Double knit fabric with one side rough and the other fine

Abstract

To provide a double knitted fabric which is knitted by a double knitting machine and has one side including the front and back surfaces coarse and the other side fine. [Solution] The double knitted fabric has four courses in one cycle, the first and second courses being bottom single courses, the third course being a tucking course, and the fourth course being a top single course. The lower needle disc of the double knitting machine is 28 gauge, and the upper needle disc is 14G thick needle gauge. The surface of the double knitted fabric is perforated using the first and second courses, with the perforation yarn being a 50S / 1 silo-spun acrylic-rayon blend yarn. The back of the double knitted fabric is perforated using the fourth course, with the perforation yarn being a 26S compact-spun pure cotton yarn. Both the surface and back of the double knitted fabric are perforated using the third course. The surface of this double knitted fabric has the coarse, crisp, smooth texture and modern feel of outerwear, while the back has the delicate, comfortable texture and heat-retaining effect of underwear, so that the double knitted fabric simultaneously combines the effects of two different materials.

Description

[Technical Field]

[0001] The present invention relates to the field of textiles, and more particularly to a double knit fabric with one side coarse and the other side fine. [Background technology]

[0002] As apparel designers have increasingly higher requirements for knitted fabrics, double knitted fabrics have begun to be used in the market. Generally, double knitted fabrics have soft texture, moisture absorption and breathability, excellent elasticity, stretchability and productivity.

[0003] There are different knitting methods for single-sided and double-sided knitted fabrics, including close knitting and net knitting. The double layers of net knitted fabrics can be separated, but those knitted with close knitting cannot be separated and only feel thick. Single-sided fabrics are generally called weft-flat weaves, and are similar to double-sided rib (fluff) weaves. Generally, double-knitted fabrics have the same surface on both sides, but in actual use, if the double-knitted fabric is used as outerwear, the back side will not fit snugly against the skin, making it uncomfortable. If the double-knitted fabric is used as innerwear, it will look like underwear, requiring an extra layer of outerwear when going out. Summary of the Invention [Problem to be solved by the invention]

[0004] The present invention aims to solve the above technical problems and provide a double-knitted fabric with a rough surface on one side and a fine surface on the other. The surface of this double-knitted fabric has the rough, firm, smooth texture and modern feel of outerwear, while the back side has a fine, comfortable texture that feels comfortable against the skin like underwear and has a heat-retaining effect. This double-knitted fabric simultaneously combines the effects of two different materials. [Means for solving the problem]

[0005] In order to solve the above problems, the technical solutions used are as follows:

[0006] The double knitted fabric is knitted on a double knitting machine and has one side, including the front and back sides, which is coarse and the other side is fine, the double knitted fabric having four courses in one cycle, the first and second courses being bottom single courses, the third course being a tucking course, and the fourth course being a top single course, the lower needle disc of the double knitting machine using a 28 gauge needle and the upper needle disc using a 14G thick needle gauge, the front of the double knitted fabric being perforated using the first and second courses, the perforation yarn being a 50S / 1 silo-spun acrylic-rayon blended yarn, the back of the double knitted fabric being perforated using the fourth course, the perforation yarn being a 26S compact-spun pure cotton yarn, and the front and back of the double knitted fabric being perforated using the third course.

[0007] The double knitted fabric has a surface knitted with 50S / 1 silo-spun acrylic and rayon blended yarn, which gives the surface a coarser texture, firmer and smoother feel, and a modern feel. The back is knitted with 26S compact spun pure cotton yarn, which gives the back a delicate and comfortable feel like underwear, and has a warming effect. The third course perforation acts as a transition between the perforations on the surface and back, so the double knitted fabric has two different fabric effects, and also has a certain elasticity between the front and back.

[0008] In a preferred implementation, the perforated yarn of said third course is 40D spandex.

[0009] In a further preferred embodiment, the coil length of said 40D spandex is 110MM / 100G.

