Preparation method of antistatic warp knitting tooling fabric

Abstract

The preparation method of the antistatic warp-knitted tooling fabric comprises the following steps: selecting one of polyester DTY (Draw Textured Yarn) and polypropylene fiber, cotton plied yarns and conductive filaments as raw materials; warping, wherein a three-bar warp knitting machine is adopted for weaving; wherein the weave structure matching and threading mode of each guide bar is as follows: GB1 comb: 1-0 / 1-2 / / (m) A; gB2 comb: 1-1 / 0-0 / / (m-n) B, (n) C; gB3 comb: 2-3 / 1-0 / / (m) A; m is an integer ranging from 20 to 30, n is an integer ranging from 1 to 2, A is polyester DTY or polypropylene fiber, B is cotton plied yarn, and C is wrap yarn made of the cotton plied yarn and conductive filaments. When the anti-static warp knitting tooling fabric rubs with fabrics or objects made of different materials, static electricity can be effectively prevented from being generated; and the fabric has the advantages of water resistance, breathability, acid and alkali resistance, high temperature resistance, heat preservation, softness, comfort and the like, is easy to clean, is durable and is suitable for static resistance in various industrial fields.

Description

Technical Field

[0001] The invention relates to a warp knitted fabric with antistatic performance and a production method thereof, and belongs to the field of textiles. Background Art

[0002] The textile fabrics commonly used in daily life only have some basic functions, such as basic waterproof, moisture permeability, fire resistance, high temperature resistance, acid and alkali resistance, etc.; however, these basic functions alone cannot meet the material requirements of certain special fields. For example, industries such as medicine, pharmaceuticals, microbial engineering, and precision instruments require that static electricity should be reduced to prevent the disorder of instrument and equipment data. Oil depot and gas station staff should reduce static electricity to prevent fires and explosions caused by static electricity. Medical staff in hospitals and nursing homes should reduce static electricity to facilitate safety and stability in special environments such as instrument testing and surgery.

[0003] Warp knitted fabrics are knitted fabrics made of one or several groups of parallel yarns that are fed into the warp direction of the machine and looped at the same time on all the working needles. Compared with weft knitted fabrics, warp knitted fabrics generally have less extensibility. Warp knitted fabrics can use different tissues to reduce the defects of weft knitted fabrics caused by broken yarns and holes. Warp knitted fabrics are more suitable for the production of tooling fabrics.

[0004] Currently, most of the functional fabrics available on the market are prepared after functional finishing. The binding ability of functional components to fabrics is weak. After the fabrics are soaked in water or washed several times, the antistatic effect will weaken until it disappears, and the antistatic effect is not good. Summary of the invention

[0005]

Technical issues

[0006] Currently, most of the functional fabrics available on the market are prepared after functional finishing. The binding ability of functional components to fabrics is weak. After the fabrics are soaked in water or washed several times, the antistatic effect will weaken until it disappears, and the antistatic effect is not good.

[0007]

Technical solution

[0008] In order to solve the problems of the above or existing antistatic fabrics, the purpose of the present invention is to provide a warp knitted workwear fabric, which has good anti-wrinkle, anti-fouling and antistatic properties while meeting normal wearing performance.

[0009] The first object of the present invention is to provide a method for preparing an antistatic warp knitted workwear fabric, comprising the steps of:

[0010] (1) Material selection: Choose one of polyester DTY, polypropylene, cotton strands and conductive yarn as raw materials;

[0011] (2) Warping: Warping the raw materials on a warping machine according to the requirements of width, horizontal density and yarn penetration rate according to a certain number of warps;

[0012] (3) Weaving: Weaving is done using a three-bar warp knitting machine;

[0013] Among them, the selection of each comb structure and the threading method during warping and weaving are:

[0014] GB1 comb: 1-0 / 1-2 / / (m)A;

[0015] GB2 comb: 1-1 / 0-0 / / (mn)B,(n)C;

[0016] GB3 comb: 2-3 / 1-0 / / (m)A;

[0017] m is an integer between 20 and 30, n is an integer between 1 and 2, A is polyester DTY or polypropylene, B is cotton strands, and C is a coated yarn made of cotton strands and conductive yarn.

