Double-sided circular knitted fabric

Abstract

The utility model provides a double-sided circular knitted fabric which has excellent elasticity and fluffiness, and is flat in surface appearance, good in smoothness or good in surface pattern effect. The double-sided circular-knitted fabric is formed by weaving long fiber and / or short fiber yarns, and is provided with a first layer, a second layer connected with the first layer in a tucking manner, and a third layer connected with the second layer in a tucking manner. The double-sided circular-knitted fabric is mainly applied to the fields of sportswear and casual clothes, and is widely used as a thermal insulation material.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of textile, specifically relates to a double-sided circular knitting fabric with excellent loftiness and elasticity, and also with a variety of design appearance and flat appearance. BACKGROUND

[0002] The double-sided circular knitting fabric is widely used as a thermal material for sports clothes and casual clothes. With the change of the market in recent years, people have higher and higher demand for the fabric with excellent loftiness and elasticity, and also with design appearance and flat appearance.

[0003] In terms of design appearance, the diversity of the pattern organization of the surface layer of the fabric is pursued, and in terms of the loftiness of the inner layer of the fabric, the length of the pile of the inner layer of the fabric is pursued.

[0004] Known document 1 Japanese patent No. 6771294 discloses a single-sided pile processing double-sided circular knitting fabric, and its loftiness, anti-pilling property and anti-snagging property are technically described, but no related description is made on elasticity and the combination of design appearance and flat appearance.

[0005] Known document 2 Chinese patent CN112921478A discloses a 5-layer structure double-sided circular knitting fabric, and its loftiness, thermal property and anti-pilling property are technically described, but no related description is made on elasticity and the diversity of the pattern organization. UTILITY MODEL CONTENT

[0006] The utility model aims at providing a double-sided circular knitting fabric with excellent loftiness and elasticity, and also with a variety of design appearance and flat appearance.

[0007] The present inventors have conducted in-depth research and repeated experiments to solve the above-mentioned problems, and as a result, it has been found that the problems can be solved by the following structure, thereby completing the utility model.

[0008] The technical solution of the utility model is as follows:

[0009] A double-sided circular knitting fabric is knitted by long fiber and / or short fiber yarn, characterized in that the double-sided circular knitting fabric has a first layer, a second layer connected to the first layer in a tuck stitch, and a third layer connected to the second layer in a tuck stitch and presented in a rib stitch form, and the second layer is a connecting layer of the first layer and the third layer.

[0010] Preferably, the third layer is a pile layer.

[0011] Preferably, the total fineness of the yarn of the second layer is 1.0 times or less of the total fineness of the yarn of the first layer.

[0012] Preferably, the bulkiness value of the double circular knitted fabric is 4.5 cm 3 / g or more.

[0013] Preferably, the number of loops of the third layer within the minimum stitch cycle of the first layer is 2 or less.

[0014] Preferably, the yarn constituting the first layer and / or the yarn constituting the second layer contains an elastic yarn.

[0015] Preferably, the elastic yarn is a covered yarn with a polyurethane elastic fiber as a core yarn.

[0016] Preferably, the sum of the longitudinal and transverse fabric elongations of the double circular knitted fabric is 130% or more.

[0017] Preferably, the circular knitting stitch constituting the first layer is a plain stitch.

[0018] Preferably, the circular knitting stitch constituting the first layer contains a float stitch and / or a tuck stitch.

[0019] The double circular knitted fabric of the present application, through the selection of yarns and the stitch structure, obtains a double circular knitted fabric having excellent bulkiness and elasticity, and also having a multi-design appearance and a flat appearance. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 The stitch diagrams and yarn lists of the present application examples 1 and 2 are shown.

[0021] Figure 2 The stitch diagrams and yarn lists of the present application examples 3 and 4 are shown.

[0022] Figure 3 The stitch diagrams and yarn lists of the present application example 5 are shown.

[0023] Figure 4 The stitch diagrams and yarn lists of the comparative examples 1 and 2 are shown.

[0024] Figure 5 The stitch diagrams and yarn lists of the comparative examples 3 and 4 are shown.

[0025] In the stitch diagrams of Figure 1 , Figure 2 and Figure 3 , although there is no tuck symbol on the second layer, the second layer is actually connected to the first layer in a tuck manner. DETAILED DESCRIPTION

[0026] The long fibers used in the present application can be listed as synthetic fibers or semi-synthetic fibers such as polyester long fibers, polyamide long fibers, acrylic long fibers, viscose long fibers, etc.

[0027] In addition, the long fiber can also be a crimped yarn obtained by false twist processing, a blended yarn obtained by blending processing, a covered yarn obtained by covering processing, or a cabled yarn obtained by cabling processing.

[0028] In addition, the long fiber can also be a regenerated fiber, or a bio-based fiber derived from a biological raw material.

[0029] The short fiber yarn used in the utility model can be listed as polyester short fiber spinning yarn, polyamide short fiber spinning yarn, acrylic short fiber spinning yarn, viscose short fiber spinning yarn, cotton yarn, bamboo fiber spinning yarn, Tencel short fiber spinning yarn, Lyocell short fiber spinning yarn, wool, silk and other natural fibers or animal fibers.

[0030] In addition, the short fiber yarn can also be a short fiber yarn obtained by blending processing or cabling processing between the short fibers and the short fibers.

[0031] In addition, the short fiber yarn can also be a long-short composite yarn obtained by composite spinning processing using the short fibers and the long fibers.

[0032] The round knitting fabric of the utility model, specifically, forms a multi-layer structure, for example, the round knitting fabric has a first layer, a second layer connected to the first layer in a tuck manner, and a third layer connected to the second layer in a tuck manner and presented in a rib stitch form, and the second layer is a connecting layer of the first layer and the third layer.

[0033] The utility model discloses a double-sided round knitting fabric, preferably the third layer is a raised layer. The yarn in the rib stitch form in the third layer is the yarn raised in the later period. If the yarn in the rib stitch form is directly connected to the first layer in a tuck manner, in order to make the fabric have better bulkiness, generally, thicker yarn and longer knitting length need to be selected, which will cause the connecting yarn to be exposed from the loop gap of the first layer, resulting in the deterioration of the physical properties such as pilling and snagging of the knitted fabric.

[0034] Therefore, the double-sided round knitting fabric of the utility model designs the second layer yarn connected to the first layer and the yarn presented in the rib stitch form (the third layer) in a tuck manner, that is, the second layer is connected to the first layer in a tuck manner, and the third layer is connected to the second layer in a tuck manner. Even if thicker yarn and longer loop length are used for the yarn in the rib stitch form to improve the bulkiness, the problem of the decrease of the anti-pilling and anti-snagging properties of the fabric due to the non-direct connection structure of the third layer and the first layer can be avoided, and the fabric can have better bulkiness.

[0035] In addition, the double circular knitted fabric having a multi-layer structure is preferably such that the total yarn fineness of the yarn in the second layer is 1.0 times or less of the total yarn fineness of the yarn in the first layer. If the yarn in the second layer is thicker than the yarn in the first layer by more than 1.0 times, there is a tendency for the yarn in the second layer to protrude from the loops in the first layer when connected to the loops in the first layer. More preferably, the total yarn fineness of the yarn in the second layer is 0.7 times or less of the total yarn fineness of the yarn in the first layer, so that the yarn in the second layer connected to the loops in the first layer is more easily hidden by the yarn in the first layer and does not protrude.

[0036] In addition, the double circular knitted fabric having a multi-layer structure is preferably such that the bulk value of the fabric is 4.5 cm / g or more, more preferably 4.8 cm / g or more. If the bulk value of the fabric is less than 4.5 cm / g, there is a tendency for the fabric to not satisfy the market demand for thermal retention performance. 3 3 In addition, the double circular knitted fabric having a multi-layer structure is preferably such that the bulk value of the fabric is 4.5 cm / g or more, more preferably 4.8 cm / g or more. If the bulk value of the fabric is less than 4.5 cm / g, there is a tendency for the fabric to not satisfy the market demand for thermal retention performance. 3

[0037] In addition, the double circular knitted fabric having a multi-layer structure is preferably such that the number of loops in the third layer in the course of the smallest stitch in the first layer is 2 or less. If the number of loops in the third layer exceeds 2, there is a tendency for the knitting efficiency to deteriorate.

