JPH0579495B2 - - 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,
This invention relates to a novel decorative film-like surface material that can be used for the exterior of home appliances, etc., 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 deep shading patterns similar to those of natural stones such as granite and marble. The purpose is to provide a manufacturing method.

[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 a portion of the colored adhesive layer on the colored adhesive layer. a chip made of a water-absorbing material sprinkled so as to be buried in the chip, a colored adhesive layer is partially absorbed in the chip, and a part of the chip that is not buried in the colored adhesive layer is It consists of something that is pressed onto a colored adhesive layer around the chip.

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 placing chips made of a water-absorbing substance on the colored adhesive layer. The colored adhesive layer of the chip is sprayed so as to be partially buried in the colored adhesive layer, the colored adhesive layer is partially absorbed by the chip, and the colored adhesive layer of the chip is dried. The method consists of pressing the part onto the colored adhesive layer of the peripheral part of the chip.

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.

The resin components of the colored adhesive used here are resins made of polyurethane, vinyl urethane, polystyrene, polyester, polyamide, polyacrylate, 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.

When chips made of a water-absorbing substance are spread on the colored adhesive layer, the water-absorbing power of the chips causes the colored adhesive to be absorbed into the chips from the areas in contact with the colored adhesive. The amount of colored adhesive absorbed into the chip differs between the areas where the colored adhesive is in contact and the areas where it is not, so it mixes with the hue of the chip itself.
Each color has a slightly different nuance.

Here, water-absorbing substances include, for example, water-absorbing polymers, paper, straw, palm, reed, thatch, palm, straw,
It consists of rattan, wood, cloth, fiber bundles, etc.

By scattering chips made of a water-absorbing substance on the colored adhesive layer as described above and fixing the adhesive layer by drying with hot air at, for example, 50 to 120°C, the color changes due to absorption of the colored adhesive into the chips. is fixed in a state where it gradually changes.

Furthermore, the film to which this chip is adhered is heated, for example, at 80 to 250°C for 5 to 20 minutes, and then
By compressing at 100 kg/cm ² (compressing from both sides), the non-buried portion of the colored adhesive layer of the chip is pressed onto the colored adhesive layer surrounding the chip. If the chip is made of plastic, it may be rolled at the same time as crimping. The non-buried part (exposed part) of the colored adhesive layer of the chip remains essentially the same color as the chip itself, but by being pressed onto the colored adhesive layer around the chip, it looks like granite or marble. The decorative surface material according to the present invention has a deep shading pattern.

The transparent colored adhesive used in the present invention is preferably a resin with good permeability and a water-based emulsion having a viscosity of 5 to 20,000 cps, preferably 50 to 2,000 cps. If the viscosity is more than 20,000 cps, it will be difficult for the adhesive to penetrate into the chip, and if it is less than 50 cps, the permeability will be too high and the entire chip will be colored, which is not suitable. Further, solvent-based adhesives are also undesirable because their permeability is too high.

The thickness of the adhesive to be applied evenly at first is 10~
300μ is appropriate. If it is less than 10μ, the adhesive strength of the chip becomes too low, and if it is more than 300μ, the absolute value of the film thickness is too large, making it difficult to produce a hue difference due to absorption of the adhesive into the chip.

In addition, chips made of water-absorbing substances are available in two varieties with different sizes, shapes, colors, specific gravity, and water-absorbing properties.
When a mixture of ~20 varieties is used, the adhesive-absorbing part and the exposed part of the chip change forever, creating a pattern with subtle differences in hue, making it more similar to natural stone. The size of the chips is granules or beads with a particle size of 0.5 to 10 mm,
Fragments are appropriate. Among the water-absorbing substances mentioned above, particularly suitable materials for the chips include water-absorbing polymers, pieces of wood, pieces of paper, torn cloth, and fiber bundles.

