A multi-layer knitted fabric with a lasting cool feeling and a method for manufacturing the same

Abstract

The present application relates to a kind of multilayer knitted fabric with lasting cool feeling and its preparation method, and the knitted fabric includes three-layer structure from top to bottom in turn: upper surface layer, connecting layer and lower surface layer, upper surface layer is formed by the continuous knitting mode of yarn a and yarn b in each course alternately spaced loop, connecting layer is formed by the alternate tuck knitting of yarn b between upper surface layer and lower surface layer, lower surface layer is formed by the continuous knitting mode of yarn a and yarn b in each course alternately spaced loop, the porosity between the yarn of upper surface layer is lower than the porosity between the yarn of lower surface layer, the yarn tension of yarn a of upper surface layer, lower surface layer is all less than the yarn tension of yarn b, and the loop height formed by yarn a is higher than the loop height formed by yarn b.The present application is simple, easy to operate, and the multilayer knitted fabric formed by knitting has good contact instantaneous cool feeling, no stuffy feeling, sweat evaporation heat dissipation speed is fast, and the effect of moisture absorption and moisture transfer is good.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of textile fabrics, and particularly relates to a preparation method of a multi-layer knitted fabric with sustained cool feeling. BACKGROUND

[0002] In summer, the application demand of fabric textiles with cool feeling is large.

[0003] At present, the existing cool textile mainly adds mica, jade and other high-thermal-conductivity substances into the spinning solution before spinning or changes the cross-sectional shape of the spinning nozzle during spinning to obtain high-thermal-conductivity or special-shaped cross-section fibers, so as to prepare cool textiles.

[0004] With the continuous development of textile technology, fibers with cool feeling gradually rise in the cool fabric market, and a new type of intrinsic cool fiber, ultra-high molecular weight polyethylene fiber, is increasingly widely used in the development and application of cool fabrics due to its excellent thermal conductivity. The patent with the application number 202320898795.7 discloses an ultra-high molecular weight temperature fabric, which uses 100% ultra-high molecular weight polyethylene fiber as the upper layer of the fabric, uses composite clothing sewing thread as the middle layer of the fabric, and uses a mixture of polyester low-elasticity silk and spandex silk as the lower layer of the fabric. The prepared fabric has good cool feeling, air permeability, anti-pilling and other properties. However, the ultra-high molecular weight polyethylene fiber is not water-absorbing, and sweat is difficult to be conducted out, so that the cool feeling of the fabric is not lasting and a stuffy feeling is easily generated. SUMMARY

[0005] The application provides a preparation method of a multi-layer knitted fabric with sustained cool feeling to solve the problems of complex process, non-lasting cool feeling and poor moisture absorption and moisture conduction of the existing cool fabric, so that the fabric has good instant cool feeling and also has the characteristics of sustained cool feeling, moisture absorption and moisture conduction.

[0006] The application adopts a technical scheme of a multi-layer knitted fabric with sustained cool feeling, which comprises a three-layer structure from top to bottom, namely an upper surface layer, a connecting layer and a lower surface layer. The upper surface layer is formed by continuously knitting yarn a and yarn b alternately and interval in each course. The connecting layer is formed by alternately and piling knitting yarn b in the upper surface layer and the lower surface layer. The lower surface layer is formed by continuously knitting yarn a and yarn b alternately and interval in each course. The porosity between the yarns in the lower surface layer is higher than the porosity between the yarns in the upper surface layer. The yarn feeding tension of yarn a in the upper surface layer and the lower surface layer is smaller than the yarn feeding tension of yarn b. The loop height formed by yarn a is higher than the loop height formed by yarn b.

[0007] Further, each vertical column in the upper surface layer contains 1-3 adjacent loops with the same height.

[0008] Further, the yarn a is a cool fiber yarn with high thermal conductivity and hydrophobicity.

[0009] Further, the yarn b is a profiled cross-section fiber yarn with moisture absorption and rapid moisture removal performance.

