JPH04201446A - Preparation of decorative interior material - Google Patents

Abstract

PURPOSE:To obtain a decorative interior material which is lightweight, keeps excellent strength and is advantageous for handling by spreading an aggregate consisting of a fine particle of an inorg. material on the upper surface of a coated adhesive and after the surface of the integrated product is coated again with a liq. adhesive, spreading the aggregate, making the surface smooth and coating the surface with a transparent top coat. CONSTITUTION:After a main agent of an epoxy resin adhesive in mixed with a curing agent and the upper surface of a base material 1 is coated therewith while it is uncured to form an adhesive layer 5, an aggregate 6 is spread on this adhesive layer 5 and leveling is performed by means of a roller so as to make the surface to the same thickness to wait for curing of the adhesive and an integrated product wherein the base material 1 and the aggregate 6 and the aggregates 6 each other are integrated together. Then, after the surface of this integrated product is coated with the same liq. adhesive to form an adhesive layer 7, the same aggregate 6 is spread from the top of this adhesive layer 7 and leveling is performed by means of a roller so as to make the surface approximately the same thickness to obtain an integrated product wherein the aggregate is uniformly integrated by curing of the adhesive. A decorative interior material is obtd. by coating the surface of this integrated product with a clear lacquer 8.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for manufacturing a decorative interior material that is mainly useful as an indoor wall material in a building.

[Prior Art] A method for manufacturing a hard board material in which fine particles of inorganic materials such as metal, glass, ceramic, etc. are hardened with an adhesive made of synthetic resin is disclosed in Japanese Patent Laid-Open No. 2-92966 filed by the present applicant. Are known.

The board material obtained by this method has fine particles of inorganic material exposed on the surface and becomes a beautiful board material, so it is useful for indoor flooring and wall materials. By appropriately selecting the color, etc., it can be used to great advantage for decorative wall materials, etc.

[Problem to be solved by the invention]

However, the board material obtained by the above manufacturing method uses fine particles of relatively heavy inorganic material such as metal, glass, and ceramic, and entangles them with adhesive to at least the extent that the adhesive is not exposed on the surface. Since the fine grains are bound to each other, these fine grains increase the weight of the board material, making it difficult to handle; It has been found that this involves the contradictory problems of weakening the bond and reducing the strength of the board material.

In view of the above-mentioned problems with conventional board materials, the present invention aims to provide a decorative interior material that is lightweight, maintains excellent strength, and is easy to handle.

[Means for Solving the Problems] In order to achieve the above object, the method for manufacturing decorative interior materials of the present invention involves applying a liquid adhesive to the surface of a base material made of a sheet or board, and dissolving the applied adhesive. One or more types of aggregate made of fine particles of inorganic materials such as metal, glass, ceramic, etc. are sprinkled on the top surface, and the liquid adhesive hardens to bind the aggregate to the base material. A first step of trying to bond each other, a second step of applying liquid adhesive again to the surface of the bonded material obtained in this first step, and then spreading the aggregate to level the surface; This method is characterized by comprising a third step of applying a transparent top coat to the surface of the bound product obtained in the second step.

The aggregates used in the second invention are fine particles made of inorganic materials such as metals, glass, and ceramics, among which metal aggregates include iron, stainless steel, copper, brass,
Aluminum, etc. can be used as a ceramic aggregate, but ceramic materials called new ceramics, which are made from mineral materials or crystalline materials without containing clay materials such as ceramics, are also used. can be used.

Aggregates made of these metals, glass, and ceramics can be used alone or in combination of two or more.

The above-mentioned aggregate preferably has an average particle size in the range of 0.5 mm to 2 mm, and if the average particle size is less than 0.5 mm, adhesives are often used to bond the aggregates together, and
The appearance of the aggregate exposed on the surface is not good, and if the average particle size exceeds 2 mm, the bound particles tend to separate from each other with long-term use, so the average particle size is 0.5 mm.
A range of mm to 2 mm, especially 0.7 mm to 1.5 mm is optimal.