[0018] The coated yarn made of cotton strands and conductive yarn is used as the antistatic yarn. The coated yarn has a strong structural strength, which is conducive to better strengthening the connection between the surface and the inner layer. The core yarn of the coated yarn is twisted cotton fiber. Cotton fiber has a strong moisturizing ability and can store moisture in the air in the fiber, so that the core yarn remains relatively moist, thereby reducing the generation of static charge and playing a certain antistatic effect.

[0019] GB1 uses A to weave the base fabric, GB2 uses B and C as weft yarns to strengthen and anti-static functions, and GB3 uses A to weave the lining fabric.

[0020] GB1 uses polyester yarn to weave warp plain fabric. Polyester fiber has the characteristics of high strength and high wear resistance. The density of the fabric is moderate, and it has good waterproof, breathable and thermal insulation properties. It can obtain anti-static warp knitted workwear fabrics with moderate roughness, improving the touch of the human body.

[0021] GB2 uses cotton yarn or antistatic yarn to weave the weft-inserted tissue, so that the antistatic warp knitted workwear fabric has higher strength. The role of antistatic yarn is to ensure the antistatic performance of antistatic warp knitted workwear fabric. When the antistatic yarn is 27 empty and 1 wear, a specific spacing can be maintained between two adjacent antistatic yarns in the antistatic warp knitted workwear fabric to ensure uniform antistatic performance. If the spacing is too small, that is, the amount of antistatic yarn used is too much, the waterproof, breathable, heat-insulating and other properties of the resulting warp knitted fabric will be reduced, and the flexibility and surface touch will deteriorate, and the made clothing will not be comfortable enough. If the spacing is too large, that is, the amount of antistatic yarn used is too little, the antistatic performance of the whole cloth will be unevenly distributed, and even the local position does not have antistatic performance at all.

[0022] GB3 uses polyester yarn to weave the warp pile structure, which increases the flexibility of the fabric, improves the wearing performance of the fabric, and makes the wearer feel more comfortable.

[0023] In one embodiment of the present invention, in step (1), the polyester DTY is a polyester DTY with a circular cross-section or a polyester DTY with a special-shaped cross-section; the special-shaped cross-section is selected from a "+" shape, an "I" shape, and a "M" shape.

[0024] In one embodiment of the present invention, in step (1), the specification of polyester DTY is one of 70D-80D / 60f-72f.

[0025] In one embodiment of the present invention, in step (1), the specification of polypropylene is one of 70D-80D / 60f-72f.

[0026] In one embodiment of the present invention, in step (1), the cotton strands have a specification of 45S / 2 to 60S / 2.

[0027] In one embodiment of the present invention, in step (1), the conductive thread has a specification of 5 to 15D.

[0028] In one embodiment of the present invention, C is a covered yarn made of 1 to 3 cotton strands and 1 to 5 conductive threads, the core yarn is the cotton strand, and the covering yarn is the conductive thread.

[0029] In one embodiment of the present invention, C is a covered yarn made of 1 cotton strand and 2 conductive threads, the core yarn is the cotton strand, and the covering yarn is the conductive thread.

[0030] In one embodiment of the present invention, in step (3), a three-bar high-speed tricot warp knitting machine is used for weaving.

[0031] In one embodiment of the present invention, in step (3), a HKS3 three-bar high-speed tricot warp knitting machine is used for weaving.

[0032] In one embodiment of the present invention, in step (3), the weaving machine gauge is one of E28, E32, E36, and E40.

[0033] In one embodiment of the present invention, in step (3), the warp let-off amount of GB1 is 2×1000~1200mm / rack; the warp let-off amount of GB2 is 2×200~280mm / rack; and the warp let-off amount of GB3 is 2×1400~1600mm / rack.

[0034] In one embodiment of the present invention, in step (3), the warp let-off amount of GB1 is 2×1044 mm / rack; the warp let-off amount of GB2 is 2×223 mm / rack; and the warp let-off amount of GB3 is 2×1423 mm / rack.

[0035] In one embodiment of the present invention, the fabric prepared in step (3) is post-finished; the post-finishing is one or more of anti-wrinkle treatment, antibacterial treatment, and anti-fouling treatment.

[0036] In one embodiment of the present invention, the fabric prepared in step (3) is post-finished, and the post-finishing is an anti-fouling treatment. The fabric prepared in step (3) is subjected to a padding process using a solution of an anti-fouling finishing agent, and then dried at 100° C. to 130° C. for 1 to 3 minutes; in the solution of the anti-fouling finishing agent, the concentration of the anti-fouling finishing agent is 60 to 100 g / L.