[0038] In addition, the double circular knitted fabric having a multi-layer structure is preferably such that the yarn constituting the first layer contains elastic yarn, or the yarn constituting the second layer contains elastic yarn, or the yarn constituting both the first layer and the second layer contains elastic yarn.

[0039] The elastic yarn can be, but is not limited to, a covered yarn having a polyurethane elastic fiber as a core yarn.

[0040] In addition, the double circular knitted fabric having a multi-layer structure is preferably such that the sum of the elongation in the longitudinal direction and the transverse direction of the fabric is 130% or more, more preferably 250% or more. In the case where no elastic yarn is contained, there is a tendency for the loops to become loose and for the thermal retention performance of the fabric to deteriorate. In addition, in the case where the elasticity of the fabric is not high enough, depending on the design of the sewing pattern, particularly in the case of a tight-fitting garment, when the body moves, there can be a problem in that the garment does not follow the movement of the body well, the garment is not comfortable to wear, and the garment is difficult to put on and take off.

[0041] In addition, the double circular knitted fabric having a multi-layer structure is preferably such that the circular knitting stitch constituting the first layer is only a plain stitch, so that the surface of the knitted fabric is flat and has anti-pilling and anti-snagging properties.

[0042] In addition, the double circular knitted fabric having a multi-layer structure is preferably such that the circular knitting stitch constituting the first layer contains a float stitch and / or a tuck stitch in addition to a plain stitch, so that the surface of the knitted fabric exhibits a higher appearance design effect and has anti-pilling and anti-snagging properties.

[0043] ​​The double-face circular knitting fabric is mainly applied in the field of sportswear and casual wear, and is widely used as a thermal material.

[0044] The preparation method of the double-face circular knitting fabric, preferably comprises but is not limited to the following procedures.

[0045] Knitting, refining, pre-setting, dyeing (liquid flow), drying, fuzzing, softening treatment, finishing setting, softening treatment. In the dyeing process, appropriate dyes are selected according to the composition of the yarn. When reactive dyes and cationic dyes are used at the same time, 2-bath dyeing is preferred; similarly, when acid dyes and cationic dyes are used at the same time, 2-bath dyeing is also preferred.

[0046] The utility model will be further described in combination with examples and comparative examples. However, the utility model comprises but is not limited to the listed examples.

[0047] The test method of the parameters involved in the utility model is as follows:

[0048] (1) Thickness test

[0049] A PEACOCK precision testing instrument produced by Ozaki Manufacturing Co., Ltd. is used, and the unit of the equipment's micrometer is 0.01 mm. The average value is taken after 5 measurements.

[0050] (2) Fuzzing and pilling test

[0051] The test is performed according to GB / T 4802.2. The test equipment used is a YG401G Martindale abrasion tester.

[0052] (3) Hooking test

[0053] The test is performed according to GB / T 11047. The test equipment used is an SDL ATLAS MO78.

[0054] (4) Grammage test

[0055] The test is performed according to GB / T 4669. The test equipment used is an electronic scale.

[0056] (5) Loft value test

[0057] According to the data measured in the above (1) thickness and (4) grammage, the calculation is performed according to the following calculation formula.

[0058] K = H / M*1000

[0059] K: loft value (cm / g) 3

[0060] H: thickness (mm)

[0061] ​M: Weight (g / m³) 2 )

[0062] (6) Fabric elongation test

[0063] Prepare a specimen with effective dimensions of 75mm x 275mm. Mark two parallel lines on the specimen, 250mm apart, with the standard lines equidistant from both ends. Fold the specimen along its short sides, overlapping the two short sides, and sew along the marked lines to form a ring-shaped test specimen with a width of 75mm and a circumference of 250mm.

[0064] Hang the test sample between the two clamps of the tensile testing machine, ensuring the seam is in the middle of the clamps. Set the tensile force displayed on the instrument to zero, start the machine, and stretch the sample at a speed of 300 mm / min. Record the elongation value at 60 N. The longitudinal elongation of the fabric is the elongation value along the long side of the knitted loops (column direction), and the transverse elongation is the elongation value along the long side of the knitted loops (warp direction). Perform five measurements and take the average value. The tensile testing machine used is a Zwick Z0.5TH Heightening Drawing Machine (manufactured in Germany).

