative impact on the environment. SUMMARY

[0004] Therefore, in order to overcome the defects of the prior art, the purpose of the present application is to provide a temperature-responsive double-layer interwoven fabric and a preparation method thereof, which can adjust the fabric porosity, pile length and air layer volume content according to the change of temperature, achieve the effect of windproof and warm-keeping in low temperature environment and improve the safety of wearing clothes, and also reduce energy consumption.

[0005] In order to achieve the above purpose, the technical scheme adopted by the present application is as follows:

[0006] One object of the present application is to provide a temperature-responsive double-layer interknitted fabric, comprising a surface layer, a back layer and interknitted yarns of the surface layer and the back layer, the surface layer and the back layer being interknitted by the interknitted yarns, the surface layer being interwoven by surface layer warp yarns and surface layer weft yarns, the back layer being interwoven by back layer warp yarns and back layer weft yarns, the back layer warp yarns and the back layer weft yarns each comprising a core yarn and a decorative yarn, the fabric having a first state, a second state and a third state, the air layer volume content between the surface layer and the back layer of the fabric in the first state being greater than the air layer volume content between the surface layer and the back layer of the fabric in the second state, the length and the diameter of the interknitted yarns in the first state being greater than the length and the diameter of the interknitted yarns in the second state; the length and the diameter of the core yarn in the first state being less than the length and the diameter of the core yarn in the second state, the length and the diameter of the core yarn in the third state being greater than the length and the diameter of the core yarn in the second state; the length and the diameter of the decorative yarn in the third state being less than the length and the diameter of the decorative yarn in the second state.

[0007] According to some preferred embodiments of the present application, the ambient temperature in the first state is less than the ambient temperature in the second state, and the ambient temperature in the second state is less than the ambient temperature in the third state.

[0008] According to some preferred embodiments of the present application, the ambient temperature in the first state is 0-15℃, the ambient temperature in the second state is 15-25℃, and the ambient temperature in the third state is 25-40℃. In some embodiments of the present application, when the fabric is in the second state, the interknitted yarns, the core yarns and the decorative yarns are all in a stable state, and the shapes and sizes of the three in the second state are original shapes and sizes. During the transition of the fabric from the second state to the first state, the interknitted yarns are elongated and thinned, i.e. the length of the interknitted yarns increases and the diameter of the interknitted yarns decreases; the core yarns are shortened and thickened, i.e. the length of the core yarns decreases and the diameter of the core yarns increases; and the decorative yarns do not change. During the transition of the fabric from the second state to the third state, the interknitted yarns do not change; the core yarns are elongated and thinned, i.e. the length of the core yarns increases and the diameter of the core yarns decreases; and the decorative yarns are shortened and thickened, i.e. the length of the decorative yarns decreases and the diameter of the decorative yarns increases.

[0009] According to some preferred embodiments of the present application, the binding yarn and the decorative yarn are both shape memory materials, and the core yarn is a thermal expansion and contraction material. In some embodiments of the present application, the binding yarn is a polyester-based shape memory yarn, such as polytrimethylene terephthalate; the decorative yarn is a polyethylene-vinyl acetate copolymer shape memory fiber; and the core yarn is a combination of one or more of polyurethane, polystyrene or polyethylene. In some embodiments of the present application, the binding yarn is a temperature-responsive shape memory material, which remains stable in shape and size when the temperature is greater than 15°C, and which will elongate and become thinner when the temperature is in the range of 8-15°C, and which will return to its original shape when the temperature is greater than 15°C after elongation and thinning. The decorative yarn of the pulled-loop fancy yarn used for the back warp yarn and the back weft yarn is also a temperature-responsive shape memory material, which remains stable in shape and size when the temperature is less than 25°C, and which will shorten and become thicker when the temperature is in the range of 25-40°C, and which will return to its original shape when the temperature is less than 25°C after shortening and thickening. The core yarn of the pulled-loop fancy yarn used for the back warp yarn and the back weft yarn is a thermal expansion and contraction material, which remains stable in shape and size when the temperature is in the range of 15-25°C, and which will elongate and become thinner, i.e. increase in length and decrease in diameter, when the temperature is in the range of 25-40°C; and which will shorten and become thicker, i.e. decrease in length and increase in diameter, when the temperature is in the range of 0-15°C.

