大和合成 Product Lineup

Yamato Gosei Co., Ltd. handles everything from resin selection, mold design, manufacturing, prototyping, to mass production processing, and offers the development of customized materials and proposals for product shapes. Additionally, we provide precision processing using rare thermosetting resins, as well as gas venting technology within molds and composite molding technology with metals. Furthermore, we are engaged in the development of high-strength, high-heat-resistant resin molded products that are closer to metals by incorporating long fibers into thermosetting resins. [Uniqueness and Technical Standards] - Comprehensive engineering services for product development - Thermosetting molding technology - Weight reduction of automotive components through metal composite - Quality control within the molding process - Promotion of automation and labor-saving measures *For more details, please download the PDF or feel free to contact us.

We are jointly developing and using materials with improved friction coefficients and materials tailored for clutch components in collaboration with material manufacturers. We can ensure high roundness. There are also friction sliding materials that are insert molded. Due to the need for high strength, nylon (with 50% glass) is also used. 【Specifications】 ○ Material: Resin ○ Lot: 1 to no upper limit ○ Precision: 0.1mm to 1/100mm For more details, please contact us or download the catalog.

It is used for pipes that supply air to the engine and for auxiliary equipment. The core extraction structure follows the angle of the R80 and is performed using a mold mechanism. There are three insert fittings. After molding, an annealing process is carried out to improve dimensional stability. In addition, we can also produce motorcycle meter parts, muffler parts, cover parts, emblems, etc., so please feel free to consult with us. 【Specifications】 ○ Material: Resin ○ Lot: --- ○ Precision: Below 1/1000mm For more details, please contact us or download the catalog.

These are electrical and electronic components such as proximity switches (sensors) and trimmer capacitors that support the computer society. They are also compatible with metal inserts and thin-walled molding. 【Specifications】 ○ Material: Resin ○ Lot: --- ○ Precision: --- For more details, please contact us or download the catalog.

We produce various sizes of breaker components in Japan and Vietnam. We manufacture various parts such as the exterior of the breaker, internal electrical insulation components, and sliding parts like switches. Production is done through injection molding and compression molding. 【Specifications】 ○ Material: Super engineering plastic ○ Lot: 1 to no upper limit ○ Precision: 0.1mm to 1/100mm For more details, please contact us or download the catalog.

This is a resin pulley with a proven track record as an automotive part. A pulley is a component that engages with the belt transmitting the engine's rotation. It is used for adjusting the position and tension of the belt. By using thermosetting resin, we have improved heat resistance and oil resistance. By serving as a substitute for traditional metal pulleys, it significantly contributes to weight reduction. Additionally, compared to metal pulleys, it features less vibration during operation and reduced noise. For pulleys with complex shapes, such as those with grooves, there is a cost reduction effect. 【Specifications】 ○ Material: Engineering plastic ○ Lot: 1 to no upper limit ○ Precision: 0.1mm to 1/100mm For more details, please contact us or download the catalog.

Transfer molding is a method that differs from direct pressure molding, where materials are directly introduced during the opening and closing of the mold. Instead, in transfer molding, softened materials are introduced through an inlet called a pot while the mold is closed, and are filled and cured using a pushing device (plunger). This method is used when the shape of the product or the type of insert makes it difficult to mold using compression molding, or when precision and strict dimensional accuracy are required. The curing time can also be shortened compared to compression molding.

In the case of thermosetting resin parts, burrs are inevitably generated after molding, so burr removal is necessary. It is also possible to remove only the burrs by projecting special beads onto the resin parts with attached burrs using a fully automatic burr processing machine called a deflasher (blast). There are different types of deflashers, such as apron type, drum type, and conveyor type, and the method of burr processing varies depending on the product.

For companies troubled by the closure or withdrawal of their molding partners, Daiwa Gosei will take over the transfer of thermosetting molding molds.

In the automotive industry, reducing weight of components is a crucial issue for improving fuel efficiency and reducing CO2 emissions. Thermosetting resin molding contributes to weight reduction as it is lighter than metal parts while achieving high strength and durability. Daiwa Gosei will accept the transfer of molds for thermosetting molding for companies facing difficulties due to the closure or withdrawal of molding destinations. 【Application Scenarios】 - Lightweight automotive parts - Engine compartment internal parts - Interior parts 【Benefits of Implementation】 - Improved fuel efficiency - Reduced CO2 emissions - Enhanced durability of parts