[0065] Example 1

[0066] Using a 32G 34-inch double-sided circular knitting machine, the first layer (outer layer) uses 70D-68F nylon 6 long-fiber false-twist yarn, the second layer (middle layer) uses 30D-12F nylon 6 long-fiber false-twist yarn, and the third layer (inner layer) uses 50D-72F cationic dyeable long-fiber false-twist yarn. The yarn lengths for each layer are: first layer 22.0cm / 100wale; second layer 13.5cm / 100wale; third layer 25.0cm / 100wale, as follows. Figure 1 The fabric of this invention is woven using the structure and yarn arrangement shown; the fabric obtained by the above weaving method is then processed according to the following steps.

[0067] Refining process: Using a spreading refining machine, temperature 130 degrees, speed 33m / min;

[0068] Pre-setting process: needle heat setting machine, temperature 190 degrees, speed 30m / min;

[0069] Dyeing process: Liquid flow dyeing machine, using reactive dyes and cationic dyes, 2-bath dyeing method;

[0070] Drying process: needle heat setting machine, temperature 130 degrees, speed 25m / min;

[0071] The finished product water absorption softening process: needle type heat setting agent machine, temperature 130 degrees, speed 25 m / min; the fabric is processed by water absorption softening in the way of dip padding, and no raising process is performed. The double-sided round knitting fabric of the utility model is obtained. See Table 1 for details.

[0072] The obtained knitted fabric has a bulkiness value of 4.5 cm 3 / g. No raising process is performed, and good bulkiness is also achieved. The sum of the elongation rates of the fabric in the longitudinal direction and the transverse direction is 143%, and good elasticity is also achieved without using elastic yarns. The appearance of the knitted fabric is excellent.

[0073] Example 2

[0074] The yarns used in the first layer (surface layer), the second layer (middle layer) and the third layer (inner layer), the knitting process and the scouring process, the pre-setting process, the dyeing process and the drying process are all the same as in Example 1. On this basis, the following process is performed:

[0075] The raising process: brush machine, speed 15 m / min.

[0076] The finished product water absorption softening process: needle type heat setting agent machine, temperature 130 degrees, speed 25 m / min; the fabric is processed by water absorption softening in the way of dip padding. The double-sided round knitting fabric of the utility model is obtained. See Table 1 for details.

[0077] The obtained knitted fabric, compared with Example 1, has improved bulkiness because of the raising process, and has a bulkiness value of 4.8 cm 3 / g. The sum of the elongation rates of the fabric in the longitudinal direction and the transverse direction is 153%, and good elasticity is also achieved without using elastic yarns. The reverse side of the knitted fabric forms a soft raising layer, and the surface appearance is excellent.

[0078] Example 3

[0079] A 28G 34-inch double-sided round knitting machine is used, the first layer (surface layer) uses a covered yarn (SCY elastic yarn), and the detailed composition is: sheath yarn 70D-68F nylon 6 long fiber false twist yarn, core yarn 20D spandex, twist 460T / M, and the stretch ratio of spandex is 2.5 times. The second layer (middle layer) and the third layer (inner layer) use the same yarns as the second layer and the third layer of Example 1, respectively. The knitting lengths of the yarns in each layer are: the first layer 27.0 cm / 100 wale; the second layer 15.0 cm / 100 wale; and the third layer 27.0 cm / 100 wale, as Figure 2The shown organization and yarn arrangement are knitted to obtain the fabric of the present application; the fabric obtained by the above knitting method is processed according to the process conditions of Example 1 without raising processing. The double-sided round knitting fabric of the present application is obtained. See Table 1 for details.

[0080] The obtained fabric, like Example 1, is not subjected to raising finishing and has good loftiness. The loftiness value is 4.7 cm 3 / g. The sum of the elongation of the fabric in the longitudinal direction and the transverse direction is 330%. Elastic yarns are used, and higher elasticity is obtained compared with Examples 1 and 2. The appearance of the fabric is excellent.

