A knitted fabric

Abstract

The invention discloses a knitted fabric. Each weave cycle of the knitted fabric is composed of a frame and a filling area, and the surface density coefficient ratio Q of each weave cycle is greater than 0 and less than 1.00, wherein Q=Q1 / Q2, Q1 is the surface density coefficient of the frame, and Q2 is the surface density coefficient of the filling area. The fabric is light in texture and can be widely used in making underwear, vests, sportswear, T-shirts, pajamas, tights or casual clothes.

Description

Technical Field

[0001] The invention relates to a knitted fabric. Background Art

[0002] Nowadays, facing the extremely high temperature every year, people are in urgent need of a clothing fabric that is both light and soft. At present, the light and thin fabrics on the market are divided into two categories: woven and knitted. Among them, woven fabrics occupy most of the market share due to their good lightness and high strength. In particular, in order to increase the appearance of the fabric, the light and thin fabrics with plaid patterns formed by adjusting the fiber types and ratios of the warp and weft yarns are deeply loved by consumers, but the softness and stretchability of such fabrics are insufficient and cannot fully meet people's needs; although knitted fabrics are superior to woven fabrics in softness and stretchability, it is difficult to take into account both lightness and high burst strength at the same time, so they occupy a smaller market share, but there are also many related developments.

[0003] For example, Chinese patent document CN202214554U discloses a weft-knitted small checkered fabric, which includes horizontally arranged fine yarn weaving areas as horizontal stripes and vertically arranged coarse yarn needle drawing areas as vertical stripes, and an air layer composed of single-sided weaving is provided between the horizontal stripes and the vertical stripes. The checkered effect is obvious, and the fabric has a soft hand feel and good elasticity. However, the fabric is a double-sided tuck structure with a weft-knitted double rib needle arrangement. Although the weight of the fabric is reduced to a certain extent by the coordinated use of coarse and thin yarns to achieve lightweighting, it still needs further improvement.

[0004] For another example, Chinese patent document CN105934544A discloses a thin knitted fabric composed of plaid-patterned circulation units. Such a design achieves lightweight while ensuring high burst strength. However, since the surface of the fabric is relatively smooth, it is easy to adhere to the skin surface when sweating, causing people to feel uncomfortable such as stuffiness, itching, etc. Summary of the invention

[0005] The object of the present invention is to provide a knitted fabric having both high bursting strength and excellent dryness.

[0006] The technical solution of the present invention:

[0007] In the knitted fabric of the present invention, each tissue cycle is composed of a frame and a filling area, and the surface density coefficient ratio Q of each tissue cycle is greater than 0 and less than 1.00.

[0008] Q=Q1 / Q2,

[0009] Among them, Q1 is the surface density coefficient of the border, and Q2 is the surface density coefficient of the filling area.

[0010] The knitted fabric of the present invention utilizes a design of forming a tissue loop with a frame and a filling area to achieve the purpose of both high bursting strength and light weight. In addition, the fabric has good dryness and will not adhere to the skin even if a person sweats a lot. DETAILED DESCRIPTION

[0011] The knitted fabric of the present invention has a gram weight of 100 g / m 2 Below, preferably 30 to 90 g / m 2 If the weight exceeds 100g / m 2 If it is not, you will feel a lot of weight during exercise, and it may even affect quick-drying and breathability.

[0012] In the knitted fabric of the present invention, each weave cycle is composed of n frames (n is greater than or equal to 3) and a filling area, wherein the frames are used to improve the bursting strength of the fabric, and the filling area is used to reduce the weight of the fabric.

[0013] In the present invention, the surface density coefficient ratio Q of each tissue cycle is greater than 0 and less than 1.00.

[0014] Q=Q1 / Q2,

[0015] Among them, Q1 is the surface density coefficient of the border, and Q2 is the surface density coefficient of the filling area.

