JPH0415632Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a formwork member made of plastic.

[Conventional technology]

Traditionally, plastic molded products have been widely used for food display containers, decorative railings, picture frames, etc. as they are inexpensive and easy to mass produce. In order to make small-sized molded products using plastic materials, it is possible to integrally mold a predetermined overall shape by injection molding, extrusion molding, etc. At this time, there is not much plastic material used, and the entire It was also relatively light in weight.

[The problem that the idea attempts to solve]

However, when it comes to large plastic molded products with a side length of about 40 to 60 cm, it is difficult to injection mold them in one piece, so to make a thick plate-like product, for example, multiple thin plates are pasted together. The need arose. As a result, there were problems in that more plastic raw materials were used, the overall weight became heavier, and the cost also increased.

Moreover, as the size of the molded product increases, it becomes more likely to deform due to external force or its own weight, making it difficult to obtain a strong plastic molded product. Therefore, containers for storing heavy foods, etc., or long plastic molded products have low durability and are difficult to be widely used.

Furthermore, as shown in Japanese Utility Model Application Publication No. 48-40310, it has been considered to construct a lightweight box frame by combining foamed resin plates, but this box frame uses foamed resin, so it is not mechanically efficient. There were disadvantages in that strength and adhesive strength were low, and dirt on the surface was difficult to remove.

[Means to solve the problem]

In view of the above, the present invention involves forming a plastic material such as styrene or acrylic into an elongated flat hollow body by extrusion molding, and a first wall forming the outer wall of the hollow body in the longitudinal direction. The plastic mold member is provided with an outwardly expanding groove extending in the direction of the plastic frame member, and a U-shaped groove extending in the longitudinal direction is formed in the second wall body forming the inner wall.

[Effect]

The plastic formwork member of the present invention is a hollow body with longitudinal grooves, so it is strong and lightweight. By combining multiple formwork members, it can be used to form various types of containers, boxes, etc. products can be configured.

〔Example〕

Hereinafter, embodiments of the present invention will be explained in detail with reference to the drawings.

As shown in Fig. 1A and Fig. 1C, respectively, a cross-sectional view and a perspective view are shown in Fig. 1C. It is what was done. This formwork member P has a first wall 1 and a second wall 2 that are substantially parallel to each other, and has an upper wall 3 and a lower wall 4 that are continuous with the first and second walls 1 and 2. It has an elongated flat plate shape with an internal space S.

Moreover, the first wall body 1 has an outwardly expanding groove 1.
a, and the second wall body 2 has a U-shaped groove 2a.
is formed. Forming these grooves 1a and 2a not only increases the mechanical strength of the formwork member P, but also works effectively from a design standpoint. Incidentally, these grooves 1a and 2a may be formed in two or more grooves as shown in FIG. 1B.

In this way, the formwork member P formed with the internal space S by the first and second walls 1 and 2 and the upper and lower walls 3 and 4 can be combined with other members of the same or different shapes. Display boxes and various other products can be manufactured using this method. Figure 2 shows
A box H is created using the plastic formwork member P of the present invention.
By applying adhesive to the groove 2a formed in the form member P and then inserting the bottom plate B, a light and beautiful box body can be obtained with a simple operation. can.

As shown in FIG. 3, which is an enlarged view of section A in FIG. The end surfaces may be brought into contact with each other and bonded. In this way, a beautiful box H can be easily obtained. Further, by bonding the bottom plate B as described above, the strength of the box H as a whole can be increased. Further, the bottom plate B can be made of various materials such as glass and metal, and is not limited to plastic. For example, the bottom plate B can be made of glass to form a picture frame.

Furthermore, by making the plastics forming the first and second walls 1 and 2 different colors,
It can be a visual change.

[Effect of idea]

As described above, according to the present invention, a plastic material such as styrene or acrylic is formed into a long flat hollow body by extrusion molding, and the first wall forming the outer wall of the hollow body has longitudinal By configuring the plastic formwork member by forming a U-shaped groove extending in the longitudinal direction on the second wall that forms the inner wall, the plastic form member is light in weight.
It is possible to obtain a plastic formwork member that is inexpensive, has high mechanical strength and heat insulation properties, and is highly suitable for mass production.
Further, by combining these plastic mold members or other members, various products such as containers and boxes can be easily manufactured.

[Brief explanation of drawings]

1A and 1B are sectional views showing a plastic form member according to an embodiment of the present invention, and FIG. 1C is a perspective view thereof. FIG. 2 is a partially cutaway perspective view of a box to which the plastic formwork member of the present invention is applied. FIG. 3 is an enlarged view of section A in FIG. 2. P...Plastic formwork member, 1...First wall, 1a, 2a...Groove, 2...Second wall, S...
Internal space, H... box body.

Claims (1)

[Scope of utility model registration request] A plastic material such as styrene or acrylic is formed into a long flat hollow body by extrusion molding, and the first wall forming the outer wall of the hollow body is provided with outwardly expanding grooves extending in the longitudinal direction. What is claimed is: 1. A plastic formwork member characterized in that a U-shaped groove extending in a longitudinal direction is formed in a second wall body forming an inner wall.