Preparation method of low-extensibility composite fabric

Abstract

The invention discloses a preparation method of a low-extensibility composite fabric. The preparation method comprises the following steps: weaving a surface layer woven fabric by using low-extensibility yarns; weaving a bottom-layer woven fabric by using low-extensibility yarns; performing oblique sewing on the hot melt adhesive film by using low-extensibility yarns to form a plurality of first sewing tracks with certain intervals; low-extensibility yarn is used for conducting oblique sewing on the hot melt adhesive film, and a plurality of second sewing tracks with certain intervals are formed; the surface-layer woven fabric, the hot melt adhesive film and the bottom-layer woven fabric are sequentially stacked and subjected to hot-pressing compounding. The surface layer woven fabric and the bottom layer woven fabric provide acting force for limiting extension in the warp and weft directions for the composite fabric, the middle film layer provides acting force for limiting extension in the inclined direction, the overall extensibility of the fabric is low, and the fabric is not prone to pulling deformation. The hot melt adhesive film is used for hot-pressing compounding, the composite fabric is not prone to layering and loosening and soft in hand feeling, and the hot melt adhesive film layer does not affect the fabric styles of the surface layer fabric and the bottom layer fabric.

Description

Technical Field

[0001] The invention relates to a method for preparing a low-extensibility composite fabric, and belongs to the technical field of composite fabric preparation. Background Art

[0002] At present, with the improvement of living standards, people have higher and higher requirements for textile fabrics, especially in the application fields of backpacks, shoe uppers and clothing, which require fabrics to have low ductility and soft feel in all directions. However, due to the limitations of the weaving principle of textile equipment, it is difficult for single-layer fabrics to achieve low extensibility in the diagonal direction. Woven fabrics can only achieve low extensibility in the warp and weft directions, but they have no support in the diagonal direction and are easy to deform. Knitted fabrics usually have better extensibility and can only achieve low extensibility in the warp or weft direction. In terms of composite fabrics, the low extensibility effect of fabrics in the existing technical solutions is poor, the fabric feels rough, rigid, and the process is complicated.

[0003] Patent document 1 (publication number CN 221187719U) discloses a composite glass fiber cloth, which includes a first tensile layer, a first oblique woven layer, a glass fiber layer, a second oblique woven layer and a second tensile layer from bottom to top. However, the glass fiber layer and the oblique woven layer of this method are both knitted structures, which have good knitting extensibility and are prone to deformation; ultrasonic reinforcement is used, and the fastness is low.

[0004] Patent document 2 (publication number CN 213383361U) discloses a multi-axial sandwich glass fiber mat, in which a first oblique glass fiber roving layer is arranged between the warp glass fiber unidirectional cloth and the non-woven core material layer, and a second oblique glass fiber roving layer is arranged between the weft glass fiber unidirectional cloth and the non-woven core material layer; and it is sewn together through ultra-high molecular weight polyethylene filaments, but this method has a poor low elongation effect on the fabric, and the use of ultra-high molecular weight polyethylene filaments has a great influence on the fabric surface effect, color, and feel.

[0005] Therefore, it is urgent to study a method for preparing a composite fabric with low elongation in all directions and soft feel. Summary of the invention

[0006] The purpose of the present invention is to overcome the problems existing in the above-mentioned technologies and provide a low-extension soft composite fabric and a preparation method thereof. The composite fabric preparation method of the present invention has good low-extension effect, is not easily deformed under force, has a soft feel, and is easy to operate.

[0007] To solve the above technical problems, the purpose of the present invention is achieved as follows:

[0008] The present invention relates to a method for preparing a low-extensibility composite fabric, characterized in that it comprises the following preparation steps:

[0009] (a) Use low-extensibility yarn to weave the surface woven fabric;

[0010] (ii) Use low-extensibility yarn to weave the bottom woven fabric;

[0011] (3) using a low-extensibility yarn to perform oblique sewing on the hot-melt adhesive film to form a plurality of first sewing tracks with a certain spacing;

[0012] (iv) on the basis of the previous step, using low-extensibility yarn to perform oblique sewing on the hot-melt adhesive film to form a plurality of second sewing tracks with a certain spacing;

[0013] (5) stacking the surface woven fabric prepared in step one, the hot melt adhesive film prepared in steps three and four, and the bottom woven fabric prepared in step two in sequence, and performing hot pressing and laminating;

[0014] The first sewing track and the second sewing track have opposite inclination directions.

