Knitted fabric capable of being freely cut and preparation method

Abstract

The invention relates to the field of knitted fabrics, and provides a freely-tailorable knitted fabric and a preparation method thereof.The freely-tailorable knitted fabric is of a double-face weft knitting air layer tissue structure, and the knitting pattern of the freely-tailorable knitted fabric takes six-way patterns as a cycle; the six paths of patterns are as follows: the first path is floating threads, tucking, tucking and floating threads; the second path and the fifth path are loops, loops, floating threads and floating threads; the third path and the sixth path are floating threads, floating threads, looping and looping; and the fourth path is tucking, floating thread, floating thread and tucking. Compared with the prior art, the knitted fabric capable of being freely tailored has the advantages that the hemming property, the raveling property and the line falling property of the fabric are greatly improved through mutual association and combined action of a special organization structure and a knitted pattern, and the requirement of a customer for free tailoring can be met; meanwhile, the skin-friendly softness of the fabric is also ensured.

Description

Technical Field

[0001] The invention relates to the field of knitted fabrics, and in particular to a freely cut knitted fabric and a preparation method thereof. Background Art

[0002] With the development of society, people's requirements for underwear have risen from basic wearing needs to underwear with special functions, fashion, etc. Existing elastic underwear fabrics have been recognized by people in terms of fit, but the edges of elastic fabrics are easy to curl, and they must be sewn with lockstitch when cutting.

[0003] However, overlock sewing not only wastes materials and labor, but also often affects the comfort of wearing; clothing made of such fabrics will leave traces of clothes on the body after being worn, which is not beautiful.

[0004] The patent application number CN202410480628.X in the prior art discloses a weft-knitted free-cut knitted fabric and a manufacturing method thereof, wherein the fabric comprises an air layer jacquard structure, wherein the air layer jacquard structure comprises three layers: a bottom layer, an intermediate layer and a surface layer, wherein the bottom layer is located below the intermediate layer, and the surface layer is located above the intermediate layer, wherein the bottom layer is interwoven with nylon yarn and ordinary spandex, and the intermediate layer is connected with ordinary spandex and extends to the surface layer, wherein the surface layer is interwoven with nylon yarn and ordinary spandex. Although this patent can achieve the effect that the fabric is not easy to fall apart, have rough edges, or curl, to a certain extent, it has little improvement on the curling, shedding, and linearity problems of the fabric; and the fabric has poor softness.

[0005] In view of this, the present invention is proposed. Summary of the invention

[0006] The purpose of the present invention is to provide a freely cut knitted fabric and a preparation method thereof, so as to solve the problems of the prior art in which the curling, loosening and delinearity of the fabric are only slightly improved; and the fabric has poor softness.

[0007] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0008] A freely cut knitted fabric, wherein the freely cut knitted fabric is a double-sided weft knitted air layer structure.

[0009] The knitting pattern of the freely cut knitted fabric has a six-way pattern as one cycle; the six-way pattern is:

[0010] The first route is float, tuck, tuck, float;

[0011] The second and fifth routes are circle, circle, floating line, floating line;

[0012] The third and sixth routes are floating line, floating line, circle, and circle;

[0013] The fourth route is tuck, float, float, tuck.

[0014] Furthermore, the freely cut knitted fabric includes, from outside to inside, a surface layer, a middle layer and an inner layer, and the surface layer and the inner layer are connected through the middle layer.

[0015] Furthermore, in the freely cut knitted fabric, the transverse mesh / inch×vertical mesh / inch is greater than or equal to 3000.

[0016] Furthermore, the first and fourth routes are yarns of the middle layer; the second and fifth routes are yarns of the inner layer, and the third and sixth routes are yarns of the surface layer.

[0017] Furthermore, the yarns of the surface layer and the inner layer include a first yarn and a second yarn, the first yarn is a polyester fiber filament or a polyamide fiber filament or a man-made fiber filament, and the second yarn is an elastic fiber filament; the yarn of the middle layer is an elastic fiber filament.

[0018] Furthermore, the thickness of the polyester fiber filament, polyamide fiber filament, and rayon fiber filament yarn is 15-55D, and the thickness of the elastic fiber filament yarn is 15-30D.

[0019] Furthermore, the yarn length of the polyester fiber filament, polyamide fiber filament, and rayon fiber filament yarn is 20-25 cm / 100 stitches, and the yarn length of the elastic fiber filament yarn is 8-12 cm / 100 stitches.