[0010] According to some preferred embodiments of the present application, the surface warp yarn and the surface weft yarn are nylon or polyester, and the back warp yarn and the back weft yarn are both pulled-loop fancy yarns. In some embodiments of the present application, the surface warp yarn and the surface weft yarn are both nylon or polyester elastic core-spun yarns, which have good elasticity and shrinkage, and the core yarn shrinks to increase the tightness of the fabric. The back warp yarn and the back weft yarn are both pulled-loop fancy yarns, which include a core yarn, a decorative yarn and a binding yarn, and are obtained by using a fancy twisting machine and a pulling machine. The back layer obtained by interweaving the pulled-loop fancy yarns has a velvet surface and has a warm-keeping function. Due to the difference in shrinkage between the surface and the back layer, when the surface warp yarn and the surface weft yarn shrink, the back layer will be raised by the binding yarn, so that the fabric has a three-dimensional micro-bubble structure and has a heat-insulating effect.

[0011] Further, when the fabric is converted from the second state to the third state (temperature increases), the core yarn of the pull-out fancy yarn is elongated and thinned, the decoration yarn is shortened and thickened, the arrangement gap of the inner layer yarn is increased, the fabric porosity is further increased, which is beneficial to heat dissipation and moisture discharge; when the fabric is converted from the second state to the first state (temperature decreases), the connecting yarn is elongated and thinned, the fabric bulkiness is increased, the air layer volume content in the fabric is increased, which is beneficial to increase the warmth retention of the fabric; at the same time, the core yarn of the pull-out fancy yarn is contracted and thickened, the arrangement gap of the inner layer yarn is reduced, the fabric tightness is increased, and the heat loss can be reduced.

[0012] According to some preferred embodiments of the present application, the denier of the surface layer warp yarn and the surface layer weft yarn is 45-55D, the count of the inner layer warp yarn and the inner layer weft yarn is 6-10S, and the count of the connecting yarn is 30-40D.

[0013] According to some preferred embodiments of the present application, the square inch density of the surface layer is 300-360T, and the square inch density of the inner layer is 30-60T. The surface layer is a tight fabric structure, the interlacing points of the surface layer yarn are dense, the shrinkage is large, and the tightness is high; the interlacing points of the inner layer yarn are sparse, and the structure is relatively fluffy.

[0014] According to some preferred embodiments of the present application, the weave of the surface layer is plain weave, and the weave of the inner layer is satin weave. The surface layer adopts nylon or polyester elastic core-spun yarn and plain weave, so that the formed fabric has high strength and good elasticity, and has the effects of windproof and wear resistance.

[0015] According to some preferred embodiments of the present application, the inner layer warp yarn and the inner layer weft yarn further comprise a fixed line, and the fixed line is nylon.

[0016] Another object of the present application is to provide a preparation method of the temperature-responsive double-layer connecting fabric.

[0017] Compared with the prior art, the temperature-responsive double-layer interlining fabric and the preparation method thereof have the following advantages: the double-layer interlining fabric is adopted, the core threads and the decorative threads of the interlining yarns, the core threads and the decorative threads of the warp threads and the weft threads of the inner layer can all respond to temperature changes, the core threads made of thermal expansion and contraction materials are combined with the interlining yarns and the decorative threads made of temperature-responsive shape memory materials, the surface layer and the inner layer form a quilted fabric through the interlining yarns, the volume content of the air layer in the fabric can be adjusted according to temperature changes, the function of storing and releasing heat can be realized, and a stable and comfortable temperature can be formed in a closed space where the fabric contacts the skin without using a chip sensor or a battery. The structure of the fabric changes with the ambient temperature, the temperature is automatically adjusted, the required wearing performance is achieved, the energy consumption is reduced, and the negative impact on the environment is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0019] Figure 1 The structure schematic diagram when the fabric in the preferred embodiment of the present application is converted from the second state to the first state and from the second state to the third state is shown.

[0020] Figure 2 The columnar diagram of the performance test data of the double-layer interlining fabric prepared in the preferred embodiment of the present application is shown.

[0021] In the drawings, the reference signs are as follows: surface layer-1, surface layer warp thread-11, surface layer weft thread-12, inner layer-2, inner layer warp thread-21, inner layer weft thread-22, interlining yarn-3. DETAILED DESCRIPTION

[0022] In order to make the person skilled in the art better understand the technical solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are only some of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should be within the scope of protection of the present application.

[0023] REFERENCE Figure 1The temperature-responsive double-layer interwoven fabric of the embodiment comprises a surface layer 1 and an inner layer 2 from top to bottom, and the surface layer 1 and the inner layer 2 are interwoven by interwoven yarn 3.

