Weft-knitted double-sided knitted fabric and preparation method thereof

Abstract

The invention discloses a preparation method of a weft-knitted double-sided knitted fabric, the weft-knitted double-sided knitted fabric comprises a fabric with a weft-knitted double-sided structure with a front surface and a back surface, the front surface and the back surface of the fabric are knitted into a plurality of loops through yarns, and the loops are provided with needle knitting arcs, loop columns and sinker arcs; coils on the front face and / or the back face of the fabric are woven through first elastic yarn, second elastic yarn and non-elastic yarn, the first elastic yarn and the non-elastic yarn are looped on an upper needle dial and a lower needle cylinder of a knitting machine, and the second elastic yarn is only looped on the front face or the back face of the fabric. The first elastic yarn and the second elastic yarn exist at the needle knitting arcs and the loop columns of the loops on the front face or the back face of the fabric, the friction force and the cohesive force between the non-elastic yarn and the elastic yarn are enhanced due to the existence of the double-strand elastic yarn, and the second elastic yarn applies a weft-direction pulling force at the joints of the loop columns and the sinker arcs. According to the garment, the fabric is more compact, not prone to loosening and capable of being cut at will, and the fabric is endowed with higher elasticity and higher resilience.

Description

Technical Field

[0001] The invention belongs to the technical field of textile fabrics, in particular to a weft-knitted double-sided fabric and a preparation method thereof. Background Art

[0002] With the vigorous development of national fitness activities, people's life concepts have changed dramatically. In cities large and small, consumption for health has become a fashion to improve the quality of life. In contrast, people are paying more and more attention to the wearing performance of sports fabrics, and have put forward higher requirements for recovery, comfort and other aspects.

[0003] Patent CN215328603U provides a design and implementation method for a weft-knitted double-sided fabric with high recovery, high bulkiness and high softness. Although this method achieves high elasticity and large opening, due to the presence of the inelastic surface, the fabric of this structure is easy to fall apart in the opposite direction of weaving, and one side of the inelastic yarn is easy to snag and pill, which will cause various inconveniences in actual production and use.

[0004] Patent CN101357005A provides a design and implementation method for weft knitted fabrics that achieve anti-fraying effect by using heat-fusible elastic yarn. However, this method requires the use of heat-fusible elastic yarn, which is costly, and the heat-fusible performance is unstable. The high-temperature processing of the heat-fusible elastic yarn will also cause a great loss of elasticity of the elastic yarn.

[0005] Therefore, there is a great market demand for a fabric that has a tight feel, is not easy to fall apart, and has high elasticity and a large opening. Summary of the invention

[0006] In order to solve the above technical problems, the present invention provides a weft-knitted double-sided fabric and a preparation method thereof.

[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0008] A method for preparing a weft-knitted double-sided fabric comprises the following steps:

[0009] The invention comprises a weft-knitted double-sided fabric with a front side and a back side, wherein the front side and the back side of the fabric are both woven by yarn to form a plurality of loops, and the loops have needle loops, loop columns and sinker loops;

[0010] The loops on the front and / or back of the fabric are woven by the first elastic yarn, the second elastic yarn and the inelastic yarn, and the first elastic yarn and the inelastic yarn are both looped on the upper needle plate and the lower needle cylinder of the knitting machine, and the second elastic yarn is looped only on the front or back of the fabric. The first elastic yarn and the second elastic yarn exist at the needle knitting loop and the loop column of the loops on the front or back of the fabric, and the first elastic yarn and the second elastic yarn form a double-strand elastic yarn. The existence of the double-strand elastic yarn enhances the friction and the cohesive force between the inelastic yarn and the elastic yarn, and the second elastic yarn exerts a weft-direction pulling force at the intersection of the loop column and the sinker loop.

[0011] As a further solution, at least one of the first elastic yarn, the second elastic yarn and the inelastic yarn is provided.

[0012] As a further solution, the elastic force and thickness of the first elastic yarn and the second elastic yarn are the same or different.

[0013] As a further solution, the fabric is a weft-knitted single rib structure or a weft-knitted double rib structure.

[0014] As a further solution, a single-sided woven non-elastic yarn is added to the fabric, and the single-sided woven non-elastic yarn is looped only on one side of the fabric.

[0015] As a further solution, the non-elastic yarn is a long fiber with a denier of 10D-200D, preferably 20D-150D.

[0016] As a further solution, the non-elastic yarn is a staple yarn with a count of 8S-200S, preferably 20S-120S.

[0017] As a further solution, the first elastic yarn and the second elastic yarn are both polyurethane elastic fibers with a denier of 10D-200D, preferably 20D-105D.

[0018] As a further solution, the knitting machine used for the fabric is a weft knitting circular machine, and the machine model is E16-E60.

[0019] A weft-knitted double-sided fabric is prepared by using the above-mentioned preparation method.

