KR101864422B1

KR101864422B1 - A coating agent for composite fabric and method for coating a composite fabric using the agent

Info

Publication number: KR101864422B1
Application number: KR1020170161095A
Authority: KR
Inventors: 이종선
Original assignee: (주)제이에스바이오코켐
Priority date: 2017-11-28
Filing date: 2017-11-28
Publication date: 2018-06-05

Abstract

The present invention suggests a silicone coating agent for a synthetic woven fabric, the silicone coating agent having various mixing ratios of LSR, RTV and a hardness adjusting agent according to products to be used, and a method of coating a synthetic woven fabric with the silicone coating agent, the method comprising appropriately selecting the silicone coating agent for a synthetic woven fabric having the various mixing ratios according to products to be used and performing three coating processes and a heat treatment process. The method of the present invention, as the method of coating the synthetic woven fabric with the silicone coating agent for a synthetic woven fabric described in claim 2, comprises: a coating agent material preparing step; a coating agent preparation step; a top coating step; a skin coating step; an adhesive layer coating step; a fabric laminating step; and a release paper removing step.

Description

TECHNICAL FIELD [0001] The present invention relates to a silicone coating agent for a synthetic fabric and a method for coating a silicone coating agent on the synthetic fabric,

More particularly, the present invention relates to a silicone coating material for synthetic fabric fabrics having various blending ratios of LSR, RTV and hardness modifier, and a silicone coating material for various products To a method of coating a silicone coating on a synthetic fabric that is capable of performing a silicone coating on the synthetic fabric to be used.

Conventionally, polyurethane or polyvinyl chloride (PVC) was used as a coating agent in the production of synthetic leather. The method for producing synthetic leather using polyurethane includes 20 to 80 parts by weight of solid content polymerized with polyol, chain extender, isocyanate or the like in an organic solvent such as dimethylformamide or methyl ethyl ketone, and has a viscosity of 50,000 to 150,000 cps / 25 < [deg.] &Gt; C and a coating material.

Synthetic leather produced in this way contains environmental problems due to working environment problems due to the organic solvents used in the manufacturing process and organic solvents remaining in the finished synthetic leather products.

In recent years, synthetic leather production technology using water-dispersible polyurethane which does not contain an organic solvent has been researched and developed. However, the difficulty in the manufacturing process such as processability and economical efficiency for commercialization are insufficient. It has a disadvantage that it can not.

Korean Patent No. 10-0474060 (Feb. 21, 2005)

It is an object of the present invention to provide a silicone coating material for synthetic fabric fabrics having various blending ratios of LSR, RTV and hardness control agent according to a product to be used.

Another technical problem to be solved by the present invention is to provide a method of coating a silicone coating agent on a synthetic fabric fabric which is appropriately selected according to a product to be used and subjected to three coatings and heat treatments, And the like.

In order to accomplish the above object, the silicone coating composition for synthetic fabric fabrics according to the present invention is characterized in that the composition ratio of the coating agent for skin coating to be used for the releasing paper for mat is from 40 to 80, from 20 to 60 and from 1 to 20, The composition ratio of the coating agent for skin coating to be used for release paper for handbags including bags is from 40 to 70, 30 to 60 and from 1 to 20, and the composition of the coating composition for adhesive layer coating is 20 to 50, 50 to 80 and 1 to 20, The composition ratio of the coating agent for skin coating to be used for the releasing paper for furniture is 30 to 60, 40 to 70 and 1 to 20, the composition ratio of the coating agent for the adhesive layer coating is 40 to 80, 70, 30 to 60 and 1 to 20, the composition ratio of the coating agent for skin coating to be used for the automobile seat release paper is 20 to 50, 50 to 80 and 1 to 20, and the composition ratio of the coating agent for the adhesive layer coating is 10 to 30, 70 To 90 and 1 to 20, and the composition ratio of the coating agent for skin coating to be used for a clothes dispenser is 10 to 40, 60 to 90 and 1 to 20, The constituent ratio of the coating agent for the coating on the coating layer is 20 to 50, 50 to 80 and 1 to 20, and each constituent contained in the coating agent is a sequence of RTV, LSR and hardness regulator, (RTV) and LSR (LSR) in the range of RTV and LSR, 100 weight percent of the composition is made up to 100 weight of the composition, the hardness adjuster 1 to 20 wt%.