[0010] Further, the number of loops formed by the yarn a and the yarn b in the upper layer is 1:1, and the number of loops formed by the yarn a and the yarn b in the lower layer is 2:1.

[0011] A preparation method of a multi-layer knitted fabric with sustained coolness, using yarn a and yarn b as raw materials, and using a double-sided circular knitting machine to weave a multi-layer knitted fabric with an upper layer, a connecting layer and a lower layer, the yarn a has a smaller yarn feeding tension than the yarn b when weaving the upper layer and the lower layer, so that the loops formed by the yarn a are higher than the loops formed by the yarn b.

[0012] The advantages of the present application are as follows:

[0013] (1) In the multi-layer knitted fabric of the present application, two different yarns form loops with height differences due to different yarn feeding tensions, the yarn a has a small yarn feeding tension and forms loops with a large height, and the yarn b has a large yarn feeding tension and forms loops with a small height, in addition, the yarn b will push up the loops formed by the adjacent yarn a due to the large tension, so that the height of the loops formed by the yarn a is more obvious. In the present application, two yarns are used, one with a small tension and the other with a large tension, and in the ordinary knitted fabric, one yarn is used with the same thickness, the horizontal height difference formed by one yarn through looping and purling is n (n is a constant, unit: mm), and the horizontal height difference of the loops formed by the two yarns in the present application is about 2n. The larger horizontal height difference can make the fabric present a point-like contact with the skin at the protruding part, producing a momentary cool feeling, and without feeling stuffy, at the same time, the larger horizontal height difference also makes the other moisture-absorbing yarn with small loop height not directly contact the skin, so that the skin does not feel wet.

[0014] (2) The multi-layer knitted fabric of the present application uses cool fiber yarn and profiled cross-section fiber yarn, the cool fiber yarn forms loops with a relatively large height, and the profiled cross-section fiber yarn forms loops with a relatively small height, the alternation of the hydrophobic cool fiber yarn and the moisture-absorbing and sweat-wicking profiled cross-section fiber yarn makes the fabric have excellent coolness and dryness when used.

[0015] (3) The upper layer of the multi-layer knitted fabric prepared by the present application is in contact with the human body, the upper layer with low porosity can quickly absorb the sweat on the surface of the skin, conduct the sweat to the lower layer with high porosity through the connecting layer, and accelerate the evaporation and heat dissipation speed of the sweat; the high loop structure in the lower layer can keep the bottom of the fabric dry, and to some extent, can avoid the breeding of bacteria.

[0016] (4) The preparation process is simple and the steps are easy to operate. The cool fiber does not need to be improved by physical or chemical methods, and the fabric does not need to be cooled by adding a cool auxiliary agent. The fabric has a lasting cooling effect and can be better applied to summer household textiles such as seat cushions and mattress. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the multi-layer knitted fabric with persistent cooling effect of the application.

[0018] Figure 2 It is an effect diagram of each layer structure of the multi-layer knitted fabric with persistent cooling effect of Example 1.

[0019] Figure 3 It is a knitting process diagram of the multi-layer knitted fabric with persistent cooling effect of Example 1.

[0020] Figure 4 It is an effect diagram of each layer structure of the multi-layer knitted fabric with persistent cooling effect of Example 2.

[0021] Figure 5 It is a knitting process diagram of the multi-layer knitted fabric with persistent cooling effect of Example 2.

[0022] BRIEF DESCRIPTION OF DRAWINGS: 1 upper surface layer; 2 connecting layer; 3 lower surface layer; 4 human skin; 5 sweat; 6 loops formed by yarn a; 7 loops formed by yarn b; 11 protruding part of the upper surface layer; 12 recessed part of the upper surface layer; 31 protruding part of the lower surface layer; 32 recessed part of the lower surface layer. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned purposes, features and advantages of the application more obvious and easy to understand, the specific embodiments of the application will be further described below. Example 1

[0024] A multi-layer knitted fabric with persistent cooling effect is prepared by knitting on a double-sided circular knitting machine.