[0081] Example 4

[0082] The first layer (surface layer) uses the same SCY elastic yarns as the first layer of Example 3, and the second layer (middle layer) and the third layer (inner layer) use the same yarns as the second layer and the third layer of Example 1, respectively. The knitting process and the scouring process, the pre-setting process, the dyeing process, and the drying process are the same as Example 3. On this basis, the raising process and the finished product water absorption softening process are implemented as in Example 2, and the double-sided round knitting fabric of the present application is obtained. See Table 1 for details.

[0083] The obtained fabric, like Example 2, is subjected to raising processing, and the loftiness value is 5.2 cm 3 / g, and the loftiness is very superior. Like Example 3, because elastic yarns are used, the sum of the elongation of the fabric in the longitudinal direction and the transverse direction is 276%, and the elasticity is very superior.

[0084] The reverse side of the fabric forms a soft raised layer, and the surface appearance is excellent.

[0085] Example 5

[0086] The first layer (surface layer) uses the same SCY elastic yarns as the first layer of Example 3, and the second layer (middle layer) and the third layer (inner layer) use the same yarns as the second layer and the third layer of Example 1, respectively. The knitting process and the scouring process, the pre-setting process, the dyeing process, and the drying process are the same as Example 3. On this basis, the raising process and the finished product water absorption softening process are implemented as in Example 2, and the double-sided round knitting fabric of the present application is obtained. See Table 1 for details. Figure 3 The double-sided jacquard organization with 6 loops per row is repeatedly knitted as shown. The knitting length of each layer of yarn is: 27.0 cm / 100 wale for the first layer, 15.0 cm / 100 wale for the second layer, and 27.0 cm / 100 wale for the third layer. The yarns forming the pattern are the same as the third layer yarns, and the knitting length is 31.0 cm / 100 wale. The fabric of the present application is obtained; the scouring process, the pre-setting process, the dyeing process, and the drying process are the same as Example 1. On this basis, the raising process and the finished product water absorption softening process are the same as Example 2. The double-sided round knitting fabric of the present application is obtained. See Table 1 for details.

[0087] The obtained knitted fabric, like that of Example 2, Example 4, had a bulkiness value of 5.9 cm 3 / g, and had very good bulkiness. Like Example 3, Example 4, because the elastic yarn was used, the sum of the elongation of the fabric in the longitudinal direction and the transverse direction was 236%, and the elasticity was very high, and was superior. The reverse side of the knitted fabric formed a soft pile layer, and the surface appearance had a pattern feeling, and the appearance design was excellent.

[0088] Comparative Example 1

[0089] Comparative Example 1 was a two-layer structure without the second layer (middle layer) (i.e., only the two-layer structure of the first layer and the third layer of the examples), and was a two-layer structure in which the first layer (top layer) and the third layer (back layer) were directly connected.

[0090] A 32G 34-inch double circular knitting machine was used, and the first layer (top layer) was the same as the first layer (top layer) of Example 1, 2, and used 70D-68F nylon 6 long fiber false twist yarn. The second layer (back layer) used the same 50D-72F cationic dyeable long fiber false twist yarn as the third layer (back layer) of Example 1-5. The knitting length of each layer of yarn was 22.0 cm / 100 wale for the first layer and 26.0 cm / 100 wale for the second layer. Knitting was performed using the two-layer structure of the plain stitch and the yarn arrangement as shown in Table 1. Figure 4 The fabric was obtained. The same processing procedure as Example 1 was taken, and no pile processing was performed. The knitted fabric was obtained. See Table 1 for details.

[0091] The obtained knitted fabric had a bulkiness value of 4.2 cm 3 / g, which was lower than that of Example 1, 3, which had no pile processing. In terms of elasticity, the sum of the elongation of the fabric in the longitudinal direction and the transverse direction was 161%, which was the same level as Example 1, which also used no elastic yarn. At the same time, the fabric had good smoothness in appearance.

[0092] Comparative Example 2

[0093] Comparative Example 2 was knitted using the same knitting machine as Comparative Example 1, and the same processing procedure as Example 1-5 was taken. On this basis, like Example 2, the pile processing and the finished product water absorption softening processing were performed, and the knitted fabric was obtained. See Table 1 for details.