[0020] Furthermore, the freely cut knitted fabric is a woven structure with two needle tracks on the upper needle disk and two needle tracks on the lower needle cylinder.

[0021] In a second aspect of the present invention, a method for preparing a freely cut knitted fabric is provided. The method for preparing a freely cut knitted fabric is used to prepare any one of the freely cut knitted fabrics described above. The method for preparing a freely cut knitted fabric comprises the following steps:

[0022] S1, yarn preparation;

[0023] S2, grey cloth weaving;

[0024] S3, grey cloth dyeing;

[0025] S4, fabric finishing.

[0026] Further, in step S3, the grey cloth dyeing includes the following steps:

[0027] S31, pre-processing;

[0028] S32, staining;

[0029] S33, exit the cylinder.

[0030] Further, in step S4, the fabric finishing includes the following steps:

[0031] S41, soft treatment;

[0032] S42, drying;

[0033] S43, shaping machine shaping.

[0034] Compared with the prior art, the freely cut knitted fabric and preparation method described in the present invention have the following beneficial effects:

[0035] The freely cut knitted fabric and preparation method described in the present invention greatly improve the curling, shedding and linearity of the fabric through the interrelationship of the double-sided weft knitted air layer structure, the knitting pattern, the triangle arrangement and the preparation method, and meet the customer's requirements for free cutting; at the same time, the skin-friendly softness of the fabric is ensured; in addition, the three-dimensional sense and elasticity of the fabric are enhanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A schematic diagram of a triangle arrangement of a freely cut knitted fabric according to an embodiment of the present invention;

[0037] Figure 2 A schematic diagram of a knitting arrangement of a freely cut knitted fabric according to an embodiment of the present invention;

[0038] Figure 3 This is a schematic structural diagram of a freely cuttable knitted fabric according to an embodiment of the present invention.

[0039] Description of reference numerals:

[0040] 11. Surface layer; 111. First main body layer; 112. First cushioning layer; 12. Inner layer; 121. Second main body layer; 122. Second cushioning layer; 2. Connecting thread; A. First knitting needle; B. Second knitting needle; C. Third knitting needle; D. Fourth knitting needle. DETAILED DESCRIPTION

[0041] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The descriptions of "first", "second", etc. mentioned in the embodiments of the present invention are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0042] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0043] Example 1

[0044] like Figures 1 to 3 As shown, this embodiment proposes a freely cut knitted fabric, which is a double-sided weft knitted air layer structure, which gives the fabric lightness and breathability. The knitting pattern of the freely cut knitted fabric is a six-way pattern as a cycle; the six-way pattern is:

[0045] The first route is float, tuck, tuck, float;

[0046] The second and fifth routes are circle, circle, floating line, floating line;

[0047] The third and sixth routes are floating line, floating line, circle, and circle;

[0048] The fourth route is tuck, float, float, tuck.

[0049] This unique pattern design not only enhances the three-dimensional sense and elasticity of the fabric, but also makes it less likely for the fabric to fall apart or curl during cutting.

[0050] Specifically, the freely cut knitted fabric is a sandwich fabric structure, which includes, from outside to inside, a surface layer 11, a middle layer 2 and an inner layer 12, wherein the surface layer 11 and the inner layer 12 are connected through the middle layer 2. The three layers are connected to each other through a specific weaving method to form a stable and elastic whole.

[0051] Specifically, to ensure the tightness requirement of the fabric, in the freely cut knitted fabric, the transverse mesh / inch×vertical mesh / inch is greater than or equal to 3000, that is, the product of the transverse mesh / inch and the vertical mesh / inch is greater than or equal to 3000.

[0052] Among them, the horizontal mesh / inch means how many small grids there are horizontally per inch of length; the vertical mesh / inch means how many small grids there are vertically per inch of length.

[0053] The high-density design makes the fabric tighter and more wear-resistant while maintaining good breathability and softness.

[0054] Specifically, the first and fourth routes are yarns of the middle layer 2 ; the second and fifth routes are yarns of the inner layer 12 ; and the third and sixth routes are yarns of the surface layer 11 .

[0055] Specifically, the yarns of the surface layer 11 and the inner layer 12 include a first yarn and a second yarn, the first yarn is a polyester fiber filament or a polyamide fiber filament or a man-made fiber filament, and the second yarn is an elastic fiber filament, which ensures the strength of the fabric and gives the fabric a certain elasticity; the yarns of the middle layer 2 are elastic fiber filaments, which further enhance the elasticity and resilience of the fabric.

[0056] The elastic fiber filaments can be stretched to more than twice their own length, further improving the adaptability and comfort of the fabric.