[0024] Further, the surface layer 1 adopts plain weave, the square inch density of the surface layer 1 is 300-360T, the denier of the surface layer warp yarn 11 and the surface layer weft yarn 12 is 45-55D, and the surface layer warp yarn 11 and the surface layer weft yarn 12 are both nylon or polyester elastic core-spun yarns, so that the formed fabric has high strength and good elasticity, and has the effects of windproof and wear resistance.

[0025] Further, the inner layer 2 adopts satin weave, the square inch density of the inner layer 2 is 30-60T, and the count of the inner layer warp yarn 21 and the inner layer weft yarn 22 is 6-10S. In the embodiment, the inner layer warp yarn 21 and the inner layer weft yarn 22 are both drawn hair fancy yarns, which include core wire, decoration wire and fixed wire. The core wire is a thermal expansion and cold contraction material, the decoration wire is a shape memory material, and the fixed wire is nylon. When the temperature is less than 25℃, the shape and size of the decoration wire remain stable, when the temperature is in the range of 25-40℃, the decoration wire will change to be shortened and thickened, and after the change, when the temperature is reduced to less than 25℃, the decoration wire will restore to the original state. The core wire maintains stable shape and size in the temperature range of 15-25℃, in the temperature range of 25-40℃, the core wire will be elongated and thinned by heat, i.e. the length increases and the diameter decreases, and in the temperature range of 0-15℃, the core wire will be shortened and thickened by cold, i.e. the length decreases and the diameter increases.

[0026] Further, the interwoven yarn 3 is a shape memory material, and the count of the interwoven yarn 3 is 30-40D. When the temperature is greater than 15℃, the shape and size of the interwoven yarn 3 remain stable, when the temperature is in the range of 8-15℃, the interwoven yarn 3 will change to be elongated and thinned, and after the change, when the temperature is greater than 15℃, the interwoven yarn 3 will restore to the original state.

[0027] In the embodiment, the fabric has a first state, a second state and a third state, the environmental temperature in the first state is 0-15℃, the environmental temperature in the second state is 15-25℃, and the environmental temperature in the third state is 25-40℃. As Figure 1As shown, when the fabric is in the second state, the binder yarn 3, the core yarn and the decorative yarn are all in a stable state. During the transition of the fabric from the second state to the first state, i.e. when the temperature decreases, the binder yarn 3 will be elongated and thinned, i.e. the length of the binder yarn 3 increases and the diameter decreases; the core yarn will be shortened and thickened, i.e. the length of the core yarn decreases and the diameter increases; and the decorative yarn will not change. During the transition of the fabric from the second state to the third state, i.e. when the temperature increases, the binder yarn 3 will not change; the core yarn will be elongated and thinned, i.e. the length of the core yarn increases and the diameter decreases; and the decorative yarn will be shortened and thickened, i.e. the length of the decorative yarn decreases and the diameter increases.

[0028] The working principle of the temperature-responsive double-layer binder fabric of the embodiment is as follows:

[0029] When the fabric is converted from the second state to the first state (temperature decreases), the surface layer 1 does not change, the binder yarn 3 is elongated and thinned, so that the loftiness between the surface layer 1 and the inner layer 2 is increased, and thus the air layer volume content between the surface layer 1 and the inner layer 2 is increased, which is beneficial to increase the warmth retention of the fabric; at the same time, the core yarn of the inner layer warp yarn 21 and the inner layer weft yarn 22 is contracted and thickened, so that the arrangement gap between the inner layer warp yarn 21 and the inner layer weft yarn 22 is reduced, thereby increasing the tightness of the fabric and reducing heat loss.

[0030] When the fabric is converted from the second state to the third state (temperature increases), the surface layer 1 does not change, and the binder yarn 3 does not change, the core yarn of the inner layer warp yarn 21 and the inner layer weft yarn 22 is elongated and thinned, so that the arrangement gap between the inner layer warp yarn 21 and the inner layer weft yarn 22 is increased, further increasing the porosity of the fabric, which is beneficial to heat dissipation and moisture discharge; at the same time, the decorative yarn of the inner layer warp yarn 21 and the inner layer weft yarn 22 is shortened and thickened, i.e. the length of the pile contacting the surface of the human skin is shortened, which is also beneficial to heat dissipation.

