JPS6127221A - Manufacture of foreign matter embedded molding - Google Patents

Abstract

PURPOSE:To enable simple and prompt embedding of a foreign matter and embedding of a foreign matter of complicated form by holding the foreign matter between two heated thermoplastic resin plates and compressing them by heated molds on both sides. CONSTITUTION:A foreign matter 2 is held between two heated plate thermoplastic resin members 1 and compressed by the heated molds 3, 4 on both sides. Two resin members 1 are welded by this compression to each other with the foreign matter 2 embedded between them and the shapes engraved on the push surfaces of the molds 3, 4 are transferred to the surfaces of the resin members 1 to finish a formed shape 5. As the forming condition for acrylic resin member 1, 140-180 deg.C is desired for the heating temperature of the resin member 1, 60- 110 deg.C is for the heating temperature of the molds 3, 4 and more than 30kg/cm<2> is for the forming pressure. In this manner, embedding can be made only by arranging embedding foreign matters 2 between two resin members 1. Therefore, the embedding is executed simply and promptly and even the foreign matters 2 of complicated form can be embedded simply.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a method for manufacturing a molded product encapsulating foreign matter, which is applied to shades of lighting equipment and other general molded products.

[Background technology]

Conventionally, bonding and pouring methods have been used as methods for manufacturing foreign-matter-encapsulated molded products that encapsulate cloth, paper, or the like.

However, both methods have disadvantages, such as being laborious and taking a long time to complete the molded product, and lack of precision in the shape of the molded product. Furthermore, in the bonding method, there is a risk that the molded product may be damaged during adhesion or that adhesive may be applied to unnecessary areas. Furthermore, when using the bonding method or the pouring method, it is difficult to line up a large number of foreign objects, such as beads, in a planar manner when encapsulating them.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide a method for producing a foreign matter-encapsulated molded product that can be easily and quickly encapsulated, and can also encapsulate foreign matter with a complicated shape.

[Disclosure of the invention]

The method for manufacturing a foreign-matter-encapsulated molded product of the present invention is a method in which a foreign material is sandwiched between two heated plate-shaped thermoplastic resin materials and pressed from both sides with heated molds.

Therefore, encapsulation molding can be easily performed by simply placing the foreign matter to be encapsulated between two resin materials.

Embodiment An embodiment of the present invention is shown in FIGS. 1 and 2. That is, the method for manufacturing this foreign-matter-encapsulated molded product is to sandwich the foreign material 2 between two heated plate-shaped thermoplastic resin materials 1 and press it from both sides with heated molds 3 and 4. Due to this pressing, the two resin materials 1 are fused together, the foreign matter 2 is encapsulated, and the shape carved on the pressing surface of the mold 3.4 is transferred to the surface of the resin material 1, and the molded product 5 is completed. In this example, a coin-shaped object is used as the foreign object 2. When the resin material 1 is acrylic, the molding conditions are such that the heating temperature of the resin material 1 is 140℃.
-180℃, heating temperature of molds 3 and 4 from 60 to 110℃,
It is desirable that the molding pressure be 30 kg/- or more.

In this manner, according to this method, encapsulation molding can be performed simply by placing the foreign matter 2 to be encapsulated between two resin materials 1. Therefore, encapsulation molding can be performed easily and in a short time, and even foreign matter 2 having a complicated shape can be easily encapsulated. Moreover, the mold shape can be transferred to the outer surface of the resin material 1 at the same time as the sealing.

FIG. 3 shows another embodiment. In this example, the foreign material 2' is made of very thin material such as cloth or paper.

The rest is the same as the first embodiment.

FIG. 5 shows yet another embodiment. In this example, a large number of fine foreign substances 2# such as beads are arranged in a plane and sealed. Even in this example, the heated resin material 1 is placed in the lower mold 4.
If you place 2# foreign objects such as beads on top of it, it will naturally become flat. Place another piece of resin material on top of it,
When pressed, it can be easily encapsulated. In this way, even in the case of bead-shaped foreign substances 2#, they can be easily arranged and enclosed in a plane.

〔Effect of the invention〕

The method for manufacturing a foreign matter-encapsulated molded product of the present invention has the advantage that it can be easily and quickly encapsulated, and even foreign matter with a complicated shape can be easily encapsulated.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of the manufacturing process of one embodiment of this invention;
3 is a sectional view of the manufacturing process of another embodiment, FIG. 4 is a sectional view of the molded product, FIG. 5 is a sectional view of yet another embodiment, and FIG. The figure is a cross-sectional view of the molded product. l...Thermoplastic resin material, 2.2', 2''...Foreign matter,
3.4...Mold Figure 1 Figure 3 Figure 5 Shade 6 Figure

Claims (1)

[Claims] A process of sandwiching a foreign object between two heated plate-shaped thermoplastic resin materials, and a process of pressing the two sandwiched thermoplastic resin materials from both sides with a heated mold to fuse them together. A method for manufacturing a molded product encapsulating foreign matter.