[0010] In a preferred embodiment, the coil length of the silo-spun acrylic-rayon blended yarn is 290MM / 100G.

[0011] In a preferred embodiment, the compact spun cotton yarn is subjected to a yarn steaming treatment using a yarn steaming device.

[0012] In a preferred embodiment, the coil length of said compact spun cotton yarn is 185MM / 100G.

[0013] In a preferred embodiment, the backside of the double knitted fabric is perforated using the fourth course, and the perforated 26S compact spun pure cotton yarn is fed as a double yarn.

[0014] In a preferred embodiment, the bed size of the double knitting machine is 34 inches.

[0015] In a further preferred embodiment, the cylinder diameter of the double knitting machine is 34 inches. [Effects of the Invention]

[0016] The beneficial effects of this invention are as follows: The surface of this double-knitted fabric has the coarse, firm, smooth texture and modern feel of outerwear, while the back has a delicate, comfortable texture that feels like underwear and has heat-retaining properties. This double-knitted fabric simultaneously combines the effects of two different materials, and the specific values ​​for the heat-retaining properties of this invention have been determined to be a maximum temperature rise of 8.5°C for moisture absorption and heat generation, an average temperature rise of 3.2°C within 30 minutes, and a surface hydrophobicity of grade 4. [Brief explanation of the drawings]

[0017] [Figure 1] FIG. 2 is a knitting diagram of a double knitted fabric according to an embodiment of the present invention. [Figure 2] 1 is a diagram showing the triangle layout of a double knitted fabric according to an embodiment of the present invention; DETAILED DESCRIPTION OF THE INVENTION

[0018] The present invention will be further described below in conjunction with the drawings and specific embodiments.

[0019] This double knit fabric has one side coarse and the other side fine, is knitted on a double knitting machine, and includes a face and a back side. As shown in Figures 1 and 2, the double knit fabric has four courses in one cycle, with the first and second courses being bottom single courses, the third course being a tucking course, and the fourth course being a top single course. The bed size and cylinder diameter of the double knitting machine are both 34 inches, and the lower needle disc of the double knitting machine uses a 28 gauge needle, while the upper needle disc uses a 14G thick needle gauge. The face of the double knit fabric is perforated using the first and second courses, with the perforation yarn being a 50S / 1 silo-spun acrylic-rayon blend yarn. The back of the double knit fabric is perforated using the fourth course, with the perforation yarn being a 26S compact-spun pure cotton yarn. The face and back of the double knit fabric are perforated using the third course, with the perforation yarn for the third course being 40D spandex.

[0020] The silo-spun acrylic-rayon blended yarn is produced by the compact silo-spun bamboo charcoal / acrylic / rayon blended yarn and production method disclosed in Patent Publication CN105908305 B.

[0021] The double knitted fabric has a surface knitted with 50S / 1 silo-spun acrylic and rayon blended yarn, giving the surface a more coarse texture, firmness and smooth feel with a modern feel, while the back is knitted with 26S compact spun pure cotton yarn, giving the back a delicate and comfortable feel like underwear and providing heat retention. The third course perforation acts as a transition between the perforations on the surface and back, so the double knitted fabric has two different fabric effects and also has a certain elasticity between the front and back.

[0022] The coil length of 40D spandex is 110MM / 100G.

[0023] The coil length of the silo-spun acrylic-rayon blended yarn is 290MM / 100G.

[0024] The compact spun cotton yarn is steamed by a yarn steaming device, and the coil length of the compact spun cotton yarn is 185MM / 100G.

[0025] The above double knitted fabric was detected and its performance is as follows: JPEG0003253568000002.jpg86170

[0026] Evaluation item 1: Washing shrinkage: Referring to the evaluation methods GB / T 8628-2013 and GB / T 8629-2017, first measure the size of the fabric and record the data before the test, then start the test, wash and dry the fabric repeatedly, then measure it again and record the data after the test, and calculate the warp washing shrinkage and weft washing shrinkage of the double knitted fabric based on the two sets of data, the warp washing shrinkage is 3%, and the weft washing shrinkage is 3%.

