JPH0744472U - Resin lightweight laminate - Google Patents

Abstract

(57) [Summary] [Structure] A resin light-weight laminate, which is a laminate sheet S in which ten layers of extruded low-foam stretched sheets 1 to 10 are laminated alternately in the vertical and horizontal directions formed by the extrusion stretching. Simultaneously with the molding of the molding plate 20 from the expanded particles, the molding plate 20 is fused and integrated with the molding plate. [Effect] Strength is strengthened, warpage is prevented and corrected, weight is reduced and cushioning is maintained, soundproofing, moistureproofing and heat insulation effects are achieved, and natural wood resources are saved. It is easy to recycle due to the lamination of styrene resins. Can be cut to a size suitable for the application.

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 in order to have more elasticity as plywood, a sponge layer or Styrofoam layer is provided between the decorative veneer boards. Although a device to form it has also been proposed (Japanese Utility Model Laid-Open No. 58-191216), it is not stable in strength because it is not lightweight and can maintain elasticity and cannot prevent warpage peculiar to plywood. . 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 styrene-based resin laminated plate which is effective in preventing the occurrence of warpage as well as being lightweight and having elasticity cushioning.

[0004]

[Means for Solving the Problems]

 As the resin lightweight laminate according to the present invention that can achieve the above-mentioned object, a thin extruded low-foam stretched sheet made of styrene-based resin is laminated in at least 6 layers with the orientations formed by the extrusion stretching alternated vertically and horizontally. The laminated sheet is characterized in that it is fused and integrated with the molding plate at the same time as molding of the molding plate from styrene resin foam particles.

[0005]

[Action]

 Since the resin lightweight laminate according to the configuration of the present invention is provided with a laminated sheet in which at least 6 layers are laminated by alternately extruding a thin extruded low-foam stretched sheet made of styrenic resin in the vertical and horizontal directions. , The directions can be mutually complemented and offset, and the occurrence of warpage can be prevented and corrected. Further, since the above laminated sheet is fused and integrated with the molded plate at the same time when the molded plate is formed from the styrenic resin foamed particles, both parties can fuse and bond their joint surfaces together without using an adhesive means. Therefore, a very strong joint can be achieved.

Further, it is possible to exert the functions of reducing the weight and cushioning, soundproofing, moistureproofing and heat insulation.

[0007]

【Example】

 Next, an embodiment of the present invention will be illustrated with reference to the drawings. Reference numerals 1 to 6 represent thin extruded low-foam stretched sheets of 6 layers of styrene resin such as polystyrene. The extruded and stretched direction is alternated vertically and horizontally, for example, as shown in FIG. If there is, the other adjacent one is alternately combined so as to have a width B to form a laminated sheet S of 6 layers. Reference numeral 20 denotes a molding plate molded from styrene foam particles such as polystyrene, and the above-mentioned 6-layer laminated sheet S is set in a molding die when molding the molding plate 20 and molded at the same time as molding of the molding plate 20. It is fused and integrated with the plate 20. That is, the laminated sheet S and the molding plate 20 are bonded to each other without using an adhesive.

When the application is, for example, a concrete construction panel, the size is about 1000 × 2000 mm, and in other applications, it is cut and used. Although the laminated body shown in the figure has 6 layers, it may be carried out with 7 layers or more, and in that case, the directionality produced by the extrusion stretching is alternately carried out. Specific examples of the present invention will be given below.

Six pieces of 0.2 mm thick polystyrene extruded low-foam stretched sheet (trademark: Labeck-Sekisui Plastics Co., Ltd.) having a specific gravity of 0.5 are bonded by adhesion while crossing the directionality of the extrusion stretching. It was For the adhesion at this time, the trademark Esdyne 235L (manufactured by Sekisui Chemical Co., Ltd.) was used as an adhesive.

A laminated sheet of the above-mentioned 6-layer polystyrene extruded low-foam stretched sheet is set in a molding die, and polystyrene foam particles (trademark: Eslen beads-Sekisui Plastics Co., Ltd.) are placed in the molding die. Filling, so-called bead molding with steam, and fusing to form a molded plate 20 (foaming ratio 20 times) to a thickness of 5 mm, and at the same time, the above laminated sheet S is fused to the molded plate 20 without using an adhesive. An integrated laminated plate was obtained. The weight in this case was 1340 g / m ² .

In addition, when the total density in the case of the specific example was examined, it was light as follows. Polystyrene extruded low-foam stretched sheet (0.2 mm thick, density 488 kg / m ³ ) × 6 → 1.2 mm thick Molded plate made of polystyrene foam particles (15.0 mm thick, density 50 kg / m ³ ) × 1 → 15.0 mm thick TOTOAL density = 82.7 kg / m ³

[0012]

[Effect of device]

 As described above, according to the configuration of the present invention, it is suitable for building materials such as flooring materials, wall materials, and ceiling materials, especially interior panels and concrete construction panels for concrete buildings. At the same time as forming a molded plate from styrene resin foam particles, a laminated plate having a tough surface, in which at least 6 layers are laminated by alternating the longitudinal and lateral directions formed by the extrusion stretching, is fused with the molded plate. It has the following effects because it is strongly integrated. A laminated sheet of 6 layers or more by low foaming stretching strongly strengthens the molded plate from the styrenic resin foam particles and improves the strength. It is possible to reduce the weight and retain cushioning properties. A laminated sheet with crossed directions can prevent and correct warpage. The soundproofing, moistureproofing and heat insulating effects can be improved. Resource saving of natural wood can be realized. It is easy to recycle because it is a stack of styrene resins. Easy to cut.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a laminated body.

FIG. 2 is a partially enlarged view of FIG.

FIG. 3 is a perspective view of an extruded low-foam stretched sheet.

[Explanation of symbols]

 1-6 Extruded low-foam stretched sheet S Laminated sheet 20 Formed plate from foamed particles A, B Directionality by extrusion stretching

Claims (1)

[Scope of utility model registration request] 1. A laminated sheet obtained by laminating at least 6 layers of a thin extruded low-foam stretched sheet made of styrene-based resin, the orientation of which is formed by the extrusion-stretching is alternated lengthwise and widthwise to form a molded plate made of expanded styrene-based resin particles. A lightweight resin laminated board characterized by being fused and integrated with a molding board at the same time as molding.