吉山プラスチック工業 List of Products and Services

Bicolor molding refers to a molding method that creates a single product made from two colors or two types of resin. A dedicated machine equipped with two sets of injection devices is used for the molding process. The main applications of bicolor molded products include push buttons for calculators and computer key switches, as well as knobs for machinery, where letters, numbers, and symbols are incorporated. A representative example of the bicolor molding process involves forming the first color (one material) from the first cylinder, opening the mold once to attach the primary molded product to the core side, rotating the mold turntable 180 degrees to close the mold, forming the second color (two materials) from the second cylinder, opening the mold again, and then removing the molded product from the mold, resulting in the completion of the bicolor molded product.

• Outdoor furniture, play equipment, furniture hardware

This is a brick made by mixing approximately 55-60% wood cellulose material with 40-45% binder, thermoplastically processing the wood raw material, converting it into resin, and pelletizing it through injection molding. It can be produced using natural fibrous materials such as bark, wood sapwood, coffee beans, cocoa, and other similar materials, effectively utilizing organic resources and contributing to the protection of the natural environment through domestic production.

• Outdoor furniture, play equipment, furniture hardware