JPH0579496B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention can be applied to flooring materials, wall materials, ceiling materials, system buses, system kitchens, furniture exteriors, vehicle interiors,
The present invention relates to a novel decorative film-like surface material that can be used for the exterior of home appliances, and a method for producing the same.

[Conventional technology]

Conventional floor materials, wall materials, ceiling materials, etc. are generally made by laminating printed vinyl chloride films or sheets onto the base material, but the printed patterns are flat and have a transparent or voluminous feel. There is no
Compared to natural materials, it had a strong impression of being flimsy and cheap.

Recently, vinyl chloride plastisol is applied onto a vinyl chloride sheet, and colored vinyl chips are sprinkled on top of it, then heated and compressed to gel the vinyl chloride plastisol and roll the chips to create crushed stone handles, etc. The method is becoming popular.

[Problem to be solved by the invention]

However, the above method requires an extremely large amount of thermal energy and a long time to gel the vinyl chloride plastisol, resulting in a problem of high production costs.

Furthermore, the pattern produced by rolling PVC color chips is characterized by the ability to produce a deeper and more solid appearance than printing methods, but it also produces subtle color tones such as uneven shading, blurring, blurring, and clouding, similar to natural stone. There is a limit to the fact that there is no variation and only monotonous and uniform patterns can be produced.

The present invention focuses on the problems and limitations of the prior art, and provides a decorative surface material that can be manufactured at low cost and that can easily create colors and patterns similar to natural stones such as granite and marble, and a method for manufacturing the same. The purpose is to provide

[Means to solve the problem]

The decorative surface material of the present invention that meets this purpose includes a transparent film, a colored adhesive layer provided on one side of the film, and different layers on and in the colored adhesive layer. It consists of a plurality of types of plastic chips with different softening points that are fixed in a fluid state.

In addition, the method for producing a decorative surface material of the present invention involves coating a transparent film with a colored adhesive in a uniform thickness, and applying a plurality of types of plastic chips having different softening points on the colored adhesive layer. After drying the colored adhesive layer, the film to which the plurality of types of plastic chips are bonded is heated and compressed to cause the plurality of types of plastic chips to flow in different states.

In the method of the present invention, a substantially transparent colored adhesive layer is provided with a uniform thickness on one side of a transparent film substrate. The film base material only needs to be substantially transparent, and may be either colorless and transparent or colored and transparent. In the case of colored transparent film,
The color may be different from the color of the colored adhesive;
If they are different, the color of the film layer and the color of the adhesive layer can be mixed to create a complex color shade. The material of the film is not particularly limited as long as it can support the colored adhesive layer.

A plurality of types (for example, 2 to 5 types) of plastic chips having different softening points are sprinkled onto the colored adhesive layer.

In this state, the colored adhesive layer is dried, for example with hot air. Hot air drying is for example 50~120℃
The adhesive layer is once fixed.

For example, the film to which this chip is glued is
Heat at ~300℃ for 2-20 minutes, pressure 3-100Kg/cm ²
Compress with . Through this heating and compression, chips with a low softening point melt and flow easily, while chips with a high softening point are difficult to melt and flow, so the melted chips with a low softening point move around the melted chips with a high softening point. To avoid the melted chips having a high softening point, for example, flow in a spiral shape or a fireball shape,
The resulting film material has a characteristic pattern with different fluid states. In other words, the decorative surface of the present invention has a color tone and pattern similar to natural stone, as the melted chips with a low softening point flow in a characteristic random fluid state and are intricately intertwined with the melted chips with a high softening point. wood is obtained.

The adhesive used here needs to be one that has high heat resistance and does not lose its adhesion to the plastic even during heat compression. If you use an adhesive made of thermoplastic resin or a resin with poor heat resistance, the chips and adhesive will flow as they move in parallel during compression, making it difficult to create flow patterns. The appropriate adhesive film thickness is 10 to 300μ when wet (5 to 150μ when dry); if the film thickness is less than 10μ, the adhesive strength of the chips will be poor, and if it is less than 300μ, most of the chips will be included in the adhesive. Because the material is mixed, it is difficult to create a flowing pattern even when compressed.

The resin components of the colored adhesive used here are resins made of polyurethane, vinyl urethane, polystyrene, polyester, polyamide, polyacrylic ester, ethylene vinyl acetate, modified vinyl, vinyl acetate acrylic, epoxy, melamine, isocyanate, compounds, etc. It contains a hydroxyl group, a carboxyl group, a primary amine group, a secondary amine group, a tertiary amine group, a methoxy group, a methylol group, a double bond, a triple bond, etc. as a functional group, and is self-curing. epoxy, amine, isocyanate,
Suitable materials are those that can be crosslinked and cured with a curing agent such as melamine.

The softening point of plastic chips is 60~ for low temperature products.
110℃, 110 to 160℃ for medium temperature products, 150 to 300 for high temperature products
℃ is appropriate, and it is also possible to add inorganic particles as a substitute for high temperature products. As the plastic material, nylon, polyester, polyethylene, vinyl chloride, polypropylene, vinylon, celluloid, polystyrene, polyurethane, polyimide, etc. can be used, and the chips can be selected according to their softening points.

The size of the chips is large for low-temperature products, with a particle size of 2 to 2.
10 mm is preferable, and medium temperature products have a particle size of 0.5 to 3.
mm, and beads, chips, and granules with a particle size of 0.1 to 1.5 mm are preferable for high-temperature products.

The heat compression is preferably carried out using a roll compactor such as a calender roll, at a temperature of 60 to 300°C, preferably 80 to 250°C, and a pressure of 3 to 100 kg/ ^cm2 , and is subject to changes in temperature and pressure. Since the flow pattern (for example, a spiral pattern) changes as the flow pattern changes, it is preferable to control the temperature and pressure according to the desired flow pattern.

The film-like decorative surface material created as described above, on which a characteristic flowing natural stone-like pattern is precipitated, can be pasted onto the surface of a base material such as synthetic resin, metal, wood, gypsum board, concrete, etc. By this,
Used for indoor and outdoor flooring, walls, ceiling materials, system baths, system kitchens, furniture, vehicle interiors, and the exteriors of home appliances.

〔Example〕

Example 1 Nikazole FX922A100 manufactured by Nippon Carbide Industries Co., Ltd. was applied to a transparent vinyl chloride film with a thickness of 300μ.
3 parts of Denacol EX614 (manufactured by Nagase Kasei Co., Ltd.) and 1 part of toned acramine pigment were added to each part, stirred well, and coated with a colored adhesive with a thickness of 50 to 80 μm, the viscosity of which was adjusted to 200 to 800 cps. .

From above, the softening point is 90-100℃ and the average particle size is 5mm.
nylon color chips with a softening point of 100-110°C and an average particle size of 3 mm, and vinyl chloride color chips with a softening point of 120-130°C and an average particle size of 2-3 mm, a softening point of 170-180°C. 1,000 to 100,000 polyester transparent chips with an average particle size of 1 mm.
It was spread and adhered to a density of grains/m ² . After drying at 80℃ for 3 minutes, heating at 140℃ for 20 minutes,
Compressed with calender rolls at 160℃ and pressure 30Kg/ ^cm2 .
Rolled.

The membrane-like decorative surface material produced in this way had a characteristic flow pattern that was extremely close to that of natural stone.

Example 2 100 parts of Kotax 730 manufactured by Toray Industries, Inc. was applied to a transparent vinyl chloride film with a thickness of 300μ.
Add 3 parts of Denacol EX614 manufactured by Nagase Kasei Co., Ltd. and 1 part of toned acramine pigment, stir well, and adjust the viscosity to 20 to 100 cps.
Coated with a thickness of .

From above, the softening point is 90-100℃ and the average particle size is 5mm.
nylon color chips with a softening point of 100-110℃ and an average particle size of 3 mm, and vinyl chloride color chips with a softening point of 120-130℃ and an average particle diameter of 2-3 mm, with a softening point of 170-180℃. Average particle size is 1
mm polyester transparent chips, 1000~10000
It was spread and adhered to a density of grains/m ² . After drying at 80℃ for 3 minutes, heating at 140℃ for 20 minutes,
Compressed with calender rolls at 160℃ and pressure 30Kg/ ^cm2 .
Rolled.

The membrane-like decorative surface material produced in this way had a characteristic flow pattern that was extremely close to that of natural stone.

〔Effect of the invention〕

As explained above, according to the present invention, compared to the conventional method using vinyl chloride plastisol, it is possible to obtain a decorative surface material at a low cost with extremely less thermal energy, and it is possible to obtain a decorative surface material with an extremely deep surface like that of natural stone. It is possible to easily create tasteful color tones and flowing patterns, and it is also possible to adjust these subtle color tones and patterns in various ways.

Therefore, by applying the decorative surface material according to the present invention to the interior and exterior of various building materials, various devices, appliances, furniture, etc., the value of these interior and exterior materials can be greatly increased.

Claims (1)

[Scope of Claims] 1. A transparent film, a colored adhesive layer provided on one surface of the film, and a transparent film fixed on and in the colored adhesive layer in mutually different fluid states. Furthermore, a decorative surface material comprising a plurality of types of plastic chips having different softening points. 2. A colored adhesive was applied to a uniform thickness on a transparent film, multiple types of plastic chips with different softening points were sprinkled on the colored adhesive layer, and the colored adhesive layer was dried. A method for manufacturing a decorative surface material, characterized in that the film to which the plurality of types of plastic chips are bonded is then heated and compressed to cause the plurality of types of plastic chips to flow in different states.