[0016] The surface density coefficient of the frame Q1 = the surface area of ​​the frame ⁄ the cross-sectional area of ​​the frame

[0017] The area density coefficient Q2 of the filling area = the surface area of ​​the filling area ⁄ the cross-sectional area of ​​the filling area.

[0018] The surface area and cross-sectional area of ​​the frame here are obtained by measuring the frame at the same position in 10 weave cycles of the fabric and taking the average value. For example, if the upper frame is measured in one weave cycle, the upper frame is also measured in the other 9 weave cycles and the average value is taken.

[0019] The surface area and cross-sectional area of ​​the filling area here are obtained by measuring the filling area in 10 tissue cycles of the fabric.

[0020] When the surface density coefficient ratio Q of each tissue cycle is equal to 1.00, the surface density coefficients of the border and the filling area are the same. In this way, it is difficult to take into account the requirements of high burst strength and low weight, and the fabric surface is relatively flat, which affects the dryness. When the surface density coefficient ratio Q is greater than 1.00, the surface density coefficient of the border is large. Under the same conditions, the weight of the fabric increases, and the contact area between the border and the skin increases, which will also affect the dryness.

[0021] The knitted fabric of the present invention preferably has a frame formed of the same yarn. The same yarn here refers to yarns of the same thickness, and the fiber materials may be the same or different. If the frame is made of yarns of different deniers, the frame appearance may not be obvious, weak sections may appear in the frame, and the bursting strength may decrease. If the weak section is replaced with a thicker yarn, the gram weight may increase.

[0022] The present invention has no limitation on the fineness of the yarn. In order to obtain a better lightness and high strength effect, it is preferred that the average fineness of the yarn forming the frame is higher than the average fineness of the yarn forming the filling area. If the average fineness of the yarn in the filling area is higher than the average fineness of the yarn in the frame, in order to maintain the same gram weight, the weaving density needs to be reduced, which will inevitably lead to a reduction in the yarn content per unit area, which may affect the bursting strength of the fabric.

[0023] In order to obtain a grammage of 100g / m 2 In order to achieve the following light and thin effect, the yarn used in the frame and filling area needs to use low-denier yarn as much as possible. Taking into account the lightness and weaving of the fabric, when the yarn of the frame in the present invention is filament multifilament, its fineness is preferably 20-100 denier (hereinafter referred to as D), more preferably 30-50D; when the yarn of the frame is spun yarn, its fineness is 80-100 denier. When the yarn of the filling area is filament multifilament, its fineness is preferably 20-50D, more preferably 20-40D, and when the apparent yarn of the filling area is spun yarn, its fineness is preferably 80-100 denier.

[0024] When the yarn used is spun yarn, since the strength of spun yarn is lower than that of filament multifilament, in order to obtain fabrics with the same bursting strength, the spun yarn used should be thicker than the filament multifilament. It should be noted that the fineness of spun yarn in the above text is measured in counts. The higher the count value, the finer the yarn. Denier and count can be converted according to "denier = 5315 / count".

[0025] The fiber raw materials of the yarns of the frame and the filling area of ​​the present invention are not particularly limited, and can be one or more of ordinary polyester (PET), cationic dyeable polyester (CDP), polyamide, cotton, etc.

[0026] Preferably, the yarn forming the frame of the present invention contains elastic fibers. The elastic fibers here are not particularly limited, and examples thereof include polyurethane fibers (PU), polybutylene terephthalate fibers (PBT), polytrimethylene terephthalate fibers (PTT), polyethylene terephthalate / polybutylene terephthalate parallel composite fibers (PET / PBT), polyethylene terephthalate / polytrimethylene terephthalate parallel composite fibers (PET / PTT), etc. The use of elastic fibers in the frame can not only give the fabric elasticity, but also improve the bursting strength of the fabric. After adding the elastic fibers, the elastic fibers drive the non-elastic fibers to shrink, and the frame becomes thicker under the same conditions, so that the bursting strength of the fabric is effectively improved.

