Knitted fabric

Abstract

The knitted fabric at least comprises yarns A and yarns B, the yarns A are superfine bicomponent fibers with the filament number of below 0.20 dtex, the content ratio WA of the yarns A on at least one face of the faces where the yarns A are located is more than 50%, and the elastic elongation EA of the yarns A and the elastic elongation EB of the yarns B in the knitted fabric meet the following relational expression that EA / EB is larger than 1.0 and smaller than or equal to 2.0. The knitted fabric is fine and skinny in hand feeling, good in rebound resilience and suitable for manufacturing T-shirts, jackets and the like.

Description

Knitted fabric

[0001] The present application relates to a knitted fabric.

[0002] With the continuous improvement of material level and cultural level, people's clothing concept is also becoming more elegant and open, and there are higher requirements in terms of delicate hand feeling, bone feeling and resilience.

[0003] For example, Chinese patent document CN112391721A discloses a raised and warm knitted fabric, which specifically discloses that the knitted fabric includes a front surface and a back surface, the back surface has a concave-convex structure with a height difference of 100-260 microns, and the back surface has a hair length of 100-1500 microns. The fine and delicate hair adheres to the skin and is smooth, but it needs to be processed to obtain a delicate hand feeling, and it also has deficiencies in elasticity.

[0004] For example, patent document WO2020 / 048473 discloses a fabric, which specifically discloses that the fabric is composed of at least a mixed filament, the mixed filament contains a plurality of ultrafine fibers, the diameters of the plurality of ultrafine fibers are less than 7 microns, the plurality of ultrafine fibers at least contain a filament A and a filament B with a filament length difference greater than 5%, the mixed filament has a core-sheath structure, the sheath yarn is the aforementioned ultrafine fiber, and the core yarn is a high-shrinkage polyester fiber or a high-shrinkage polyamide fiber. The fabric has a more fluffy, soft and delicate hand feeling, and has a certain waist bone feeling and resilience, but the mixed filament used is obtained by controlling the filament length difference to obtain the core-sheath structure, and the process is relatively complex.

[0005] For example, Chinese patent document CN103437047B discloses a preparation method of a weft-knitted jacquard suede fabric, which specifically discloses that high-shrinkage silk and ultrafine fiber are selected as raw materials, the knitted fabric is woven by jacquard, the high-shrinkage silk and ultrafine fiber are mainly used in the pattern part, the high-shrinkage silk is mainly used in other parts, and post-processing including fiber opening and raising is performed. The processing flow is short, the pattern effect is clear, but the jacquard process is complex and the cost is high, and the jacquard pattern area is easy to hook silk, in addition, due to the inconsistency of elasticity between the pattern part and the other part, some areas are prone to appear wrinkles during stretching, and the resilience is insufficient.

[0006] For example, Japanese patent document JP2019-157321 discloses an elastic fabric, which specifically discloses that the elastic fabric contains 80% by weight or less of a three-dimensional crimped yarn composed of two kinds of polyester resins with different shrinkage in a parallel manner, and the fabric has high elasticity, superior fullness and high tensile strength. However, since the fineness of the ultrafine fiber monofilament used is between 0.5 and 4 dtex, the fabric needs to be further improved in terms of softness and delicacy.

[0007]

[0008] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a knitted fabric that is simple to produce, has a delicate hand feel, a good texture, and excellent resilience.

[0009] The technical solution of the present invention is as follows:

[0010] The knitted fabric of the present invention comprises at least yarn A and yarn B, wherein yarn A is an ultrafine bicomponent fiber with a monofilament fineness of less than 0.20 dtex, and the content of yarn A on at least one side of the fabric containing yarn A is W. A Above 50%, and the elastic elongation E of yarn A in the knitted fabric A And the elastic elongation E of yarn B B The following relationship must be satisfied: 1.0 < E A / E B ≤2.0.

[0011] In this invention, by using the content rate W A The use of ultra-fine bicomponent fibers with a specific monofilament fineness of over 50% as A yarn improves the fabric's resilience and achieves a delicate hand feel. In addition to the aforementioned A yarn, the fabric also contains B yarn with a lower elastic elongation than its elastic elongation. The B yarn is used to restrain the A yarn, thereby enhancing the fabric's structure.