[0094] The obtained knitted fabric had a bulkiness value of 4.4 cm 3 / g, which was lower than that of Example 2, 4, 5. In terms of elasticity, the sum of the elongation of the fabric in the longitudinal direction and the transverse direction was 162%, which was the same level as Example 1, which used no elastic yarn, and Example 2. On the other hand, the fabric had good smoothness in appearance.

[0095] Comparative Example 3

[0096] Comparative Example 3, like Comparative Example 1 and Comparative Example 2, is a two-layer structure without the second layer (intermediate layer) (i.e. only the two-layer structure of the first layer and the third layer of the embodiment), which is formed by directly connecting the first layer (surface layer) and the third layer (inner layer).

[0097] The elastic yarn (SCY yarn) used in the first layer (surface layer) is the same as the yarn used in the first layer (surface layer) of Examples 3-5; the yarn used in the second layer (inner layer) is the same as the yarn used in the third layer (inner layer) of Examples 1-5, which is a 50D-72F cationic dyeable long fiber false twist yarn. The knitting length of the yarn of each layer is 26.0 cm / 100 wale for the first layer and 27.0 cm / 100 wale for the second layer, respectively. Knitting is performed using the two-layer structure flat knitting and yarn arrangement as shown in Table 1. Figure 5 Comparative Example 3 is knitted using the same knitting machine as Example 3 and the same post-dyeing finishing process as Examples 1-5. However, no raising process is performed. A knitted fabric is obtained. See Table 1 for details.

[0098] The obtained knitted fabric has a bulkiness value of 3.8 cm 3 / g. Compared with Examples 1 and 3, which also do not perform the raising process, the bulkiness value is low. In terms of elasticity, the sum of the elongation of the fabric in the longitudinal and transverse directions is 253%, which is also relatively high compared with Examples 3, 4, and 5 using elastic yarn in the surface layer. The appearance of the fabric is smooth.

[0099] Comparative Example 4

[0100] Comparative Example 4 is knitted using the same knitting machine as Comparative Example 3 and the same post-dyeing finishing process as Examples 1-5. On this basis, like Example 2, the raising process and the finished product water absorption softening process are performed to obtain a knitted fabric. See Table 1 for details.

[0101] The obtained knitted fabric has a bulkiness value of 4.2 cm 3 / g. Compared with Examples 2, 4, and 5, which also perform the raising process, the bulkiness value is low. In terms of elasticity, the sum of the elongation of the fabric in the longitudinal and transverse directions is 263%, which is also relatively high compared with Examples 3, 4, and 5 using elastic yarn in the surface layer. The appearance of the fabric is smooth.

[0102]

Claims

1. A double-sided circular knitted fabric, woven from long and / or short fiber yarns, characterized by: Double-sided circular knit fabric has a first layer, a second layer connected to the first layer in a tucked manner, and a third layer connected to the second layer in a tucked manner and presented in a ribbed loop form. The second layer is the connecting layer between the first layer and the third layer.

2. The double-sided circular knitted fabric according to claim 1, characterized in that: The third layer is the napped layer.

3. The double-sided circular knitted fabric according to claim 1 or 2, characterized in that: The total fineness of the second layer of yarn is less than 1.0 times that of the first layer of yarn.

4. The double-sided circular knitted fabric according to claim 1 or 2, characterized in that: The loft value of double-sided circular knit fabric is 4.5cm. 3 / g or more.

5. The double-sided circular knitted fabric according to claim 1 or 2, characterized in that: Within the coil row of the smallest organized loop in the first layer, the number of coils in the third layer is two or less.

6. The double-sided circular knitted fabric according to claim 1 or 2, characterized in that: The yarns constituting the first layer and / or the yarns constituting the second layer contain elastic yarns.

7. The double-sided circular knitted fabric according to claim 6, characterized in that: The elastic yarn is a covered yarn with polyurethane elastic fiber as the core yarn.

8. The double-sided circular knitted fabric according to claim 1 or 2, characterized in that: The sum of the longitudinal and transverse elongation of double-sided circular knitted fabrics is over 130%.

9. The double-sided circular knitted fabric according to claim 1 or 2, characterized in that: The circular knitting structure that makes up the first layer is a plain weave.

10. The double-sided circular knitted fabric according to claim 1 or 2, characterized in that: The circular knitting structure that makes up the first layer includes float stitch and / or tuck stitch.

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