[0027] In order to take into account the bursting strength, elasticity and lightness of the fabric, the content of the elastic fiber in the present invention is preferably 5% to 10% by weight. If the content of the elastic fiber is less than 5% by weight, the contribution of the elastic fiber to the elasticity of the fabric tends to decrease. If the content of the elastic fiber exceeds 10% by weight, the gram weight of the fabric tends to increase. In the present invention, the content of the elastic fiber is more preferably 7.0% to 8.5% by weight.

[0028] The fabric frame and filling area of ​​the present invention are not limited to full loops, but can also be loops combined with tucks and floats. The frame and filling area are not limited to squares, but can also be rectangles, rhombuses, irregular quadrilaterals or pentagons.

[0029] The present invention uses the peeling angle to simulate the scene of clothes sticking to the skin to evaluate the dryness of the fabric. The smaller the peeling angle, the better the dryness. In the present invention, the peeling angle is preferably 90° to 110°.

[0030] The present invention will be further described below in conjunction with embodiments and comparative examples.

[0031] The test methods of various parameters involved in the present invention are as follows:

[0032] (1) Surface area of ​​the border

[0033] Randomly select 10 tissue loops in the fabric, measure the length and width of the borders at the same position of the 10 tissue loops under a microscope (25 times magnification) (for example, in the case of a square, if the first tissue is the upper border, the remaining 9 tissues are also the upper borders), and calculate the surface area of ​​each border S = length * width. Then calculate the sum of the surface areas of the 10 borders, and take the average value as the surface area of ​​the border of the present invention.

[0034] (2) Cross-sectional area of ​​the frame

[0035] Randomly select 10 weave cycles in the fabric, and use SUPERSCAN SS-550 (manufactured by Shimadzu Corporation, Japan) to measure the cross section of each yarn of the frame at the same position of each weave cycle (for example, in the case of a square, if the first weave is the upper frame, the remaining 9 weaves are also the upper frames). First calculate the cross-sectional area of ​​a frame in one weave cycle = the sum of the cross-sectional areas of the yarns forming the frame / number of yarns. The cross-sectional areas of the frames of the remaining 9 weave cycles are obtained in the same way, and the average value of the 10 sets of data is taken as the cross-sectional area of ​​the frame of the present invention.

[0036] (3) Surface area of ​​the filling area

[0037] Randomly select 10 tissue loops in the fabric, measure the length and width of the filling area of ​​the 10 tissue loops under a microscope (25 times magnification), and calculate the surface area of ​​each filling area S = length * width. Then calculate the sum of the surface areas of the 10 filling areas, and take the average value as the surface area of ​​the filling area of ​​the present invention.

[0038] (4) Cross-sectional area of ​​the filling area

[0039] Randomly select 10 weave loops in the fabric, and use SUPERSCAN SS-550 (manufactured by Shimadzu Corporation, Japan) to measure the cross section of each yarn in the filling area of ​​each weave loop. First calculate the cross-sectional area of ​​the filling area in one weave loop = the sum of the cross-sectional areas of each yarn forming the filling area / the number of yarns. The cross-sectional areas of the filling areas of the remaining 9 weave loops are obtained in the same way, and the average value of the 10 sets of data is taken as the cross-sectional area of ​​the filling area of ​​the present invention.

[0040] (5) Yarn fineness

[0041] Tested according to JIS L 1013:2010 standard.

[0042] (6) Weight

[0043] Use a disc sampler to carve 100cm 2 Weigh the sample to get the weight value (g) of the sample, multiply the weight value by 100, and calculate the weight of the sample per square meter, that is, the gram weight (g / m 2 ).

[0044] (7) Bursting strength

[0045] Based on JIS L1096(2010)A method.

