JPH0744469U - Resin lightweight laminate - Google Patents

Abstract

(57) [Summary] [Structure] A polystyrene foam extruded from a low-expanded styrene resin plate 1, 2 between two layers of polystyrene foam 3, 4,
The layers 5 and 6 are laminated and integrated by interposing four or more layers so that the directions formed by the extrusion and stretching cross each other in the vertical and horizontal directions. [Effect] Appearance It is a wood grain laminated board, which can prevent and correct warpage, reduce weight and retain cushioning property, soundproof, moistureproof and heat insulating effect, and save natural wood resources. Easy to cut according to the size of the application. It is easy to recycle because of lamination of styrene resin.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a lightweight resin laminate used for construction materials and the like.

[0002]

[Problems to be solved by conventional techniques and devices]

 Conventionally, veneer plywood and other plywood have been widely used as building materials such as flooring and ceiling materials, but a sponge layer or Styrofoam layer is formed between decorative veneer boards to maintain elasticity as plywood. A device was proposed (Japanese Utility Model Laid-Open No. 58-191216), but even if it was lightweight and could maintain elasticity, it could not prevent warpage peculiar to plywood, and was not stable in strength. Further, the polystyrene foam alone has a problem in strength because it is fragile even if it is relatively thick.

In view of the above, the present invention aims to obtain a resin lightweight laminated plate which is effective for preventing the occurrence of warpage as well as the reduction in weight and retention of elasticity.

[0004]

[Means for Solving the Problems]

 As a constitution of the resin lightweight laminated board according to the present invention which can achieve the above-mentioned object, the directionality formed by the extrusion stretching of the polystyrene foam between the two layers of the styrene resin extruded low foamed board is measured. It is characterized in that at least four layers are alternately interposed and laminated and integrated.

[0005]

[Action]

 The lightweight resin laminate of the present invention is provided with a polystyrene foam extruded from a styrene-based resin and sandwiched between two layers so that the direction of the extrusion can be alternated vertically and horizontally. Therefore, the directions can be mutually complemented to each other, the occurrence of warpage can be prevented, and the warpage can be corrected. In addition, the polystyrene foam can also reduce the weight and exert the effects of cushioning, soundproofing, moistureproofing and heat insulation. In addition, a styrene resin extruded low-foam plate can be used to form a wood grain appearance.

[0006]

【Example】

 Next, embodiments of the present invention will be illustrated below with reference to the drawings. Reference numerals 1 and 2 are extruded low foam plates of styrene resin, and are foam plates in which a large number of extruded foam strand-shaped strips are fused to each other. Reference numerals 3, 4, 5, and 6 denote four-layer polystyrene foams interposed between the two ply boards 1 and 2 and the two ply boards. Polystyrene foams 3, 4, 5 and 6 are formed by alternately extruding and stretching them so that the directionality is changed longitudinally and laterally, for example, as shown in FIG. It is a thing. The extruded low-foam plate may have a wood grain pattern printed on its surface.

When the application is, for example, a concrete construction panel, the size is about 1000 × 2000 mm, and when it is small for other applications, it is cut and used. In the figure, four layers of polystyrene foam are interposed between the plywood layers, but four or more layers may be used. In that case, the directionality of the extrusion drawing must be alternated vertically and horizontally. Is.

In some cases, the directions of the strips of the extruded low-foam plates 1 and 2 on the front and back sides may be crossed with each other so that the directions can be more offset. In addition, as the polystyrene foam, those which do not exhibit a good secondary foamability after a long period of time after production can be preferably used. Specific examples of the present invention will be given below.

Four polystyrene foams having a specific gravity of 0.08 and a specific gravity of 0.08 (trademark: Eslen sheet-manufactured by Sekisui Plastics Co., Ltd.) were used by crossing their directions and adhering. Extruded low-foam boards made of styrene resin are laminated and integrated above and below the foam layer. This low foam plate is formed by extruding a large number of strips in a strand shape and fusing them to each other to form a plate shape. As this extruded low-foaming plate, one having a trademark of Sekisui Shinki (manufactured by Sekisui Plastics Co., Ltd.) of 4.0 mm thickness and a specific gravity of 0.41 is suitable. A trademark: Esdyne 235L (manufactured by Sekisui Chemical Co., Ltd.) was used for adhesion.

The laminate had a weight of 3700 g / m ² (thickness 13.6 mm). Whereas the above-mentioned veneer plywood of the related art has a thickness of about 2.7 mm × m ² and a weight of about 1900 g and a density of about 704 kg / m ³ , the total density of the laminated plate according to the present invention is shown below. Styrenic resin extruded low foam board (4.0 mm thickness, density 408 kg / m ³ ) × 2 → 8.0 mm thickness Polystyrene foam (1.4 mm thickness, density 80 kg / m ³ ) × 4 → 5.6 mm thickness TOTAL density = 272 kg / m ³

[0011]

[Effect of device]

 According to the configuration of the present invention as described above, it is suitable as a building material such as a floor material, a wall material, a ceiling material, etc., particularly as an interior panel or a concrete construction panel of a concrete building, and the directionality that can be extruded and stretched is alternated vertically and horizontally. Since the polystyrene foam is interposed between the two layers of the extruded low foam plate of styrene resin having a wood grain appearance, the following effects are obtained. Compared with veneer plywood, even if it has the same strength, it can be sufficiently lightweight and can retain cushioning properties. The warp that is likely to occur in the plywood can be prevented and corrected. The soundproofing, moistureproofing and heat insulating effects can be improved. Resource saving of natural wood can be realized (40% or more). Easy to cut. It is easy to recycle because of lamination of styrene resin.

[Brief description of drawings]

FIG. 1 is a sectional view.

FIG. 2 is an exploded perspective view before stacking.

[Explanation of symbols]

 1, 2 Extruded low foam plate 3, 4, 5, 6 Polystyrene foam A, B Directionality by extrusion stretching

Claims (1)

[Scope of utility model registration request] 1. A styrenic resin extruded low-foaming plate is formed by laminating and integrating a polystyrene foam body between two layers, the directionality of which is formed by extruding and stretching the at least four layers alternately in the vertical and horizontal directions. Characteristic resin lightweight laminated board.