[0037] The second object of the present invention is to provide antistatic warp knitted workwear fabric prepared by the above preparation method.

[0038] The third object of the present invention is to provide application of the above preparation method in antistatic textiles.

[0039] Beneficial effects:

[0040] Compared with the current conductive antistatic fabrics, the antistatic warp knitted workwear fabric of the present invention can effectively prevent the generation of static electricity when rubbing against fabrics or objects of different materials. The antistatic conductive fibers on the contact surface of the antistatic fabric with the human body can quickly conduct the static electricity generated by the human body, cut off the current, and protect the safety of the human body and the surrounding environment.

[0041] Through the weft-inserted warp knitting structure, the antistatic yarn is used to guide the static electricity between the coil surface (the front side of the fabric, facing outward when worn) and the extension line surface (the back side of the fabric, close to the skin when worn), so that the static charge can be guided to the outside of the fabric, achieving the antistatic effect. And because the surface of the warm wrapping yarn is wrapped with conductive wire, the static charge generated in the extension line surface can also be guided to the outside of the fabric through the antistatic yarn, thereby enhancing the antistatic effect of the fabric.

[0042] The antistatic warp knitted workwear fabric is also waterproof and breathable, acid and alkali resistant, high temperature resistant, heat-insulating, soft and comfortable. It is easy to care for, durable, and suitable for antistatic use in various industrial fields. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 The invention discloses a machine-mounting process sheet for the antistatic warp knitted workwear fabric.

[0044] Figure 2 This is a physical picture of the antistatic warp knitted workwear fabric of the present invention.

[0045] Figure 3 The present invention discloses an organization diagram of the antistatic warp knitted workwear fabric. DETAILED DESCRIPTION

[0046] Example 1

[0047] A method for preparing an antistatic warp knitted workwear fabric, wherein the machine process is simple as follows Figure 1 As shown, the steps include:

[0048] (1) Material selection: 72D / 72f matte polyester DTY (circular cross section), 60S / 2 cotton strands, and 10D white conductive yarn are selected as raw materials;

[0049] (2) Warping: Warping the raw materials on a warping machine according to the requirements of width, horizontal density and yarn penetration rate according to a certain number of warps;

[0050] (3) Weaving: HKS3 three-bar high-speed tricot warp knitting machine is used for weaving;

[0051] The warp delivery amount is as follows:

[0052] GB1:2×1044mm / rack,

[0053] GB2:2×223mm / rack,

[0054] GB3: 2×1423mm / rack;

[0055] (4) Post-processing:

[0056] The fabric was treated with a solution of FK-522NT antifouling finishing agent (industrial grade, China Textile Science Research Institute, Beijing Zhongfang Chemical Co., Ltd.) with a concentration of 80 g / L, using a one-dip and one-pad process and drying at 100°C to 130°C for 1 to 3 min;

[0057] (5) Inspection and packaging.

[0058] Among them, the selection of each comb structure and the threading method during warping and weaving are:

[0059] GB1 comb: 1-0 / 1-2 / / 28A;

[0060] GB2 comb: 1-1 / 0-0 / / 27B, 1C;

[0061] GB3 comb: 2-3 / 1-0 / / 28A;

[0062] A is 72D / 72f matte polyester DTY, B is 60S / 2 cotton strands, and C is a wrapped yarn made of one 60S / 2 cotton strand and two 10D white conductive yarns.

[0063] The actual picture of the antistatic warp knitted workwear fabric is as follows: Figure 2 As shown in the organizational chart Figure 3As shown, it is a 32-needle structure (E32), in which the red weft yarn on the left is a conductive yarn wrapped yarn. It has the advantages of waterproof and breathable, acid and alkali resistance, high temperature resistance, heat preservation, softness and comfort, and can also effectively prevent static electricity.

[0064] Specific test method for fabric washability: Wash three times according to AATCC 124-2018. The smooth appearance grade of the antistatic warp knitted workwear fabric is 3.5, which is better than the smooth appearance grade 3 of the commercially available workwear fabric.