[0020] Compared with the prior art, the present invention has the following beneficial technical effects:

[0021] By weaving elastic yarn and non-elastic yarn on different sides, tension is formed in the weft direction, making the fabric tighter and less likely to fall apart. It can be cut at will, and gives the fabric higher elasticity and stronger recovery, with good recovery and comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the complete weaving state of the flower paper of Example 1;

[0023] Figure 2 This is a schematic diagram of the complete flower paper weaving state of Example 2;

[0024] Figure 3 This is a schematic diagram of the complete flower paper weaving state of Example 3;

[0025] Figure 4 This is a schematic diagram of the coil structure. DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0027] In the description of the present invention, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like are involved, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. It can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] A method for preparing a weft-knitted double-sided fabric comprises the following steps:

[0030] refer to Figure 4 As shown, it comprises a weft-knitted double-sided fabric with a front side and a back side, the front side and the back side of the fabric are both woven by yarn to form a plurality of loops, and the loops have a needle knitting loop 1, a loop column 2 and a sinker loop 3;

[0031] The coils on the front side of the fabric are woven by a first elastic yarn, a second elastic yarn and a non-elastic yarn, and the first elastic yarn and the non-elastic yarn are both looped on the upper needle plate and the lower needle cylinder of the knitting machine, i.e., they are both looped at two positions, and the second elastic yarn is only looped on the front side of the fabric, i.e., it is only looped at one position, usually the upper needle plate, so that the coils on the front side of the fabric have the first elastic yarn and the second elastic yarn at the needle knitting arc and the coil column. The presence of the two-strand elastic yarn enhances the friction and the holding force between the non-elastic yarn and the elastic yarn. At the same time, the second elastic yarn exerts a weft pulling force at the intersection of the coil column and the settlement arc of the coil to form a pulling force, so that the fabric is tighter, not easy to fall apart, can be cut arbitrarily, and gives the fabric higher elasticity and stronger recovery.

[0032] During the specific weaving, the knitting machine is controlled so that the first elastic yarn and the non-elastic yarn are woven together, while the second elastic yarn is woven into loops on one side of the fabric alone.

[0033] The anti-unraveling performance is improved by weaving two elastic yarns and one inelastic yarn alternately and combining them with each other. When weaving into loops, since the first elastic yarn and the inelastic yarn are both woven together to form upper and lower loops, and the second elastic yarn is looped only on one side, the second elastic yarn will overlap with one of the loops of the first elastic yarn and the inelastic yarn, and the mutual pulling between different yarns is used to improve the overall anti-unraveling performance.

[0034] The elastic force and thickness of the first elastic yarn and the second elastic yarn are the same or different, and a plurality of the first elastic yarn and the second elastic yarn can be provided, and a plurality of the inelastic yarn can also be provided.

[0035] In addition, a single-sided woven non-elastic yarn may be added to the fabric, and the single-sided woven non-elastic yarn is looped only on one side of the fabric.

[0036] The fabric is a weft-knitted single rib structure or a weft-knitted double rib structure.

[0037] The non-elastic yarn is a long fiber with a denier of 10D-200D, preferably 20D-150D; or the non-elastic yarn is a short fiber with a count of 8S-200S, preferably 20S-120S. The first elastic yarn and the second elastic yarn are both polyurethane elastic fibers or other types of elastic fibers, with a denier of 10D-200D, preferably 20D-105D.

[0038] The knitting machine used for the fabric is a weft knitting circular knitting machine, and the machine model is E16-E60, and can be further selected as E28-E60.

[0039] The following is further explained with a production example. The first elastic yarn is defined as elastic yarn A, the second elastic yarn is defined as elastic yarn B, and the inelastic yarn is defined as inelastic yarn C and inelastic yarn D as required.

[0040] Embodiment 1:

[0041] 1. Yarn selection: Elastic yarn A uses non-thermal fusion ordinary spandex PU 20D, elastic yarn B uses non-thermal fusion ordinary spandex PU 30D, and non-elastic yarn C uses ordinary PA6640D / 51F FD DTY.

[0042] 2. Machine model selection: weft knitting double-sided machine, 40G, 34 inches.

[0043] 3. Weaving process: The non-elastic yarn C adopts weft knitting double rib weaving method, the yarn length is 24cm / 100G, the elastic yarn A adopts the added yarn structure to follow the non-elastic yarn C, the yarn length is 8.5cm / 100G, and the elastic yarn B is only looped on the upper needle plate, the yarn length is 6cm / 100G.

[0044] 4. Weaving flower paper diagram, reference Figure 1 shown.

[0045] 5. Dyeing and finishing process: pre-dyeing - overflow dyeing - dehydration - finishing.

[0046] 6. Finished product parameters: 165cm*230gsm.

[0047] 7. Tested using the LTD03 method, the results are as follows:

[0048] Test items Test Results Elongation(Length) 103％ Elongation (Width) 190％ Recovery(Length) recovery rate 94％ Recovery(Width) latitudinal recovery rate 92％ Freecut Pass

[0049] Embodiment 2:

[0050] 1. Yarn selection: Elastic yarn A uses non-thermal fusion ordinary spandex PU 40D, elastic yarn B uses non-thermal fusion ordinary spandex PU 30D, and non-elastic yarn C uses ordinary PA6 / PES 60D / 48F / SDRB DTY / FDY.