The film-like decorative surface material with a natural stone pattern with subtle color differences created as described above can be pasted onto the surface of a base material such as synthetic resin, metal, wood, gypsum board, or concrete. It is used for indoor and outdoor flooring, wall materials, ceiling materials, system baths, system kitchens, furniture, vehicle interiors, and the exteriors of home appliances.

〔Example〕

1 to 3 schematically show the manufacturing process of a decorative surface material according to the present invention.

FIG. 1 shows a state in which a colored adhesive layer 2 is coated on one surface of a transparent film 1 to a uniform thickness. As shown in FIG. 2, chips 3a and 3b made of a water-absorbing substance (in this example, chips 3a made of wood chips and chips 3b made of a water-absorbing polymer) are sprinkled onto the colored adhesive layer 2, as shown in FIG. The chips 3a, 3b partially sink and are buried in the adhesive layer 2 due to their own weight, and the adhesive is partially absorbed into the chips 3a, 3b. In this state, when the chips are dried and fixed, and the portions of the chips not buried in the adhesive layer are rolled or pressed, a decorative surface material 4 as shown in FIG. 3 is obtained. The surface material 4 shown in FIG. 3 is a decorative surface material according to the present invention. Various construction materials, various devices,
Used for exterior decoration of appliances, furniture, etc. In addition, if you want the decorative surface to have irregularities, for example to provide a non-slip function, use the rolled side 4 with irregularities.
It is also possible to set b to the outer surface side.

Next, a more specific example will be described.

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 100 to 500 cps. .

Wood chips with a size of 2 to 5 mm, 2 to 3 mm granules of Sumitomo Seika's Aquastop R (water-swellable plastic), and 1 to 2 mm granules of expanded vinyl chloride color chips were sprinkled on top of the mixture. After drying at 80°C for 3 minutes to adhesively fix the chips, the chips were heated at 140-150°C for 10 minutes and pressed at a pressure of 20 kg/cm ² .

The film-like decorative surface material produced in this way had a deep color tone 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 .

Wood chips with a size of 2 to 5 mm, 2 to 3 mm granules of Aquastop R (water-swellable plastic manufactured by Sumitomo Seika Chemical Co., Ltd.), and 1 to 2 mm granules of expanded vinyl chloride color chips were sprinkled on top of the mixture. After drying at 80℃ for 3 minutes to glue and fix the chips, drying at 140-150℃ for 10 minutes.
The mixture was heated for a minute and then pressurized at a pressure of 20 kg/cm ² .

The film-like decorative surface material produced in this way had a deep color tone that was extremely close to that of natural stone.

〔Effect of the invention〕

As explained above, when the present invention is used, it is possible to obtain a decorative surface material at a low cost with extremely little thermal energy compared to the conventional method using vinyl chloride plastisol, and it is possible to obtain an extremely deep surface material similar to that of natural stone. , it is possible to easily create tasteful uneven shading, and moreover, it is possible to create these subtle changes in various tones and patterns.

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.

[Brief explanation of the drawing]

1 to 3 are schematic partial sectional views schematically showing the manufacturing process of the decorative surface material of the present invention. 1...Film, 2...Colored adhesive layer, 3a,
3b... Chip made of water-absorbing substance, 4... Decorative surface material.

Claims (1)

[Claims] 1. A transparent film, a colored adhesive layer provided on one surface of the film, and on the colored adhesive layer,
a chip made of a water-absorbing material dispersed so as to be partially buried in the colored adhesive layer; the colored adhesive layer is partially absorbed by the chip; A decorative surface material characterized in that a non-buried portion of the colored adhesive layer is pressed onto the colored adhesive layer around the chip. 2. Apply a colored adhesive to a uniform thickness on a transparent film, and place a chip made of a water-absorbing substance on the colored adhesive layer so that the chip is partially buried in the colored adhesive layer. After scattering the colored adhesive to partially absorb the colored adhesive on the chip and drying the colored adhesive layer, spread the non-buried part of the colored adhesive layer on the colored adhesive layer around the chip. A method for producing a decorative surface material, characterized by: