Information on two-color molding
Integrated molding of different resins and colors. Cost reduction without adhesive or assembly | Contract processing for two-color molding.
Yamato Gosei Co., Ltd. manufactures integrated molded products made of different resins and colors through two-color molding on a contract basis. By molding two types of resins in the same process, there is no need for adhesion, assembly, or secondary processing. This reduces the number of parts and achieves high-quality exterior components without assembly misalignment or steps. We have a proven track record in mass production for medical device housings (top cases for blood glucose meters / AS resin × ABS resin) with strict quality requirements, and we possess the know-how to finish two materials with different designs and textures into one component with high precision at the boundary. Molding is carried out at our factory in Vietnam (Ho Chi Minh City) using the Sumitomo Heavy Industries SE230HS-CI (clamping force 230t), operating 24 hours a day in three shifts. We handle everything from gate cutting to tray packing in-house, allowing us to ship in a ready-to-deliver state, thereby achieving stable supply for mass production and total cost reduction simultaneously. Customers who wish to "eliminate the assembly process" or "reduce costs with integrated parts of different materials" are invited to send us drawings or sample parts. We will promptly respond with feasibility and estimated costs.
basic information
Molding method: Integrated molding of different resins and colors using two-color molding Molding machine: Sumitomo Heavy Industries SE230HS-CI (clamping force 230t) Molding location: Yamato Gosei Vietnam Factory (Ho Chi Minh City)
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Applications/Examples of results
【Mass Production Achievements】Blood Glucose Meter Top Case (Medical Device) The outer cover part (AS resin) and the operation ring part (ABS resin) are integrally molded in the same process. This eliminates the need for assembly in the subsequent process and achieves two components with different design and texture as a single part with high precision boundaries. 【For Such Applications and Challenges】 - Want to reduce costs by eliminating assembly and bonding processes for housings and covers - Want to express different textures (glossy × textured, hard × soft design) in a single part - Want to eliminate appearance defects caused by misalignment, steps, and gaps between two parts - Seeking to ensure cost competitiveness through overseas production while maintaining a management system of Japanese quality
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