JPS59220359A - Cork decorative board - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a cork decorative board mainly used as an interior flooring material.

[Background technology]

Cork decorative board, which is made by pasting cork material on the base material, has the warmth of cork's surface, soft feel, and heat insulation properties.

It has become widely used in recent years due to its sound absorption properties.

Cork decorative board is made by pasting cork slices onto a base material such as plywood. However, since there is a limit to the thickness of the slices, cracks between the cork grains and peeling of the cork may occur after the decorative board is made, which impairs the decorative properties. Decorative boards made of lauan plywood, calci sulfate, ram board, etc. as a base material and cork on the surface are processed with grooves to create a deep three-dimensional effect, exposing the skin of the base material and coloring the bottom and side walls of the grooves. Even after applying these methods, there was a sense of incongruity with the cork surface, and there was a lack of bulkiness and a sense of unity. In addition, the surface cork has various problems such as color change (sunburn) due to ultraviolet rays and large dimensional changes due to moisture absorption and desorption.

[Purpose of the invention]

This invention was made in view of the above circumstances, and provides a beautiful cork decorative board that has a soft surface, does not cause sunburn, has excellent dimensional stability, and is free from cracking and peeling. The purpose is to

[Disclosure of the invention]

The inventor made extensive studies to achieve the above object. As a result, this invention was completed.

The gist of the present invention is a cork decorative board characterized by having a cork material adhered to a base material. This will be explained in detail below.

FIG. 1 is a side sectional view of an embodiment of the cork decorative board according to the present invention. As shown in the figure, 1 this cork decorative board 1a has a cork material 3 on a base material 2, vinyl acetate,
It is attached using a resin adhesive such as urea 1 synthetic rubber or methymine. Therefore, the surface of the cork decorative board 1a has a soft feel. The base material 2 is, for example, lauan plywood, /neechkle board, insiculation board,
It is composed of asbestos boards, calcium silicate boards, etc.

The cork decorative board 1a is made by brush-coating at least the surface of the cork material 3 with glycol-like and/or glycol vinyl derivatives in order to prevent color change (sunburn) caused by ultraviolet rays of cork and dimensional change due to moisture absorption and desorption. tn still is applied by dip coating or the like. Examples of glycols used include ethylene glycol, glycerin, polyethylene glycol, and polypropylene glycol. Examples of vinyl derivatives of glycols include polyethylene glycol methacrylate.

Polyethylene glycol methyl methacrylate and the like are used.

FIG. 2 is a side sectional view of another embodiment of the cork decorative board according to the present invention. As shown by □ in the figure, this cork decorative board 1b has a sheet-like material 4 interposed between a base material 2 and a cork material 3, and is pasted with an adhesive or the like. As the sheet-like material 4, paper-like single-knit fabrics such as Japanese paper, non-woven fabrics, etc. are preferably used. By interposing the sheet-like material 4 between the base material 2 and the cork material 30 in this way, it is possible to prevent the cork material 3 from peeling off from the base material 2. In this case, the thickness of the cork material 3 can be made as thin as possible. Further, even if an inorganic base material having an alkaline content such as an asbestos board or a calcium silicate board is used as the base material, the cork can be prevented from being contaminated with alkali by the sheet-like material. Note that if the sheet-like material 4 is colored in the same color as the cork material 3, for example, even if the cork material peels off, the sheet-like material 4 can prevent the deterioration of aesthetic appearance due to exposure of the base material 2. can. Furthermore, if necessary, the cork decorative board shown in FIG. 2 may be provided with a groove 5 as shown in FIG. In other words, in the cork decorative board 1c shown in FIG. 3, the dimensional changes caused by moisture absorption and desorption of cork are absorbed to some extent by the expansion and contraction of the sheet material, but due to the presence of the grooves 5, the dimensional changes are almost completely absorbed. becomes absorbed into. Moreover, the cork decorative boards 1d shown in FIG. 4 can be easily connected to each other by using the male part 6 and the female part 7.

FIG. 5 is a side sectional view of another embodiment of the cork decorative board according to the present invention. As can be seen, this cork decorative board 1e is made by pasting a cork material 3 lined with a colored sheet-like material 4' on a base material 2 to form a groove 5, and in this groove 5, the colored sheet A synthetic resin adhesive colored in the same color as the shaped object 4' is applied, and cork grains 8 are placed at the bottom of the groove 5.
is sprayed and glued. The synthetic resin adhesive used here is vinyl acetate or ethylene-vinyl acetate copolymer.

