Anti-tear and anti-deformation cashmere blended fabric and preparation method thereof

Abstract

The invention relates to an anti-tear and anti-deformation cashmere blended fabric and a preparation method thereof. The fabric comprises an inner layer, an anti-tear layer and a surface layer which are arranged in sequence, the anti-tearing layer comprises a first supporting layer and a second supporting layer which are correspondingly arranged on the surface layer and the inner layer, concave sections and hot-pressing protruding sections are alternately arranged on the first supporting layer and the second supporting layer, and the concave sections and the hot-pressing protruding sections on the first supporting layer and the second supporting layer are symmetrically arranged. Placing cavities are formed between the concave sections of the first supporting layer and the second supporting layer, and an anti-tearing piece is arranged between the interiors of every two adjacent placing cavities. The anti-tearing layer is arranged between the inner layer and the surface layer, so that the anti-deformation effect, the anti-tearing effect and the down-proof effect of the fabric are improved, and the fabric is not prone to deformation after being washed with water for multiple times or under the action of external force, can still keep a good shape, is not prone to tearing, is more durable, is good in down-proof effect and can be used as the fabric of the down jacket.

Description

Technical Field

[0001] The invention belongs to the technical field of fabrics, and in particular relates to a tear-resistant and deformation-resistant cashmere blended fabric and a preparation method thereof. Background Art

[0002] Cashmere blended fabric refers to fabric made by mixing cashmere and other fibers in a certain proportion. The application of cashmere blended fabric in down jackets is mainly reflected in improving the warmth, comfort and texture of down jackets. Cashmere fibers are thin and long, with good thermal insulation properties. They can lock in air to form an insulating layer, effectively resisting the cold.

[0003] The thermal insulation performance of a down jacket mainly depends on the down filling inside it. If the tear resistance of the fabric is insufficient, once the fabric is torn or damaged, the down filling is likely to leak out, which will greatly affect the thermal insulation performance of the down jacket or even make it unusable. In addition, if the fabric is easily deformed, the clothing may be deformed during wearing, washing or storage, which will lead to uneven distribution of the down filling, thereby affecting the thermal insulation effect. Therefore, for cashmere blended fabrics used as down jacket fabrics, they are required to have good tear resistance, anti-deformation performance and anti-down drilling performance. To this end, the present invention provides a tear-resistant and anti-deformation cashmere blended fabric with anti-down drilling effect and a preparation method thereof. Summary of the invention

[0004] The purpose of the present invention is to provide a tear-resistant and deformation-resistant cashmere blended fabric and a preparation method thereof in order to solve the above-mentioned problems.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0006] A tear-resistant and deformation-resistant cashmere blended fabric, comprising an inner layer, an anti-tear layer, and a surface layer which are arranged in sequence;

[0007] The tear-resistant layer comprises a support layer 1 and a support layer 2 which are arranged on opposite sides of the surface layer and the inner layer in correspondence with each other, the support layer 1 and the support layer 2 are both alternately provided with concave sections and hot-pressed convex sections, the concave sections and hot-pressed convex sections on the support layer 1 and the support layer 2 are respectively symmetrically arranged with each other, a placement cavity is formed between the concave sections of the support layer 1 and the support layer 2, and an anti-tear member is arranged between two adjacent placement cavities;

[0008] The tear-resistant member comprises a pressing part, and two winding parts respectively located on both sides of the pressing part and connected to the pressing part, wherein the pressing part is fixed together with the hot pressing protruding section between two adjacent placement cavities by hot pressing;

[0009] A limiting piece for limiting the position of the anti-tearing piece is provided on the inner side of the placement cavity.

[0010] As a further optimization scheme of the present invention, the limiter comprises a limit slot body, two pressing sections respectively located on both sides of the limit slot body and connected to the limit slot body, the winding portion is hot-pressed and fixed on the limit slot body, the pressing section is located between the hot-pressed raised sections of the support layer 1 and the support layer 2 and is hot-pressed and fixed together with the winding portion and the hot-pressed raised sections of the support layer 1 and the support layer 2;

[0011] The two winding parts of the tear-resistant member have opposite winding opening directions, and the limiting members between two adjacent limiting members are arranged alternately up and down.

[0012] As a further optimization solution of the present invention, a pressing member for pressing the winding portion toward the limiting member is further provided inside the placement cavity;

[0013] The pressing member comprises a pressing portion, and two connecting sections respectively located at two sides of the pressing portion and connected to the pressing portion. The connecting sections are folded back and fixed together with the inner side surface of the placement cavity by heat pressing.

[0014] As a further optimization solution of the present invention, connecting sheets are provided between the hot-pressed raised sections on the support layer 1 and the support layer 2 between two adjacent tear-resistant parts.

[0015] As a further optimization solution of the present invention, the support layer 1, the support layer 2, the limiter, the anti-tear member, the connecting piece, and the pressure member are all made of polyamide material or polypropylene material.