[0057] In this embodiment, the yarns of the surface layer 11 and the inner layer 12 are polyester fiber filaments and elastic fiber filaments.

[0058] More specifically, Figure 3 As shown, the surface layer 11 includes a first main body layer 111 and a first lining layer 112; the first main body layer 111 is arranged near the outer surface of the fabric, and the yarn of the first main body layer 111 is polyester fiber filament; the yarn of the first lining layer 112 is elastic fiber filament. The inner layer 12 includes a second main body layer 121 and a second lining layer 122; the second main body layer 111 is arranged near the inner surface of the fabric, and the yarn of the second main body layer 121 is polyester fiber filament; the yarn of the second lining layer 122 is elastic fiber filament.

[0059] The surface layer 11 and the inner layer 12 of the freely cut knitted fabric both use 15D-55D fine denier polyester or polyamide fiber filaments as the main layer and the lining layer uses elastic fiber filaments that are drafted more than twice their own length. The middle layer 2 uses elastic fiber filaments that are drafted more than twice their own length as connecting yarns, which greatly improves the curling, shedding and linearity of the fabric, and can meet the customer's requirements for free cutting; at the same time, the skin-friendly and soft nature of the fabric is guaranteed, making it very suitable for making underwear and other close-fitting clothing.

[0060] More specifically, the elastic fiber filament is spandex.

[0061] Specifically, the thickness of the polyester fiber yarn is 40D, and the thickness of the elastic fiber filament yarn is 20D.

[0062] Specifically, the yarn length of the polyester fiber filament yarn is 22 cm / 100 needles, and the yarn length of the elastic fiber filament yarn is 10 cm / 100 needles.

[0063] Specifically, Figure 1 and Figure 2 As shown, the freely cut knitted fabric is a woven structure with two needle tracks on the upper needle disk and two needle tracks on the lower needle cylinder.

[0064] More specifically, a first knitting needle A and a second knitting needle B are arranged on the upper needle disc, and a third knitting needle C and a fourth knitting needle D are arranged on the lower needle cylinder; in the first path, the second knitting needle B and the third knitting needle C perform a tucking motion; in the second and fifth paths, the first knitting needle A and the second knitting needle B perform a looping motion; in the third and sixth paths, the third knitting needle C and the fourth knitting needle D perform a looping motion; in the fourth path, the first knitting needle A and the fourth knitting needle D perform a tucking motion.

[0065] This embodiment also provides a method for preparing a freely cut knitted fabric, the method for preparing a freely cut knitted fabric is used to prepare any one of the freely cut knitted fabrics described above, and the method for preparing a freely cut knitted fabric comprises the following steps:

[0066] S1, yarn preparation;

[0067] S2, grey cloth weaving;

[0068] S3, grey cloth dyeing;

[0069] S4, fabric finishing.

[0070] Specifically, in step S3, the grey cloth dyeing includes the following steps: S31, pre-treatment; S32, dyeing; S33, exiting the vat.

[0071] In step S31, the pre-treatment is to perform ultrasonic primary treatment, scouring and bleaching treatment and ultrasonic secondary treatment on the fabric grey cloth in sequence.

[0072] Specifically, the ultrasonic treatment includes the following steps: ultrasonic assisted cellulase treatment, the ultrasonic frequency is 80KHz to ensure that the ultrasonic wave can penetrate into the fiber; the cellulase concentration is 8% (owf), the treatment temperature is 40°C to maintain the activity of the cellulase; the pH value is 6 to optimize the action environment of the cellulase; the treatment time is 40 minutes to ensure the treatment effect.

[0073] In the process of ultrasonic treatment, ultrasound cooperates with cellulase treatment, using the cavitation effect of ultrasound and the catalytic effect of cellulase to remove impurities on the surface of the grey cloth and adhesive substances between fibers, improve the hygroscopicity of the fibers, and prepare for the subsequent dyeing process.

[0074] Ultrasonic treatment is used to fully remove the hairiness of varying lengths on the fiber surface, making the hairiness in the fabric softer and giving the fabric a better smooth feel; at the same time, the vibration of the ultrasonic wave can also make the hairiness in the fabric looser and more tidy, making the fabric more fluffy, soft and smooth; the etching effect of ultrasonic treatment is destructive to the fibers on the woven grey cloth, which is beneficial to the opening of the fibers inside the organization and the adsorption of softeners in the scouring and bleaching treatment.

