JPS6036113A - Manufacture of normal-temperature hardening resin product - Google Patents

Abstract

PURPOSE:To facilitate the coloring and patterning while forming a mold appropriately with a wood or a gypsum mold by making a molding film adsorb on the surface of a particle-like matter solidified in a specified shape using a binder while the molding film employs the colored or convex-concave patterned one. CONSTITUTION:A die section 2 is formed on a top of a master mold 1. The internal side of a frame body 4 communicates with a hollow chamber 5 through a plurality of vent holes 7 and 7. Particle-like matter 8 such as metal powder, glass powder and sand containing a binder is preferably about 50-600mum in the particle size. A molding film 9 flexible but breathing employs the one with a convex-concave pattern such as drawing pattern and stitch pattern applied on the surface thereof and then, attached onto a molding to form a convex-concave pattern on the molding. In this case, excess parts are cut out of the molding film 9.

Description

[Detailed description of the invention] The present invention relates to a method for manufacturing a cold-curing resin product.

Conventionally, in the production of room-temperature-curing resin products, a mold release agent is applied to the surface of the product cavity of a mold, the mold is closed to define the product cavity, and a liquid room-temperature-curing resin is injected into the product cavity. After the resin has hardened, the mold is opened, the molded product is taken out, the molded product is removed, and the molded product is colored and painted. However, this conventional manufacturing method requires the use of expensive metal molds and resin molds, which increases the production cost of the product.Furthermore, when coloring and painting the molded product, the molded product is coated with 44% of the paint. It was necessary to wash and remove the mold release agent and to roughen the surface of the molded product, making it difficult to color the molded product. In addition, since room-temperature curing resin products are required to have specularity and gloss, equipment that takes this into consideration is required, and this can lead to problems such as complicated processing and poor productivity. Ta.

The present invention was made in order to solve the problems described in "U".The purpose of the present invention is to enable molding using inexpensive wooden molds or plaster molds, and also to allow molded products to be easily colored and glossed at room temperature. The purpose of the present invention is to provide a method for manufacturing curable resin products. Hereinafter, embodiments of the present invention will be described in detail #11 based on the drawings.

(1) is a master mold made of wood or plaster, and on the top surface of the master mold (1), a mold part (2) having a shape almost the same as a part of the outer diameter of the room-temperature curing resin product is formed. At the same time, a truncated cone-shaped injection port model (3) is erected. (4) is a frame body, and a hollow chamber (5) is formed in the constituent members of the frame body (4), and the hollow chamber (5) has a ventilation pipe (
6) is connected to a vacuum pump (not shown). Also, there are multiple pens on the inside surface of the frame (4)! ·hole(
7) Communicates with the hollow chamber (5) via (7).

(8) is a particulate material such as metal powder, glass powder, sand, etc. containing binder, and the required property of this sticky material (8) is that it has good filling properties. Further, the particle size of the particulate material may be about 1 to 3 olls, but care must be taken because the smoothness of the surface of the molded product is affected by the particle size. If the particle size is small, the smoothness of the molded product surface 111 and the transferability of fine uneven patterns will be improved, but the particulate matter (8) becomes difficult to handle and generates dust, which worsens the environment. , the opposite phenomenon will occur with coarse particles, and generally with particle sizes of 50 to 6
00IIF+! degree is better. Further, as the pinter, furan-based resin to which a curing catalyst is added in advance, urethane-based resin that is hardened by amine gas, sodium silicate that is hardened by carbon dioxide gas, etc. can be used.

(9) is a molded film that has iiJ flexibility and is not breathable, and is made of polyethylene, polypropylene, polystyrene,
Those made from synthetic resins such as vinyl chloride, vinylidene chloride, polyamide, polycarbonate, ionomer, ethylene/vinyl acetate copolymer, ethylene/vinyl acetate copolymer, styrene/butadiene copolymer, polyolefin book polymer, Some are made of rubber such as butyl rubber and natural rubber. These materials containing or coating coloring agents such as pigments, dyes, and metal foils, and those containing or coating ultraviolet absorbers are used as the molding film (9) and then directly attached to the molded product. Molded products can be colored by In addition, uneven patterns such as grain patterns and thread patterns can be added to the table 1f11.
It is also possible to create an uneven pattern 41 on a molded product by using it as a molding film (9) and then directly adhering it to the molded product. In this case, the excess portion of the molded film (9) may be cut and removed, but the molded product and molded film (9)
If the adhesion to the molded film (9) is poor, treatment such as applying an adhesive to the molded film (9) is required. (10) is a non-breathable shielding membrane made of plastic, rubber, metal, etc.
Some are made of paper.

(11) is a resin that hardens at room temperature, and includes polyurethane, polyester, acrylic, epoxy, polyamide, furan, etc. Instead of these resins, polyurethane, silicone,
Synthetic rubber such as polysulfide may also be used. Moreover, a foaming product can be made by adding a foaming agent to these products. Furthermore, fillers such as calcium carbonate, talc, clay, silica, and alumina, and reinforcing materials such as glass fibers, carbon fibers, ceramic whiskers, and metal whiskers may be mixed therewith.

Next, a method for manufacturing a room temperature curable resin product will be explained.

The upper mold (4) is placed on the upper surface of the master mold (1), and particulate material (8) containing a binder is charged and filled into the space defined by the master mold (1) and the upper mold (4). do. Next, when the particulate matter (8) contains a furan-based resin, the particulate matter (8) is cured naturally by the resin.
In addition, when the particulate matter (8) contains urethane resin and thorium silicate, amine gas and carbon dioxide gas are passed through each to harden the urethane resin and sodium silicate. The substance (8) is solidified (see Figure 1). After the particulate matter (8) has hardened, the upper frame body (4) is separated and raised from the master mold (1), the hardened particulate matter (8) is extracted from the mold part (2), and then the hardened particulate matter (8) is removed from the mold part (2). By driving the vacuum pump, the frame (4
) is suctioned and depressurized in the hollow chamber (5) to apply suction to the surface of the particulate matter (8) of the upper body (4).