[0025] As shown in Figure 1 The fabric includes three layers of structure, from top to bottom, the upper surface layer 1, the connecting layer 2, and the lower surface layer 3. The upper surface layer 1 is the fabric layer directly contacting the human skin 4.

[0026] As shown in Figure 2As shown in the drawings, the upper layer 1 is formed by two yarns a and b in the form of continuous knitting with alternating and spaced loops, the loops formed by the yarn a and the loops formed by the yarn b are spaced in each course of the upper layer, the number of the loops 6 formed by the yarn a and the loops 7 formed by the yarn b is 1:1; the connecting layer 2 is formed by the yarn b in the form of continuous knitting with tuck stitches, which serves to connect the upper layer 1 and the lower layer 3; the lower layer 3 is formed by two yarns a and b in the form of continuous knitting with alternating and spaced loops, the loops formed by the yarn a and the loops formed by the yarn b are spaced in each course of the lower layer, the number of the loops 6 formed by the yarn a and the loops 7 formed by the yarn b is 2:1.

[0027] As shown in the drawings, Figure 2 In a minimum unit of the upper layer of the fabric, each loop 6 formed by the yarn a is surrounded by a loop 7 formed by the yarn b, and each loop 7 formed by the yarn b is surrounded by a loop 6 formed by the yarn a, that is, in a vertical column, the loops formed by the yarn a and the loops 7 formed by the yarn b are alternating.

[0028] Specifically, in the first course, the loops 6 formed by the yarn a and the loops 7 formed by the yarn b are spaced, in the second course, the loops 7 formed by the yarn b are arranged at the positions corresponding to the loops 6 formed by the yarn a in the first course, and the loops 6 formed by the yarn a are arranged at the positions corresponding to the loops 7 formed by the yarn b in the first course, in the third course, the loop positions are the same as those in the first course, and in the fourth course, the loop positions are the same as those in the second course.

[0029] In a minimum unit of the lower layer of the fabric, two loops 6 formed by the yarn a are surrounded by a loop 7 formed by the yarn b, specifically, the positions of the loops 6 formed by the yarn a in the first course and the second course of adjacent courses are the same, the loops 7 formed by the yarn b are interposed between the loops 6 formed by the yarn a, the positions of the loops 6 formed by the yarn a in the third course and the fourth course correspond to the positions of the loops 7 formed by the yarn b in the first course and the second course, the positions of the loops 7 formed by the yarn b in the third course and the fourth course correspond to the positions of the loops 6 formed by the yarn a in the first course and the second course, and the positions of the loops 6 formed by the yarn a in the third course and the fourth course are the same.

[0030] The knitting process chart is shown in the drawings. Figure 3

[0031] The first and second routes are respectively formed by the yarn a and the yarn b in the front needle bed to form alternating and spaced loops, the third and fourth routes are respectively formed by the yarn b and the yarn a in the back needle bed to form alternating and spaced loops, and the fifth route is formed by the yarn b in the front and back needle beds to form one tuck stitch for every one loop, and the five routes form one loop course.

[0032] ​The 6th and 7th routes are respectively formed by the yarn a and the yarn b on the front needle bed in an alternate interval stitch, the 1st and 2nd routes are formed by the yarn a and the yarn b on the front needle bed in an alternate interval stitch, the 8th route is formed by the yarn a on the back needle bed in an interval stitch, and the 9th route is formed by the yarn b on the front and back needle beds in a one-in-one tuck stitch, and the four routes form one course of stitches.

[0033] The 10th and 11th routes are respectively formed by the yarn a and the yarn b on the front needle bed in an alternate interval stitch, the 12th and 13th routes are respectively formed by the yarn a and the yarn b on the back needle bed in an alternate interval stitch, and the 14th route is formed by the yarn b on the front and back needle beds in a one-in-one tuck stitch, and the five routes form one course of stitches.

[0034] The 15th and 16th routes are respectively formed by the yarn a and the yarn b on the front needle bed in an alternate interval stitch, the 1st and 2nd routes are formed by the yarn a and the yarn b on the front needle bed in an alternate interval stitch, the 8th route is formed by the yarn a on the back needle bed in an interval stitch, and the 9th route is formed by the yarn b on the front and back needle beds in a one-in-one tuck stitch, and the four routes form one course of stitches.