[0012] The knitted fabric of the present invention comprises at least yarn A and yarn B. Yarn A is an ultrafine bicomponent fiber with a significant three-dimensional crimp structure, and its monofilament fineness is below 0.20 dtex. The content of yarn A is W on at least one of the surfaces containing yarn A. A With a content of over 50%, this not only improves the fabric's resilience but also enhances its hand feel.

[0013] If the content of yarn A in all facets is less than 50%, even if the fineness of yarn A is below 0.20 dtex, the fabric will still feel relatively rough. Under the same total yarn fineness conditions, the ultrafine bicomponent fiber used in this invention has a higher F-number (number of single filaments), which better fills the gaps in the fabric, resulting in a denser and smoother surface. Preferably, the content of yarn A on at least one facet is W... A It ranges from 70% to 100%.

[0014] In this invention, yarn A can appear on both sides of the fabric simultaneously, or it can appear on only one side. Specifically, when the fabric is formed from yarn A and yarn B, yarn A and yarn B can appear on both sides, or only yarn A can appear on one side and only yarn B appears on the other side, or only yarn A or yarn B can appear on one side and both yarn A and yarn B appear on the other side. When yarn A appears on both sides, the content W of yarn A on one side is... A A concentration of 50% or higher is acceptable. When the surface containing yarn A is used as the outermost layer, the monofilament fineness T of yarn A... A0.10-0.20 dtex. T A If less than 0.10 dtex, the strength of the fabric can be affected.

[0015] The ultrafine bicomponent fiber herein is not particularly limited in composition, and can be two different kinds of fiber-forming polymers or the same kind of fiber-forming polymer with different properties. Examples of the former include high-viscosity polyethylene terephthalate / low-viscosity polyethylene terephthalate (PET / PET), polytrimethylene terephthalate / polyethylene terephthalate (PTT / PET), and polybutylene terephthalate / polyethylene terephthalate (PBT / PET). Examples of the latter include high-viscosity polyethylene terephthalate / low-viscosity polyethylene terephthalate (PET / PET), polytrimethylene terephthalate / polyethylene terephthalate (PTT / PET), and polybutylene terephthalate / polyethylene terephthalate (PBT / PET). The ultrafine bicomponent fiber herein is not particularly limited in form, and examples include sheath-core type, side-by-side type, and segmented pie type. As a preferred embodiment, the ultrafine bicomponent fiber of the present application is of the side-by-side type. The side-by-side type ultrafine bicomponent fiber herein can be obtained by direct spinning and used as is in the knit fabric, or can be obtained by knitting a knit fabric from island-in-sea composite fibers and then removing the sea component, which is a soluble component such as co-PET.

[0016] The elastic elongation E of the A yarn in the knit fabric of the present application A is greater than the elastic elongation E of the B yarn B and satisfies the following relationship: 1.0 < E A / E B ≤ 2.0. If E A / E B is greater than 2.0, the elongation of the A yarn is greater than that of the B yarn under the same conditions, and when the A yarn and the B yarn are on the same surface, uneven shrinkage of the two can cause problems such as snagging and insufficient resilience. If E A / E B is less than or equal to 1.0, when the A yarn and the B yarn are on the same surface, the surface of the A yarn is rough to the touch, and the resilience of the fabric is affected. When the A yarn and the B yarn are not on the same surface, the surface of the A yarn is also rough to the touch, and the fabric has a reduced bone feel.

[0017] As a preferred embodiment, the B yarn has a melting enthalpy of 40 J / g or less, and more preferably 20-40 J / g. The melting enthalpy herein refers to the heat enthalpy value when the fiber is melted. If the melting enthalpy of the B yarn is greater than 40 J / g, although the fiber has high crystallinity and good dimensional stability, the thermal shrinkage of the yarn is reduced, and the fabric has a tendency to lose its tightness and delicate feel, so this is not preferred.

[0018] As a preferred embodiment, the B yarn in the present application has a filament fineness T B that satisfies the following relationship with the filament fineness T A of the A yarn: TB / T A ≥10.0. Considering that the monofilament fineness of yarn A is relatively low in order to achieve a delicate hand feel, if T... B / T A If the stiffness is less than 10.0, the B yarn may not have enough rigidity to improve the fabric's structure, therefore it is not a preferred choice. If T... B / T A If the fiber density is greater than 25.0, the stiffness of the B yarn is too high, which may cause the overall fabric to feel stiff; moreover, if the F number of the B yarn is low, it may cause a stinging sensation when worn, so it is not preferred. T yarn is more preferred in this invention. B / T A The value ranges from 10.0 to 25.0.

[0019] Preferably, in this invention, the yarn length L of yarn A is... A The thread length L of yarn B B The following relationship must be satisfied: 1.00 < L A / L B ≤2.00. When yarn A and yarn B are not on the same side, if L A / L B If the shrinkage rate is ≤1.00, then yarn B will not have a shrinkage effect, which may affect the smoothness of the side with yarn A, and the overall fabric's structure may decrease; while if L... A / L B If the yarn density is >2.00, the fabric will shrink too much, and its elasticity will tend to decrease. Additionally, longer yarns are more likely to bulge, potentially causing an uneven fabric surface and affecting its delicate texture; therefore, it is not a preferred choice. When yarn A and yarn B are on the same side, if L... A / L B If the value is ≤1.00, horizontal stripes may appear on the fabric; if L A / L B If the value is greater than 2.00, the shrinkage difference between yarns on the same side will be relatively large, which may affect the delicate feel of the fabric and cause insufficient elasticity. Therefore, it is not a preferred choice.

[0020] In this invention, the content of yarn A is W A On the side with more than 50% coverage, the length of yarn A is preferably 190–220 mm / 100 loops. When the length of yarn A is less than 190 mm / 100 loops, the weaving difficulty increases, and warp issues may occur in the fabric; therefore, it is not preferred. When the length of yarn A is greater than 220 mm / 100 loops, the hand feel tends to decline; therefore, it is not preferred.

[0021] In addition to yarns A and B mentioned above, other yarns, such as ordinary PET yarn (ethylene terephthalate), cotton yarn, etc., can be used in the fabric of this invention as needed.

[0022] As preferred, the knitted fabric of the present application has a transverse elastic recovery rate of 60% or more and a longitudinal elastic recovery rate of 80% or more.

[0023] As preferred, the knitted fabric of the present application has a drape coefficient of 8.0% or more, and a superior bone feeling.

[0024] As preferred, the knitted fabric of the present application has an average dynamic friction coefficient of the surface where the A yarn is located of 0.40 or less.

[0025] The present application is further illustrated below in combination with examples and comparative examples.

[0026] The test methods of the parameters involved in the present application are as follows:

[0027] (1) Sampling

[0028] a. Qualitative analysis of A yarn

[0029] Prepare a flat and wrinkle-free knitted fabric, and cut 10 pieces of fabric with a size of 20 cm x 20 cm as test samples. First, take one of the test samples, determine a complete organization and yarn cycle, then disassemble the yarn and draw the organization chart of the fabric, and measure the linear density N (dtex) of the disassembled yarn according to the method of GB / T 4743-2009. Finally, take 5 cm of each of the disassembled yarns, and use the paraffin embedding method for sample preparation, and the specific test method is as follows:

[0030] ① Two pieces of L-shaped metal sheets with a height of 1 cm are spliced together to form a groove-shaped mold, and the openings on the two metal sheets are opposite to each other, and the yarn to be tested is vertically placed thereon. Among them, the length direction of the metal sheet is provided with an opening every 1 cm, and the opening height is 2 / 3 of the height of the metal sheet.

[0031] ② Dissolve the solid paraffin as an embedding agent into a liquid state, slowly inject it into the metal mold, and penetrate into the yarn.

[0032] ③ After the paraffin solidifies, separate the L-shaped metal sheets to demold.

[0033] ④ After demolding, the paraffin strip is sampled so that each yarn to be tested is located at the center position of the paraffin block after sampling. Then heat one side of the paraffin block perpendicular to the yarn, and stick it to a small wooden block of appropriate size.

[0034] ⑤ Take the yarn as the center, trim the paraffin block into a cone type (four-sided cone), and the end of the yarn away from the wooden block is located at the top of the cone.

[0035] ⑥ Place the small wooden block on the microtome and continuously slice the conical paraffin block.