[0027] Evaluation item 2: Washing twist rate: Refer to the evaluation method GB / T23319.2-2009, and directly use the fabric that has completed evaluation item 1 to measure the washing twist rate. The test result shows that the washing twist rate of the double-knitted fabric is 3%.

[0028] Evaluation item 3: Machine opening rate: Refer to the evaluation method FZ / T 70006-2004, and use the equipment to pull the fabric. The test results show that the machine opening rate in the warp direction of the double knitted fabric is 82.3%, and the machine opening rate in the weft direction is 160.4%.

[0029] Evaluation item 4: Tensile elastic recovery rate: Refer to the evaluation method FZ / T 70006-2004, use the fabric tested in evaluation item 3 to recover to the state before tension, measure the recovery data, and calculate with the original data to obtain the tensile elastic recovery rate. The calculation result shows that the warp tensile elastic recovery rate of the double knitted fabric is 94.4%, and the weft tensile elastic recovery rate is 98.6%.

[0030] Evaluation item 5: Ball burst strength: Refer to the evaluation method GB / T 19976 2005. This is the force measured when a spherical plunger is pressed perpendicularly against the surface of the fabric until it breaks. The data obtained from three tests are 365N / 375N / 382N, respectively.

[0031] Evaluation item 6: Moisture absorption and heat generation performance: Referring to evaluation method FZ / T 73036-2010, the maximum temperature rise measured was 8.5°C, and the average temperature rise within 30 minutes was 3.2°C.

[0032] Evaluation item 7: Surface hydrophobicity: Refer to the evaluation method GB / T 4745-1997, and the measurement result is grade 4.

Claims

1. A double knitted fabric having a rough surface on one side and a fine surface on the other side, including the front and back sides, knitted on a double knitting machine, wherein the double knitted fabric has four courses in one cycle, the first and second courses being bottom single courses, the third course being a tucking course, and the fourth course being a top single course; the lower needle disc of the double knitting machine uses a 28 gauge needle, and the upper needle disc uses a 14G thick needle gauge; the front side of the double knitted fabric is perforated using the first and second courses, and the perforation yarn is a 50S / 1 silo-spun acrylic-rayon blended yarn; the back side of the double knitted fabric is perforated using the fourth course, and the perforation yarn is a 26S compact-spun pure cotton yarn; and the front and back sides of the double knitted fabric are perforated using the third course.

2. 2. The double knitted fabric having a coarse surface and a fine surface as claimed in claim 1, wherein the perforated yarn of the third course is 40D spandex.

3. 3. The double knitted fabric having a coarse surface and a fine surface as claimed in claim 2, wherein the coil length of the 40D spandex is 110mm / 100g.

4. 2. The double knitted fabric having a coarse surface on one side and a fine surface on the other side according to claim 1, wherein the coil length of the silo-spun acrylic-rayon blended yarn is 290 mm / 100 g.

5. 2. The double knitted fabric having one side coarse and the other side fine as claimed in claim 1, wherein the compact spun pure cotton yarn is subjected to a yarn steaming treatment using a yarn steaming device.

6. 2. The double knitted fabric having a coarse surface on one side and a fine surface on the other side according to claim 1, wherein the coil length of the compact spun pure cotton yarn is 185 mm / 100 g.

7. The double knitted fabric having one side coarse and the other side fine, as described in claim 1, characterized in that the back side of the double knitted fabric is perforated using the fourth course, and the perforated 26S compact spun pure cotton yarn is fed as two threads.

8. 2. The double knitted fabric having a coarse surface and a fine surface as claimed in claim 1, wherein the bed size of said double knitting machine is 34 inches.

9. 9. The double knit fabric having a coarse surface and a fine surface as claimed in claim 8, wherein the cylinder diameter of said double knitting machine is 34 inches.

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