JPS6059851B2 - Coated metal plate manufacturing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a coated metal plate in which the surface of a continuously running belt-shaped metal substrate is coated with a resin by extrusion molding, and its purpose is to improve production efficiency.

In this method of manufacturing a coated metal plate, the resin coating should cover all four sides of the metal substrate, including the front and back surfaces and both sides, so generally only one strip of the coated metal plate can be obtained in the reverse direction. However, there was a drawback that the production volume could not be increased with a single production facility due to the limited running speed. The present invention has been made in view of these drawbacks, and will be described below with reference to the embodiments shown in FIGS. 1 and 2.

FIG. 1 is a schematic diagram showing the entire process, and FIG. 2 is a perspective view showing the products obtained in each process.

In FIG. 1, reference numeral 1 denotes a metal substrate made of, for example, a band-shaped material (hoop material) made of a steel plate or an iron plate, and is continuously moved by a feed roll (not shown). (2) is a slitter which slits the metal substrate 1 in the running direction.
(Figure 2a shows such a state). Reference numerals 4 and 4 denote presser rolls, which accurately feed the divided metal substrate 1 into the extrusion mold 5.

In the extrusion mold 5, a resin coating 6 such as vinyl chloride resin, polyester resin, or polypropylene resin covers the front and back surfaces of the metal substrate 1 and the slit end surfaces 3a, (3a) (FIG. 2 shows such a state). ). 7 is a resin cutting machine, which cuts the resin coating 6 connected at the slit end surface 3a.
are divided to obtain independent coated metal plates 8, 8, 8... (
FIG. 2c shows such a situation.

). 9 is a fixed length cutting machine, which cuts the finished product 10 of coated metal plate.
, 10,... are obtained.

Incidentally, if the exposed surface lb of the metal substrate 1 exposed at the end surface cut by the fixed length cutting machine 9 is also covered by additionally adhering a resin material, a coated metal plate whose entire surface is covered with resin can be obtained. Needless to say. As described above, the coated metal plate manufacturing method of the present invention divides a continuously running strip-shaped metal substrate through multiple slits cut in the running direction so as to create alternating steps, and then continuously runs the substrate in this state to form extrusion molding. It is made by covering a metal substrate including the slit end surface with a resin coating using a mold, and it is used to divide a single metal substrate and also cover the cut end surface to obtain a multi-strip coated metal plate. As a result, production efficiency per unit of manufacturing equipment has improved.

[Brief explanation of the drawing]

; Figures 1 and 2 show embodiments of the present invention;
FIG. 1 is a schematic diagram showing the entire process, and FIG. 2 is a perspective view showing the products obtained in each step.

Claims (1)

[Claims] 1. A continuously running strip-shaped metal substrate is divided into sections with multiple slits cut in the running direction so that steps are formed alternately, and the metal substrate, including the end faces of the slits, is coated with resin using an extrusion mold. A method for manufacturing a coated metal plate comprising a coating.