[0036] ⑦Transfer the cut pieces to a glass slide and heat the cut pieces on a heating stage. The heating conditions are preferably such that the paraffin on the section is completely dissolved and the yarn is completely exposed. For example, if the heating stage temperature is set to 90°C and the preheating time is set to 5 minutes.

[0037] ⑧Adjust the digital microscope (VXH-6000) to 1000x and observe the cross-sectional morphology at this magnification and count the number of filaments F (roots) to obtain the filament fineness T = N / F of each yarn. The yarns that have a filament fineness of 0.20 dtex or less and exhibit two components in the cross section are determined to be A yarns, and the remaining yarns are determined to be other yarns.

[0038] b.Qualitative analysis of B yarns

[0039] Take one of the fabric samples and mark a length of 10 cm on the fabric in the direction of the loops. Sample five A yarns and five other yarns for use as samples. Then, place the sample yarns in an environment with a temperature of 20°C and a humidity of 65% RH for 24 hours. Take one A yarn from the sample yarns and calculate the pre-tension G = 0.176*10 -3 *N A Hang a weight of the same load and measure the length of the A yarn at this time and record it as D1 (cm). Then, calculate the elastic elongation E A (%) = (D1-10) / 10*100%.

[0040] Calculate the elastic elongation of the remaining four A yarns in the same manner and take the average of the five sets of data as the elastic elongation E A of the A yarns of the present application (round off to one decimal place).

[0041] Calculate the elastic elongation E 其他 of the other yarns in the same manner. When the elastic elongation value of E 其他 satisfies the range of greater than or equal to 0.5E A and less than 1E A , the yarn is determined to be a B yarn, and the elastic elongation is recorded as E B .

[0042] (2) A yarn content rate on the surface of the A yarns

[0043] Determine a complete organization and yarn cycle according to the sampling procedure in (1) above, and then determine the number of loops n of the A yarns that are disassembled.

[0044] Calculate the A yarn content rate W A on the surface according to the following formula:

[0045] W A = n / m*100%

[0046] wherein n is the number of loops of A yarn on the surface, and m is the total number of loops on the surface.

[0047] The A yarn content on the surface of the other 4 fabric samples was measured and calculated in the same manner, and the average of 5 times was taken as the A yarn content W on the surface of the A yarn in the present application. A .

[0048] (3) The ratio of the elastic elongation of A yarn to B yarn

[0049] According to the sampling steps of (1) above, the elastic elongation E of A yarn and B yarn was measured A , E B , and the value of E A / E B was calculated, and the average of 5 times was taken as the ratio of the elastic elongation E A / E B .

[0050] (4) The ratio of the length of A yarn to B yarn

[0051] According to the sampling steps of (1) above, 1 piece of fabric sample (size: 20 cm x 20 cm) was taken out and the full organization and yarn cycle were determined.

[0052] The starting position of 100 loops on the fabric was marked, and at least 10 A yarns and 10 B yarns were taken out, the A yarn was stretched, the length L of the A yarn was recorded A1 , and the length of the remaining 9 A yarns was measured, then L A = (L A1 + L A2 + … + L A10 ) / 10, and the result was rounded to the nearest integer. The length of the B yarn was measured in the same way L B , and the ratio L A / L B

[0053] (5) Melt enthalpy

[0054] According to the sampling steps of (1) above, the B yarn was distinguished. 3-5 mg of B yarn was weighed as 1 sample by a balance, and a total of 5 samples were weighed to 0.01 mg. 1 sample was taken, a differential scanning calorimeter (manufacturer: TA, model: DSC2A-01820) was used, and DSC test was carried out according to GB / T 40271-2021 standard, the temperature was raised to 280℃ at 10℃ / min, the DSC curve was obtained, the melt enthalpy was measured, and the result was accurate to 0.1 J / g. The melt enthalpy of the remaining 4 samples was measured in the same way, and the average value was taken as the melt enthalpy of the yarn in the present application (the result was rounded to the nearest integer).

[0055] (6) Elastic recovery rate

[0056] The test was conducted according to JIS L 1096:2010 Method D.

[0057] (7) Sag coefficient

[0058] Place a cylinder with a diameter of approximately 5cm on an A4 sheet of paper. Take a picture of it from a fixed height of 20cm. Then, draw the projected outline of the cylinder on the A4 paper. Finally, use an area meter to read the projected area A of the cylinder. d Cut three circular sample fabrics, each 24cm in diameter, and calculate the actual area A0 of the sample fabric. Take one of the sample fabrics and place it concentrically on a cylinder with a diameter of 5cm, fixing it in place. Let the rest of the sample fabric hang naturally along the edge of the cylinder. Shake the sample fabric and cylinder up and down three times, then place it on an A4 sheet of paper for 1 minute. Take a picture from a height of 20cm and draw the projected outline of the sample fabric on the A4 paper. Then use an area meter to read the projected area A0 of the sample fabric. s , sag coefficient D% = (A s -A d ) / (A0-A d *100%. The drape coefficients of the three sample fabrics were measured and calculated in the same manner, and the average value was taken as the drape coefficient of this invention.

[0059] (8) Average coefficient of kinetic friction

[0060] Following the sampling steps described in (1) above, take a 20cm×20cm fabric sample and mark one side as side I and the other side as side II. (For example, if the content of yarn A on one side is greater than 50% and the content on the other side is less than 50%, then the side with the content of yarn A greater than 50% is side I and the other side is side II; if the content of yarn A on both sides is greater than 50%, then the side with the larger content of yarn A is side I and the other side is side II.) Then, according to the KES-FB4 surface characteristic test, the average coefficient of friction is tested. The test equipment is the KES-FB4 surface characteristic equipment (SURFACE TESTER DIVISION KATO TECH CO.LTD KYOTO JAPAN KES-FB4). The average coefficient of dynamic friction of side I is tested. Then, the average coefficient of dynamic friction of side I of the remaining 4 sample fabrics is measured in the same way, and the average value is taken as the average coefficient of dynamic friction of side I of the fabric of the present invention.

[0061] Example 1:

[0062] On a 32G single-jersey circular knitting machine, flat knitting plating stitch is used for knitting. The face yarn is A yarn and the inside yarn is B yarn, wherein the A yarn is all 42 dtex / 12 f island composite fiber (sea component is co-PET and island component is PBT / PET), the B yarn is all 33 dtex / 12 f PET FDY (fusion enthalpy is 34 J / g), the face yarn and the inside yarn are fed into the yarn feeding nozzle at the same time, wherein the face yarn covers the inside yarn, the line length of the A yarn is 220 mm / 100 coils, the line length of the B yarn is 214 mm / 100 coils, and a gray fabric with a density of 33 w / inch*67 c / inch is obtained. Then, the fabric is subjected to weight reduction (95℃*35 minutes, liquid alkali 20g / L), preshrinking (130℃*30 minutes), intermediate setting (180℃*60 seconds), dyeing (130℃*30 minutes), and post-finishing setting (Japanese Daikin waterproof agent XF5003 60g / L, crosslinking agent RUCOGUARD XCR 20g / L, 160℃*60 seconds) to obtain the knitted fabric of the application, which is shown in Table 1.

[0063] Example 2:

[0064] Two kinds of yarns are selected as the face yarn, which are face yarn 1 and face yarn 2. The face yarn 1 is A yarn and the inside yarn is B yarn, and the face yarn 2 is C yarn, wherein 1-7 routes are A yarn, all of which are 42 dtex / 12 f island composite fiber (sea component is co-PET and island component is PBT / PET), and 8-10 routes are C yarn, which are 30 dtex / 36 f ordinary PET DTY (fusion enthalpy is 55 J / g), and the rest is the same as example 1 to obtain the knitted fabric of the application, which is shown in Table 1.

[0065] Example 3:

[0066] The inside yarn is B yarn, which uses 33 dtex / 24 f PET FDY (fusion enthalpy is 28 J / g), and the rest is the same as example 1 to obtain the knitted fabric of the application, which is shown in Table 1.

[0067] Example 4:

[0068] The inside yarn is B yarn, which uses 30 dtex / 36 f PET FDY (fusion enthalpy is 26 J / g), and the rest is the same as example 1 to obtain the knitted fabric of the application, which is shown in Table 1.

[0069] Example 5:

[0070] The inside yarn is B yarn, and the line length of the B yarn is 220 mm / 100 coils to obtain a gray fabric with a density of 33 w / inch*50 c / inch, and the rest is the same as example 1 to obtain the knitted fabric of the application, which is shown in Table 1.

