JPH03146340A - Decorative laminated sheet - Google Patents

Abstract

PURPOSE:To manufacture comparatively thick veneer, and to stick the veneer even on an irregular concrete surface without trouble by bonding conifer wood small in width to the rear of the veneer. CONSTITUTION:Conifer wood 2 in small width is arranged and bonded to the rear of a comparatively thick decorative unit 1 in thickness of 2-6mm at slight intervals 3 in the direction orthogonal to the fibrous direction of the decorative unit 1. Any of a pine, a Japanese cedar, a Japanese hemlock, etc., may be used as the wood kinds of the conifer wood 2. A sheet 4 having cushioning properties in thickness of 1-4mm is stuck on the rear of the conifer wood 2. The sheets of a natural rubber, a synthetic rubber and a vinyl chloride resin and sheets obtained by expanding these substances or sheets in which inorganic powder, fibers, etc., are mixed into these sheets can be employed as the sheet 4 having cushioning properties. Male, tongues 6 and female tongues 7 are formed on the four side faces of a decorative board 5, and other engaging means such as dovetailing may be available in place of the male tongues and the female tongues.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a decorative board suitable for being applied directly to a concrete floor surface or the like.

[Prior art] As a decorative board suitable for attaching directly to concrete floors, etc., a layer of veneer with a thickness of 0.3 to 1 m is attached to the surface of lauan plywood, and the back side of the plywood has cushioning properties. Decorative boards with sheets pasted on them were known.

However, recently, the depletion of wood resources in tropical rainforests has become a problem from the perspective of nature conservation, and it has become difficult to obtain lauan wood, the main raw material for plywood. Therefore, there is a movement to use coniferous trees, which are easy to plant, as a substitute for lauan wood. However, even if we simply tried to make plywood from coniferous wood, the diameter of the raw wood was smaller than that of lauan wood, and coniferous wood with many knots was not suitable for producing plywood with a smooth surface like lauan wood. . Therefore, when a natural wood veneer with a thickness of 0.3 to 1 layer is applied to the surface of a softwood plywood, it is very difficult to obtain a decorative plywood with a smooth surface and the appearance is poor. In addition, the use of coniferous reed wood has the disadvantage that it is more likely to warp than coniferous plywood.

C Problems to be Solved by the Invention] The present inventor aims to provide a decorative board that has a quality equal to or higher than that of conventional decorative boards even when the above-mentioned coniferous wood is used.

[Means for Solving the Problem] This invention is based on the invention, in which small widths of softwood are adhered to the back side of a veneer with a thickness of 2 to 6 mm in a direction perpendicular to the fiber direction of the veneer, with a slight gap left between them, and cushioning properties are applied to the back side of the veneer. Decorative laminates are made by pasting a certain sheet, and on the back of a veneer with a thickness of 2 to 6 mm, small pieces of coniferous wood are lined up with a slight gap in the direction perpendicular to the fiber direction of the veneer and adhered to create a slender decorative laminate. is formed, and a plurality of these elongated decorative boards are arranged in the width direction while being shifted in the length direction little by little so as to form a step shape, and connected so that the joints are flexible, and the back side This relates to a decorative board in which a sheet with cushioning properties is adhered to.

This invention will be explained in detail below based on Examples.

FIG. 1 is a sectional view showing an embodiment of the present invention, and the thickness is 2 to 6 mm.
On the back side of a comparatively thick decorative veneer l, small width softwood materials 2 are lined up and adhered with a slight gap 3 in the direction perpendicular to the fiber direction. The thickness of decorative veneer 1 is 2 to 6.
The reason why it is set at 1 is that if the thickness is less than 2+u+, warping is likely to occur when it is made into a decorative board, and if it exceeds 6+s+w, it becomes too expensive economically and also has the disadvantage that warping is likely to occur. The narrow softwood material 2 has a thickness of 4 to 8+I1
The width is preferably 20 to 50 m, but is not limited to this. Examples of the softwood material 2 include pine, cedar,
Any kind of toga etc. is fine. Gap 3 between softwood materials 2 is 3
Generally, the length is less than m, and the two may be in contact with each other, and a cooling sheet 4 having a thickness of 1 to 4 mm is adhered to the back surface. As the cushioning sheet, sheets of natural rubber, synthetic rubber, vinyl chloride resin, foamed products of these, or products mixed with inorganic powder, laminated resin, etc. can be used.