[0075] Specifically, the scouring and bleaching treatment is to put the grey cloth into the bath liquid, and add the scouring and bleaching formula into the bath liquid: 2g / L refining enzyme, 0.2g / L flake caustic soda, H 2 O 2 8g / L, activator 2g / L, anti-wrinkle agent 1g / L, softener 3g / L, then heat the bath liquid with the scouring and bleaching formula to 80℃ and keep it warm for 20min.

[0076] By adopting a reasonable and mild boiling and bleaching formula, the impurities, wax, ash and cottonseed hulls in the fabric fibers are removed, while the loss of the fabric fibers themselves is minimized, so as to maximize the fabric profit. At the same time, it can also avoid the influence of excessive fiber loss on the fastness and other properties of the fabric.

[0077] After the boiling and bleaching treatment, firstly, the loss of the fabric itself is reduced to a minimum; secondly, it is beneficial to the efficiency and fastness of the subsequent dyeing of the fabric; thirdly, it is beneficial to improve the softness of the fabric; fourthly, it is beneficial to improve the curling, shedding and linearity of the fabric, and can meet the customer's requirements for free cutting.

[0078] The ultrasonic secondary treatment is to wash the grey cloth twice after boiling and bleaching treatment, add reducing agent treatment liquid during washing, and then ultrasonically treat it for 15 minutes at 40°C, the bath ratio is 1:10, the frequency of the ultrasonic wave is 90kHz, and after the second ultrasonic treatment, add polyvinyl alcohol and keep it at room temperature for 10 minutes, then wash and dry.

[0079] The etching effect of the ultrasonic secondary treatment is somewhat destructive to the fibers on the woven grey cloth, which is beneficial to the opening of the fibers inside the tissue and the adsorption of softeners in subsequent processes.

[0080] First, it helps to improve the curling, loosening and linearity of the fabric, and can meet customers' requirements for free cutting; second, it gives the fabric better softness.

[0081] In step S31, the fabric grey cloth is subjected to ultrasonic primary treatment, boiling and bleaching treatment and ultrasonic secondary treatment in sequence. The ultrasonic primary treatment, boiling and bleaching treatment and ultrasonic secondary treatment are interrelated and work together. First, they are conducive to improving the softness of the fabric; second, they are conducive to improving the curling, shedding and linearity of the fabric, and can meet the customer's requirements for free cutting; third, they are conducive to the efficiency and dyeing fastness of the subsequent dyeing of the fabric.

[0082] Specifically, in step S4, fabric finishing includes the following steps: S41, softening treatment; S42, drying; S43, shaping in a shaping machine.

[0083] Specifically, in step S43, the temperature of the setting machine during setting is 130-170°C.

[0084] Example 2

[0085] In this embodiment, the difference from embodiment 1 is that

[0086] Specifically, the thickness of the polyester fiber filament yarn is 55D, and the thickness of the elastic fiber filament yarn is 30D.

[0087] Specifically, the yarn length of the polyester fiber filament yarn is 20 cm / 100 needles, and the yarn length of the elastic fiber filament yarn is 12 cm / 100 needles.

[0088] Example 3

[0089] In this embodiment, different from the embodiment 1,

[0090] Specifically, the thickness of the polyester fiber filament yarn is 15D, and the thickness of the elastic fiber filament yarn is 15D.

[0091] Specifically, the yarn length of the polyester fiber filament yarn is 25 cm / 100 needles, and the yarn length of the elastic fiber filament yarn is 8 cm / 100 needles.

[0092] Example 4

[0093] In this embodiment, different from the embodiment 1, the yarns of the surface layer 11 and the inner layer 12 are polyamide fiber filaments and elastic fiber filaments.

[0094] The yarns of the first main body layer 111 and the second main body layer 121 are polyamide fiber filaments.

[0095] Specifically, the thickness of the polyamide fiber yarn is 40D.

[0096] Specifically, the yarn length of the polyamide fiber filament yarn is 22cm / 100 needles

[0097] Example 5

[0098] In this embodiment, different from the embodiment 1, the yarns of the surface layer 11 and the inner layer 12 are polyamide fiber filaments and elastic fiber filaments.

[0099] The yarns of the first main body layer 111 and the second main body layer 121 are polyamide fiber filaments.

[0100] Specifically, the thickness of the polyamide fiber filament yarn is 55D.

[0101] Specifically, the yarn length of the polyamide fiber filament yarn is 20 cm / 100 needles.

[0102] Example 6

[0103] In this embodiment, different from the embodiment 1, the yarns of the surface layer 11 and the inner layer 12 are man-made fiber filaments and elastic fiber filaments.