[0051] 2. Machine model selection: weft knitting double-sided machine, 32G, 34 inches.

[0052] 3. Weaving process: The non-elastic yarn C adopts weft ribbing, with a yarn length of 23cm / 50G. The elastic yarn A adopts a filling yarn structure to follow the non-elastic yarn C, with a yarn length of 8cm / 50G. The elastic yarn B is only looped on the upper needle plate, with a yarn length of 6cm / 50G.

[0053] 4. Weaving flower paper diagram, reference Figure 2 shown.

[0054] 5. Dyeing and finishing process: pre-dyeing - overflow dyeing - dehydration - finishing.

[0055] 6. Finished product parameters: 150cm*240gsm.

[0056] 7. Tested using the LTD03 method, the results are as follows:

[0057]

[0058]

[0059] Embodiment three:

[0060] 1. Yarn selection: Elastic yarn A uses non-thermal fusion ordinary spandex PU 20D, elastic yarn B uses non-thermal fusion ordinary spandex PU 30D, non-elastic yarn C uses ordinary PA6640D / 51F FD DTY, and non-elastic yarn D uses ordinary PA620D / 24F FD DTY.

[0061] 2. Machine model selection: weft knitting double-sided machine, 40G, 34 inches.

[0062] 3. Weaving process: The non-elastic yarn C adopts weft knitting double rib weaving method, with a yarn length of 24cm / 100G. The elastic yarn A adopts a plated yarn structure to follow the non-elastic yarn C, with a yarn length of 8.5cm / 100G. The non-elastic yarn D is only looped on the upper needle plate with alternate needles, with a yarn length of 18cm / 100G. The elastic yarn B adopts a plated yarn structure to follow the non-elastic yarn D, with a yarn length of 5.5cm / 100G.

[0063] 4. Woven flower paper, reference Figure 3 shown.

[0064] 5. Dyeing and finishing process: pre-dyeing - overflow dyeing - dehydration - finishing.

[0065] 6. Finished product parameters: 150cm*250gsm.

[0066] 7. Tested using the LTD03 method, the results are as follows:

[0067] Test items Test Results Elongation(Length) 95％ Elongation (Width) 150％ Recovery(Length) recovery rate 97％ Recovery(Width) latitudinal recovery rate 95％ Freecut Pass

[0068] After testing, the anti-permeability performance of this fabric is good.

[0069] It should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. However, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for preparing a weft-knitted double-sided fabric, characterized in that: The following steps are involved: The invention comprises a weft-knitted double-sided fabric with a front side and a back side, wherein the front side and the back side of the fabric are both woven by yarn to form a plurality of loops, and the loops have needle loops, loop columns and sinker loops; The loops on the front and / or back of the fabric are woven by the first elastic yarn, the second elastic yarn and the inelastic yarn, and the first elastic yarn and the inelastic yarn are both looped on the upper needle plate and the lower needle cylinder of the knitting machine, and the second elastic yarn is looped only on the front or back of the fabric. The first elastic yarn and the second elastic yarn exist at the needle knitting loop and the loop column of the loops on the front or back of the fabric, and the first elastic yarn and the second elastic yarn form a double-strand elastic yarn. The existence of the double-strand elastic yarn enhances the friction and the cohesive force between the inelastic yarn and the elastic yarn, and the second elastic yarn exerts a weft-direction pulling force at the intersection of the loop column and the sinker loop.

2. The method for preparing a weft-knitted double-sided fabric according to claim 1, characterized in that: At least one of the first elastic yarn, the second elastic yarn and the inelastic yarn is provided.

3. The method for preparing a weft-knitted double-sided fabric according to claim 1, characterized in that: The elastic force and thickness of the first elastic yarn and the second elastic yarn are the same or different.

4. The method for preparing a weft-knitted double-sided fabric according to claim 1, characterized in that: The fabric is a weft-knitted single rib structure or a weft-knitted double rib structure.

5. The method for preparing a weft-knitted double-sided fabric according to claim 1, characterized in that: The fabric is further added with a single-sided woven non-elastic yarn, which is looped only on one side of the fabric.

6. The method for preparing a weft-knitted double-sided fabric according to claim 1, characterized in that: The non-elastic yarn is a long fiber with a denier of 10D-200D, preferably 20D-150D.

7. The method for preparing a weft-knitted double-sided fabric according to claim 1, characterized in that: The non-elastic yarn is a short fiber with a count of 8S-200S, preferably 20S-120S.

8. The method for preparing a weft-knitted double-sided fabric according to claim 1, characterized in that: The first elastic yarn and the second elastic yarn are both polyurethane elastic fibers with a denier of 10D-200D, preferably 20D-105D.

9. The method for preparing a weft-knitted double-sided fabric according to claim 1, characterized in that: The knitting machine used for the fabric is a weft knitting circular knitting machine, and the machine model is E16-E60.

10. A weft-knitted double-sided fabric, characterized in that: It is prepared using the preparation method described in any one of claims 1 to 9.

Images