On the surface of the decorative veneer 1, a transparent paint layer containing α-alumina or silicon carbide may be formed to form a colored layer or to improve wear resistance. i1 ship 1 delusion 9r, nei to μζ lower ≧l~zut)
(Male 6 and female 7 are formed on the four sides of the decorative board 5 manufactured in this way. Instead of male and female seeds, Other engagement means, such as joint recessing, may also be formed.

Figure 2 is a front view of a wide decorative board manufactured by connecting the m-long decorative boards shown in Figure 1, and Figure 3 is a sectional view taken along line AA in Figure 2.
A wide decorative board is constructed by arranging a plurality of elongated decorative boards 5 in the width direction so that they are slightly shifted in the length direction so as to form a step-like shape. At this time, the male fruit 6 and female fruit 7 formed on the side surface of the #i long decorative board 5 are loosely fitted together, and the fitting portion is filled with a flexible hot melt resin 8, and the decorative board They are designed to bend freely when they are joined together. At this time, it is preferable for strength to arrange the small gaps M3 of the softwood materials in a staggered manner.As flexible hot melt resins, ethylene vinyl acetate resin, urethane resin, polyester resin etc.

A cushioning sheet having the same shape as the material is adhered to the back side of the wide decorative material thus formed. Of course, this cushioning sheet may be divided into two or three parts.

[Effects of the invention] As mentioned above, in this invention, since a small piece of coniferous wood is glued to the back side of the veneer, there is no problem of natural destruction of the tropical rainforest, and the thickness of the front veneer is 2 to 6 mm. The veneer must have a relatively thick layer, the fiber directions of both the veneer and the softwood wood must be perpendicular, and the narrow softwood wood must be glued side by side with a slight gap. This has the advantage that the decorative board does not warp, and since a cushioning sheet is attached to the back side, it can be applied to uneven concrete surfaces without any problems.

[Example 1] On the back side of a 4 mra thick oak veneer, a small piece of pine wood with a thickness of 6 m and a width of 30 mm was placed approximately 1 mm in the direction orthogonal to the fiber direction.
Glue them side by side with a gap between
Attach a layer of polyurethane closed foam sheet to size 1
A desired decorative board measuring 50 mm x 1800 mm was obtained.

[Example 2] On the back side of an oak veneer with a thickness of 3+us, 0.5 of a small piece of oak wood with a thickness of 7+sm and a width of 25mm was placed in the direction orthogonal to the m-fiber direction.
Glue them side by side with a gap of 3 m in thickness on the back side.
A polyethylene-based closed foam sheet of size 60 mm x 900 mm is pasted, and male and female seeds are formed on the four sides of the sheet.
A desired elongated decorative board was obtained.

[Example 3] 50 m1 of the elongated decorative board of Example 2 was arranged in a step-like manner.
Five sheets are lined up and connected in the width direction while being shifted in the length direction, and hot melt resin is partially injected from the back side of the connected part to join them so that the joint part can be bent freely. A desired decorative board was obtained by pasting Otori's closed polyurethane foam sheet.

[Brief explanation of the drawing]

:jS1 is a side view showing an embodiment of the present invention. FIG. 2 is a plan view of a wide decorative board manufactured by joining the decorative boards shown in FIG. 1, and FIG. 3 is a partially enlarged sectional view taken along the line A-A in FIG. 2. 1... Decorative veneer 2... Narrow coniferous wood 3... Gap 4... Cushioning sheet 5... Decorative board 6... Male fruit 7... Female fruit 8... ·Hotmelt

Claims (2)

[Claims] (1) On the back of a veneer with a thickness of 2 to 6 mm, small pieces of softwood are glued in a direction perpendicular to the fiber direction with a slight gap between them, and a cushioning sheet is pasted on the back of the veneer. Decorative board. (2) On the back side of a veneer with a thickness of 2 to 6 mm, narrow pieces of coniferous wood are lined up with a slight gap in the direction perpendicular to the fiber direction and adhered to form an elongated decorative board. , a plurality of sheets are arranged in the width direction while being slightly shifted in the length direction so as to form a staircase shape, and the joints are connected so that they can be bent freely, and a cushioning sheet is attached to the back side. Decorative board.