JPS6232006A - Manufacture of slip preventive and abrasion-resistant extrusion molded board - 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 (Industrial Field of Application) The present invention relates to a method for manufacturing an anti-slip and wear-resistant extruded plate that is highly useful as a building material.

(Prior art and problems to be solved by the invention) Inorganic extruded boards have a wide range of uses as building and construction materials, but because they are hard and have excellent surface smoothness, they can be used as treads for stairs in hallways, etc. When used, it lacked anti-slip properties.

In addition, surface coating is performed for the purpose of surface decoration or pattern formation.

Conventional methods rely on methods such as wet pouring, wet coating, or dry material scattering and curing.In either method, when the surface layer material crosses, the air contained in the aggregate becomes internal bubbles, causing pins to form on the coating surface. Not only does it damage the appearance as it causes holes.

This has the drawback of weakening the adhesion of the surface layer material to the extruded substrate.

The present invention eliminates the drawbacks of the conventional methods and provides a method for efficiently producing an anti-slip and wear-resistant extruded plate having a surface of excellent quality.

(Means and effects for solving the problem) The present invention provides a surface layer material containing hard aggregate, cement, and an inorganic admixture on the surface of an inorganic extrusion molded plate that is continuously extruded from an extrusion machine mouthpiece. The cement and inorganic admixture are applied to the raw board by supplying it to a predetermined thickness in a vacuum state, leveling it to the predetermined thickness with a brushing roll, and pressing it onto the extrusion-molded raw board to make a rough surface. The constituent elements of the invention are to integrate the deposit and to expose the hard aggregate to the surface and to fix the surface layer, thereby efficiently manufacturing an extrusion-molded plate with excellent quality and anti-slip and wear resistance. This is what made it possible. The constituent elements of the present invention and their effects will be explained below.

First, in the present invention, the surface layer material 4 is supplied to a predetermined thickness from a supply device 3 having a vacuum device 2 at the tip 1 of the extrusion die, and is further leveled to a predetermined thickness by a brushing roll 5, and is then formed into a green plate. 6 to form a rough surface, it is possible to connect the supply of the surface layer material 4 with the extrusion molding operation and carry out the process consistently and efficiently without requiring any separate equipment. The brushing roll 5 can be appropriately positioned on the extrusion molding plate 6, but when the extrusion molding plate 6 is hollow extruded, the middle ball 7 is moved from the extrusion die 1 in order to prevent deformation due to compression. The center of the protruding brushing roll 5 is the tip 7 of the medium ball.
′. Further, the thickness of the surface layer is adjusted by the supply port 3' of the supply device 3, and can be arbitrarily adjusted by moving the brushing roll 5 up or down.

Next, as mentioned above, the surface layer material 4 supplied onto the raw board 6 has a vacuum degree of 70, although it differs depending on the blending composition and mainly on the aggregate composition.
Degassing and suction of emHt or higher is required.

When the surface layer material 4 supplied in a vacuum state is supplied in a sealed state onto the vacuum extruded molded green plate 6 and joined, the two are placed in a normal pressure atmosphere from a vacuum state and are brought into close contact by the pressure bonding action of atmospheric pressure. For this reason, the surface material 4 and the molded raw board 6
When integrated and fused, it exhibits strong adhesion.

The surface layer material 4 thus supplied onto the extrusion-molded raw board 6 is pressed and smoothed by the brushing roll 5 to form a rough surface; however, the surface layer 8 has no internal air bubbles.

No pinholes or microcracks occur on the surface. Therefore, the vacuum degassing step of the surface layer material 4 in the present invention is an important essential requirement.

The surface layer material 4 of the present invention is mainly made of hard aggregate (olivine sand, various sand stones, ceramic 1+Ii powder, etc.),
In addition, the amounts of cement and inorganic admixtures should be kept as small as possible without damaging the adhesion of the surface layer.

Further, the particle size of the hard aggregate is usually about 1 to 3 am, and the thickness of one surface layer is about 1.5 to 31 am, but is not limited thereto. The brushing roll pressure is about 5 to 6 kt/cd. The brushing roll 5 had a roll diameter of 100e, and 100 flocked (stainless steel needles with a diameter of 0.1Δ and a length of 2, -) were used per main tube.The composition of the surface material 4 was as follows.

It can be appropriately selected and used depending on the thickness of the surface layer 8.

Although the present invention can be efficiently implemented in the form shown in the drawings, this will be specifically explained below with reference to Examples.

(Example) Compounding of extrusion materials Ordinary cement 100 parts of polymerization Sand stone powder 30 Asbestos 5 Pulp 1 Methyl cellulose 1 Water 30 Mixing of surface material Foundry sand No. 3 100 parts by weight Ordinary cement 50 Sand stone powder 20 Methyl cellulose 3 Water 40 The surface layer material was pressed onto the extrusion molded raw board (thickness: 55M, width: 60mm) with the above composition to a thickness of 21mm using a brushing roll pressure of 51cf/-, cut into 3 pieces of length, and cured in an autoclave using a conventional method to produce the product. shall be.

As is clear from Table 1, it can be seen that the examples in which the surface layer material was vacuum-suctioned had extremely high adhesion strength and wear resistance compared to the comparative examples in which vacuum suction was not performed.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing a method of implementing the present invention. 1...Extrusion mouthpiece, 2...Vacuum device. 3... Supply device, 4... Surface layer material. 5...Brushing roll, 6...Extrusion molded plate. 7...Middle ball, 8...Surface layer. Figure 1

Claims (1)

[Claims] A surface layer material containing hard aggregate, cement, and an inorganic admixture is supplied to the surface of an inorganic extrusion molded plate that is continuously extruded from an extrusion molding machine nozzle to a predetermined thickness in a vacuum state, and is further coated with a brushing roll. By leveling the thickness to a predetermined thickness and pressing it onto the extruded raw board to make it rough, the cement and inorganic admixture are deposited and integrated on the raw board, and the hard aggregate is exposed on the surface to form a surface layer. A method for producing an anti-slip and wear-resistant extruded plate, characterized by fixing the .