Antistatic gold and silver stamping fabric and preparation method thereof

Abstract

The invention relates to the technical field of textiles, in particular to an anti-static gold and silver stamping fabric and a preparation method thereof. The fabric comprises a fabric base material layer, a glue layer and a transfer printing metal layer which are arranged in a stacked mode, and gold and silver stamping processing is achieved through the transfer printing metal layer. The preparation raw materials of the adhesive layer comprise an adhesive material and heat-conducting and electric-conducting particles; the mass ratio of the sizing material to the heat-conducting and electric-conducting particles is (90-99): (1-10). According to the technology, in the gold and silver stamping processing process of the fabric, the electric conduction and heat conduction particles are added into the glue, so that the fabric is endowed with an excellent anti-static function while heat reflection warm keeping is achieved, the fabric can pass two tests of the static voltage half-life period and the charge surface density at the same time, and the durable washing performance can be kept. The fabric is excellent in comprehensive performance and can be applied and popularized in the textile field.

Description

Technical Field

[0001] The invention relates to the field of textile technology (IPC classification number: D06N), and in particular to an antistatic gold and silver stamping fabric and a preparation method thereof. Background Art

[0002] With the improvement of national economy and quality of life, consumers have put forward higher requirements for the comfort and aesthetics of daily fabrics. Hot stamping and silvering fabrics reflect heat and keep warm in autumn and winter clothing. They are also fashionable and visually different, and are welcomed by many brands. However, hot stamping and silvering technology is generally applied to chemical fiber fabrics, which have a relatively low moisture content and are prone to static electricity. The wearing experience in winter is relatively poor, which limits the use of hot stamping and silvering fabrics.

[0003] At present, the main way to solve the problem of static electricity is to weave in conductive yarn or add antistatic agents in the finishing process. However, if metal conductive yarn is woven in, the fabric will feel harder, and the conductive effect of weaving in polyester or nylon base is average. It is difficult to pass the half-decay antistatic test. At the same time, it is difficult to keep the woven material consistent with the main material of the fabric, resulting in faint conductive yarn stripes and the fabric cannot be pure color. Although the process of adding antistatic agents in the finishing process is relatively simple and the price is relatively low, the water resistance is poor.

[0004] Chinese patent CN201610445519.X discloses a lace fabric with metallic luster and a preparation method thereof, wherein silk fiber and metal fiber are used as the base layer for preparing the fabric; the lace grey cloth is immersed in a chitosan / titanium dioxide solution to obtain the lace fabric. The lace fabric prepared by this method has antistatic properties and a very strong metallic luster; however, the process of this technology is cumbersome and has poor water washability. Chinese patent CN201710717764.6 discloses a moisture-conducting and quick-drying knitted weft-knitted fabric and a processing technology thereof. The grey cloth used for the fabric is weft-knitted from at least two yarns with different DPFs, and the finished fabric is obtained by grey cloth weaving → pretreatment → dyeing → reduction washing → high temperature setting → reduction washing → finished product setting. However, this process technology mainly improves the unidirectional moisture conduction and quick-drying functions of the fabric, and the fabric still has the problem of poor antistatic performance.

[0005] Based on the above background, the fabric products currently on the market still have technical problems such as poor washability and anti-static properties; single function and inability to provide long-lasting warmth; or complicated process and difficulty in mass production. Summary of the invention

[0006] This technology adds conductive and thermally conductive particles to the glue during the hot stamping and silvering process of the fabric, which achieves heat reflection and warmth retention while giving the fabric excellent anti-static function. It can pass both the static voltage half-life and charge surface density tests and maintain durable washability. The fabric has excellent overall performance and can be used and promoted in the textile field.

[0007] The first aspect of the present invention provides an antistatic hot stamping and silvering fabric, which comprises a fabric base material layer, a glue layer and a transfer metal layer from bottom to top, and the hot stamping and silvering processing is achieved through the transfer metal layer.

[0008] In some preferred embodiments, the material of the fabric base layer includes at least one of polyester, nylon, acrylic, vinylon, and polypropylene.

