JPS60248345A - Synthetic resin coated metallic plate - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a synthetic resin-coated metal plate used for eaves gutters, roofing materials, exterior materials, etc.

[Background Art 1 Conventionally, synthetic resin-coated metal plates used for eaves gutters, etc., have been provided by coating the front and back surfaces of the metal plate with synthetic resin layers. Since it was formed simply by inserting a flat metal plate into a synthetic resin layer, if the synthetic resin-coated metal plate was subjected to thermal contraction, the coefficient of thermal expansion between the metal plate and the synthetic resin layer would change. Due to the difference, there was a risk that the synthetic resin layer would peel off from the metal plate, and the strength of the masko-coated metal plate was also weak.

[Objective of the Invention 1] The present invention has been made in view of the above points, and it is possible to integrate a metal plate and a synthetic resin layer to prevent them from peeling off, and to improve the strength. The object of the present invention is to provide a synthetic resin-coated metal plate.

[Disclosure of the Invention] That is, the synthetic resin-coated metal plate according to the present invention includes a metal plate 1 provided with a plurality of parallel protrusions 2 formed by bending the metal plate 1, and penetrating the metal plate 1 on the front and back surfaces. The metal plate 1 is formed by inserting a through hole 3 into the synthetic resin M4, and by forming a plurality of parallel protrusions 2 on the metal plate 1, the metal plate Increase the strength of 1 itself,
Furthermore, the metal plate 1 and the synthetic resin layer 4 are integrated by bonding the front and back synthetic resin layers 4 through the through holes 3, thereby achieving the above object.

The present invention will be described in detail below based on an example of an eaves gutter.

As shown in Fig. 1, a metal plate 1 made of a thin steel plate, etc.
A plurality of parallel protrusions 2 are provided in the longitudinal direction. The protrusions 2 can be formed by bending the metal plates 1 by passing the metal plates 1 between striped rolls. Further, between each of the protrusions 2.2, the metal plate 1 is provided with a large number of through holes 3 that penetrate the front and back surfaces of the metal plate 1. This hole 3
This can be applied, for example, by passing it between needle rolls having a large number of needles on the outer circumferential surface. The metal plate 1 with the protrusions 2 and through holes 3 engraved in this way is made of synthetic resin scraps 4.
inserted inside.

Therefore, the synthetic resin-coated metal plate having the above structure has, for example, v
As shown in Figure J1, it can be used for eaves gutters, etc. Since the metal plate 1 is provided with a plurality of protrusions 2.2 in its longitudinal direction, the section modulus increases and the strength of the metal plate 1 itself can be increased, and the adhesive area with the synthetic resin fri4 also increases. This makes it possible to increase the bonding strength between the metal plate 1 and the synthetic resin layer 46. Moreover, since the metal plate 1 is provided with through holes 3, as shown in FIG. The synthetic resin layers 4 on the front and back surfaces of the metal plate 1 are bonded together through the through holes 3, and as a result, the resin layer 4 and the metal plate 1 can be firmly bonded.

In addition, in the above embodiment, eaves gutters were explained as synthetic resin-coated metal plates, but the present invention is not limited to this in any way, and may be applied to flat roofing materials, exterior materials, etc. as shown in FIG. 3, for example. You can also do it. In addition, the protrusions 2 formed on the metal plate 1 are formed by bending the metal plate 1 inward as shown in FIG. 2 may be formed. Further, the shape of the through hole 3 is not limited either, and it may be formed as a long hole like a slit.

[Effects of the Invention] As described above, the present invention provides a metal plate with a plurality of parallel protrusions, a metal plate with through holes penetrating the front and back surfaces, and inserts this metal plate into a synthetic resin layer. Therefore, it is possible to increase the strength of the metal plate itself and the bonding strength between the metal plate and the synthetic mmyri, prevent the synthetic resin layer from peeling off from the metal plate, and obtain a lightweight and strong coated metal plate. It is something that can be done.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway perspective view of an eaves gutter according to an embodiment of the present invention, vJ
2 is an enlarged partially cutaway sectional view of the same as the above, FIG. 3 is a partially cutaway sectional view of another embodiment of the same, and FIG. 4 is a partially cutaway sectional view of yet another embodiment of the same. 1 is a metal plate, 2 is a protrusion, 3 is a through hole, and 4 is a synthetic resin layer. Agent Patent Attorney Ishi 1) Ai Seven W! , Figure 1 Figure 2

Claims (1)

[Claims] (1) A plurality of parallel protrusions formed by bending the metal plate are provided on the metal plate, and through holes are drilled through the metal plate on the front and back sides, and this metal plate is inserted into the synthetic resin layer. A synthetic resin-coated metal plate characterized by comprising: