JPS62116141A - Sheet-shaped thrust 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] (Industrial Application Field) The present invention relates to a sheet-like veneer that has a natural wood look and is free from warping and distortion due to drying and wetness, yet is flexible and has good workability. .

(Prior art) Recently, decorative plywood, which is made by bonding natural wood veneers to synthetic wood boards, has come into use.Since the surface appearance is that of natural wood and its strength and sound insulation properties are excellent, it has become widely used. became.

(Problem to be solved by the invention) However, the conventional decorative veneer is not flexible;
It is thick to provide strength, and it is difficult to bend and load, making it easy to crack or tear, and there are problems such as warping or peeling of the veneer due to changes in dryness and humidity. It was expensive, partly because it was made of thick, high-quality wood.

(Means for solving the problem) Unexploded 1y1 was provided in order to eliminate the problem described in E, and is a heat t
A reinforcing sheet 2 such as cloth 1 and paper is heat-sealed to one side 1a of a film 1 made of IT plastic resin and having a thickness of 0,1 = 0.11 mm, and the other side lb is sanded.
．． This is a sheet-like veneer board to which veneer boards 3 having a thickness of 1 to 0.311I11 are adhered.

(Function) The sheet-like veneer constructed as described below has a resistance of 0.1 to 0.
Since the veneer with a thickness of 3 ml, the synthetic resin film 1 with a thickness of 0.1 to 0.8+ nm, and the reinforcing sheet 3 are laminated together, it is strong and will not crack or tear.

Furthermore, since it is in the form of a thin sheet, it is flexible and does not break even when bent, and has excellent workability, making it easy to process a part of the corner of the surface finish and wall surface of furniture "9".

In addition, a reinforcing sheet 2 made of cloth, paper, etc. is heat-fused to the synthetic resin film 1 containing fine aggregate to the side 1a of the synthetic resin film 1.
Since the sanding of the other layer 1b is removable because of the T layer, the aggregate in the synthetic resin film 1 is exposed to the sanded surface by sanding. and the plywood 3 to this side
It has good adhesion and does not peel off even when exposed to moisture.

In addition, it is flame retardant because it is bonded and fused in three layers.
The veneer board 3 whose surface is also a thin board of natural wood, the thin synthetic resin film l containing cellulose-based fine aggregate, and the reinforcing sheet 2 made of paper, cloth, etc. are integrated to provide strength. It is also hygroscopic, so it has a moderate amount of moisture absorption, making it resistant to contact sowing, and has a natural wood-like texture.It also has a reinforcing sheet 2 on the surface to be applied to walls, etc., making it easy to apply and prevents condensation. It never occurs.

(Example) Figure 1 shows a typical example of the present invention, where l is a hard or semi-hard material containing 5 to 30% of cellulose-based fine aggregate, such as wood flour, pulp flour, rice husk flour, etc. It is a hard synthetic resin film such as vinyl chloride, and its thickness is 0.1 to 0.8
It is set appropriately within the range of ffim. Reference numeral 2 is a reinforcing sheet made of cloth, paper (for example, paper for still pictures), etc., and there are cases where only one sheet of cloth is used, and there are cases where cloth and paper are used together. Cloth has great strength, but is difficult to attach to walls, etc., whereas paper is convenient because it is easy to attach and can be attached to a wall with glue.

3 is a natural wood veneer having a thickness of 0.1 to 0.3 mm, and is a sheet-like veneer in which a synthetic resin film 1, a reinforcing sheet 2, and a veneer 3 are integrally laminated.

As shown in FIG. 3, the synthetic resin film 1 is mainly molded using a calender roll 4, and the reinforcing sheet 2 wound around the roll 5 is polymerized on its negative side 1a while being pulled out. Heat and fuse.

Thereafter, the other surface 1b of the synthetic resin film 1 is sanded to make it a rough surface with unevenness as shown in FIG. The material is moistened with an appropriate amount of water and stretched sufficiently with pressure rolls in the longitudinal direction along the wood grain and in the transverse direction perpendicular to this to remove stress and give a thickness within the range of 0.1 to 0.3 ma+. 1b with an adhesive.

iA Figure 5 shows an example in which the 3 parts of the sheet-like veneer constructed as described above were cut 8 to create a pattern. It does not have much effect on strength.

(*i+IB) As described above, the sheet-like veneer according to the present invention is made of thermoplastic resin containing fine cellulose aggregate.
A reinforcing sheet such as a piece of cloth is pressure-fused to one side of the 0.8cm thick film, and the other side is used as a sanding surface.
．． It is made up of 1 to 0.3 mm thick veneer boards glued together, so it has a natural wood board shape, so when installing it on a wall, etc.
Since the synthetic resin film 1 is extremely thin, it is easy to bend, and there will be no bending, cracking, or tearing at corners of walls, etc., or corners of house frames, etc.

In addition, since the veneer 3, synthetic resin film 1, and reinforcing sheet 2 are laminated from the surface, it is water resistant and flame retardant, and the veneer 3 is stretched vertically and horizontally while absorbing moisture to remove stress. If you do this, there will be no warping or distortion during drying or wetting, and there is a gap between the veneer 3 and the synthetic resin film 1.
There is no peeling because the bond is bonded by the exposed sanded surface of the fine aggregate.

In addition, the natural wood veneer 3 and the synthetic resin film 1 containing fine cellulose aggregate have an appropriate level of moisture absorption, creating a sense of resistance on the surface that feels like natural wood, and causing condensation on the cladding surface. Not at all. It is suitable as a surface decorative sheet for walls, floors, furniture, barns, and other fittings. Moreover, since thin veneer is used, the cost of expensive logs is reduced, making it inexpensive.

[Brief explanation of drawings]

Fig. 1 is a sectional view of an embodiment of the sheet-like veneer according to the present invention, Fig. 2 is an exploded perspective view thereof, Fig. 3 is an explanatory diagram of the joining process of the film and reinforcing sheet, and Fig. 4 is the veneer. FIG. 5 is an explanatory view showing an enlarged cross-section of the bonding method, and FIG. 5 is a cross-sectional view of another embodiment. l...Film, 2...Reinforcement sheet, 3...Piece board, 7...Fine aggregate.

Claims (1)

[Claims] A reinforcing sheet such as cloth or paper is pressure-fused to one side of a 0.1 to 0.8 mm thick film made of thermoplastic resin containing fine cellulose aggregate, and the other side is used as a sanding surface. A sheet-like veneer characterized in that veneers having a thickness of 0.1 to 0.3 mm are bonded together.