According to another aspect of the present invention, there is provided a method of coating a synthetic fabric on a synthetic fabric, the method comprising: coating a synthetic fabric on a synthetic fabric, As a method, a coating material preparation step, a coating agent production step, a top coating step, a skin coating step, an adhesive layer coating step, a raw material fusing step and a release paper removing step are carried out. In the preparation of the coating material, release paper, liquid silicone rubber (LSR), vulcanizable rubber (RTV) at room temperature, hardness regulator and catalyst are prepared. In the coating agent production step, a plurality of coating agents are prepared at the composition ratios set forth in claim 1. In the top coating step, TT resin, which is a coating material made of dimethylsiloxane and dimethylvinylsilicon oxide, is coated on the surface of the release paper with a thickness of 30 to 200 μm using a knife of 1 to 15 mm, Lt; / RTI > for 3 to 5 minutes. In the skin coating step, an inherent skin coating coating agent selected in accordance with the product is coated on the top of the TT resin coated on the release paper in a thickness of 80 to 800 탆, and then heat-treated in a temperature atmosphere of 130 to 150 캜 for 3 to 5 minutes . In the adhesive layer coating step, an inherent adhesive layer coating agent selected in accordance with the product is coated to a thickness of 80 to 800 탆 on the skin coating of the releasing paper after heat treatment in the skin coating step. In the fabric gathering step, the release paper having been subjected to the adhesive layer coating step 150 is poured with a synthetic fabric to be coated on the surface of the product, and heat treatment is performed for 3 to 5 minutes in a temperature atmosphere of 130 to 150 ° C. In the removing of the release paper, the release paper adhered to the fabric is removed in the fabric gathering step, and then heat treatment is performed in an atmosphere of 140 to 160 ° C for 6 to 10 minutes.

As described above, the silicone coating agent for synthetic fabric fabrics according to the present invention and the method for coating a silicone coating agent on synthetic fabric fabrics can be selected from silicone coating agents having different blending ratios according to products to be used, And the heat treatment process is simpler and simpler than the conventional process, so that the process of coating the coating material on the synthetic fabric cloth as well as the manufacturing process of the coating material is simple, and the cost of the manufacturing process can be minimized.

Figure 1 shows a method of coating a silicone coating on a synthetic fabric fabric according to the present invention.
FIG. 2 shows the composition and blending ratio of the silicone coating agent for synthetic fabric fabrics according to the present invention.

In order to fully understand the present invention and the operational advantages of the present invention and the objects achieved by the practice of the present invention, reference should be made to the accompanying drawings, which are provided for explaining exemplary embodiments of the present invention, and the contents of the accompanying drawings.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Like reference symbols in the drawings denote like elements.

Figure 1 shows a method of coating a silicone coating on a synthetic fabric fabric according to the present invention.

Referring to Figure 1, a method 100 of coating a silicone coating on a synthetic fabric fabric comprises the steps of preparing a coating material, 110, a coating, 120, a top coating 130, a skin coating 140, The adhesive layer coating step 150, the fabric gathering step 160, and the release paper removing step 170 are performed.

In the coating material preparation step (110), release paper, liquid silicone rubber, vulcanizable rubber at room temperature, hardness regulator and catalyst are prepared.

Here, the releasing paper is paper adhered to the back surface to protect the adhesive surface of the adhesive tape.

Liquid Silicon Rubber (LSR) has excellent properties required as rubber and has several times better characteristics than other organic rubbers, except that the mechanical properties are relatively weak. And is used in various industries such as electric, electronic, automobile, office equipment, aviation, space industry, construction and civil engineering because it is easy to construct and process. LSR (LSR) Include PDMS polymer and dimethylsiloxane oil.

The vulcanized rubber is characterized in that the physical properties, that is, the elasticity is increased, the aging is slowed, and the volume change is not large even when the vulcanized rubber is vulcanized. Vulcanization refers to a process of increasing the elasticity and tensile strength by increasing the bond between the rubber molecules by adding sulfur to raw rubber in a narrow sense and broadly refers to a series of operations for increasing the mechanical strength by inducing covalent bonding of rubber molecules . The rubber that can be vulcanized at room temperature literally is referred to as Room Temperature Vulcanizable Rubber (RTV) based on the temperature atmosphere in which vulcanization is carried out. The RTV rubber is vulcanized in the above-described LSR, and the raw material of the RTV rubber is PDMS polymer such as LSR and dimethylsiloxane oil.

As the hardness adjusting agent, at least one of an acryl resin and an RSN resin may be used.

As the catalyst, platinum (content 0.5 to 5%) may be used.

In the coating agent preparation step 120, a coating agent for skin coating and a coating agent for adhesive layer coating having a specific compounding ratio such as RTV, LSR and hardness control agent are prepared. Here, the article to which the coating according to the present invention is to be used means, for example, one of a mat, a handbag, a bag, a furniture and an automobile seat.

FIG. 2 shows the composition and blending ratio of the silicone coating agent for synthetic fabric fabrics according to the present invention.

Referring to FIG. 2, the types of products are classified into five types as mat, handbag (+ bag), furniture, car seat, and apparel goods, and the coating agent is also divided into a coating agent for skin coating and a coating agent for adhesive layer coating. Regardless of the type of product, the composition of the coating agent for skin coating and the coating agent for adhesive layer coating are the same, but it can be seen that the blending ratios thereof are different depending on the kind of product.

The mixing ratio of the coating agent is described in terms of the weight ratio. For example, the coating composition for skin coating to be used for the release paper to be applied to the mat is 40 to 80 weight percent based on the weight ratio of RTV, LSR, 20 to 60, and 1 to 20, respectively. The weight ratio shown in FIG. 2 was prepared by compounding RTV and LSR in the range of 40 to 80 and 20 to 60, respectively. The hardness regulator was RTV and LS (RTV) LSR) in a weight ratio of 1 to 20 wt%. The description of the remaining compounding ratio is also the same.

For example, a 100 kg mixture of 40 kg of RTV and 60 kg of LSR is put into a mixing container to prepare a coating composition for skin coating to be applied to a release paper to be applied to a mat in a coating agent manufacturing step 120 After stirring the mixture, 10 kg of a hardness adjusting agent is added and the mixture is stirred to prepare a basic coating agent.

3 to 25 wt.% Of at least one of an organic pigment and an inorganic pigment is added based on 100 wt. Of the base coating agent subjected to the second agitation, and then the mixture is agitated for 1 to 2 hours to prepare a color addition coating agent.

The primary stirring, secondary stirring and tertiary stirring are conducted at a speed of 30 to 120 rpm for 1 to 3 hours.

The coating solution for skin coating to be applied to the release paper to be applied to the mat was completed by carrying out a pulverization step in which the color addition coating material subjected to the third stirring was changed to a weight of 3 ~ 15 쨉 g using a triple mill. Such a coating agent is used before use in an actual working room, and may be used at a ratio of 1 to 12 parts by weight based on 100 parts by weight of the coating agent for skin coating.

Since the above description applies to the manufacturing process and the composition ratio of the remaining coating agent shown in FIG. 2, the description of the manufacturing process of the other coating agent and the ratio of the constituent components will be omitted.

In the top coating step 130, a TT resin, which is a coating material made of dimethylsiloxane and dimethylvinyl-silicon oxide, is coated on the surface of the release paper with a thickness of 30 to 200 탆 using a knife of 1 to 15 mm, Heat treatment is performed for 3 to 5 minutes in a temperature atmosphere of 150 ° C.

In the skin coating step 140, an inherent skin coating coating agent selected in accordance with the product is coated on the top of the TT resin coated on the releasable paper in a thickness of 80 to 800 탆, and then coated in a temperature atmosphere of 130 to 150 캜 for 3 to 5 minutes Lt; / RTI >

In the adhesive layer coating step 150, a unique adhesive layer coating agent selected in accordance with the product is coated to a thickness of 80 to 800 탆 on the skin coating of the release paper on which the heat treatment is completed in the skin coating step 140.

In the fabric gathering step 160, the release paper having been subjected to the adhesive layer coating step 150 is laminated with the synthetic fabric to be coated on the surface of the product, and then heat treatment is performed in a temperature atmosphere of 130 to 150 ° C for 3 to 5 minutes. The synthetic fabric fabrics herein include all synthetic fabrics such as polyester, nylon, cotton and hemp.

In the release sheet removing step 170, after removing the release sheet adhered to the raw material in the raw material spreading step 150, heat treatment is performed for 6 to 10 minutes in an atmosphere of 140 to 160 ° C.

It is preferable that the coatings in the top coating step 130, the skin coating step 140 and the raw fabric gathering step 160 are all performed by a roll coating method.

The heat treatment performed in the top coating step 130, the skin coating step 140, the fabric gathering step 160, and the release paper removing step 170 may be performed using any one of a thermal chamber tunnel method and a conveyor tunnel method.

When using the thermal chamber tunneling method, the pressure in the heat chamber should be equal to the atmospheric pressure and the high temperature fermentation fluid capable of withstanding 160 to 300 ° C should be used. The conveyor tunnel method uses an IR system and a far-infrared system when passing through a conveyor tunnel by an electric heating method.

In the experiment of the effect of the present invention, the length of the tunnel was applied to both the thermal chamber tunnel type and the conveyor tunnel type under the conditions shown in the following table.

