JPS63153122A - Reinforced plastic resin box and its production - Google Patents

Abstract

PURPOSE:To obtain a reinforced plastic resin box, by a method wherein reinforced plastic resin layers are superposed to the front and back surfaces of a core material having a large number of through-holes provided and arranged thereto over the entire surface by drilling, and bonded and unified through the through-holes. CONSTITUTION:A reinforced plastic resin box is provided. That is, a desired box body is formed of a wood plate such as plywood or a cardboard in place of forming a mold and a large number of through-holes 4 are uniformly arranged to the wood plate or cardboard 3 over the entire surface. In this case, the through-holes 4 may be provided by drilling before the box body is formed. Reinforced plastic resin liquids 5, 5' are applied to the front and back surfaces of the box body and the front and back reinforced resin layers are connected and unified through the through-holes 4 to compensate the trouble of the adhesion between the reinforced plastic resin and the wood plate or cardboard.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a reinforced plastic resin box (for example, a speaker box) and a method for manufacturing the same.

Main) Conventional technology A conventional reinforced plastic resin box is made by making a mold corresponding to the desired box, applying a reinforced plastic resin liquid to the inner surface of this mold, letting it dry, and then removing it from the mold or breaking it or dividing the mold. A method has been adopted in which the material is removed.

(c) Problems to be solved by the invention As mentioned above, when manufacturing a large number of boxes using a mold, the unit cost becomes cheaper as the number of boxes manufactured increases.
The more the number of pieces produced is limited and the larger they are, the higher the unit price becomes, and if the inner surface of the mold is uneven, the production becomes more complicated.0 (B) Solved the problem. Therefore, in the present invention, a reinforced plastin resin box is provided by a method completely different from the conventional method as described above.In other words, instead of making a mold, a wooden board such as a plywood board or a cardboard box is provided. In this case, a desired box is formed, and a large number of through holes are evenly distributed over the entire surface of the wooden board or cardboard.
The through holes may be formed before or after forming the box. ), a reinforced plastic resin liquid is applied to the front and back surfaces of the box, and the reinforced plastic resin layers on the front and back are connected and integrated through a through hole, which allows the reinforced plastic resin to be bonded to wood or paper. This is designed to compensate for any defects.

Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.

(E) Embodiment FIG. 1 is a perspective view of a speaker box according to the present invention, and FIGS. 2 and 3 are enlarged sectional views of main parts showing the manufacturing process.

In the drawings, reference numeral 1 denotes a speaker box with an open rear surface and a circular hole 2 for a speaker on the front surface.

As shown in FIG. 2, this speaker box 1 is constructed using a plywood board 6 as a core material, and a large number of through holes 4, 4...
After a plywood board 6 with perforations arranged on the entire surface is formed into a box of desired dimensions, reinforced plastic resin liquid is repeatedly sprayed on the front and back surfaces of the box until the desired thickness is reached. The front and back reinforced plastic resin layers 5, 5' are welded and connected through the holes 4, 4..., and a large number of Since the through holes 4, 4... are bonded together, the entire structure becomes extremely strong. Needless to say, in response to the required strength of the box,
Thickness of reinforced plastic resin layers 5, 5' and through holes 4, 4
The number of ... is taken into account.

Furthermore, in the case of other boxes, such as handbags, the present invention forms the required box from a plywood board with a large number of through holes in advance, so it is possible to divide the inside of the box with a partition or the like. Even if it is installed, it only needs to be applied, so it is extremely easy to work on boxes with complex surface shapes.
Effects of the Invention As described above, according to the present invention, a reinforced plastic box is molded using a wooden board such as a plywood board or cardboard as a core material, so the shape is complicated and large, and it is difficult to manufacture a small number of specially ordered boxes. Although it is ideal for manufacturing, the manufacturing process is extremely simple even when mass-produced, so it has excellent characteristics that can be applied over a wide range of areas.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an embodiment of the speaker box according to the present invention, Fig. 2 is a cross-sectional view showing a part of a plywood board, and Fig. 3 is a cross-sectional view of the same board with a reinforced plastic resin layer applied thereto. , 6 ~ Plywood board 4 ~ Through hole 5.5' ~ Reinforced plastic resin layer December 17, 1986

Claims (2)

[Claims] (1) Using a wooden board such as a plywood board or cardboard with a large number of through holes drilled throughout the entire surface as a core material, a reinforced plastic resin layer is polymerized on the front and back sides of the core material, and the front and back surfaces are bonded through the through holes. A reinforced plastic resin box characterized by having reinforced plastic resin layers bonded and integrated. (2) A box is formed from a wooden board such as a plywood board or cardboard with many holes perforated over the entire surface, and then a reinforced plastic resin liquid is applied to the front and back surfaces of the box, 1. A method for manufacturing a reinforced plastic resin box, characterized in that the front and back reinforced plastic resin layers are bonded and molded through the through holes of the box.