[0046] (8) Peeling angle

[0047] The peeling angle was tested using a homemade muscle separation tester. The muscle separation tester mainly includes a bracket, a transparent plastic plate, a protractor and a handle. The plastic plate of the muscle separation tester is rotated to a horizontal position, at which time the scale of the protractor is zero. 0.3 ml of water is dripped on the horizontally placed transparent plastic plate, and the reverse side of the 10 cm*10 cm sample cloth is contacted and attached with water. The position of the water drop is located at the center of the sample cloth. Wait for 1 minute until the water fully soaks the sample cloth, start to rotate the plastic plate counterclockwise, and wait for the sample cloth to separate from the plastic plate. The angle at which the plate is rotated is recorded as the peeling angle. Test 3 groups of data, and take the average value as the peeling angle of the present invention.

[0048] Example 1

[0049] On the single-sided circular knitting machine, 7 routes are knitted in one cycle. The 1st and 2nd routes are knitted with 50D / 72f ordinary PET DTY by full looping; the 3rd, 5th and 7th routes are knitted with 30D / 24f ordinary PET DTY, and the 4th and 6th routes are knitted with 50D / 72f ordinary PET DTY by floating, tucking and looping combination to obtain the grey fabric.

[0050] The grey cloth was shaped at 170°C for 60 seconds, then scouring and dyeing (125°C for 30 minutes, reduction cleaning with sodium hydroxide and sodium hydrosulfite (sodium dithionite) at 80°C for 20 minutes, processed with polyester absorbent resin at 50°C for 20 minutes, and finally shaped at 160°C for 60 seconds to obtain the knitted fabric of the present invention, as shown in Table 1.

[0051] Example 2

[0052] The first route uses 50D / 72f common PET DTY, the second route uses 70D / 72f common PET DTY, and the rest is the same as in Example 1 to obtain the knitted fabric of the present invention, as shown in Table 1.

[0053] Example 3

[0054] 20D PU bare yarn was respectively knitted into the first and second routes by means of added yarn, and the rest was the same as in Example 1 to obtain the knitted fabric of the present invention, as shown in Table 1.

[0055] Example 4

[0056] 20D PU bare yarn is knitted into the first route in the form of added yarn, and the rest is the same as in Example 1 to obtain the knitted fabric of the present invention, as shown in Table 1.

[0057] Example 5

[0058] 30D PU bare yarn was respectively knitted into the first and second routes by means of added yarn, and the rest was the same as in Example 1 to obtain the knitted fabric of the present invention, as shown in Table 1.

[0059] Example 6

[0060] The 1st and 2nd routes use 30D / 36f common PET DTY, the 3rd, 5th and 7th routes use 50D / 72f common PET DTY, and the rest is the same as in Example 1 to obtain the knitted fabric of the present invention, as shown in Table 1.

[0061] Example 7

[0062] 20D PU bare yarn was respectively knitted into the 3rd, 5th and 7th routes by means of added yarn, and the rest was the same as in Example 1 to obtain the knitted fabric of the present invention, as shown in Table 1.

[0063] Example 8

[0064] On a single-sided circular knitting machine, 32 routes are knitted in one cycle. The 1st to 7th routes and the 17th to 23rd routes are knitted with 50D / 36f cationic dyeable PET (CDP) DTY in a full looping manner, and 20D PU bare yarn is knitted into the 1st, 4th, 7th, 17th, 20th, and 23rd routes respectively in a filling yarn manner; the 8th to 16th routes and the 24th to 32nd routes are knitted with 40D / 34f polyamide DTY in a floating yarn and looping combination manner, and the rest is the same as in Example 1, to obtain the knitted fabric of the present invention, as shown in Table 1.

[0065] Example 9

[0066] The 1st to 7th and 17th to 23rd routes use 40 Ne cotton yarn, and the rest is the same as in Example 8 to obtain the knitted fabric of the present invention, as shown in Table 1.

[0067] Comparative Example 1

[0068] The 1st to 5th routes are woven with 50D / 72f common PET DTY by full looping; the 6th and 7th routes are woven with 30D / 36f common PET DTY by a combination of floating thread, tucking and looping, and the rest is the same as in Example 1 to obtain a knitted fabric, as shown in Table 1.

[0069] Comparative Example 2

[0070] The 1st and 2nd routes used common PET DTY of 50D / 36f, and the 3rd, 5th and 7th routes used common PET DTY of 50D / 72f. The rest was the same as in Example 1 to obtain a knitted fabric, as shown in Table 1.

[0071] Table 1

[0072]

[0073] According to the above table,

[0074] (1) It can be seen from Example 1 and Example 2 that, under the same conditions, the fabric with a frame formed by the same type of yarn has a similar bursting strength as the fabric with a frame formed by different types of yarn. The surface density coefficient Q of the former is smaller than that of the latter, the gram weight is lower than that of the latter, and the skin dryness is better than that of the latter (the peeling angle of the former is slightly smaller).

[0075] (2) It can be seen from Example 3 and Example 1 that, under the same conditions, the surface density coefficient Q of the fabric containing PU yarn in the frame is smaller than that of the fabric not containing PU yarn in the frame. Although the gram weight of the former is slightly larger than that of the latter, its bursting strength is much higher than that of the latter, and its dryness is better than that of the latter (the former has a smaller peeling angle).

[0076] (3) It can be seen from Example 3 and Example 7 that, under the same conditions, the surface density coefficient Q of the fabric containing PU yarn in the frame is significantly smaller than that of the fabric containing PU yarn in the filling area. Although the bursting strength of the latter is higher than that of the former, the gram weight of the former is lower than that of the latter, and the dryness of the skin surface is significantly better than that of the latter (the former has a smaller peeling angle).

[0077] (4) It can be seen from Example 1 and Example 6 that, under the same conditions, the surface density coefficient Q of the fabric whose average frame fineness is greater than the average frame fineness of the filling area is smaller than that of the fabric whose average frame fineness is less than the average frame fineness of the filling area. Although the bursting strength of the former is smaller than that of the latter, the gram weight of the former is lower than that of the latter, and the dryness of the skin surface is better than that of the latter (the former has a smaller peeling angle).

[0078] (5) It can be seen from Comparative Example 1 and Example 1 that, under the same conditions, the fabric with a surface density coefficient ratio Q of 3.60 is compared with the fabric with a surface density coefficient ratio Q of 0.81. Although the former has a higher bursting strength, it has a heavier grammage and poor skin dryness (the former has a larger peeling angle).

[0079] (6) It can be seen from Comparative Example 2 and Example 1 that, under the same conditions, the fabric with a surface density coefficient ratio Q of 1.00 and an average frame fineness equal to the average fineness of the filling area is compared with the fabric with a surface density coefficient ratio Q of 0.81 and an average frame fineness greater than the average fineness of the filling area. Although the former has a higher burst strength, it has a higher grammage and poor skin dryness (the former has a larger peeling angle).

Claims

1. A knitted fabric, characterized in that: Each weave cycle of the knitted fabric is composed of a frame and a filling area, and the surface density coefficient ratio Q of each weave cycle is greater than 0 and less than 1.

00. Q=Q1 / Q2, Among them, Q1 is the surface density coefficient of the frame, Q1=surface area of ​​the frame / cross-sectional area of ​​the frame, The surface area and cross-sectional area of ​​the frame are obtained by measuring the frames at the same position in 10 weave cycles of the fabric and taking the average value; Q2 is the surface density coefficient of the filling area, Q2 = surface area of ​​the filling area / cross-sectional area of ​​the filling area, The surface area and cross-sectional area of ​​the filling area are obtained by measuring the filling area in 10 tissue cycles of the fabric.

2. The knitted fabric according to claim 1, characterized in that: The border is formed from the same yarn.

3. The knitted fabric according to claim 1 or 2, characterized in that: The average fineness of the yarns forming the frame is greater than the average fineness of the yarns forming the filling area.

4. The knitted fabric according to claim 1 or 2, characterized in that: The yarns forming the frame contain elastic fibers.

5. The knitted fabric according to claim 4, characterized in that: The content of the elastic fiber in the frame is 5% to 10% by weight of the frame yarn.

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