[0009] In order to improve the antistatic property, thermal insulation performance and water washing resistance of the fabric, in some preferred embodiments, the raw materials for preparing the adhesive layer include adhesive and thermal conductive and electrically conductive particles; the mass ratio of the adhesive and the thermal conductive and electrically conductive particles is (90-99): (1-10). The present invention sets the fabric structure as a fabric base material layer, an adhesive layer and a transfer metal layer, and adds specific thermal conductive and electrically conductive particles to the adhesive layer; so that the thermal conductive and electrically conductive particles are protected between the fabric and the gold film or silver film, and the water washing resistance of the fabric is significantly improved.

[0010] Further preferably, the present invention can reduce the amount of thermally conductive and electrically conductive particles used and increase the glue ratio, thereby improving the adhesion strength of the hot stamping and silver stamping films while reducing costs. The mass ratio of the glue to the thermally conductive and electrically conductive particles is (92-95): (5-8).

[0011] Most preferably, the mass ratio of the rubber material to the thermally and electrically conductive particles is 93:7.

[0012] In some preferred embodiments, the thermally conductive and electrically conductive particles are graphene; the graphene has a particle size D50 < 5 μm and a moisture content < 3%. The present invention finds that graphene of this specification can be evenly dispersed in the rubber material, thereby forming a continuous conductive path on the surface of the fabric, improving the electron mobility inside the fabric, inhibiting the generation of static charge and its accumulation on the fabric, thereby solving the problem of static electricity in chemical fiber fabrics.

[0013] Preferably, the conductivity of the graphene is less than 0.07Ω·cm.

[0014] The graphene can be commercially available, such as the conductive graphene powder of Hangzhou Gaoxun Technology Co., Ltd., with the product model being CTG.

[0015] In some preferred embodiments, the raw materials for preparing the rubber compound include 2-8 parts of film-forming substance, 0.4-1.5 parts of curing agent and 1-7 parts of diluent, calculated by weight.

[0016] Further preferably, in parts by weight, the raw materials for preparing the rubber compound include 5 parts of film-forming substance, 1 part of curing agent and 4 parts of diluent.

[0017] The film-forming material may be commercially available, such as HDBA-7015 produced by Shanghai Huide Technology Co., Ltd.

[0018] The specific composition of the HDBA-7015 product is: based on volume percentage, polyurethane resin 62-68%, toluene 18-24%, and butanone 13-15%.

[0019] In some preferred embodiments, the curing agent is at least one of an isocyanate curing agent, a polyamide curing agent, and an alkyl acid curing agent.

[0020] More preferably, the curing agent is an isocyanate curing agent, more preferably polyisocyanate.

[0021] The polyisocyanate may be commercially available, such as AK-75 curing agent product of Aekyung Chemical.

[0022] In some preferred embodiments, the diluent includes at least one of ethyl acetate, propyl acetate, butyl acetate, hexyl acetate, cyclohexanone, and propylene glycol methyl ether acetate.

[0023] More preferably, the diluent is ethyl acetate.

[0024] The present invention sets a specific resin bonding layer between the fabric base material and the hot stamping and silver stamping film, which can greatly improve the bonding force between the layers, thereby avoiding separation between the layers to the greatest extent, especially after multiple washings, it can still maintain a firm bond, thereby exerting a lasting warm and antistatic effect. The fabric of the present invention is particularly suitable for winter clothing, such as down jackets. At the same time, the present invention only needs to add conductive and thermal conductive particles to the rubber material and then apply it to the surface of the fabric base material to improve its comprehensive performance. There is no need to add additional antistatic agents or change the weaving structure of the fabric base material. While improving the washability, antistatic and warm-keeping properties of the fabric, the uniformity of the fabric appearance can be maintained, and the fabric can be pure color without the interference of mixed colors.

[0025] The second aspect of the present invention provides a process for preparing an antistatic hot stamping and silvering fabric, and the steps for preparing the fabric include:

[0026] S1. Preparation of glue for use: According to the above formula, add the thermally conductive and electrically conductive particles to the glue in proportion to prepare the required bonding glue;

[0027] S2. Glue on the film: Through a customized specific pattern screen, the glue is transferred to the corresponding target position on the film to obtain a glue coating. The glue application amount is 5-20g / m 2 ; preferably 10g / m 2

[0028] S3. Drying glue: through the oven, let the glue in a semi-dry state and reach the optimal viscosity; the oven temperature is set at 80-90 ° C; the machine speed is 5-15 yards per minute, the drying time in the machine is 50-70s, and the viscosity is controlled at 1500-2000cps;