[0104] The yarns of the first main body layer 111 and the second main body layer 121 are man-made fiber filaments.

[0105] Specifically, the thickness of the artificial fiber filament yarn is 15D.

[0106] Specifically, the yarn length of the man-made fiber filament yarn is 25 cm / 100 needles.

[0107] Comparative Example 1

[0108] In this comparative example, unlike Example 1, the triangular arrangement and weaving structure in the specific implementation manner of the patent application number CN202410480628.X is used.

[0109] Performance Testing

[0110] 100 consumers were asked to conduct softness test and curling, unraveling and thread loss evaluation on the fabrics prepared in Examples 1 to 6 and Comparative Example 1. The average values ​​of the softness test and curling score are shown in Table 1.

[0111] sample Softness Curling, unraveling, and line drop Example 1 85.6 94.1 Example 2 84.2 93.3 Example 3 82.7 91.2 Example 4 86.4 93.8 Example 5 84.3 92.9 Example 6 81.9 90.5 Comparative Example 1 68.1 75.2

[0112] As can be seen from Table 1, the freely cut knitted fabrics described in Examples 1 to 6 of the present invention are interrelated and work together through the double-sided weft knitted air layer structure, the knitting pattern, the triangle arrangement and the preparation method, so that the curling, shedding and linearity of the fabric are greatly improved, and the customer's requirements for free cutting are met; at the same time, the skin-friendly softness of the fabric is guaranteed.

[0113] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

Claims

1. A freely cut knitted fabric, characterized in that: The freely cut knitted fabric is a double-sided weft knitted air layer structure, and the knitting pattern of the freely cut knitted fabric is a six-way pattern as a cycle; the six-way pattern is: The first route is float, tuck, tuck, float; The second and fifth routes are circle, circle, floating line, floating line; The third and sixth routes are floating line, floating line, circle, and circle; The fourth route is tuck, float, float, tuck.

2. The freely cut knitted fabric according to claim 1, characterized in that: The freely cut knitted fabric comprises, from the outside to the inside, a surface layer (11), an intermediate layer (2) and an inner layer (12), wherein the surface layer (11) and the inner layer (12) are connected via the intermediate layer (2).

3. The freely cut knitted fabric according to claim 2, characterized in that: In the freely cut knitted fabric, the transverse mesh / inch×vertical mesh / inch is greater than or equal to 3000.

4. The freely cut knitted fabric according to claim 3, characterized in that: The first and fourth yarns are yarns of the middle layer (2); the second and fifth yarns are yarns of the inner layer (12); and the third and sixth yarns are yarns of the surface layer (11).

5. The freely cut knitted fabric according to claim 4, characterized in that: The yarns of the surface layer (11) and the inner layer (12) include a first yarn and a second yarn, the first yarn is a polyester fiber filament, a polyamide fiber filament or a man-made fiber filament, and the second yarn is an elastic fiber filament; the yarns of the middle layer (2) are elastic fiber filaments.

6. The freely cut knitted fabric according to claim 5, characterized in that: The thickness of the polyester fiber filament, polyamide fiber filament and rayon fiber filament yarn is 15-55D, and the thickness of the elastic fiber filament yarn is 15-30D.

7. The freely cut knitted fabric according to claim 6, characterized in that: The yarn length of the polyester fiber filament, polyamide fiber filament and artificial fiber filament yarn is 20-25 cm / 100 stitches, and the yarn length of the elastic fiber filament yarn is 8-12 cm / 100 stitches.

8. The freely cut knitted fabric according to claim 1, characterized in that: The freely cut knitted fabric is a knitted structure with two needle tracks on the upper needle disc and two needle tracks on the lower needle cylinder.

9. A method for preparing a freely cut knitted fabric, characterized in that: The method for preparing the freely cut knitted fabric is used to prepare the freely cut knitted fabric according to any one of claims 1 to 8, and the method for preparing the freely cut knitted fabric comprises the following steps: S1, yarn preparation; S2, grey cloth weaving; S3, grey cloth dyeing; S4, fabric finishing.

10. The method for preparing a freely cut knitted fabric according to claim 9, characterized in that: In step S3, the grey cloth dyeing comprises the following steps: S31, pre-processing; S32, staining; S33, exit the cylinder.

11. The method for preparing a freely cut knitted fabric according to claim 9, characterized in that: In step S4, fabric finishing includes the following steps: S41, soft treatment; S42, drying; S43, shaping machine shaping.

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