JPH0547065Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a side plate for a box made by adhering a styrene-butadiene copolymer resin with hinge properties to the surface of a plate-shaped extruded styrene resin foam. Leave 1mm to 0.5mm of resin on the parts etc.
When cut from the inside in the shape of a letter, a hinged side plate is suitable for bending and does not break, making it an excellent side plate. Hinge refers to the ability to mate, and the property of not easily breaking even after repeated bending.

In the conventional method, when making a box with side plates with corners or rounded corners by making V-cuts or saws in the foam extrusion molded product, in order to make the former box with right-angled corners, a V-cut was made and cut away. The box was created by applying adhesive to the cut portions of the side panels and gluing them together. The latter rounded corners are possible if there is a skin layer on the surface, but the skin layer is a polystyrene resin layer and has the disadvantage that it easily breaks when bent. Therefore, adhesive was applied in this case as well.

In order to eliminate these drawbacks, we have arrived at this invention as a result of intensive research.

(Means and Effects for Solving the Problems) The gist of the present invention is to provide a synthetic resin box side plate in which a styrene-butadiene copolymer resin layer is adhered to the surface of a plate-shaped extruded styrene resin foam. It is something to do.

This improves the above-mentioned conventional drawbacks by coating the surface of the side panel with a skin layer, which allows the skin layer to wrap around the side wall of the box without breaking or peeling even when V-cuts are made with the skin layer left at the corners. Can be done.
As the resin for the skin layer, since the foam of the main body is styrene-based, it is advantageous to use a styrene-butadiene-based copolymer resin with hinge properties that is compatible with the styrene-based foam, as it has excellent adhesion. At the same time, the skin layer is made of a resin with a different color from that of the foam molded body, making the design more beautiful and more effective. As mentioned above, the effect of creating a skin layer with hinge properties is excellent.

In the present invention, the plate-shaped foam refers to a flat plate or a flat plate with irregularities, or an extruded plate-like product with irregularities. In order to form a styrene-butadiene copolymer resin layer on the surface of these plate-shaped foams, for example, during extrusion foaming, the styrene resin foam is heated and deposited on the surface of the styrene resin foam in the same mold. In the case of a product, by adhering it to the surface of the convex portion, a side plate having a strong styrene-butadiene copolymer resin layer with good adhesion can be easily obtained. The thickness of the skin layer is preferably about 0.1 to 0.5 mm.

As described above, the present invention is an excellent synthetic resin box side plate that has improved the conventional drawbacks.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an example of the surface of a synthetic resin box side plate having corners, and FIG. 2 is a horizontal cross-sectional view of the side plate. FIG. 3 is a diagram showing a vertical cross section of the side plate. (Enlarged view). 1 is the corner of the box where only the surface film remains due to the V-shaped cut, and 2 is the hinged skin layer provided on the side plate.

Claims (1)

[Scope of utility model registration request] A synthetic resin box side plate comprising a styrene-butadiene copolymer resin layer adhered to the surface of a plate-shaped extruded styrene resin foam.