Polyamide W resin and the like are preferably used. This type of cork decorative board 1e is made of a sheet material colored in the same color as the cork material and a sheet material colored in the same color as the cork material. The colored synthetic resin adhesive covers up the defects and no longer creates any discomfort. For this reason, the surface of the cork decorative board and the grooves form a beautiful piece with a sense of unity.

In the above-mentioned cork decorative boards 1b to 1e, glycols and/or vinyl derivatives of glycols may be coated on the surface of the cork material.

Examples will be described below.

[Example 1] A cork veneer with a sheet-like object was obtained by pasting and lining a cork slice veneer with 0.3-thick Japanese paper colored brown. Next, this was pasted onto a lauan plywood board with a thickness of 5.5 fl using a vinyl acetate/urea resin adhesive, and thermocompression bonded at 100° C. for 60 seconds. After that, a square groove with a width of 4 mm and a depth of 2.5 fins was bored, and after applying cork material and an ethylene-vinyl acetate heat-adhesive adhesive colored in the same color as the inside of the groove, the average diameter of the groove was 2.5 mm. Sprinkled with cod cork grains. The obtained cork decorative board had a solid surface and a sense of unity on the surface and inside of the grooves, and was beautiful.

[Example 2] A cork veneer with a sheet-like material was obtained by attaching a black-brown colored nonwoven fabric with a thickness of 0.4 trm to a cork slice veneer for lining. Next, this was pasted onto a calcium silicate plate having a thickness of 6.5 mη using a vinyl acetate adhesive and cold-pressed at 30° C. for 3 hours.

After that, a V-groove with an entrance width of 4 m and a depth of 2.5 m was bored, and after applying vinyl acetate emulsion adhesive colored in the same color as the cork material and the inside of the groove, cork particles with an average diameter of 2 fl were inserted into the groove. Spread. The obtained cork decorative board had a beautiful appearance with a solid surface and a sense of unity on the surface and inside of the grooves.

〔Effect of the invention〕

Since the cork decorative board according to the present invention has a cork material adhered to the base material, the surface has a soft texture. By applying glycols and/or vinyl derivatives of glycols, dimensional stability is improved and sunburn can be prevented over time. What's more, it retains the texture of cork compared to painted items.

By interposing a sheet-like material between the cork material and the base material, it is possible to prevent the cork material from peeling off from the base material. In this case, the thickness of the cork material can be made as thin as possible. Furthermore, even if an inorganic base material having an alkaline content such as an asbestos board or a calcium silicate board is used, the cork can be prevented from being contaminated with alkali by the sheet-like material.

In addition, by forming a groove with a colored sheet-like material, applying adhesive of the same color inside the groove, and spraying and adhering cork grains there, there is no discomfort at all even when the base material is exposed. , the surface of the cork decorative board and the grooves can be made into a beautiful piece with a sense of unity.

[Brief explanation of the drawing]

FIGS. 1 to 5 are side sectional views showing various embodiments of the cork decorative board according to the present invention. la, 1b, lc, 1d, 1e... cork decorative board 2.
...Base material 3...Cork board 4,4'...Sheet-like material 5...Groove portion 8...Cork grain agent Patent attorney
Takehiko Matsumoto Figure 3 Figure 5

Claims (1)

[Claims] (r) A cork decorative board, characterized in that a base IC cork material is adhered thereto. (2) Cork material has glycols and/or
The cork decorative board according to claim 1, which is coated with a vinyl derivative of glycol. (3) Claim 1 or '2 in which the cork material is attached to the base material with a sheet-like material interposed between them.
Cork decorative board as described in section. (4) The cork decorative board according to claim 3, wherein the sheet-like material is a nine-knit paper fabric or a nonwoven fabric. (5) The cork decorative board according to claim 3 or 4, wherein the sheet-like material is colored. (6) The cork decorative board according to any one of claims 1 to 5, wherein the cork decorative board has grooves formed on its surface. (7) Cork decorative board 0 according to claim @6, in which cork grains are scattered and adhered in the grooves.