[Manufacturing Example] Asthma Treatment Inhaler
Introducing a case of mass production of an asthma treatment inhaler using two-color molding with a special hook and hinge structure!
We received an inquiry from a major Taiwanese medical device brand manufacturer regarding the development and mass production of a spray-type inhaler for asthma patients. The cap components require high waterproof performance (IP58) and durability, with the main challenges being ease of use and reliability ensured by a unique hook and hinge mechanism. Strict requirements were also imposed on the speed of mass production startup and cost competitiveness. The annual production quantity is between 30,000 and 50,000 units, with a defect rate target of 1 in 5,000. The mold manufacturing period is 45 to 60 days, and the mass production period is 1.5 years. 【Technical Challenges】 ■ Ensuring waterproof performance: Achieving IP58 level waterproof performance for the cap components while maintaining mass production stability. ■ Complex structure molding: Accurately reproducing the special hook and hinge design through two-color molding (TPU on PC) and minimizing the assembly process. ■ Balancing quality and cost: Maintaining a high defect rate target (1 in 5,000) while ensuring cost competitiveness. ■ Speed of mass production startup: Rapid transition to mass production in line with the brand manufacturer's market launch schedule (mold manufacturing takes 45 to 60 days). *For more details, please download the PDF or feel free to contact us.
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【Applicable Technologies and Materials】 ■ Molding Technology: Two-color molding (double injection) — TPU over PC substrate (cap components) ■ Design Technology: Mold design with special hook and hinge structure; integrated molding ■ Analysis Technology: Optimization of filling behavior through 3D mold flow analysis ■ Quality Assurance: Full inspection at IP58 level using waterproof inspection jigs ■ Material Standards: Materials suitable for medical device applications (equivalent to ISO 10993) ■ Electronic Components: Spray nozzle mechanism; aerosol spray control structure *For more details, please download the PDF or feel free to contact us.
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YOMURA JAPAN Office (Opereted by Minnano Modeling Service) YOMURA JAPAN Office
YOMURA JAPAN is the Japanese sales office of YOMURA Technologies, a Taiwanese precision molding manufacturer with 36 years of history, over 300 employees, and certifications including ISO 13485, US FDA 510(K), GMP, and AS9100D. Operating five factories in Linkou, Taiwan, the company provides precision manufacturing for medical devices and healthcare products in a Class 100,000 cleanroom-certified environment. From our Japan office, we support the entire manufacturing journey — from product development using advanced 3D printing technologies (silicone, biocompatible resin, flexible TPU, and micro SLA) to full-scale production at our certified factories utilizing micro molding, two-shot molding, LIM/LSR molding, IMD, IME, and contract assembly. We also offer consulting services on material selection and medical device certification, as well as support for expanding into overseas markets. Through our "prototype in Japan, mass-produce in Taiwan" model, we deliver both quality and efficiency. From early-stage technical challenges to certification and production, please feel free to contact us.
