2. Technology
  3. Molding
  4. rubber molding




rubber molding

・Using synthetic rubber compounding technology, we can develop rubber materials that meet customer needs.
・A wide range of rubber switches can be produced by combining conductive pills, gold contacts, conductive printing, etc.
・We have a wealth of experience in manufacturing rubber switches with click structures, and can respond from the design stage.

compression molding

Compression molding is a historical molding method in which rubber material is placed in a heated mold and poured into the mold under pressure to crosslink the rubber. The initial cost is often low because the mold structure is relatively simple, but as the molding method is based on the premise that a residue called burr will be produced, appropriate post-treatment is required.

We handle everything from design to manufacturing in-house for rubber molds.
We will propose the optimal configuration based on the product design, such as a general two-piece mold or a multiple-piece mold manufactured by inserting metal or resin.

merit Demerit
Initial cost may be relatively low Post-processing such as burrs is essential
Unlike resin injection molding, there are no passageways for materials such as runners, so materials can be used without waste. long cycle time
  Not suitable for products with complex shapes

rubber insert molding

Insert molding is a molding method in which resin, metal, or other parts that you want to integrate with rubber are inserted during molding to create an integral part. Depending on the material of the parts, appropriate pretreatment may be required to integrate them. We also develop unique technologies that leverage our experience and know-how in manufacturing various insert molded products. In recent years, we have succeeded in integrating silicone rubber and polypropylene resin, both of which are said to be difficult to bond.

Unique technology Silicone encapsulation of electronic components

This is a technology that integrally molds electronic components such as circuit boards and IC tags with silicone rubber.
The silicone material protects the inserted electronic components without degrading their performance. In addition to protecting the entire electronic component, it can also be molded to partially seal it.

Basic configuration

Product example



Original technology covered silicone

This technology achieves a soft feel, integrated structure, high durability, and freedom of design by molding a three-layer structure of reinforced plate + silicone thin film + decorative urethane sheet.

・Designs that cannot be made with paint are possible
・Can also be molded into 3D shapes
・High durability as the decorative surface is on the inside
・Can also follow the pattern of molded products

Basic configuration

Main environmental specifications
item Evaluation test Judgment criteria judgement
High temperature storage test Leave at 85℃ for 240 hours No change in appearance
(discoloration, pinholes, blisters)
Low temperature storage test -30℃×240 hours No change in appearance
(discoloration, pinholes, blisters)
temperature humidity cycle +65℃~-10℃ 93±3%RH
10 cycles 240 hours
No peeling of paint film or change in appearance
(discoloration, pinholes, blisters)
Humidity test 85℃90%RH 240 hours No peeling of paint film or change in appearance
(discoloration, pinholes, blisters)
hot water test Soaked in 40℃ hot water for 240 hours No peeling of paint film or change in appearance
(discoloration, pinholes, blisters)
Weather resistance test Xenon lamp irradiation for 240 hours Significant discoloration or fading of the paint film,
No crack marks
design example

Unique technology silicone tray for microwave baking

A typical silicone tray can be used for cooking at temperatures of around 100℃ in a microwave oven, but by combining special materials with the silicone rubber developed by our company, we have created a tray that can be heated to temperatures of over 200℃ in a microwave oven. Developed. Even if you don't have a microwave oven, you can use this tray to cook bread and dumplings in the microwave. Since we can control the amount of heat generated by mixing the materials, we can develop trays for a variety of uses.

Unique technology Silicone high slip treatment

By applying this technology to silicone molded products, the surface becomes more slippery, giving it a smooth and slippery feel.
This technology can be expected to prevent sticking to silicone transport jigs and prevent foreign matter from adhering to silicone products themselves.

Unique technology Conductive silicone ink

It has conductive silicone ink that has the same performance as the conductive pill contacts used in silicone rubber switches. Conductive pill contacts can only handle fixed shapes such as cylinders, but by printing our conductive ink, we can handle contacts with complex shapes.


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