[0035] The above is one unit cycle.

[0036] When the yarn a and the yarn b are knitted to form the upper layer 1, the yarn a has a smaller threading tension than the yarn b. The upper layer 1 and the lower layer 3 of the multi-layer knitted fabric have an effect of alternating high stitches and low stitches, the protruding part 11 of the upper layer and the protruding part 31 of the lower layer are formed by the stitches 6 of the yarn a, the yarn a has a high stitch height, the recessed part 12 of the upper layer and the recessed part 32 of the lower layer are formed by the stitches 7 of the yarn b, and the yarn b has a stitch height smaller than that of the yarn a. The porosity between the yarns of the upper layer 1 of the multi-layer knitted fabric is lower than the porosity between the yarns of the lower layer 3 of the multi-layer knitted fabric.

[0037] The yarn a is a cool-feeling fiber yarn with high thermal conductivity and hydrophobicity, and the yarn b is a profiled cross-section fiber yarn with good moisture absorption and rapid moisture removal performance. The protruding part 11 of the upper layer 1 of the multi-layer knitted fabric is formed by the cool-feeling fiber yarn, and the yarn is in point contact with the human skin, which has good instant cool feeling and does not produce a stuffy feeling. In addition, the recessed part 12 of the upper layer 1 with low porosity is formed by the profiled cross-section fiber yarn, which can quickly absorb the sweat 5 on the surface of the human skin 4, conduct and diffuse to the recessed part 32 of the lower layer 3 with high porosity through the connecting layer 2, and has good sustained cool feeling while accelerating the evaporation and heat dissipation of the sweat 5. Example 2

[0038] A method for preparing a multi-layer knitted fabric with sustained cool feeling, the fabric is knitted on a double-sided circular knitting machine.

[0039] AsFigure 4 As shown in the drawings, the upper layer 1 is knitted by two kinds of yarns, yarn a and yarn b, and the number of loops 6 formed by yarn a and the number of loops 7 formed by yarn b are in a ratio of 1:1; the connecting layer 2 is knitted by yarn b, which plays a role of connecting the upper layer 1 and the lower layer 3; the lower layer 3 is knitted by two kinds of yarns, yarn a and yarn b, and the number of loops 6 formed by yarn a and the number of loops 7 formed by yarn b are in a ratio of 2:1.

[0040] As shown in the drawings, in a minimum unit of the upper layer of the fabric, every two loops 6 formed by yarn a are surrounded by two loops 7 formed by yarn b, specifically, the positions of the loops 6 formed by yarn a in the first and second adjacent courses are the same as the positions of the loops 7 formed by yarn b, the positions of the loops 6 formed by yarn a in the third course corresponding to the second course are the loops 7 formed by yarn b, the positions of the loops 7 formed by yarn b in the third course corresponding to the second course are the loops 6 formed by yarn a, and the positions of the loops in the fourth course are the same as those in the third course. Figure 4 In a minimum unit of the lower layer of the fabric, every two loops 6 formed by yarn a are surrounded by one loop 7 formed by yarn b, specifically, the positions of the loops 6 formed by yarn a in the first and second adjacent courses are the same, the loops 7 formed by yarn b are interlaced between the loops 6 formed by yarn a, the positions of the loops 6 formed by yarn a in the third and fourth courses corresponding to the first and second courses are the loops 7 formed by yarn b, the positions of the loops 7 formed by yarn b in the third and fourth courses corresponding to the first and second courses are the loops 6 formed by yarn a, and the positions of the loops 6 formed by yarn a in the third and fourth courses are the same.