[0071] Example 6:

[0072] The B yarn is used as the lining yarn, and the length of the B yarn is 205 mm / 100 loops, so that a fabric with a density of 33 w / inch*77 c / inch is obtained, and the rest is the same as in Example 1, so that the knitted fabric of the application is obtained, and the details are shown in Table 1.

[0073] Example 7:

[0074] The flat knitting plating stitch is used for knitting on a 36G single-sided circular knitting machine. The A yarn is selected as the surface yarn, and the B yarn is selected as the lining yarn, wherein the B yarn is all 30 dtex / 24 f ordinary PET DTY (melting enthalpy is 47 J / g), the length of the A yarn is 225 mm / 100 loops, and the length of the B yarn is 219 mm / 100 loops, and the rest is the same as in Example 1, so that the knitted fabric of the application is obtained, and the details are shown in Table 1.

[0075] Example 8:

[0076] The A yarn is selected as the surface yarn, and all of them are 70 dtex / 12 f island composite fibers (the sea component is co-PET, and the island component is PTT / PET), and the rest is the same as in Example 1, so that the knitted fabric of the application is obtained, and the details are shown in Table 1.

[0077] Example 9:

[0078] The A yarn is selected as the surface yarn, and all of them are 70 dtex / 12 f island composite fibers (the sea component is co-PET, and the island component is PET / PET), and the rest is the same as in Example 1, so that the knitted fabric of the application is obtained, and the details are shown in Table 2.

[0079] Example 10:

[0080] The B yarn is used as the lining yarn, and the length of the B yarn is 209 mm / 100 loops, so that a fabric with a density of 33 w / inch*73 c / inch is obtained, and the rest is the same as in Example 1, so that the knitted fabric of the application is obtained, and the details are shown in Table 2.

[0081] Example 11:

[0082] The flat knitting plating stitch is used for knitting on a 36G single-sided circular knitting machine. The A yarn is selected as the surface yarn, and the B yarn is selected as the lining yarn, wherein the B yarn is all 30 dtex / 24 f ordinary PET DTY (melting enthalpy is 47 J / g), the length of the A yarn is 225 mm / 100 loops, and the length of the B yarn is 219 mm / 100 loops, and the rest is the same as in Example 1, so that the knitted fabric of the application is obtained, and the details are shown in Table 2.

[0083] Example 12:

[0084] The lining yarn is B yarn, the length of the B yarn is 210mm / 100 loops, and a gray fabric with a density of 31w / inch*72c / inch is obtained, and the rest is the same as in Example 1, and the knitted fabric is obtained, as shown in Table 2.

[0085] Example 13:

[0086] Two kinds of yarns are selected as lining yarn 1 and lining yarn 2. The lining yarn 1 is B yarn, and the B yarn is 33dtex / 12f PET FDY (melting enthalpy is 34J / g), and the lining yarn 2 is C yarn, and the C yarn is 30dtex / 36f ordinary PET DTY, and the rest is the same as in Example 1, and the knitted fabric is obtained, as shown in Table 2.

[0087] Example 14:

[0088] The lining yarn is B yarn, the length of the B yarn is 230mm / 100 loops, and a gray fabric with a density of 33w / inch*48c / inch is obtained, and the rest is the same as in Example 1, and the knitted fabric of the application is obtained, as shown in Table 2.

[0089] Example 15:

[0090] On a 32G single-sided warp knitting machine, GB1 is selected as A yarn and GB2 is selected as B yarn, and the rest is the same as in Example 1, and the knitted fabric of the application is obtained, as shown in Table 2.

[0091] Example 16:

[0092] On a 32G double-sided circular knitting machine, cotton hair organization is used for knitting, and the top yarn is selected as A yarn and the lining yarn is selected as B yarn, and the rest is the same as in Example 1, and the knitted fabric of the application is obtained, as shown in Table 2.