As the base material used in this invention, semi-rigid synthetic resin sheets with appropriate flexibility, rigid synthetic resin boards, fiber cloth, or wooden boards such as plywood can be used. , a double-sided adhesive sheet with adhesive applied on both sides of the sheet, or a single-sided adhesive sheet with adhesive applied on one side of the sheet may be used, and the adhesive side of these sheets is covered in advance with release paper, and this release paper is It can be peeled off and used.

Note that the use of a double-sided adhesive sheet is advantageous since the interior material of the present invention can be easily adhered to other objects using the adhesive on the back side.

On the other hand, the liquid adhesive for bonding the aggregate particles to each other and the aggregate and the base material has excellent adhesion to the aggregate and the base material to be used. Active one-component or two-component thermosetting synthetic resin adhesives are preferred, and among these, heat-curing or room temperature-curing epoxy resin adhesives that have a low shrinkage rate upon curing are preferred.

Further, as other adhesives, thermoplastic adhesives such as acrylic resin adhesives or ethylene vinyl acetate adhesives can also be used.

The amount of each liquid adhesive in the first step to bind the aggregate to the base material and the second step to apply to the surface of the bound material obtained in the first step to bind the aggregate is In both cases, the appropriate range is approximately 0.1 kg to 5 kg/m2, especially 0.2 kg to 3 kg/m2 per 1 m2 of the applied surface. Within this range, the liquid adhesive can be evenly entwined with the aggregate, and it is suitable. It is possible to make a strong bond.

Excessive use of the above-mentioned adhesives strengthens the bonding between the aggregates and the aggregates to the base material, but on the other hand, the bonded aggregates become sparse and do not look good. Use of a large amount of adhesive is also unfavorable from an economical point of view.

Materials for the top coat in the third step include:
Acrylic-urethane clear lacquers, vinyl resin transparent paints, etc. are suitable, and such transparent paints may be colored transparent paints, which are essentially made of inorganic materials bound in the second step. It is sufficient that the aggregate is exposed on the surface through this transparent paint.

Note that the first and second steps on the base material do not necessarily have to be carried out on the entire surface of the base material; aggregate is bound to a part of the base material, and the bound aggregate A desired design or pattern may be formed.

When forming a pattern etc. with such aggregate, masking is performed using release paper etc. around the pattern etc. to be formed, and after the aggregate is bound, the masking is peeled off, and thereafter in the third step, the above-mentioned By applying a top coat to the binding part or the entire surface of the base material including the binding part, it is possible to obtain a decorative interior material in which a desired pattern or the like is formed using aggregate on the base material.

[Function] In the method for producing decorative interior materials of the present invention, a liquid adhesive is applied to a sheet or board serving as a base material, and aggregate made of fine particles of inorganic material is sprinkled on top of the liquid adhesive to bind it. The binding process is carried out twice: the first process and the second process, in which the liquid adhesive is applied again to the surface and fine aggregate made of inorganic material is further spread and bonded. Therefore, in the first step, the inorganic material aggregate is mainly bound to the base material, and in the second step, the layer of the inorganic material aggregate bound to the base material is adjusted to a predetermined thickness, and the aggregate is bonded to the base material. The material can be made to be strong and evenly cover the surface.

Although this second step almost prevents the aggregate from falling off the surface, the surface coating with the top coat performed in the third step further prevents the aggregate from falling off the surface and smoothes the surface. It can play the role of improving properties and preventing discoloration due to oxidation of fine particles.

〔Example〕

Hereinafter, the method for manufacturing the decorative interior material of the present invention will be specifically explained with reference to Examples.

1 boat ±1 Figures 1 to 5 show an example of the manufacturing method for the decorative interior material 1 in Example 1 in the order of steps. An adhesive layer 3 is formed by applying an adhesive to the back surface of a sheet 2 made of a certain vinyl chloride resin, and the surface of this adhesive layer 3 is covered with a release paper 4.

As shown in Fig. 2, a curing agent is mixed with the main ingredient of a two-component epoxy resin adhesive consisting of a main ingredient and a curing agent, and the adhesive is applied to the top surface of the base material 1 while it is not yet cured. After forming the layer 5, an aggregate 6 made of fine brass particles having an average diameter of 1 mm and having an x-spherical shape is sprinkled on top of the adhesive layer 5, and the surface is made to have an equal thickness using a roller (not shown). The mixture was leveled and waited for the adhesive to harden, thereby obtaining a bonded product in which the base material 1 and the aggregates 6 and the aggregates 6 were bonded to each other.

Next, as shown in FIG. 3, the same liquid adhesive as described above is applied to the surface of this bonded material to form an adhesive N7, and then a homogeneous material made of fine brass particles is applied from above this adhesive layer 7. The aggregate 6 was spread, and the surface was leveled with a roller to an equal thickness, and the adhesive was cured to obtain a bonded product in which the aggregate was evenly bonded. (See Figure 4) In the third step, a clear lacquer 8 made of acrylic-urethane paint is applied to the surface of this bonded material to obtain a decorative interior material with a total thickness of about 1.2 mm including the base material. Ta.

(See FIG. 5) The thus obtained decorative interior material had a golden-colored binding layer 9 of the aggregate 6 made of fine brass particles.

The brass aggregate used in each of these processes weighs 4.5k.
g/m2.

Actual length 12 - Apply a two-component epoxy resin adhesive consisting of the same main agent and curing agent as above to the surface of a 2 mm thick plywood board, and while the adhesive is uncured, the average particle size diameter is 1
．． Aggregate consisting of fine particles of colorless and transparent glass spheres of Omm was spread and smoothed with a roller to adhere to the surface of the board material.

After the adhesive had hardened, the same liquid adhesive was applied to the surface again, and aggregate made of the same glass bulbs was spread, leveled, and bonded. A clear lacquer made of acrylic-urethane paint was applied to the surface of the thus obtained bond, and a beautiful decorative interior material was obtained in which the light diffusely reflected by the glass bulbs was scattered through the transparent rear lacquer.

The total thickness of this decorative interior material including the base material is approximately 2.5
It was mm.

〔Effect of the invention〕

The method for producing decorative interior materials of the present invention mainly involves bonding the aggregate to the base material in the first step, and further strengthens the aggregate bonded to the base material in the second step to form the base material. By obtaining a bound product of a predetermined thickness in which the materials are firmly integrated, and further covering the surface with a transparent top coat, it is possible to obtain an excellent decorative interior material in which the aggregate does not separate.

According to the method of this invention, since the binding layer is integrated with the base material, the overall thickness can be reduced and the weight can be reduced.
Further, even if the thickness is reduced, the strength can be sufficiently maintained.

By selecting the type and color of the inorganic material used, the manufacturing method of this invention can utilize the material without special coloring operations on the aggregate, and can be effectively used by pasting it on indoor walls and ceilings. It is something that can be done.

[Brief explanation of the drawing]

FIG. 1 is a vertical cross-sectional view showing an example of a base material used for the decorative interior material of the present invention, FIG. FIG. 4 is a vertical cross-sectional view of the bond obtained by carrying out the second step of the present invention. FIG. 2 is a longitudinal cross-sectional view of a decorative interior material obtained according to the invention. 1... Base material 2... Sheet 3... Adhesive layer 4... Release paper 5... Adhesive layer 6... Aggregate 7... Adhesive layer 8... Clear lacquer 9...Tie layer patent applicant Tomo Arisawa, Masato Jidai
Patent Attorney Yuki 1) Hiroshi Zen Figure 1 Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] 1) Apply a liquid adhesive to the surface of a base material made of a sheet or board, and apply one or more types of aggregate made of fine particles of inorganic material such as metal, glass, or ceramic on the top surface of the applied adhesive. A first method of spraying and curing the liquid adhesive to bind the aggregate to the base material and to bind the aggregates to each other.
A second step is to apply the liquid adhesive again to the surface of the bond obtained in the first step, and then spread the aggregate to level the surface.
and a third step of applying a transparent top coat to the surface of the bound product obtained in the second step.