[0015] On the basis of the above scheme and as a preferred scheme of the above scheme: the first sewing track and the second sewing track are symmetrical about the left and right axes.

[0016] On the basis of the above scheme and as a preferred scheme of the above scheme: the low-extensibility yarn includes one or more of cotton yarn, wool yarn, linen yarn, polyester, nylon, polypropylene fiber, polyethylene fiber, and aramid fiber.

[0017] On the basis of the above scheme and as a preferred scheme of the above scheme: the components of the hot melt adhesive film include one or more of EVA, PA, PES, PP, and TPU.

[0018] On the basis of the above scheme and as a preferred scheme of the above scheme: the sewing methods include machine sewing, hand sewing, gluing, and embroidery.

[0019] On the basis of the above scheme and as a preferred scheme of the above scheme: the spacing between two adjacent first sewing tracks and the spacing between two adjacent second sewing tracks are both no greater than 5 cm.

[0020] On the basis of the above scheme and as a preferred scheme of the above scheme: the angle between the first sewing track and the second sewing track and the weft yarn in the surface woven fabric is 30-60°.

[0021] On the basis of the above scheme and as a preferred scheme of the above scheme: the temperature of the hot pressing compound is 80-160°C.

[0022] The method for preparing a low-extensibility soft composite fabric of the present invention has the following beneficial effects:

[0023] (1) The surface woven fabric and the bottom woven fabric provide the composite fabric with a force to limit the extension in the warp and weft directions, and the middle membrane layer provides a force to limit the extension in the oblique direction. The overall extensibility of the fabric is low and it is not easy to be pulled and deformed.

[0024] (2) Using hot-melt adhesive film for hot-pressing lamination, the composite fabric is not easy to delaminate and has a soft hand feel. The hot-melt adhesive film layer does not affect the fabric style of the top and bottom fabrics. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic structural diagram of the low-extensibility composite fabric involved in the present invention;

[0026] Figure 2 It is a schematic structural diagram of the hot melt adhesive film layer involved in the present invention.

[0027] The markings in the figure are as follows: 1-surface woven fabric; 2-hot melt adhesive film; 3-bottom woven fabric; 4-first sewing stitch; 5-second sewing stitch. DETAILED DESCRIPTION

[0028] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0029] Example 1

[0030] This embodiment discloses a method for preparing a low-extensibility soft composite fabric, comprising:

[0031] (1) 32S / 2 cotton yarn is used as the warp yarn and the weft yarn to weave the surface woven fabric 1. The cotton yarn has low extensibility and provides a force to limit the elongation in the warp and weft directions for the composite fabric, and the composite fabric has a soft and comfortable feel.

[0032] (2) Use 32S / 2 cotton yarn as warp and weft yarn to weave the bottom woven fabric 3.

[0033] (3) Use 300D / 72F ultra-high molecular weight polyethylene fiber filament to sew at an angle of 45° on the EVA hot melt adhesive film 2, and then sew the second strand in parallel at an interval of 1 cm, and so on until the end, forming a first sewing track 4.

[0034] (4) The sewing direction is symmetrical to the left and right axes, and polyethylene staple yarn is used to sew on the EVA film 2, with an interval of 1 cm, and the second yarn is sewn in parallel, and so on, until the end, to form a second sewing track 5. The first sewing track 4 and the second sewing track 5 finally form a diamond lattice structure on the EVA melt film 2.

[0035] (5) Combining in the order of “surface woven fabric 1+hot melt adhesive film 2+bottom woven fabric 3”, the composites were hot pressed at a temperature of 120° C. for 30 seconds.

[0036] Example 2

[0037] This embodiment relates to a preparation step of a low-extensibility soft composite fabric, comprising:

[0038] (a) Using 300D / 72F ultra-high molecular weight polyethylene fiber as warp yarn and weft yarn to weave the surface woven fabric 1.

[0039] (ii) Use 300D / 96F polyester low-elastic yarn DTY as warp yarn and weft yarn to weave the bottom woven fabric 3.

[0040] (iii) Use a bond thread (made of nylon) to sew on the PP hot melt adhesive film 2 at an angle of 45°, then sew the second thread in parallel at an interval of 2.54 cm, and so on until the end, forming a first sewing track 4.

[0041] (IV) The sewing direction is symmetrical to the left and right axes, and the Bondi thread is used to sew on the PP hot melt adhesive film 2, with an interval of 2.54 cm, and the second thread is sewn in parallel, and so on, until the end, to form a second sewing track 5. The first sewing track 4 and the second sewing track 5 finally form a diamond grid structure on the hot melt adhesive film.

[0042] (V) Combining in the order of “surface woven fabric 1+hot melt adhesive film 2+bottom woven fabric 3”, hot pressing at a temperature of 145° C. for 30 seconds for compounding.

[0043] Example 3

[0044] This embodiment relates to a preparation step of a low-extensibility soft composite fabric, comprising:

[0045] (a) Using 32s wool yarn as warp yarn and weft yarn to weave the surface woven fabric 1.

[0046] (ii) Use 28s / 6 cotton yarn as warp yarn and 10.5N linen yarn as weft yarn to weave the bottom woven fabric 3.

[0047] (iii) Use cotton sewing thread to sew on the PA hot melt adhesive film 2 at an angle of 60°, then sew the second thread in parallel at an interval of 2 cm, and so on until the end, forming a first sewing track 4.

[0048] (IV) The sewing direction is symmetrical to the left and right axes, and cotton sewing thread is used to sew on the PA hot melt adhesive film 2, with an interval of 2 cm, and the second thread is sewn in parallel, and so on, until the end, to form a second sewing track 5. The first sewing track 4 and the second sewing track 5 finally form a diamond grid structure on the hot melt adhesive film.

[0049] (V) Combining in the order of “surface woven fabric 1+hot melt adhesive film 2+bottom woven fabric 3”, hot pressing at a temperature of 145° C. for 30 seconds for compounding.

[0050] Comparative Example 1

[0051] This embodiment discloses a method for preparing a low-extensibility soft composite fabric, comprising:

[0052] (i) Using 150D / 48F polyester high elastic yarn as warp yarn and weft yarn to weave the surface woven fabric 1;

[0053] (ii) using 150D / 48F polyester high elastic yarn as warp yarn and weft yarn to weave the bottom woven fabric 2;

[0054] (iii) Use 300D / 72F ultra-high molecular weight polyethylene fiber 4 to sew on the EVA hot melt adhesive film 2 at an angle of 45 degrees, then sew the second one in parallel at an interval of 1 cm, and so on until the end, forming a first sewing track 4.

[0055] (IV) The sewing direction is symmetrical to the left and right axes, and polyethylene staple yarn 5 is used to sew on the EVA film 2, with an interval of 1 cm, and the second yarn is sewn in parallel, and so on, until the end, to form a second sewing track 5. The first sewing track 4 and the second sewing track 5 finally form a diamond lattice structure on the EVA melt film 2.

[0056] (V) Combining in the order of “surface woven fabric 1+hot melt adhesive film 2+bottom woven fabric 3”, hot pressing at a temperature of 120° C. for 30 seconds for compounding.

[0057] Comparative Example 2

[0058] This embodiment relates to a preparation step of a low-extensibility soft composite fabric, comprising:

[0059] (a) Using 300D / 72F ultra-high molecular weight polyethylene fiber as warp yarn and weft yarn to weave the surface woven fabric 1.

[0060] (ii) Use 300D / 96F polyester low-elastic yarn DTY as warp yarn and weft yarn to weave the bottom woven fabric 3.

[0061] (iii) Using PP film as the middle film layer, the layers are assembled in the order of “surface woven fabric 1+hot melt adhesive film 2+bottom woven fabric 3” and laminated by hot pressing at a temperature of 145°C for 30 seconds.

[0062] The fabrics prepared in the above embodiments and comparative examples were tested for performance:

[0063] When the applied force is 1.5N / cm, the elongation of the composite fabric at different angles to the warp direction is tested (%)

[0064] 0° 45° 90° 60° 135° Example 1 3.5 2.0 3.5 3.6 2.0 Example 2 1.7 4.0 2.0 4.8 4.0 Example 3 5.0 6.5 5.0 4.0 6.5 Comparative Example 1 9.5 3.0 10.0 4.5 3.0 Comparative Example 2 3.0 20.0 3.0 16.0 19.6

[0065] As can be seen from Table 1, the fabric prepared by the present invention has a low ductility effect in all directions. The introduction of low ductility yarns in a specific angle direction can improve the overall low ductility effect of the fabric, and it is not easy to deform under stress. Compared with Example 1, in Comparative Example 1, polyester high elastic yarn is used as the raw material of the surface woven fabric and the bottom woven fabric, and there is no low extension yarn in the warp and weft directions, so the limiting extension force is small, so that the composite fabric has a higher elongation under stress. Compared with Example 2, in Comparative Example 2, the low ductility yarns are not cross-sewn obliquely on the hot melt adhesive film, and the composite fabric has no restricted extension force in the oblique direction, so the elongation under stress at 45°, 60° and 135° is higher.

[0066] The preferred specific embodiments of the present invention are described in detail above. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. A method for preparing a low-extensibility composite fabric, characterized in that: The method comprises the following preparation steps: (i) Using low-extensibility yarn to weave the surface layer of woven fabrics (1); (ii) using low-extensibility yarn to weave the base woven fabric (3); (3) using a low-extensibility yarn to perform oblique sewing on the hot-melt adhesive film (2) to form a plurality of first sewing tracks (4) with a certain spacing; (iv) on the basis of the previous step, using low-extensibility yarn to perform oblique sewing on the hot-melt adhesive film to form a plurality of second sewing tracks (5) with a certain spacing; (5) stacking the surface woven fabric prepared in step (1), the hot melt adhesive film prepared in step (3) and step (4), and the bottom woven fabric prepared in step (2) in sequence, and performing hot pressing and laminating; The first sewing track (4) and the second sewing track (5) have opposite inclination directions.

2. The method for preparing a low-extensibility composite fabric according to claim 1, characterized in that: The first sewing track (4) and the second sewing track (5) are symmetrical about the left and right axes.

3. The method for preparing a low-extensibility composite fabric according to claim 1, characterized in that: The low-extensibility yarn includes one or more of cotton yarn, wool yarn, linen yarn, polyester, nylon, polypropylene, polyethylene fiber, and aramid.

4. The method for preparing a low-extensibility composite fabric according to claim 1, characterized in that: The components of the hot melt adhesive film include one or more of EVA, PA, PES, PP, and TPU.

5. The method for preparing a low-extensibility composite fabric according to claim 1, characterized in that: The sewing methods include machine sewing, hand sewing, gluing and embroidery.

6. The method for preparing a low-extensibility composite fabric according to claim 1, characterized in that: The spacing between two adjacent first sewing tracks (4) and the spacing between two adjacent second sewing tracks (5) are both no greater than 5 cm.

7. The method for preparing a low-extensibility composite fabric according to claim 1, characterized in that: The first sewing track (4) and the second sewing track (5) form an angle of 30-60° with the weft yarns in the surface woven fabric (1).

8. The method for preparing a low-extensibility composite fabric according to claim 1, characterized in that: The temperature of the hot pressing compounding is 80-160°C.

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