[0093] Example 17

[0094] The face yarns are selected from two yarns, namely face yarn 1 and face yarn 2. Face yarn 1 is selected as A yarn, the inside yarn is B yarn, and face yarn 2 is C yarn. Ten routes are one cycle, wherein routes 1-9 are A yarn, all of which are 42 dtex / 12 f island composite fibers (sea component is co-PET, island is PBT / PET), and route 10 is C yarn, which is 30 dtex / 36 f ordinary PET DTY (fusion enthalpy is 55 J / g). The rest is the same as in Example 1 to obtain the knitted fabric of the application. See Table 3 for details.

[0095] Example 18

[0096] The face yarns are selected from two yarns, namely face yarn 1 and face yarn 2. Face yarn 1 is selected as A yarn, the inside yarn is B yarn, and face yarn 2 is C yarn. Ten routes are one cycle, wherein odd routes are A yarn, all of which are 42 dtex / 12 f island composite fibers (sea component is co-PET, island is PBT / PET), and even routes are C yarn, which is 30 dtex / 36 f ordinary PET DTY (fusion enthalpy is 55 J / g). The rest is the same as in Example 1 to obtain the knitted fabric of the application. See Table 3 for details.

[0097] Comparative Example 1

[0098] The face yarn is A yarn, and the A yarn is all 56 dtex / 48 f PBT / PET DTY. The A yarn length is 218 mm / 100 coils, and a gray fabric with a density of 33 w / inch*63 / inch is obtained. The rest is the same as in Example 1 to obtain the knitted fabric. See Table 3 for details.

[0099] Comparative Example 2

[0100] The face yarn is A yarn, and the inside yarn is B yarn. The A yarn is all 30 dtex / 288 f PET DTY, and the B yarn length is 210 mm / 100 coils. A gray fabric with a density of 36 w / inch*70 c / inch is obtained. The rest is the same as in Example 1 to obtain the knitted fabric. See Table 3 for details.

[0101] Comparative Example 3

[0102] The face yarns are selected from two yarns, namely face yarn 1 and face yarn 2. Face yarn 1 is selected as A yarn, and face yarn 2 is C yarn. Ten routes are one cycle, wherein routes 1-3 are A yarn: 42 dtex / 12 f island composite fibers, and routes 4-10 are C yarn: 30 dtex / 36 f ordinary PET DTY (fusion enthalpy is 55 J / g). A gray fabric with a density of 33 w / inch*68 c / inch is obtained. The rest is the same as in Example 1 to obtain the knitted fabric. See Table 3 for details.

[0103] Comparative Example 4:

[0104] The face yarn was A yarn and the ground yarn was B yarn, the linear length of A yarn was 200mm / 100 loops, the linear length of B yarn was 187mm / 100 loops, no pre-shrinking and intermediate setting was performed, and the rest was the same as Example 1 to obtain a knitted fabric, which was shown in Table 3.

[0105] Comparative Example 5:

[0106] The ground yarn was B yarn, the linear length of B yarn was 210mm / 100 loops, a grey fabric with a density of 31w / inch*72c / inch was obtained, then the fabric was subjected to weight reduction, intermediate setting (190℃*60s), dyeing, post-finishing setting, and no pre-shrinking was performed, and the rest was the same as Example 1 to obtain a knitted fabric, which was shown in Table 3.

[0107] According to Table 1, Table 2 and Table 3,

[0108] (1) According to Example 1 and Example 2, under the same conditions, the knitted fabric with A yarn content of 100% on the A yarn surface was compared with the knitted fabric with A yarn content of 70% on the A yarn surface, and the two had the same bone feeling (the same draping coefficient), the former was better than the latter in elasticity recovery (high elasticity recovery rate) and fabric fineness (low average dynamic friction coefficient).

[0109] (2) According to Example 2 and Example 18, under the same conditions, the knitted fabric with A yarn content of 70% on the A yarn surface was compared with the knitted fabric with A yarn content of 50% on the A yarn surface, and the two had the same bone feeling (the same draping coefficient), the former was better than the latter in elasticity recovery (high elasticity recovery rate) and fabric fineness (low average dynamic friction coefficient).

[0110] (3) According to Example 3 and Example 4, under the same conditions, the knitted fabric with T B / T A of 11.5 was compared with the knitted fabric with T B / T A of 8.3, and the former was better than the latter in elasticity recovery (high elasticity recovery rate), bone feeling (high draping coefficient) and fabric fineness (low average dynamic friction coefficient).