[0029] S4. Composite transfer: Use hot stamping and silver stamping equipment to transfer the film that has completed the S3 process to the fabric through hot pressing; the hot pressing transfer temperature is set at 140-150°C, and the transfer speed is 10-15 yards per minute;

[0030] S5. Insulation and aging: Insulation and aging curing and cooling treatment; curing temperature 45-55 ° C, curing time 36-54 hours; then natural cooling, cooling time 10-15 hours;

[0031] S6. Peeling and separating the film: Use a separator to separate the film from the fabric to obtain the finished antistatic hot stamping and silver hot stamping fabric.

[0032] Beneficial effects:

[0033] The present invention provides an antistatic hot stamping and silver stamping fabric and a preparation method thereof, which has the following advantages:

[0034] (1) The fabric structure of the present invention comprises a fabric base material layer, an adhesive layer and a transfer metal layer, and specific thermally conductive and electrically conductive particles are added to the adhesive layer; thus, the thermally conductive and electrically conductive particles are protected between the fabric and the gold film or the silver film, thereby avoiding the reduction of the antistatic function after repeated washing, and significantly improving the washability of the fabric.

[0035] (2) The present invention preferably uses a specific graphene powder that can be evenly dispersed in the rubber material and coated on the fabric to significantly improve the antistatic property of the fabric; and the rubber layer is not easy to fall off after washing, thus giving the fabric a lasting antistatic property.

[0036] (3) The fabric prepared by the present invention is not only washable and antistatic, but also has far-infrared performance. The far-infrared emissivity of the fabric reaches more than 0.88%, and the far-infrared radiation temperature rise value is ≥1.4°C, which has a good heat reflection and warmth-keeping effect; it can meet the use requirements of fabrics such as down jackets.

[0037] (4) The present invention does not require the addition of an additional antistatic agent, nor does it require the change of the weaving structure of the fabric base material, and can maintain the uniformity of the fabric appearance, so that the fabric can be pure color without interference from other colors; during processing, only a pattern is set on the fabric base material according to the processing requirements, and then a glue layer is applied, and gold and silver stamping are performed to obtain the target pattern, and the coating is not easy to separate, and the operation is flexible.

[0038] (5) The raw materials of the present invention are easily available, the process is simple, the technology is highly operable, and the cost is low, and mass production can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 .Actual picture of the antistatic hot stamping and silver stamping fabric prepared in Example 1. DETAILED DESCRIPTION

[0040] Example 1.

[0041] In a first aspect, the present embodiment provides an antistatic hot stamping and silvering fabric. The fabric is stacked from bottom to top as a fabric base material layer, an adhesive layer and a transfer metal layer. The hot stamping and silvering processing is achieved through the transfer metal layer.

[0042] The material of the fabric base material layer is polyester.

[0043] The raw materials for preparing the adhesive layer include adhesive and thermally conductive and electrically conductive particles; the mass ratio of the adhesive to the thermally conductive and electrically conductive particles is 93:7.

[0044] The thermally and electrically conductive particles are graphene, with a particle size D50 of less than 5 μm and a water content of less than 3%; the graphene comes from Hangzhou Gaoxun Technology Co., Ltd., and the product model is CTG.

[0045] In parts by weight, the raw materials for preparing the rubber compound include 5 parts of film-forming material, 1 part of curing agent and 4 parts of diluent.

[0046] The film-forming substance is a mixture of polyurethane resin, toluene and butanone; it is derived from the HDBA-7015 product of Shanghai Huide Technology Co., Ltd.

[0047] The curing agent is polyisocyanate, which is derived from the AK-75 curing agent product of Aekyung Chemical.

[0048] The diluent is ethyl acetate.