Process step Tunnel length (meter) In the top coating step 130, 10-17 In the skin coating step 140, 10-17 (160) 15-25 In the step of removing the release paper (170) 10-20

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the scope of the present invention.

110: Coating material preparation step
120: coating agent preparation step
130: Top coating step
140: Skin coating step
150: adhesive layer coating step
160: Fabric preparation step
170: Step of removing the release paper

Claims

The composition ratio of the coating agent for skin coating to be used for the mat release paper is 40 to 80, 20 to 60 and 1 to 20, the composition ratio of the coating agent for the adhesive layer coating is 20 to 50, 50 to 80 and 1 to 20,
The composition ratio of the coating agent for skin coating to be used for the release paper for handbags including the bag is 40 to 70, 30 to 60 and 1 to 20, the composition ratio of the coating agent for the adhesive layer coating is 20 to 60, 40 to 80 and 1 to 20,
The composition ratio of the coating agent for skin coating to be used for furniture release paper is 30 to 60, 40 to 70 and 1 to 20, the composition ratio of the coating agent for adhesive layer coating is 40 to 70, 30 to 60 and 1 to 20,
The composition ratio of the coating agent for skin coating to be used for the car sheet releasing paper is 20 to 50, 50 to 80 and 1 to 20, the composition ratio of the coating agent for the adhesive layer coating is 10 to 30, 70 to 90 and 1 to 20,
The composition ratio of the coating agent for skin coating to be used in the clothes miscellaneous release paper is 10 to 40, 60 to 90 and 1 to 20, the composition ratio of the coating agent for the adhesive layer coating is 20 to 50, 50 to 80 and 1 to 20,
Each of the components included in the coating agent is a sequence of an RTV, an LSR and a hardness modifier,
(RTV) and the LSR (LSR) in the range of the RTV and the LSR in each of the coating materials, 100 weight of the composite is prepared, and the hardness Wherein the control agent is synthesized to have a weight of 1 to 20 wt%.

The method of claim 1,
The LSR is one of PDMS polymer and dimethylsiloxane oil,
The RTV is obtained by vulcanizing the material of the LSR at room temperature,
Wherein the hardness modifier comprises at least one of an acrylate resin and an RSN resin.

A method for coating a silicone coating agent on a synthetic fabric fabric which is coated on a synthetic fabric fabric with a silicone coating agent for synthetic fabric fabrics according to claim 2,
Preparing a coating material for preparing a releasing paper, a liquid silicone rubber (LSR), a rubber vulcanizable at room temperature (RTV), a hardness regulator and a catalyst;
A coating agent preparation step of preparing a plurality of coating agents at a composition ratio according to claim 1;
TT resin, a coating material made of dimethylsiloxane and dimethylvinylsilicon oxide, was coated on the surface of the release paper with a thickness of 30 to 200 μm using a knife of 1 to 15 mm, A top coating step of performing heat treatment for 5 minutes to 5 minutes;
A skin coating coating agent is coated on the upper surface of the TT resin coated on the release paper in a thickness of 80 to 800 탆 and then heat treated in a temperature atmosphere of 130 to 150 캜 for 3 to 5 minutes. step;
An adhesive layer coating step of coating an inherent adhesive layer coating agent selected in accordance with the product on the skin coating of the releasing paper having been heat-treated in the skin coating step to a thickness of 80 to 800 μm;
A fabric dipping step in which a release paper after the adhesive layer coating step 150 is poured with a synthetic fabric to cover the surface of the product, and then heat treatment is performed in a temperature atmosphere of 130 to 150 ° C for 3 to 5 minutes; And
Removing the release paper adhered to the fabric in the fabric gathering step, and then performing the heat treatment for 6 to 10 minutes in an atmosphere at 140 to 160 ° C; To
&Lt; / RTI > wherein the silicone coating is applied to the composite fabric fabric.

4. The method according to claim 3,
A first agitating step of producing a mixture of 100 parts by weight in the range of the composition ratios as claimed in claim 1 in the range of RTV and LSR and stirring in an agitator;
A second agitation step of adding 1 to 20 parts by weight of a hardness modifier to 100 parts by weight of the mixture subjected to the first agitation step, followed by stirring;
A third stirring step in which at least one of a large organic pigment and an inorganic pigment is added in an amount of 3 to 25 parts by weight to 100 parts by weight of the composite obtained through the second stirring step; And
A grinding step of grinding particles constituting the composite through a third stirring step to a size of 3 to 15 쨉 g; To
&Lt; / RTI > wherein the silicone coating is applied to the composite fabric fabric.

4. The method of claim 3,
Wherein the top coating step, the skin coating step and the fabric gathering step are carried out by a roll coating method.