JPS5814714A - Form material - 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] This invention eliminates the need to apply a release agent each time it is used.
The present invention relates to molds used for manufacturing cement-based, gypsum-based, or cement-gypsum-based secondary products, and for pouring concrete in civil engineering and construction work.

Conventionally, molds and formwork used for manufacturing secondary cement products such as tiles and tiles, and for pouring concrete in civil engineering and construction work, can be released easily if a release agent is not applied each time. However, there are drawbacks such as the uneconomical use of a release agent and the complicated work involved in applying the release agent.

No. 2 The purpose of this invention is to provide a molding material that eliminates the above-mentioned drawbacks, and the molding material of this invention that meets the above purpose has rubber-based, synthetic rubber-based, synthetic resin-based,
Alternatively, a surface layer having good releasability made of a mixed system thereof is integrally laminated and fixed.

Examples of this invention will be described below with respect to peelability, elasticity, chemical resistance,
This will be explained by taking as an example a molded material to which polyurethane rubber, which has excellent durability, is fixed as a surface layer. The fixing to the base mold is carried out using a bonding method using an adhesive, a baking method, or the like.

FIG. 1 is a perspective view showing an example of a mold material in which a metal platform used as a formwork for civil engineering and construction is used as a base mold 1, and polyurethane rubber 2 is integrally laminated and fixed on the surface of the metal platform.
The figure is a side view of the product, and it can be used repeatedly without applying a release agent. In addition, in Fig. 3, the gutter lower mold is used as the base mold 1a, and polyurethane rubber 2 is applied over the entire inner surface of the base mold 1a.
An example of a molded material in which the molded materials are laminated and fixed is shown, and like the molded materials explained in FIGS. 1 and 2, it can be used repeatedly without applying a release agent.

Figures 4 and 5 show an automatic thick slate (cement tile) forming apparatus using upper molds 3 and 3a in which polyurethane rubbers 2 and 2 are laminated and fixed on the bottom surfaces of base molds 1b and 1c, leaving their peripheral edges. The apparatus shown in FIG. 4 has a side frame 4 mounted on the outer periphery of the upper mold 3 so as to be movable up and down, and the apparatus shown in FIG. A side frame 4a is attached to the side frame 4a. In the apparatus shown in FIG. 4, mortar 6 is placed on the lower mold 5 through a wire mesh and dewatering cloth (not shown), and the side frame 4 is
The upper mold 3 is lowered while the upper mold 3 is lowered, and the mortar 6 is pressed and water-pressed to form the mortar 6. In the apparatus shown in FIG. put on it,
The upper mold 3a is lowered and the mortar 6 is compressed and water-molded. At this time, the side frame 4a is rising. In the apparatus shown in FIG. 4, the upper mold 3 is
In the apparatus shown in FIG. 5, the upper mold 3a is raised without lowering or lowering the side frame 4a, and the forming N
o4 The product is left on the lower molds 5, 5a or held on the lower surface of the upper molds 3, 3a, and the molded product is transferred onto a receiving plate (not shown) by known appropriate means. Note that the lower molds 5 and 5a are provided with dehydration holes in their upper plates, and in some cases, the lower molds 5 and 5a are provided with dehydration holes.
5a is formed hollow and is capable of vacuum suction. In some cases, polyurethane rubber is laminated and fixed on the upper surface of the lower molds 5, 5a to form a base mold, and in this case, the upper mold is provided with dehydration holes or further vacuum suction.

In the figure, 7 and 7a are upper mold bases, and 8 and 8a are press ram heads.

In this invention, in addition to polyurethane rubber, natural rubber, synthetic resin such as acrylic resin, or synthetic rubber can be used for the surface layer.
The material may be filled between the base mold and a surface mold (not shown), and after the raw material is cured, the surface mold may be removed to form a surface layer.

This invention is constructed as described in detail and has the following effects.

No. 5 (1) There is no need to apply a release agent to the mold each time, which is extremely economical.

(2) No release agent remains on the surface of the molded product, and it has good adhesion with the finishing paint.

(3) The surface of the mold material can be faithfully expressed in the molded product.

(4) Rust does not occur on the metal profile and maintenance is easy.

[Brief explanation of the drawing]

The attached drawings show embodiments of the present invention, and the first
The figure is a perspective view of one example of the mold material, FIG. 2 is a side view of the same, FIG. 3 is a perspective view of another example of the mold material, and FIGS. 4 and 5 are views showing two examples of the molding section of the automatic thick slate molding device. It is. 1, 1a, 1b, 1c... Base mold 2... Polyurethane rubber (surface layer) 3, 3a... Upper mold 5, 5a... Lower mold Patent applicant
Nakano Industrial Machinery Co., Ltd.

Claims (1)

[Claims] A mold material characterized in that a surface layer with good releasability made of rubber, synthetic rubber, synthetic resin, or a mixture thereof is integrally laminated and fixed on the surface of a base mold.