Next, a shielding film (10) is attached to the upper surface of the upper surface of the upper body (4) and the upper surface of the particulate matter (8), and then the molded film (9) made of a thermal iiJ plastic synthetic resin softened by heating is
It is adsorbed onto the lower surface of the frame (4) and the lower surface of the particulate matter (8). As a result, an upper mold (U) for molding the room temperature curable resin into a molded product can be obtained.

Incidentally, during the injection, the molding film (9) and the shielding film (10) at the upper end of the first model (3) are removed by fusing, and the fusing parts are joined together. Next, as shown in Fig. 3, the upper mold (
In the same manner as the molding of U), the lower frame body (24) and the molded film (2
9) and the particulate matter (28) surrounded by the shielding film (30) and solidified by the binder. )
are placed in a molded manner to define a product cavity (12) having an injection port (3) (see Figure 3).

A liquid room-temperature curable resin is injected into the product cavity (12) thus defined from the injection port (3) under atmospheric pressure or under pressure, and after the resin has hardened, a vacuum pump (not shown) is driven. When the upper frame body (4) and the lower frame body (24) are separated after stopping the suction action on the particulate matter (8) (28), the room temperature curing resin hardens and the surface Molding 1
1! a (9) The molded product to which (29) is attached can be taken out. Extra molded film (9) (
29) and by cutting and removing unnecessary parts such as the injection port part, it is possible to obtain a room temperature curable resin product with a colored or uneven pattern on the surface. Thereafter, the molded film (9) (29) is repeatedly adsorbed onto the particulate matter (8) (28) solidified by the binder to form an upper and lower mold (U) (
By molding D), a room temperature curable resin product can be manufactured.

If color or pattern is not required on the surface of the product, use an untreated molded film, peel the molded film from the molded product, and add molded film (9) (
29) Apply a mold release agent to the surface in advance. Further, in the above embodiment, the upper mold (U) is placed on the lower mold (D) to define the product cavity (12), and then the room temperature curing resin (11) is injected. As shown in Figures 4 and 5, after injecting a predetermined amount of room temperature curable resin (11) into the recess of the lower mold (D), the convex part of the second mold (U) is inserted into the lower mold (D). It is also possible to insert the two molds (U) and (D) into the four parts, and then mold the cold-setting resin into a predetermined shape. In this case, the injection port (13) is omitted. Room-temperature curable resin with high viscosity and high viscosity (
12) can also be used.

The molded films (9) (29) in the present invention are absolutely necessary to prevent the cold-curing resin (11) from being inserted into the particulate matter (8) (28).

As is clear from the above explanation, the present invention is capable of forming a mold by adsorbing a molding film onto the surface of particulate matter solidified into a 79i fixed shape with a binder, so that expensive metal molds and resin molds are required. It is possible to accurately mold a mold using an inexpensive wooden mold or plaster mold without using a mold, and by using a molded film that is colored or has an uneven pattern, it is possible to color or pattern the product. Second, the resulting product has excellent weather resistance, and by peeling off the molded film from the molded product at the end of the manufacturing process, it is easy to obtain a product with specularity and gloss. It has a powerful effect, such as being able to do something.

[Brief explanation of the drawing]

1 to 3 are longitudinal sectional views of main parts of an embodiment of the present invention,
3 and 4 are longitudinal sectional views of main parts of other embodiments. (8) Two particulate substances (9): Molded membrane (11): Room temperature curable resin (12): Product cavity (28): Particulate matter (29): Molded membrane 3
Figures, etc. 4 Figures 5 Figures Director General of the Patent Office 1. Indication of the case 1982 Patent Application No. 14.5946 2. Name of R Ming Process for manufacturing room-temperature curable resin products 3. Person making the amendment Related Patent applicant address (residence) 4-7-2 Meieki, Nakamura-ku, Nagoya, Aichi Prefecture
No. 3 Shinto Kogyo in the Toyota Building Name Shinto Kogyo Co., Ltd. 4 Date of amendment order 1 November 8, 1983 (Date of dispatch, November 2, 1983)
9th) 5. Object of amendment In the 10th line of the 10th page of the book, ``..., Figures 3 and 4 are the main J of other embodiments''.・・・
. . , FIGS. 4 and 5 are corrected from the main J of other embodiments.

Claims (1)

[Claims] 1. Molding two or more molds by adsorbing a flexible molding film to the surface of particulate matter solidified into a predetermined shape with a binder, and then molding these molds. In addition, the product cavity was formed by injecting a liquid room temperature curing resin into the product cavity, and after curing the room temperature curing resin, the adsorption state of the molded film to the surface of the particulate matter was determined. After unraveling and separating the molds from each other, the molded product of the room temperature curing resin to which the molded film is attached is taken out, and unnecessary portions are cut and removed from the molded product or the molded film is peeled off. Method for manufacturing curable resin products. 2 Molding two or more molds by adsorbing a flexible molding film on the surface of the particulate matter solidified into a predetermined shape by a binder, and molding one of the two or more molds. After injecting a predetermined amount of room temperature curable resin into the mold, the other mold is inserted and the room temperature curable resin is molded into a predetermined shape, and after the room temperature curable resin is cured, the surface of the particulate matter of the molded film is After releasing the adsorption state and separating the molds from each other, the molded product of the room temperature curing resin to which the molded film is attached is taken out, and unnecessary parts are cut and removed from the molded product.
I. A method for producing a room-temperature curable resin product, which comprises peeling off the formed film.