[0111] (4) According to Example 1 and Example 5, under the same conditions, the knitted fabric with L A / L B of 1.27 was compared with the knitted fabric with L A / L BCompared with the fabric having a fabric weight of 1.00, the former has higher elastic recovery, higher drape and lower average dynamic coefficient of friction.

[0112] (5) As can be seen from Example 5 and Example 14, under the same conditions, the fabric made of L A / L B Compared with the fabric having a fabric weight of 1.00, the former has higher elastic recovery, higher drape and lower average dynamic coefficient of friction. A / L B Compared with the fabric having a fabric weight of 1.00, the former has higher elastic recovery, higher drape and lower average dynamic coefficient of friction.

[0113] (6) As can be seen from Example 10 and Example 6, under the same conditions, the fabric made of L A / L B Compared with the fabric having a fabric weight of 1.00, the former has higher elastic recovery, higher drape and lower average dynamic coefficient of friction. A / L B Compared with the fabric having a fabric weight of 1.00, the former has higher elastic recovery, higher drape and lower average dynamic coefficient of friction.

[0114] (7) As can be seen from Example 11 and Example 7, compared with the fabric made of yarn B having a melting enthalpy of 47 J / g, the fabric made of yarn B having a melting enthalpy of 40 J / g has higher elastic recovery, higher drape and lower average dynamic coefficient of friction.

[0115] (8) As can be seen from Comparative Example 1 and Example 1, under the same conditions, the fabric made of A yarn having a single filament fineness of 1.20 dtex has the same longitudinal elastic recovery as the fabric made of A yarn having a single filament fineness of 0.12 dtex, the former has slightly higher transverse elastic recovery than the latter, but has lower drape, i.e. slightly lower bone sense than the latter, and has a very high average dynamic coefficient of friction, i.e. poor fabric feel.

[0116] (9) As can be seen from Comparative Example 2 and Example 1, under the same conditions, the fabric made of A yarn as a super fine PET single component fiber has higher elastic recovery than the fabric made of A yarn as a super fine PBT / PET double component composite fiber, but has poorer fabric feel and drape than the latter.

[0117] (10) From Comparative Example 3 and Example 2, under the same conditions, the fabric with 30% A yarn content on the A yarn plane has the same longitudinal elastic recovery as the fabric with 70% A yarn content on the A yarn plane, the former has slightly better transverse elastic recovery than the latter but poor drape (low draping coefficient) and insufficient fabric smoothness (high average dynamic friction coefficient).

[0118] (11) From Comparative Example 4 and Example 1, under the same conditions, the fabric with E A / E B = 0.5 has poorer elastic recovery (low elastic recovery rate), drape (low draping coefficient) and fabric smoothness than the fabric with E A / E B = 1.2.

[0119] (12) From Comparative Example 5 and Example 12, under the same conditions, the fabric with E A / E B = 2.5 has poorer elastic recovery (low elastic recovery rate) than the fabric with E A / E B = 2.0, although the former has better drape (high draping coefficient) and fabric smoothness (low average dynamic friction coefficient) than the latter.

Claims

Knitted fabric, characterized in that The knitted fabric contains at least A yarn and B yarn, the A yarn being ultrafine bi-component fiber having a single yarn fineness of 0.20 dtex or less, the content of the A yarn in at least one of the faces in which the A yarn is present being W A The elastic elongation E of the A yarn in the knitted fabric is 50% or more A The elastic elongation E of the B yarn is 50% or more B The following relationship is satisfied: 1.0 < E A / E B ≤ 2.

0. The knit fabric according to claim 1, characterized in that: The B yarn has a melting enthalpy of 40 J / g or less. The knitted fabric according to claim 1 or 2, characterized in that: the linear length L of the A yarn A the linear length L of the B yarn B satisfies the following relationship: 1.00 < L A / L B ≤ 2.

00. The knitted fabric according to claim 1 or 2, characterized in that: The knitted fabric has a transverse elastic recovery rate of 60% or more and a longitudinal elastic recovery rate of 80% or more. The knitted fabric according to claim 1 or 2, characterized in that: The knitted fabric has a drape coefficient of 8.0% or more. The knitted fabric according to claim 1 or 2, characterized in that: The surface average dynamic friction coefficient of the surface where the A yarn is present is 0.40 or less.