JPH0744470U - Resin lightweight laminate - Google Patents

Abstract

(57) [Summary] [Structure] A lightweight laminated board made of polystyrene foam 1,
Simultaneously with the molding of the molded plate 5 from the styrenic resin foam particles, a laminated body in which at least 4 layers of 2, 3, and 4 formed by the extrusion and drawing are alternately laminated in the vertical and horizontal directions, and are fused and integrated with the molded plate 5. I am allowed. [Effect] It is possible to improve strength, prevent and straighten warpage, reduce weight and retain cushioning properties, soundproof, moistureproof and heat insulating effects, 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, in the case of a molded plate molded from styrenic resin foam particles, a relatively thick one can be manufactured, but it is fragile and easily chipped.

In view of the above, the present invention aims to obtain a resin lightweight laminated plate which is effective not only for weight reduction and retention of elasticity but also for increasing strength and preventing warpage.

[0004]

[Means for Solving the Problems]

 As a constitution of the resin lightweight laminate according to the present invention which can achieve the above-mentioned object, a laminate obtained by laminating at least four layers in which polystyrene foam is extruded and stretched is alternated in the vertical and horizontal directions. It is characterized in that it is fused and integrated with the molding plate simultaneously with the molding of the molding plate from the expanded resin particles.

[0005]

[Action]

 In the resin lightweight laminated board according to the configuration of the present invention, the polystyrene foam, which is fused and integrated with the molding board at the same time as molding of the molding board from the styrene resin foam particles, has the directionality formed by the extrusion and stretching. Since four or more layers are provided alternately, the directions are complemented each other, resulting in an increase in strength, reinforcement of the forming plate, and prevention of warpage in the whole and correction of warpage. . In addition to this, the polystyrene foam can also achieve the effects of weight reduction and cushioning, soundproofing, moistureproofing and heat insulation.

[0006]

【Example】

 Next, embodiments of the present invention will be illustrated below with reference to the drawings. 1, 2, 3, and 4 represent laminated polystyrene foams composed of four layers. The polystyrene foams 1, 2, 3, and 4 are arranged such that the directions formed by the extrusion and stretching are vertically and horizontally crossed, for example, as shown in FIG. It is a combination. 5 is a molding plate molded from styrene foam particles such as polystyrene. The above-mentioned four layers of polystyrene foam are set in a molding die when molding the molding plate 5, and molded at the same time as molding the molding plate 5. It is fused and integrated with the plate 5.

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 laminated between the plywood layers, but it is also possible to implement five or more layers, and in that case also, the directionality formed by extrusion stretching must be interleaved in the vertical and horizontal directions. Is.

As the polystyrene foam, one that does not exhibit secondary foamability after a long period of time after production can be preferably used. Specific examples of the present invention will be given below. A polystyrene foam having a thickness of 1.4 mm, a specific gravity of 0.08, and a foaming ratio of 13 times (trademark: S-ren sheet-manufactured by Sekisui Plastics Co., Ltd.) was used and the directionality was crossed to each other and adhered by adhesion. I matched it.

A trademark: Esdyne 235L (manufactured by Sekisui Chemical Co., Ltd.) was used as an adhesive for the adhesion at this time. A laminate of the above-mentioned four layers of polystyrene foam is set in a molding die, polystyrene foam particles (trademark: Eslen beads-Sekisui Plastics Co., Ltd.) are filled in the molding die, and steam is used for so-called Bead molding is performed to mold a molded plate. At the time of this molding, a laminated body of four layers of polystyrene foam is secondarily foamed and fused and integrated into a molding plate by bead molding without using an adhesive, and a four-layer thickness is about 8 mm by secondary foaming. Along with the molded plate, a lightweight resin laminate with high foaming of about 19 mm was obtained. The weight in this case was 980 g / m ² .

In the following specific examples, the total density is as follows: polystyrene foam (2.0 mm thick, density 55 kg / m ³ ) × 4 → 8.0 mm molded plate made of styrene resin foam particles (10.0 mm thick) , Density 54 kg / m ³ ) × 1 → 10.0 mm TOTAL density = 54.4 kg / m ³

[0011]

[Effect of device]

 According to the configuration of the present invention as described above, it is suitable for building materials such as flooring materials, wall materials, and ceiling materials, especially as interior panels and concrete construction panels for concrete buildings. Since the laminated body of four layers of polystyrene foam can be fused and strongly integrated with the molded plate at the same time as molding of the molded plate of the styrene resin foam particles, the following effects can be obtained. A four-layer laminate is used to reinforce the molded plate with styrenic resin foam particles to improve the strength. Since it is highly foamed, it can be made lighter and can retain its cushioning properties. It is possible to prevent and correct the occurrence of warpage in the laminated body having crossed directions. 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 an overall sectional view.

FIG. 2 is an exploded perspective view showing an extruded polystyrene foam before being laminated.

[Explanation of symbols]

 1,2,3,4 Polystyrene foam 5 Molded plate A, B Directionality by extrusion stretching

Claims (1)

[Scope of utility model registration request] 1. A laminate obtained by laminating at least four layers of polystyrene foam, the orientation of which is formed by extrusion and stretching thereof being alternated in the vertical and horizontal directions, and at the same time as molding of the molded plate from the styrenic resin foam particles and melting with the molded plate. A lightweight resin laminated board characterized by being integrally attached.