[0016] A method for preparing tear-resistant and deformation-resistant cashmere blended fabric, the specific steps are as follows:

[0017] Step 1: Extruding the support layer 1 and the support layer 2 on the surface of the surface layer and the inner layer respectively through a mold, and extruding a limiting member in one of two adjacent concave sections of the support layer 1 or the support layer 2 through a mold;

[0018] Step 2: Winding the tear-resistant member at both ends at room temperature to form winding parts, respectively, with a pressing part left between the two winding parts;

[0019] Step three: Place the inner layer and the surface layer symmetrically up and down, so that the support layer 2 and the support layer 1 on the inner layer and the surface layer correspond to each other, that is, the hot-pressed raised sections and recessed sections of the support layer 1 and the support layer 2 correspond to each other, and a placement cavity is formed between the recessed sections of the support layer 1 and the support layer 2. Place the anti-tear part on the limiting part between the two adjacent placement cavities and heat and bond it to the limiting part at a heating temperature of 60-70°C. Place the connecting piece between the hot-pressed raised sections between the two adjacent anti-tear parts. After hot-pressing the hot-pressed raised sections of the inner layer, the surface layer, the support layer 1 and the support layer 2, and the correspondingly placed pressing parts, limiting parts and connecting pieces, you can obtain a tear-resistant and deformation-resistant cashmere blended fabric.

[0020] As a further optimization scheme of the present invention, in step one, a pressure piece is extruded through integral mold forming in the recessed section of support layer one or support layer two where no limit piece is provided; in step three, after the hot-pressed raised sections of the inner layer, surface layer, support layer one and support layer two, and the correspondingly placed pressing parts, limit pieces and connecting pieces are hot-pressed, the pressure piece and the inner side surface of the placement cavity are hot-pressed to obtain a tear-resistant and deformation-resistant cashmere blended fabric, the hot-pressing treatment temperature is 120-130°C, the hot-pressing pressure is 2-4MPa, the number of hot-pressing times is 1-3 times, and the hot-pressing time for each time is 3-5min.

[0021] As a further optimization scheme of the present invention, in step three, the hot pressing treatment temperature is 180-190°C, the hot pressing pressure is 5-7MPa, the number of hot pressing times is 4-7 times, and the hot pressing time for each time is 4-7min.

[0022] The beneficial effects of the present invention are:

[0023] 1) The present invention improves the anti-deformation effect, anti-tearing effect and anti-down drilling effect of the fabric by constructing an anti-tear layer between the inner layer and the surface layer, so that the fabric is not easy to deform after repeated washing or external force, and can still maintain a good shape, is not easy to tear, is more durable, and also has a certain anti-down drilling effect, and can be used as the fabric of down jackets;

[0024] 2) The present invention forms an anti-tear layer through the structural design of the limiting parts, the pressing parts, the pressing parts and the winding parts, and through the mutual coordination between them. The tear resistance performance test, the anti-deformation performance test and the anti-down drilling performance test have proved that the mutual coordination between the limiting parts, the pressing parts and the pressing parts can significantly improve the anti-deformation effect, the anti-tear effect and the anti-down drilling effect of the fabric.

[0025] 3) The present invention can improve the anti-deformation effect and anti-tearing effect of the fabric through the structural design of the limiter, the pressing member, the pressing part and the winding part, among which the improvement effect of the limiter is more significant;

[0026] 4) The present invention can significantly improve the anti-down drilling effect of the fabric through the structural design of the limiter, the pressing part and the winding part. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the cross-sectional structure of the cashmere blended fabric of Example 1 of the present invention.

[0028] Figure 2 It is a schematic diagram of the cross-sectional structure of the tear-resistant layer of Example 1 of the present invention.

[0029] Figure 3It is a schematic diagram of the cross-sectional structure of the tear-resistant layer of Example 2 of the present invention.

[0030] Figure 4 It is a schematic diagram of the cross-sectional structure of the limiting member of Embodiment 1-2 of the present invention.

[0031] Figure 5 It is a schematic diagram of the cross-sectional structure of the tear-resistant member of Example 1-2 of the present invention.

[0032] Figure 6 It is a schematic diagram of the cross-sectional structure of the pressing member of Example 2 of the present invention.

[0033] In the figure: 1, inner layer; 2, tear-resistant layer; 3, surface layer; 21, support layer 1; 22, support layer 2; 23, placement cavity; 24, limiting member; 241, limiting groove body; 242, pressing section; 25, tear-resistant member; 251, pressing part; 252, winding part; 26, connecting piece; 27, pressing member; 271, pressing part; 272, connecting section. DETAILED DESCRIPTION

[0034] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0035] 1. Materials

[0036] 1. In the present application, the inner layer 1 is a commercially available pure cotton fabric, and the outer layer 3 is a cashmere acetate fabric with the item number BC-24099AD purchased from Guangzhou Benchuang Textile Co., Ltd.