[0041] The specific knitting process is shown in the drawings as follows:

[0042] Figure 5 The first and second routes are respectively knitted by yarn a and yarn b on the front needle bed in an alternating interval loop formation, the third and fourth routes are respectively knitted by yarn b and yarn a on the back needle bed in an alternating interval loop formation, and the fifth route is knitted by yarn b on the front and back needle beds in a one-in-one tuck loop formation, and the five routes form one loop course;

[0043] The sixth and seventh routes are respectively knitted by yarn a and yarn b on the front needle bed in the same alternating interval loop formation as the first and second routes, the eighth route is knitted by yarn a on the back needle bed in an interval loop formation, and the ninth route is knitted by yarn b on the front and back needle beds in a one-in-one tuck loop formation, and the four routes form one loop course;

[0044] The sixth and seventh routes are respectively knitted by yarn a and yarn b on the front needle bed in the same alternating interval loop formation as the first and second routes, the eighth route is knitted by yarn a on the back needle bed in an interval loop formation, and the ninth route is knitted by yarn b on the front and back needle beds in a one-in-one tuck loop formation, and the four routes form one loop course;

[0045] ​The 10th and 11th routes are alternately and interval looped with the yarn b and the yarn a on the front needle bed, the 12th and 13th routes are alternately and interval looped with the yarn a and the yarn b on the back needle bed, and the 14th route is one-in-one tuck looped with the yarn b on the front and back needle beds, and the five routes form one course of loops;

[0046] The 15th and 16th routes are alternately and interval looped with the yarn b and the yarn a on the front needle bed, which is the same as the 10th and 11th routes, the 17th route is interval looped with the yarn a on the back needle bed, which is staggered with the 8th route, and the 18th route is one-in-one tuck looped with the yarn b on the front and back needle beds, and the four routes form one course of loops.

[0047] The above is one unit cycle.

[0048] The upper surface layer 1 and the lower surface layer 3 of the multi-layer knitted fabric present the high-low loop staggered effect, the convex part 11 of the upper surface layer and the convex part 31 of the lower surface layer are the loops 6 formed by the yarn a, and the concave part 12 of the upper surface layer and the concave part 32 of the lower surface layer are the loops 7 formed by the yarn b.

Claims

1. A multi-layer knitted fabric with a lasting cool feeling, characterized by: The three-layer structure comprises, from top to bottom, an upper surface layer, a connecting layer and a lower surface layer, the upper surface layer is formed by continuous knitting of yarn a and yarn b in each course, the connecting layer is formed by tuck knitting of yarn b between the upper surface layer and the lower surface layer, and the lower surface layer is formed by continuous knitting of yarn a and yarn b in each course, the porosity of the yarn in the lower surface layer is higher than that of the yarn in the upper surface layer, the yarn feeding tension of yarn a in the upper surface layer and the lower surface layer is smaller than that of yarn b, and the loop height of yarn a is higher than that of yarn b, the number ratio of the loops of yarn a to yarn b in the upper surface layer is 1:1, the number ratio of the loops of yarn a to yarn b in the lower surface layer is 2:1, in a smallest unit of the upper surface layer, the loops of yarn a are surrounded by the loops of yarn b, and the loops of yarn b are surrounded by the loops of yarn a, and in a smallest unit of the lower surface layer, the loops of yarn a are surrounded by the loops of yarn b.

2. The multi-layered knitted fabric with a lasting cool feeling according to claim 1, wherein: Each vertical column in the upper surface layer contains 1-3 adjacent loops of the same height.

3. The multi-layered knitted fabric with a lasting cool feeling according to claim 1, wherein: The yarn a is a cooling fiber yarn with high thermal conductivity and hydrophobicity.

4. The multi-layer knitted fabric with a lasting cool feeling according to claim 1, characterized in that: The yarn b is a profiled cross-section fiber yarn with moisture absorption and rapid moisture removal performance.

5. The method of making a multi-layered knitted fabric with a lasting cool feel according to claim 1, wherein: The yarn a and the yarn b are used as raw materials to weave a multi-layer knitted fabric with an upper surface layer, a connecting layer and a lower surface layer by using a double-sided circular knitting machine, the yarn feeding tension of yarn a is smaller than that of yarn b when weaving the upper surface layer and the lower surface layer, so that the loops of yarn a are higher than those of yarn b.

Images