JPS6237686Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Field of Application> The present invention relates to a decorative laminated laminated material that exhibits very little cracking, warping, etc. that appear on the surface decorative veneer, which is a decorative material.

<Conventional technology> In recent years, due to the lack of high-quality wood resources and to reduce the occurrence of cracking or warping, multiple pieces of sawn boards and small square timbers have been glued together so that their fiber directions are almost parallel to each other. Laminated wood has come to be used, and decorative veneer of cedar, cypress, etc. is adhered to the surface of this laminated wood to create decorative laminated wood for pillars and the like.

This decorative laminated lumber is manufactured by performing the above-mentioned work using industrial methods and using thoroughly dried sawn boards and small square lumber under strict quality control. Compared to wood, decorative veneer has a characteristic that there are very few cracks or warps that appear on the surface.

However, cracks and warping occur in conventional decorative laminated lumber, so as a means to suppress these quality defects, conventionally, wood veneers or The method used was to use plywood, strong paper, cloth, etc.

<Problems that the invention aims to solve> Conventional decorative laminated laminated wood, which was made to suppress the occurrence of cracks and warping, is expensive to manufacture due to the use of inclusions; In some cases, it has not been possible to achieve a sufficient effect on cracking, warping, etc., and some kind of improvement has been desired.

<Means for solving the problem> The decorative laminated lumber according to the present invention is a laminated lumber made by laminating and gluing a plurality of sawn boards or small square lumber, and bonding to at least the exposed surface of the adhesive layer of the laminated lumber excluding the end part of the laminated lumber. iron foil or steel foil with a thickness of 0.01 mm to 0.08 mm and aluminum with a thickness of 0.03 mm to 0.08 mm. It has a metal foil of any kind among foils and a decorative material adhered to at least the surface of the metal foil.

<Function> While the metal foil suppresses cracking and warping of the laminated wood, the large number of holes formed in the metal foil ensure the humidity control effect of the laminated wood itself.

<Example> As shown in FIG. 1, which shows the structure of an embodiment of the decorative laminated timber according to the present invention, the laminated timber 1 is made of artificially dried sawnboard 2a of Scots spruce, Sakhalin fir, Japanese hemlock, etc. having the same fiber direction. - 2e are assembled and bonded using a thermosetting resin adhesive such as urea resin, urea melamine resin, phenol resin, and resorcinol resin so that the fiber directions are substantially parallel to each other to form a columnar shape. The adhesive layer exposed surface 3 formed on the outer circumferential surface of the laminated timber 1, which is particularly prone to cracking and warping, is coated with iron foil, steel foil, or aluminum foil (hereinafter collectively referred to as metal foil) as shown in FIG. (referred to as foil) 4 is adhered, and this metal foil 4
A large number of circular holes 5 for ventilation are provided in order to prevent uneven drying due to the diffusion of water vapor generated during adhesion and moisture absorption and desorption after manufacturing. The lower limit of the occupancy of the holes 5 with respect to the metal foil 4 is set at approximately 20% in consideration of water vapor diffusion, and the upper limit is set at approximately 50% in order to avoid extremely reducing the strength of the metal foil 4.
It is preferable that Although the shape and location of the holes 5 are not particularly limited, it is best to have perfectly circular or inert circular holes dotted at equal intervals in order to avoid stress concentration. Among iron foil, steel foil, and aluminum foil, iron foil is most preferable as the metal foil 4 in terms of workability, adhesion, crack resistance, and economical efficiency. Considering this, about 0.01 to 0.08 mm is preferable. Note that this thickness dimension may be the same for steel foil, but when using aluminum foil, it is slightly inferior in tensile strength and hardness compared to iron foil or steel foil, so a thickness of 0.03 mm or more is recommended. use something And this metal foil 4
A surface-decorated veneer 6 is adhered as a decorative material to the surface and other outer circumferential surfaces to which the metal foil 4 is not pasted to form a decorative laminated timber.

Note that the laminated timber 1 used in this example has two exposed adhesive layer surfaces 3 facing the outer peripheral surface, but the combination of the sawn boards 2a to 2e may be different or small square timbers (not shown) may be used. When the number of adhesive layer exposed surfaces 3 becomes one or three or more, it is natural that the metal foil 4 must be adhered to these adhesive layer exposed surfaces 3 accordingly. Furthermore, in order to further increase the strength, if the metal foil 4 is bonded to the outer circumferential surface of the laminated timber 1 other than the adhesive layer exposed surface 3, the effect will be different in terms of the incidence of cracking and warping compared to the conventional laminated timber 1. noticeable. Furthermore, the end of the laminated wood 1 is usually processed by cutting as a joint, but in some cases it may be exposed indoors, so in such cases, the end of the end of the wood is also prevented from cracking or warping. In order to maintain the aesthetic appearance, it is desirable to bond the metal foil 4 and the surface decorative veneer 6 together. On the other hand, when adhering the surface decorative veneer 6, as long as the grain of the surface of the laminated wood 1 on which the adhesive layer is not exposed is even, it is not necessarily necessary to cover the entire surface by taking advantage of this. In addition to surface decorative veneers, printed paper, vinyl chloride decorative films, etc. may be bonded as decorative materials.

In this way, when iron foil, steel foil, or aluminum foil is glued around the laminated wood to suppress cracks and warping of the laminated wood, shrinkage and other factors that cause cracks, etc. that appear on the decorative veneer of this laminated wood can be avoided. Compared to wood veneer, plywood, cloth, paper, etc., metal foil has a tensile strength several tens of times higher than wood veneer, plywood, cloth, paper, etc., compared to expansion, so even if iron, steel, or aluminum Even if metal foil is used in the form of a thin film, it is not prone to cracking or warping and maintains its aesthetic appearance for a long period of time. It is possible to obtain a decorative laminated wood with good adhesiveness and aesthetic appearance.

<Effects of the invention> According to the decorative laminated timber of the invention, the tensile strength of the metal foil is extremely high, so the effects such as crack prevention are excellent, and the surface smoothness is also good.
Not only does it not require sealing or polishing as pre-treatment for adhering surface decorative veneers, but it also allows the use of very thin decorative wood veneers.
It has many advantages such as great resource saving effect.

[Brief description of the drawings]

Figure 1 is a cross-sectional view showing the structure of one embodiment of the decorative laminated laminated wood of the present invention, which is made by adhering metal foil and surface decorative veneer to laminated lumber, and Figure 2 is an external view of the metal foil. be. Also, in the symbols in the figure, 1 is laminated wood, 2a, 2b, 2
c, 2d, 2e are ground boards, 3 is the adhesive layer exposed surface, 4
5 is a metal foil, 5 is a hole, and 6 is a surface decorative veneer.

Claims (1)

[Scope of utility model registration request] Glulam is made by laminating and gluing multiple sawn boards or small square timbers, and the adhesive layer is glued to at least the exposed surface of the glulam, excluding the end of the wood, to prevent cracking and warping of the laminated wood, and to have 20% ventilation holes. Iron foil and steel foil formed from 50% and having a thickness of 0.01 mm to 0.08 mm and a thickness of
A decorative laminated material comprising any kind of aluminum foil of 0.03 mm to 0.08 mm and a decorative material adhered to at least the surface of the metal foil.