[0037] Unless otherwise specified, the methods used in this example are all known to those skilled in the art, and are conventional methods. The reagents and other materials used are all commercially available products unless otherwise specified.

[0038] 2. Methods

[0039] In order to explore the effects of different structural designs of the tear-resistant layer 2 on the anti-deformation performance, tear resistance and anti-down drilling performance of the tear-resistant and anti-deformation cashmere blended fabric, the technical solutions of the following embodiments 1-2 and comparative examples 1-3 were designed, as shown below:

[0040] Example 1

[0041] like Figure 1 , 2 As shown in Figures 4 and 5, a tear-resistant and deformation-resistant cashmere blended fabric comprises an inner layer 1, a tear-resistant layer 2, and a surface layer 3 arranged in sequence;

[0042] The tear-resistant layer 2 comprises a support layer 1 21 and a support layer 2 22 which are arranged on opposite sides of the surface layer 3 and the inner layer 1 in correspondence with each other, and the support layer 1 21 and the support layer 2 22 are alternately provided with concave sections and hot-pressed convex sections, and the concave sections and hot-pressed convex sections on the support layer 1 21 and the support layer 2 22 are symmetrically arranged with each other, and a placement cavity 23 is formed between the concave sections of the support layer 1 21 and the support layer 2 22, and an anti-tear member 25 is arranged between two adjacent placement cavities 23;

[0043] The tear-resistant member 25 includes a pressing portion 251 and two winding portions 252 respectively located on both sides of the pressing portion 251 and connected to the pressing portion 251. The pressing portion 251 is fixed together with the hot pressing raised section between two adjacent placement cavities 23 by hot pressing.

[0044] A limiting member 24 for limiting the position of the anti-tearing member 25 is disposed on the inner side of the placement cavity 23 .

[0045] Preferably, the limiting member 24 includes a limiting groove body 241, two pressing sections 242 respectively located on both sides of the limiting groove body 241 and connected to the limiting groove body 241, the winding portion 252 is hot-pressed and fixed on the limiting groove body 241, and the pressing section 242 is located between the hot-pressed raised sections of the support layer 1 21 and the support layer 2 22 and is hot-pressed and fixed together with the winding portion 252 and the hot-pressed raised sections of the support layer 1 21 and the support layer 2 22;

[0046] The two winding parts 252 of the tear-resistant member 25 have opposite winding opening directions, and the limiting members 24 between two adjacent limiting members 24 are arranged alternately up and down.

[0047] Preferably, a connecting piece 26 is provided between the hot-pressed raised sections on the support layer 1 21 and the support layer 2 22 between two adjacent tear-resistant members 25 .

[0048] Preferably, the supporting layer 1 21, the supporting layer 2 22, the limiting member 24, the anti-tear member 25, and the connecting piece 26 are all made of polyamide material or polypropylene material.

[0049] A method for preparing tear-resistant and deformation-resistant cashmere blended fabric, the specific steps are as follows:

[0050] Step 1: Extruding a support layer 1 21 and a support layer 2 2 on the surface of the surface layer 3 and the inner layer 1 through a mold, respectively, and extruding a limiting member 24 in one of two adjacent concave sections of the support layer 1 21 or the support layer 2 22 through a mold;

[0051] Step 2: Under room temperature (23°C ± 2°C), the tear-resistant member 25 is wound at both ends to form winding portions 252 , respectively, with a pressing portion 251 left between the two winding portions 252 ;

[0052] Step three: place the inner layer 1 and the surface layer 3 symmetrically up and down, so that the support layer 2 22 and the support layer 1 21 on the inner layer 1 and the surface layer 3 correspond to each other, that is, the hot-pressed raised sections and recessed sections of the support layer 1 21 and the support layer 2 22 correspond to each other, respectively, and a placement cavity 23 is formed between the recessed sections of the support layer 1 21 and the support layer 2 22, and the anti-tear member 25 is placed on the limiter 24 between two adjacent placement cavities 23 and heated and bonded with the limiter 24, and the heating temperature is 65±3°C, and the connecting piece 26 is placed between the hot-pressed raised sections between two adjacent anti-tear members 25, and the hot-pressed raised sections of the inner layer 1, the surface layer 3, the support layer 1 21 and the support layer 2 22, and the correspondingly placed pressing parts 251, the limiter 24 and the connecting piece 26 are subjected to hot-pressing treatment to obtain a tear-resistant and deformation-resistant cashmere blended fabric;

[0053] It should be noted that in step three, the hot pressing treatment temperature is 185±3°C, the hot pressing pressure is 6 MPa, the number of hot pressing times is 5 times, and the hot pressing time for each time is 6 minutes.