[0049] A second aspect of the present embodiment provides a process for preparing an antistatic hot stamping and silvering fabric, and the steps for preparing the fabric include:

[0050] S1. Preparation of glue for use: According to the above formula, add the thermally conductive and electrically conductive particles to the glue in proportion to prepare the required bonding glue;

[0051] S2. Glue on the film: Through a customized specific pattern screen, the glue is transferred to the corresponding target position on the film to obtain a glue coating. The glue application amount is 10g / m 2 ;

[0052] S3. Drying glue: pass through the oven to make the glue semi-dry and reach the optimal viscosity (1500-2000cps); the oven temperature is set at 85°C; the machine speed is 10 yards / min, the drying time in the machine is 65s, and the viscosity is controlled at;

[0053] S4. Composite transfer: Use hot stamping equipment to transfer the film that has completed the S3 process to the fabric through hot pressing; the hot pressing transfer temperature is set at 145°C and the transfer speed is 12-13 yards per minute;

[0054] S5. Insulation and aging: Insulation and aging curing and cooling treatment; curing temperature 50 ° C, curing time 48 hours; then natural cooling, cooling time 12 hours;

[0055] S6. Peeling and separating the film: Use a separator to separate the film from the fabric to obtain the finished antistatic hot stamping and silver hot stamping fabric.

[0056] Performance Testing

[0057] 1. Antistatic

[0058] With reference to GB / T 12703.1-2021, the static voltage half-life of the fabric of the embodiment was tested; the test conditions were temperature 20.1°C and relative humidity 38.0%.

[0059] Referring to GB / T 12703.2-2021, the charge surface density of the fabric of the embodiment was tested; the test conditions were temperature 20.0°C, relative humidity 39.3%, and humidity conditioning time 24h.

[0060] The test results are: static voltage is 0.87kV, static voltage half-life is 4.7s, and charge surface density is 5.6μC / m 2 The antistatic performance of the fabric in the embodiment is excellent.

[0061] 2. Warmth

[0062] With reference to GB / T 30127-2013, the far-infrared performance of the fabrics of the examples was tested.

[0063] The test results are: the far-infrared emissivity is 0.92%, the far-infrared radiation temperature rise is 2.0℃, the fabric has far-infrared properties and strong warmth retention functionality.

Claims

1. An antistatic hot stamping and silver stamping fabric, characterized in that: The fabric includes a fabric base material layer, a glue layer and a transfer metal layer which are stacked, and the hot stamping and silver stamping processing is achieved through the transfer metal layer; The raw materials for preparing the adhesive layer include adhesive and thermally conductive and electrically conductive particles; the mass ratio of the adhesive to the thermally conductive and electrically conductive particles is (90-99): (1-10).

2. The antistatic hot stamping and silver stamping fabric according to claim 1, characterized in that: The thermally and electrically conductive particles are graphene; the graphene has a particle size D50 of less than 5 μm and a water content of less than 3%.

3. The antistatic hot stamping and silver stamping fabric according to claim 2, characterized in that: In parts by weight, the raw materials for preparing the rubber compound include 2-8 parts of film-forming material, 0.4-1.5 parts of curing agent and 1-7 parts of diluent.

4. The antistatic hot stamping and silver stamping fabric according to claim 3, characterized in that: The film-forming substance comprises at least one of acrylic resin, polyurethane resin, epoxy resin, phenolic resin, alkyd resin, hydroxyl resin and amino resin.

5. The antistatic hot stamping and silver stamping fabric according to claim 4, characterized in that: The curing agent is at least one of an isocyanate curing agent, a polyamide curing agent, and an alkyl acid curing agent.

6. The antistatic hot stamping and silver stamping fabric according to claim 5, characterized in that: The film-forming substance comprises polyurethane resin, and the volume concentration of the polyurethane resin in the film-forming substance is 60-70%.

7. The antistatic hot stamping and silver stamping fabric according to claim 1, characterized in that: The diluent includes at least one of ethyl acetate, propyl acetate, butyl acetate, hexyl acetate, cyclohexanone, and propylene glycol methyl ether acetate.

8. The antistatic hot stamping and silver stamping fabric according to claim 1, characterized in that: The mass ratio of the rubber material to the thermally and electrically conductive particles is (92-95):(5-8).

9. A method for preparing the antistatic hot stamping and silver stamping fabric according to claim 1, characterized in that: The steps of fabric preparation include: S1. Glue is prepared for use; S2. Glue on membrane; S3. Drying glue; S4. Composite transfer; S5. Insulation and maturation; S6. Peel off the film.

10. The method for preparing the antistatic hot stamping and silver stamping fabric according to claim 9, characterized in that: The conditions for the composite transfer in step S4 are: the hot pressing transfer temperature is set at 140-150° C., and the transfer speed is 10-15 yards per minute.

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