[0065] Specific test method for fabric water absorption speed: According to the FTTS-FA-004-3.0 version-4.3 drip method, the water absorption speed of the front and back sides of the fabric is measured to be less than 1 second; according to the FTTS-FA-004-3.0 version-4.4 wicking method, the warp absorption height is 105mm, and the weft absorption height is 93mm, which is better than the warp absorption height of 89mm and the weft absorption height of 82mm of the commercial workwear fabric. It shows that the antistatic warp knitted workwear fabric has excellent moisture management ability. Due to the difference in affinity between cotton and polyester, moisture can be quickly absorbed and diffused on the surface of the fabric, thereby achieving sweating from the inside to the outside.

[0066] Specific method for fabric stain resistance test: According to AATCC 130-2018t, Wansui brand corn oil is used as the pollution source. After one washing, the stain resistance level is above 4, which is 2 levels better than the stain resistance level of commercial workwear fabrics.

[0067] Specific method of fabric surface antistatic test: According to AATCC 76-2018, the voltage time is 100V-60min, the temperature is 21±2℃, and the relative humidity is 65±2%. The measured surface resistance is 7.9×10 9 ohms, which is better than the surface resistance of commercial workwear fabrics 8.6×10 13 ohms.

[0068] Example 2

[0069] A method for preparing an antistatic warp knitted workwear fabric, compared with Example 1, the difference lies in that the matte polyester DTY is replaced by +-shaped matte polyester DTY.

[0070] Example 3

[0071] A method for preparing an antistatic warp knitted workwear fabric, compared with Example 1, the difference lies in that the matte polyester DTY is replaced by a rice-shaped matte polyester DTY.

[0072] Compared with Example 1, the antistatic warp knitted workwear fabrics prepared in Examples 2 and 3 have better sweat and moisture conduction performance and anti-wrinkle performance.

[0073] The embodiments provided above are not intended to limit the scope of the present invention, and the steps described are not intended to limit the execution order thereof. Those skilled in the art may make obvious improvements to the present invention in combination with existing common knowledge, which also fall within the scope of protection defined by the claims of the present invention.

Claims

1. A method for preparing an antistatic warp knitted workwear fabric, characterized in that: Includes steps: (1) Material selection: Choose one of polyester DTY, polypropylene, cotton strands and conductive yarn as raw materials; (2) Warping: Warping the raw materials on a warping machine according to the requirements of width, cross density and threading rate according to a certain number of warps; (3) Weaving: Weaving is done using a three-bar warp knitting machine; Among them, the selection of each combing bar structure and the threading method during warping and weaving are: GB1 comb: 1-0 / 1-2 / / (m)A; GB2 comb: 1-1 / 0-0 / / (mn)B,(n)C; GB3 comb: 2-3 / 1-0 / / (m)A; m is an integer between 20 and 30, n is an integer between 1 and 2, A is polyester DTY or polypropylene, B is cotton strands, and C is a coated yarn made of cotton strands and conductive yarn.

2. The preparation method according to claim 1, characterized in that: C is a covered yarn made of 1 to 3 cotton strands and 1 to 5 conductive threads; the core yarn of the covered yarn is the cotton strand, and the covering yarn is the conductive thread.

3. The preparation method according to claim 1, characterized in that: In step (1), the specification of polyester DTY is one of 70D-80D / 60f-72f; the specification of polypropylene is one of 70D-80D / 60f-72f.

4. The preparation method according to claim 1, characterized in that: In step (1), the cotton strand has a specification of 45S / 2 to 60S / 2.

5. The preparation method according to claim 1, characterized in that: In step (1), the conductive thread has a specification of 5 to 15D.

6. The preparation method according to claim 1, characterized in that: In step (3), a three-bar high-speed tricot warp knitting machine is used for weaving; the weaving machine gauge is one of E28, E32, E36, and E40.

7. The preparation method according to claim 1, characterized in that: In step (3), the warp feed rate of GB1 is 2×1000~1200mm / rack, the warp feed rate of GB2 is 2×200~280mm / rack, and the warp feed rate of GB3 is 2×1400~1600mm / rack.

8. The preparation method according to claim 1, characterized in that: The fabric prepared in step (3) is post-finished; the post-finishing is one or more of anti-wrinkle treatment, anti-bacterial treatment and anti-fouling treatment.

9. The antistatic warp knitted workwear fabric prepared by the preparation method according to claim 1.

10. Application of the preparation method according to claim 1 in antistatic textiles.

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