[0031] The preparation method of the temperature-responsive double-layer binder fabric of the embodiment includes the following steps:

[0032] In this embodiment, both the outer warp yarn 11 and the outer weft yarn 12 are made of 55D nylon elastic core-spun yarn, and both the inner warp yarn 21 and the inner weft yarn 22 are made of 10S napped fancy yarn. The napped fancy yarn includes a core yarn, a decorative yarn, and a fixing yarn. The core yarn is mainly composed of temperature-responsive polyurethane fiber, which has shape memory properties, and the mass percentage of polyurethane fiber in the core yarn is greater than 90%. The decorative yarn is mainly composed of polyethylene-vinyl acetate copolymer fiber, and the mass percentage of polyethylene-vinyl acetate copolymer fiber in the decorative yarn is greater than 90%. The fixing yarn is nylon. The knotting yarn 3 is made of 12S fine polypropylene terephthalate yarn with temperature response function. The ratio of the outer layer warp yarn 11 to the outer layer weft yarn 12 is 1:1, the ratio of the inner layer warp yarn 21 to the inner layer weft yarn 22 is 1:1, and the ratio of the outer layer warp yarn 11 to the inner layer warp yarn 21 and the knotting warp yarn is 2:2:1. The knotting warp yarn is interwoven with the outer layer weft yarn 11 and the inner layer weft yarn 22 in a one-up-one-down pattern on a rapier loom to prepare the double-layer knotted fabric. The outer layer 1 of the fabric uses a plain weave, and the inner layer 2 uses a five-end three-fly warp satin weave. The density per square inch of the outer layer 1 is 360T, and the density per square inch of the inner layer 2 is 30T.

[0033] like Figure 2 The figure shows the porosity, air volume content, and heat retention rate of the temperature-responsive double-layer bonded fabric prepared in this embodiment, measured at 0℃, 15℃, 25℃, and 35℃. As can be seen from the figure, the porosity of the double-layer bonded fabric in this embodiment gradually increases with increasing temperature, ensuring heat retention at low temperatures and heat dissipation at high temperatures. As the temperature gradually decreases, the air volume content in the fabric gradually increases, which is beneficial for increasing the fabric's heat retention. This is because the bonding yarn 3 elongates and thins as the temperature decreases, thereby increasing the fabric's bulkiness, which in turn helps increase the air volume content. Furthermore, the heat retention rate data also shows that the fabric's heat retention rate gradually increases with decreasing temperature, which is consistent with the porosity and air volume content data.

[0034] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A temperature-responsive double-layer bonded fabric, characterized in that, The fabric comprises an outer layer, an inner layer, and a connecting yarn. The outer layer and the inner layer are connected by the connecting yarn. The outer layer is woven from outer layer warp and weft yarns, and the inner layer is woven from inner layer warp and weft yarns. Both the inner layer warp and weft yarns include core yarns and decorative yarns. The fabric has three states: a first state, a second state, and a third state. In the first state, the air volume content between the outer and inner layers is greater than that in the second state. The length and diameter of the connecting yarns in the first state are greater than those in the second state. The length and diameter of the core yarns in the first state are less than those in the second state. The length and diameter of the core yarns in the third state are greater than those in the second state. The length and diameter of the decorative yarns in the third state are less than those in the second state. Both the connecting yarns and decorative yarns are shape memory materials, and the core yarns are thermally expandable and contractible materials. Both the inner layer warp and weft yarns are napped fancy yarns.

2. The temperature-responsive double-layer bonded fabric according to claim 1, characterized in that, The ambient temperature in the first state is lower than the ambient temperature in the second state, and the ambient temperature in the second state is lower than the ambient temperature in the third state.

3. The temperature-responsive double-layer bonded fabric according to claim 2, characterized in that, The ambient temperature in the first state is 0~15℃, the ambient temperature in the second state is 15~25℃, and the ambient temperature in the third state is 25~40℃.

4. The temperature-responsive double-layer bonded fabric according to claim 1, characterized in that, The denier of the outer warp and weft yarns is 45-55D, the count of the inner warp and weft yarns is 6-10S, and the count of the knotting yarn is 30-40D.

5. The temperature-responsive double-layer bonded fabric according to claim 1, characterized in that, The density of the outer layer is 300-360T per square inch, and the density of the inner layer is 30-60T per square inch.

6. The temperature-responsive double-layer bonded fabric according to claim 1, characterized in that, The outer layer uses a plain weave, and the inner layer uses a satin weave.

7. The temperature-responsive double-layer bonded fabric according to claim 1, characterized in that, The inner warp yarn and the inner weft yarn also include a fixing thread, which is nylon.

8. A method for preparing a temperature-responsive double-layer bonded fabric as described in any one of claims 1 to 7.

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