JPH0310801A - 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 [Field of Industrial Application] The present invention relates to building materials for the interior and exterior of buildings, furniture, fittings, etc., and particularly to decorative laminates used for finishing them.

[Conventional technology and problems]

Decorative laminates are used for finishing interiors and exteriors of buildings, furniture, fittings, etc., and are required to have a high level of design. Therefore, usually a laminated flitch made by laminating and gluing a plurality of wood pieces is thinly sliced in the direction in which the laminated pattern appears on the surface, and a veneer is overlaid on a substrate such as plywood as a decorative board. It was common to try to improve the design by using laminated patterns.

Furthermore, recently, there has been a strong demand for not only two-dimensional designs but also three-dimensional aesthetics, and attempts have been made to apply uneven processing such as embossing to decorative boards made by overlaying veneers on substrates such as plywood. It has come to be accomplished.

However, if an embossing die is used to create an uneven pattern on plywood overlaid with a veneer as described above, the plywood overlaid with a veneer lacks flexibility, and if the embossed die is forcibly applied to the uneven pattern, the veneer becomes It had the disadvantage that it could be damaged, such as tearing, and the uneven pattern could not be created neatly.

[Problem that the invention seeks to solve]

The purpose of the present invention is to eliminate the drawbacks in the above-mentioned prior art,
To provide a decorative board on which a beautiful uneven pattern is applied without damaging the veneer, and a method for manufacturing the decorative board.

[Means of problem solving]

In the present invention, each veneer constituting a veneer laminated on a substrate is joined via a flexible synthetic resin or rubber, and a part or all of the flexible synthetic resin or rubber part The present invention is a decorative board characterized by having an embossed surface applied thereto, and the present invention also provides a decorative board in which each veneer is bonded to a substrate coated with an adhesive via a flexible synthetic resin or rubber. This is a method for manufacturing a decorative board, which is characterized by laminating layers of veneers, and then applying embossing to part or all of the flexible synthetic resin or rubber portion of the veneer. It is a more preferable embodiment for achieving the object of the present invention to emboss part or all of the synthetic resin or rubber portion at the same time as the veneer is bonded to the substrate under pressure.

The veneer is formed by thinly slicing a flitch made by laminating and gluing pieces of wood such as oak, teak, oak, and elm as appropriate so as to obtain a desired design in the cross section. In this case, in the present invention, a flitch is formed by interposing a flexible synthetic resin or rubber with a thickness of 0.1 to 2.0 mm between the pieces of wood, and the flitch is formed by interposing a flexible synthetic resin or rubber between the pieces of wood. Alternatively, the veneer is formed by thinly slicing the rubber in the direction in which it appears on the surface in a pattern. In this way,
It is possible to obtain a veneer in which each veneer is joined via a flexible synthetic resin or rubber.

The flexible synthetic resin or rubber is a synthetic resin or rubber that is flexible enough to be stretched well without causing cracks or the like during embossing applied to the part,
That is, synthetic resins with good elongation such as urethane elastomer, synthetic rubbers such as natural rubber, isoprene, chloroprene, styrene, butadiene rubber, etc. are used.

Further, the flexible synthetic resin or rubber may or may not contain fillers such as calcium carbonate, clay, talc, etc. When adding these fillers, for example, 100% by weight of the synthetic resin 1-2 parts of filler
It is appropriate to add it in a proportion of 0 parts by weight.

Furthermore, the flexible synthetic resin or rubber may be foamed before use. For example, it is also possible to use urethane mixed with Freon and foamed by Freon gas.

When forming the flitch, polyurethane resin, epoxy resin, etc. can be used as the adhesive used for laminating each piece of wood and flexible synthetic resin or rubber, but among them, one-component moisture-curing urethane Glue is best.

The flitch formed by interposing a flexible synthetic resin or rubber between each piece of wood as described above is sliced thinly in the direction in which the flexible synthetic resin or rubber appears on the surface in a pattern. The veneer obtained by
The embossed decorative laminate is produced by placing it on the surface of a substrate coated with adhesive and heating and pressing it using a hot press to obtain a decorative laminate base plate, and then heating and pressing it again using an embossing mold. Alternatively, pressing is performed using a hot press equipped with an embossing die, and the veneer and the substrate are bonded together and embossing is performed at the same time.

As the adhesive for bonding the veneer to the substrate, any adhesive commonly used in manufacturing decorative laminates may be used.

The emboss mold used has a convex part in a part or all of the pattern formed by the flexible synthetic resin or rubber part of the veneer, and the convex part of the emboss mold Press to match part or all of a certain synthetic resin or rubber part.

[For production]

According to the embossed decorative board and the method for manufacturing the decorative board of the present invention, veneers in which each veneer is joined via a flexible synthetic resin or rubber are laminated on a substrate,
Since embossing is applied to part or all of the flexible synthetic resin or rubber part of the veneer, when applying an uneven pattern with an embossing die, the veneer, which lacks flexibility, cannot stretch out and breaks. Since the flexible synthetic resin or rubber stretches and adapts well to the unevenness of the embossed mold, it is possible to prevent damage such as tearing of the veneer.

〔Example〕

Examples of the present invention will be described in detail below.

<Example 1> A urethane elastomer with a thickness of 1.0 mm is interposed between oak pieces, and a one-component moisture-curing urethane adhesive is applied at a coating amount of 20 g/length 2) in multiple layers. , cold press for 1 hour using a manual press at a press pressure of 5 kg/cil to bond and form a flitch.

A veneer is manufactured by slicing the laminated flitch in the direction in which the urethane elastomer appears on the surface in a pattern.

Apply urea vinyl acetate adhesive to the surface of 12mm thick plywood.
Apply 30g/if and place the veneer on the veneer, using a hot press equipped with an embossing mold having a convex portion in a part that corresponds to part or all of the urethane elastomer part of the veneer,
A hot press is placed so that the convex portion is placed on the urethane elastomer portion, and hot pressing is performed at 130° C. for 100 seconds.

<Example 2> In Example 1, 2.0 mm thick SBR was used instead of the urethane elastomer when manufacturing the laminated flitch.
(Styrene-butadiene rubber) to produce a veneer, and heat-press the veneer to the same plywood as in Example 1 at 130°C for 80 seconds using the same adhesive as in Example 1 to produce an embossed decorative board. do. At this time, it is the same as in Example 1 that the convex portion of the embossing plate is made to coincide with the SBR portion of the veneer.

〔effect〕

As described above, the decorative board of the present invention not only has a flitch laminated pattern expressed on the surface of the veneer and has an excellent appearance, but also has an embossed finish on part or all of the laminated pattern. The three-dimensional effect is increased, and the design effect is dramatically improved both visually and tactilely.

Furthermore, the method for manufacturing a decorative board of the present invention involves laminating veneers in which each veneer is bonded via a flexible synthetic resin or rubber on a substrate coated with an adhesive, and then reducing the flexibility of the veneer. Because the emboss is applied to some or all of the synthetic resin or rubber parts, the plywood overlaid with the veneer has poor flexibility, and when the embossed board is used to create irregularities, the veneer cannot stretch out and break. The flexible synthetic resin or rubber part stretches and adapts well to the unevenness of the embossed plate, thereby preventing damage such as tearing of the plate,
An excellent effect is that it solves the problem with the conventional method that if the embossing plate is forcibly made uneven, the veneer will break or otherwise be damaged and the uneven pattern cannot be made neatly, and it is possible to perform embossing that always has beautiful unevenness. It has the following.

[Brief explanation of drawings]

FIG. 1 is a perspective explanatory view of a flitch related to the decorative board of the present invention;
FIG. 2 is an explanatory cross-sectional view of the veneer, and FIG. 3 is an explanatory cross-sectional view of the decorative board. 1... Wood piece, 2... Flexible synthetic resin or rubber, 3... Substrate, 4... Embossed part.

Claims (1)

[Claims] 1. Each of the veneers constituting the veneer laminated on the substrate is joined through a flexible synthetic resin or rubber, and part or all of the synthetic resin or rubber part A decorative board characterized by being embossed. 2. Laminate veneers in which each veneer is joined via flexible synthetic resin or rubber on a substrate coated with adhesive, and then laminate a part or part of the synthetic resin or rubber part of the veneer. A method for manufacturing a decorative board characterized by applying embossing to the entire surface. 3. The method for manufacturing a decorative laminate according to claim 2, characterized in that embossing a part or all of the synthetic resin or rubber portion of the veneer is performed simultaneously when the veneer is bonded to the substrate under pressure. .