[0054] Example 2

[0055] like Figure 1 and 3 -6, a tear-resistant and deformation-resistant cashmere blended fabric, based on Example 1, this embodiment is further improved, specifically, a pressing member 27 for pressing the winding portion 252 toward the limiting member 24 is further provided inside the placement cavity 23;

[0056] The pressing member 27 includes a pressing portion 271 and two connecting sections 272 located at both sides of the pressing portion 271 and connected to the pressing portion 271 . The connecting sections 272 are folded and fixed to the inner side surface of the placement cavity 23 by heat pressing.

[0057] In this embodiment, the supporting layer 1 21 , the supporting layer 2 22 , the limiting member 24 , the anti-tear member 25 , the connecting piece 26 , and the pressing member 27 are all made of polyamide material or polypropylene material.

[0058] A method for preparing tear-resistant and deformation-resistant cashmere blended fabric, the specific steps are as follows:

[0059] Step 1: Extruding a support layer 1 21 and a support layer 2 22 on the surface of the surface layer 3 and the inner layer 1 respectively by means of a mold, extruding a limiter 24 in one of two adjacent concave sections of the support layer 1 21 or the support layer 2 22 by means of a mold, and extruding a pressing member 27 in the concave section of the support layer 1 21 or the support layer 2 22 where the limiter 24 is not provided by means of a mold;

[0060] Step 2: Under room temperature (23°C ± 2°C), the tear-resistant member 25 is wound at both ends to form winding portions 252 , respectively, with a pressing portion 251 left between the two winding portions 252 ;

[0061] Step three: place the inner layer 1 and the surface layer 3 symmetrically up and down, so that the support layer 2 22 and the support layer 1 21 on the inner layer 1 and the surface layer 3 correspond to each other, that is, the hot-pressed raised sections and recessed sections of the support layer 1 21 and the support layer 2 22 correspond to each other, respectively, and a placement cavity 23 is formed between the recessed sections of the support layer 1 21 and the support layer 2 22, and the anti-tear component 25 is placed on the limiting component 24 between two adjacent placement cavities 23 and is heated and bonded with the limiting component 24, and the heating temperature is 65±3°C, and the connecting piece 26 is placed between the hot-pressed raised sections between two adjacent anti-tear components 25, and the hot-pressed raised sections of the inner layer 1, the surface layer 3, the support layer 1 21 and the support layer 2 22 and the correspondingly placed pressing parts 251, the limiting component 24 and the connecting piece 26 are subjected to hot-pressing treatment, and then the pressing component 27 and the inner side surface of the placement cavity 23 are subjected to hot-pressing treatment to obtain a tear-resistant and deformation-resistant cashmere blended fabric;

[0062] It should be noted that, in this embodiment, the process parameters for hot pressing the hot pressed raised sections of the inner layer 1, the surface layer 3, the support layer 1 21 and the support layer 2 2, and the correspondingly placed pressing parts 251, the stopper 24 and the connecting piece 26 are consistent with those in Embodiment 1;

[0063] The pressing member 27 and the inner side surface of the placement cavity 23 are subjected to hot pressing at a temperature of 126±3° C., a hot pressing pressure of 3 MPa, two hot pressing times, and a hot pressing time of 4 minutes each time.

[0064] Comparative Example 1

[0065] A tear-resistant and deformation-resistant cashmere blended fabric. In this comparative example, the difference from Example 2 is that the tear-resistant and deformation-resistant cashmere blended fabric in this comparative example does not have a structure of a limiter 24, which is as follows:

[0066] The fabric comprises an inner layer 1, a tear-resistant layer 2, and a surface layer 3 which are arranged in sequence;

[0067] The tear-resistant layer 2 comprises a support layer 1 21 and a support layer 2 22 which are arranged on opposite sides of the surface layer 3 and the inner layer 1 in correspondence with each other, and the support layer 1 21 and the support layer 2 22 are alternately provided with concave sections and hot-pressed convex sections, and the concave sections and hot-pressed convex sections on the support layer 1 21 and the support layer 2 22 are symmetrically arranged with each other, and a placement cavity 23 is formed between the concave sections of the support layer 1 21 and the support layer 2 22, and an anti-tear member 25 is arranged between two adjacent placement cavities 23;

[0068] The tear-resistant member 25 includes a pressing portion 251 and two winding portions 252 respectively located on both sides of the pressing portion 251 and connected to the pressing portion 251 . The pressing portion 251 is fixed together with a hot-pressed raised section between two adjacent placement cavities 23 by hot-pressing.

[0069] In this comparative example, the two winding portions 252 of the tear-resistant member 25 have opposite winding opening directions.

[0070] In this comparative example, a pressing member 27 for pressing the winding portion 252 is further provided inside the placement cavity 23;

[0071] The pressing member 27 includes a pressing portion 271 and two connecting sections 272 located at both sides of the pressing portion 271 and connected to the pressing portion 271 . The connecting sections 272 are folded and fixed to the inner side surface of the placement cavity 23 by heat pressing.

[0072] In this comparative example, connecting pieces 26 are provided between the hot-pressed raised sections on the support layer 1 21 and the support layer 2 22 between two adjacent tear-resistant members 25 .

[0073] In this comparative example, the support layer 1 21, the support layer 2 22, the tear-resistant member 25, the connecting piece 26, and the pressing member 27 are all made of polyamide material or polypropylene material.

[0074] A method for preparing tear-resistant and deformation-resistant cashmere blended fabric, the specific steps are as follows:

[0075] Step 1: Extruding a support layer 1 21 and a support layer 2 22 on the surface of the surface layer 3 and the inner layer 1 through a mold, respectively, and extruding a pressing member 27 in one of two adjacent concave sections of the support layer 1 21 or the support layer 2 22 through a mold;

[0076] Step 2: Under room temperature (23°C ± 2°C), the tear-resistant member 25 is wound at both ends to form winding portions 252 , respectively, with a pressing portion 251 left between the two winding portions 252 ;

[0077] Step three: place the inner layer 1 and the surface layer 3 symmetrically up and down, so that the support layer 2 22 and the support layer 1 21 on the inner layer 1 and the surface layer 3 correspond to each other, that is, the hot-pressed raised sections and recessed sections of the support layer 1 21 and the support layer 2 22 correspond to each other, and a placement cavity 23 is formed between the recessed sections of the support layer 1 21 and the support layer 2 22, and the anti-tear component 25 is placed on the pressing component 27 between the two adjacent placement cavities 23 and heated and bonded with the pressing component 27, and the heating temperature is 60-70°C, and the connecting piece 26 is placed between the hot-pressed raised sections between the two adjacent anti-tear components 25, and the hot-pressed raised sections of the inner layer 1, the surface layer 3, the support layer 1 21 and the support layer 2 22, and the correspondingly placed pressing parts 251 and the connecting piece 26 are hot-pressed, and then the pressing component 27 and the inner side surface of the placement cavity 23 are hot-pressed to obtain a tear-resistant and deformation-resistant cashmere blended fabric.

[0078] The rest are consistent with Example 2.

[0079] Comparative Example 2

[0080] A tear-resistant and deformation-resistant cashmere blended fabric. In this comparative example, the difference from Example 2 is that the tear-resistant and deformation-resistant cashmere blended fabric in this comparative example does not have the structure of the limiting member 24 and the pressing member 27, which is as follows:

[0081] The fabric comprises an inner layer 1, a tear-resistant layer 2, and a surface layer 3 which are arranged in sequence;

[0082] The tear-resistant layer 2 comprises a support layer 1 21 and a support layer 2 22 which are arranged on opposite sides of the surface layer 3 and the inner layer 1 in correspondence with each other, and the support layer 1 21 and the support layer 2 22 are alternately provided with concave sections and hot-pressed convex sections, and the concave sections and hot-pressed convex sections on the support layer 1 21 and the support layer 2 22 are symmetrically arranged with each other, and a placement cavity 23 is formed between the concave sections of the support layer 1 21 and the support layer 2 22, and an anti-tear member 25 is arranged between two adjacent placement cavities 23;

[0083] The tear-resistant member 25 includes a pressing portion 251 and two winding portions 252 respectively located on both sides of the pressing portion 251 and connected to the pressing portion 251 . The pressing portion 251 is fixed together with a hot-pressed raised section between two adjacent placement cavities 23 by hot-pressing.

[0084] In this comparative example, the two winding portions 252 of the tear-resistant member 25 have opposite winding opening directions.

[0085] In this comparative example, connecting pieces 26 are provided between the hot-pressed raised sections on the support layer 1 21 and the support layer 2 22 between two adjacent tear-resistant members 25 .

[0086] In this comparative example, the support layer 1 21, the support layer 2 22, the tear-resistant member 25, and the connecting piece 26 are all made of polyamide material or polypropylene material.

[0087] A method for preparing tear-resistant and deformation-resistant cashmere blended fabric, the specific steps are as follows:

[0088] Step 1: Extruding a support layer 1 21 and a support layer 2 22 on the surface of the surface layer 3 and the inner layer 1 through a mold;

[0089] Step 2: Under room temperature (23°C ± 2°C), the tear-resistant member 25 is wound at both ends to form winding portions 252 , respectively, with a pressing portion 251 left between the two winding portions 252 ;

[0090] Step three: place the inner layer 1 and the surface layer 3 symmetrically up and down, so that the support layer 2 22 and the support layer 1 21 on the inner layer 1 and the surface layer 3 correspond to each other, that is, the hot-pressed raised sections and recessed sections of the support layer 1 21 and the support layer 2 22 correspond to each other, and a placement cavity 23 is formed between the recessed sections of the support layer 1 21 and the support layer 2 22, and the anti-tear component 25 is placed between two adjacent placement cavities 23, and the connecting piece 26 is placed between the hot-pressed raised sections between two adjacent anti-tear components 25. After hot-pressing the hot-pressed raised sections of the inner layer 1, the surface layer 3, the support layer 1 21 and the support layer 2 22, and the correspondingly placed pressing parts 251 and the connecting piece 26, a tear-resistant and deformation-resistant cashmere blended fabric can be obtained.

[0091] The rest are consistent with Example 2.

[0092] Comparative Example 3

[0093] A tear-resistant and deformation-resistant cashmere blended fabric. In this comparative example, the difference from Example 2 is that the tear-resistant and deformation-resistant cashmere blended fabric in this comparative example does not have the structure of the limiter 24 and the pressure member 27, and the tear-resistant member 25 is in a straight state, as follows:

[0094] The fabric comprises an inner layer 1, a tear-resistant layer 2, and a surface layer 3 which are arranged in sequence;

[0095] The tear-resistant layer 2 comprises a support layer 1 21 and a support layer 2 22 which are arranged on opposite sides of the surface layer 3 and the inner layer 1 in correspondence with each other, and the support layer 1 21 and the support layer 2 22 are alternately provided with concave sections and hot-pressed convex sections, and the concave sections and hot-pressed convex sections on the support layer 1 21 and the support layer 2 22 are symmetrically arranged with each other, and a placement cavity 23 is formed between the concave sections of the support layer 1 21 and the support layer 2 22, and an anti-tear member 25 is arranged between two adjacent placement cavities 23;

[0096] The tear-resistant member 25 is in a straight state, and the tear-resistant member 25 in a straight state is fixed together with the hot-pressed raised section between two adjacent placement cavities 23 by hot pressing.

[0097] In this comparative example, connecting pieces 26 are provided between the hot-pressed raised sections on the support layer 1 21 and the support layer 2 22 between two adjacent tear-resistant members 25 .

[0098] In this comparative example, the support layer 1 21, the support layer 2 22, the tear-resistant member 25, and the connecting piece 26 are all made of polyamide material or polypropylene material.

[0099] A method for preparing tear-resistant and deformation-resistant cashmere blended fabric, the specific steps are as follows:

[0100] Step 1: Extruding a support layer 1 21 and a support layer 2 22 on the surface of the surface layer 3 and the inner layer 1 through a mold;

[0101] Step 2: Place the inner layer 1 and the surface layer 3 symmetrically up and down, so that the support layer 2 22 and the support layer 1 21 on the inner layer 1 and the surface layer 3 correspond to each other, that is, the hot-pressed raised sections and recessed sections of the support layer 1 21 and the support layer 2 22 correspond to each other, and a placement cavity 23 is formed between the recessed sections of the support layer 1 21 and the support layer 2 22, and the flat anti-tear piece 25 is placed between two adjacent placement cavities 23, and the connecting piece 26 is placed between the hot-pressed raised sections between two adjacent anti-tear pieces 25. After hot-pressing the hot-pressed raised sections of the inner layer 1, the surface layer 3, the support layer 1 21 and the support layer 2 22, and the correspondingly placed anti-tear pieces 25 and the connecting piece 26, a tear-resistant and deformation-resistant cashmere blended fabric can be obtained.

[0102] The rest are consistent with Example 2.

[0103] 3. Performance Test Experiment

[0104] The anti-deformation performance test sample fabrics are specifically unwashed tear-resistant and anti-deformation cashmere blended fabrics and tear-resistant and anti-deformation cashmere blended fabrics washed 30 times (washed 30 times in a drum washing machine with a rotation speed of 1200r / min, and each washing time is 20min);

[0105] Anti-deformation performance test: LLY-06BD electronic fiber strength tester was used for testing, with a tensile speed of 20mm / min, a dry pre-tension of 0.10cN, a wet pre-tension of 0.04cN, a clamping distance of 20mm, and a fabric sample size of 150×90mm in strips (the elastic recovery rate was tested using a 5% fixed elongation test). The dry state was measured 50 times, and the average value was calculated to obtain the strength and elongation properties and elastic recovery of the fabric.

[0106] Table 1 Anti-deformation performance test data record table

[0107]

[0108] Experimental conclusion: It can be seen from the data in Table 1 that the fabrics of Example 1 and Example 2 both have good anti-deformation effects, among which the anti-deformation effect of Example 2 is better;

[0109] By comparing Example 2 with Comparative Examples 1-3, it can be learned that the difference between Comparative Example 1 and Example 2 is that Comparative Example 1 does not have the structure of the limiting member 24; the difference between Comparative Example 2 and Example 2 is that Comparative Example 2 does not have the structure of the limiting member 24 and the pressure member 27; the difference between Comparative Example 3 and Example 2 is that Comparative Example 3 does not have the structure of the limiting member 24 and the pressure member 27, and the anti-tear member 25 is in a straight state; compared with Example 2, it is found that the breaking strength and elastic recovery rate of the fabrics of Comparative Examples 1-3 both show a downward trend, which shows that the structural design of the limiting member 24, the pressure member 27, the pressing part 251 and the winding part 252 can be used in combination to improve the anti-deformation effect of the fabric, among which the lifting effect of the limiting member 24 is more significant.

[0110] Tear resistance test: Experimental equipment: Q800 dynamic mechanical analyzer (DMA, TA Instruments, Inc., USA). Experimental method: take the durable antibacterial and deodorant down jacket fabrics of the above-mentioned Examples 1-3 and Comparative Examples 1-2 as samples. The sample specifications are 180×120 mm long strips. The samples are placed in a stretching fixture, one end is fixed, and the other end can move with the fixture. The temperature is 22°C±3°C, the frequency is set to 2Hz, and the applied stress is gradually increased from 0 at a speed of 3MPa / s. The strain change of the sample is recorded until the sample breaks, and the stress at the breaking point is taken as the tensile strength of the sample.

[0111] Among them, the tear resistance test sample fabric is specifically an unwashed long-lasting antibacterial and deodorizing down jacket fabric; a long-lasting antibacterial and deodorizing down jacket fabric washed 40 times (washed 40 times in a drum washing machine with a rotation speed of 1200r / min, and each washing time is 21min).

[0112] Table 2 Tear resistance test data record

[0113]

[0114] Experimental conclusion: Analysis of the data in Table 2 shows that the tear resistance of the fabric in Example 2 is the best, and Example 2 is the best embodiment. By comparing Example 2 with Comparative Examples 1-3, it is found that the structural designs of the limiting member 24, the pressing member 27, the pressing portion 251 and the winding portion 252 are all used in combination to improve the tear resistance of the fabric, among which the improvement effect of the limiting member 24 is more significant.

[0115] Anti-down performance test: According to the national standard GB / T12705.2-2009 "Test method for anti-down leakage of textile fabrics Part 2: Transfer box method", the anti-down drilling performance of the fabric is tested. When the number of down drilling roots of the fabric is greater than 15, the anti-down drilling performance is poor; when the number of down drilling roots is 5<≤15, it has anti-down drilling performance; when the number of down drilling roots is ≤5, it has good anti-down drilling performance.

[0116] The anti-down performance test sample fabrics of the following embodiments 1-2 and comparative examples 1-3 are all subjected to hot pressing treatment to heat-press and lock the inner layer 1, the tear-resistant layer 2, and the surface layer 3 (the hot pressing treatment temperature is 128℃±2℃, the hot pressing pressure is 3MPa, the number of hot pressing times is 4 times, and the hot pressing time each time is 6min) to keep the front and rear ends of the placement cavity 23 in a sealed state.

[0117] Among them, the sample fabrics for the anti-down drilling performance test are specifically unwashed tear-resistant and anti-deformation cashmere blended fabrics; tear-resistant and anti-deformation cashmere blended fabrics washed 35 times (washed 35 times in a drum washing machine with a speed of 1200r / min, and each washing time is 28min); tear-resistant and anti-deformation cashmere blended fabrics washed 50 times (washed 50 times in a drum washing machine with a speed of 1200r / min, and each washing time is 28min).

[0118] Table 3 Anti-drilling performance test data record table

[0119]

[0120] Experimental conclusion: Analysis of the data in Table 3 shows that the anti-down drilling effect of the fabrics of Example 1 and Example 2 is good, and by comparing Example 2 with Comparative Examples 1-3, it can be seen that the structural design of the limiting member 24, the pressing part 251 and the winding part 252 can significantly improve the anti-down drilling effect of the fabric.

[0121] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A tear-resistant and deformation-resistant cashmere blended fabric, characterized in that: It comprises an inner layer (1), a tear-resistant layer (2), and a surface layer (3) which are arranged in sequence; The tear-resistant layer (2) comprises a support layer 1 (21) and a support layer 2 (22) which are arranged on opposite sides of the surface layer (3) and the inner layer (1) in correspondence with each other, and the support layer 1 (21) and the support layer 2 (22) are both alternately provided with concave sections and hot-pressed convex sections, and the concave sections and hot-pressed convex sections on the support layer 1 (21) and the support layer 2 (22) are respectively symmetrically arranged with each other, and a placement cavity (23) is formed between the concave sections of the support layer 1 (21) and the support layer 2 (22), and an anti-tear component (25) is arranged between two adjacent placement cavities (23); The tear-resistant member (25) comprises a pressing portion (251), and two winding portions (252) respectively located on both sides of the pressing portion (251) and connected to the pressing portion (251); the pressing portion (251) is fixed together with the hot-pressed raised section between two adjacent placement cavities (23) by hot pressing; A limiting piece (24) for limiting the position of the tear-resistant piece (25) is provided on the inner side of the placement cavity (23).

2. The tear-resistant and deformation-resistant cashmere blended fabric according to claim 1, characterized in that: The limiting member (24) comprises a limiting groove body (241), two pressing sections (242) respectively located on both sides of the limiting groove body (241) and connected to the limiting groove body (241), the winding portion (252) is fixed on the limiting groove body (241) by hot pressing, and the pressing section (242) is located between the hot pressing raised sections of the support layer 1 (21) and the support layer 2 (22) and is fixed together with the winding portion (252) and the hot pressing raised sections of the support layer 1 (21) and the support layer 2 (22) by hot pressing; The two winding portions (252) of the tear-resistant member (25) have opposite winding opening directions, and the limiting members (24) between two adjacent limiting members (24) are arranged in an upper and lower alternating manner.

3. The tear-resistant and deformation-resistant cashmere blended fabric according to claim 2, characterized in that: A pressing member (27) for pressing the winding portion (252) toward the limiting member (24) is also provided inside the placement cavity (23); The pressing member (27) comprises a pressing portion (271), two connecting sections (272) respectively located on both sides of the pressing portion (271) and connected to the pressing portion (271), wherein the connecting sections (272) are folded back and fixed to the inner side surface of the placement cavity (23) by heat pressing.

4. The tear-resistant and deformation-resistant cashmere blended fabric according to any one of claims 1 to 3, characterized in that: Connecting sheets (26) are provided between the hot-pressed raised sections on the support layer 1 (21) and the support layer 2 (22) between two adjacent tear-resistant parts (25).

5. The tear-resistant and deformation-resistant cashmere blended fabric according to any one of claim 4, characterized in that: The supporting layer 1 (21), the supporting layer 2 (22), the limiting member (24), the tear-resistant member (25), the connecting piece (26), and the pressing member (27) are all made of polyamide material or polypropylene material.

6. A method for preparing the tear-resistant and deformation-resistant cashmere blended fabric as described in any one of 1-5, characterized in that: The specific steps are as follows: Step 1: Extruding a support layer 1 (21) and a support layer 2 (22) on the surface of the surface layer (3) and the inner layer (1) respectively by means of a mold, and extruding a limiter (24) in one of two adjacent recessed sections of the support layer 1 (21) or the support layer 2 (22) by means of a mold; Step 2: Winding the tear-resistant member (25) at both ends at room temperature to form winding portions (252), respectively, with a pressing portion (251) being left between the two winding portions (252); Step 3: The inner layer (1) and the surface layer (3) are placed symmetrically up and down, so that the support layer 2 (22) and the support layer 1 (21) on the inner layer (1) and the surface layer (3) correspond to each other, that is, the hot-pressed convex sections and concave sections of the support layer 1 (21) and the support layer 2 (22) correspond to each other, respectively, and a placement cavity (23) is formed between the concave sections of the support layer 1 (21) and the support layer 2 (22), and the tear-resistant member (25) is placed as a limiter between two adjacent placement cavities (23) (24) and heat-bonded with the limiting member (24) at a heating temperature of 60-70°C, placing the connecting piece (26) between the hot-pressed raised sections between two adjacent tear-resistant members (25), and subjecting the inner layer (1), the surface layer (3), the hot-pressed raised sections of the supporting layer one (21) and the supporting layer two (22) and the correspondingly placed pressing parts (251), the limiting member (24) and the connecting piece (26) to a hot-pressing treatment to obtain a tear-resistant and deformation-resistant cashmere blended fabric.

7. The method for preparing a tear-resistant and deformation-resistant cashmere blended fabric according to claim 6, characterized in that: In step one, a pressing piece (27) is extruded in a recessed section of support layer one (21) or support layer two (22) where no limiting piece (24) is provided by means of a mold; in step three, after the hot-pressed raised sections of the inner layer (1), the surface layer (3), the support layer one (21) and the support layer two (22) and the correspondingly placed pressing parts (251), the limiting piece (24) and the connecting piece (26) are subjected to hot-pressing treatment, the pressing piece (27) and the inner side surface of the placement cavity (23) are subjected to hot-pressing treatment to obtain a tear-resistant and deformation-resistant cashmere blended fabric, wherein the hot-pressing treatment temperature is 120-130° C., the hot-pressing pressure is 2-4 MPa, the number of hot-pressing times is 1-3 times, and the hot-pressing time for each time is 3-5 minutes.

8. The method for preparing a tear-resistant and deformation-resistant cashmere blended fabric according to claim 6, characterized in that: In step three, the hot pressing treatment temperature is 180-190° C., the hot pressing pressure is 5-7 MPa, the number of hot pressing times is 4-7 times, and the hot pressing time for each time is 4-7 minutes.

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