YOMURA JAPAN Office (Opereted by Minnano Modeling Service) Product Lineup

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.

• Other medical supplies and cosmetic manufacturing materials

We received an inquiry from a medical device distributor in the United States regarding the development and mass production of a valve device that controls the flow of liquids, etc., with ON/OFF functionality. This product requires intuitive operation with one hand and IP58 waterproof performance to withstand use in medical environments. Additionally, achieving full compliance with FDA regulations while optimizing costs is a critical challenge. The annual production quantity is between 30,000 and 50,000 units, with a defect rate of 1 in 10,000. The mold production period is 35 to 45 days, and the mass production period is 2 years. 【Technical Challenges】 ■ Ensuring waterproof performance: Achieving stable IP58-level waterproof performance in mass production while maintaining precise fitting tolerances for slider components. ■ Compliance with FDA regulations: Establishing material selection, process management, and documentation systems in accordance with U.S. FDA regulations, and passing regulatory authority reviews. ■ Precision tolerance matching: Designing precise tolerances considering the thermal expansion differences between materials in two-color molding and stabilizing mass production. ■ Cost optimization: Achieving competitive cost targets while maintaining high-quality standards (defect rate of 1 in 10,000). *For more details, please download the PDF or feel free to contact us.

• valve

This is a case where we received a request from a major medical device manufacturer for the development and manufacturing of a wearable device for patient monitoring. This product required advanced "functionality" by incorporating multiple sensors, an LCD, and a PCB into a compact housing, in addition to "flexibility" and "biocompatibility" that allows patients to wear it comfortably for extended periods. For the housing material, we selected LSR (Liquid Silicone Rubber), which has excellent biocompatibility and flexibility. We adopted IME technology to place electronic components within the mold and perform integrated molding with LSR, achieving high waterproof and dustproof performance. 【Case Overview】 ■ Annual Production Quantity: 10,000 units ■ Quality Target (Yield): 99.3% ■ Mold Production Period: 2 months ■ Mass Production Startup: 1 months *For more details, please download the PDF or feel free to contact us.

• others
• Inspection fixture

We would like to introduce the "IMD/IME" that we handle. It is a technology that places printed films and electronic circuits within a mold and integrates them with resin. IMD achieves the integration of decorative and display panels, while IME realizes the integration of electronic circuits and sensors. It is also compatible with film molding, transfer molding, and in-mold labeling (IML). 【Features】 ■ Reduction of post-processing (painting, printing, assembly) ■ Improved surface durability and chemical resistance ■ Seamless appearance design ■ Enhanced cleanability (no unevenness) *For more details, please download the PDF or feel free to contact us.

• Inspection fixture
• others

We would like to introduce our "Overmolding" service. This is a technology that coats and molds soft materials such as TPE (thermoplastic elastomer) or silicone onto the surface of hard plastic parts. It achieves IP68 waterproofing and soft-touch processing. We support integrated molding using a two-color molding machine, as well as overmolding in subsequent processes. 【Features】 ■ Improved grip ■ Shock absorption ■ Waterproof sealing ■ Integrated molding using a two-color molding machine ■ Support for overmolding in subsequent processes *For more details, please download the PDF or feel free to contact us.

• Inspection fixture
• others

We would like to introduce our "LIM/LSR molding" that we handle. It is an injection molding technology using liquid silicone rubber (LSR). Two-component silicone materials are precisely measured and mixed, and then cured within a heated mold. Medical-grade silicone has excellent biocompatibility, making it suitable for body-contact components and long-term use products. Materials compliant with USP Class VI/ISO 10993 biocompatibility testing are available. 【Features】 ■ Biocompatibility ■ Heat resistance (-50 to 200°C) ■ Chemical resistance ■ Flexibility and elasticity ■ Transparency *For more details, please download the PDF or feel free to contact us.

• others

We would like to introduce our "Insert Molding" technology. This is a technique where metal parts, electronic components, and other materials are set inside a mold and integrally molded with plastic. It enables the manufacturing of composite parts that combine the strength and conductivity of metal with the moldability and insulation properties of plastic. The materials that can be inserted include metal terminals, screws, nuts, electronic circuit boards, sensors, and more, accommodating complex processes. 【Features】 ■ Reduction in the number of parts and omission of assembly processes ■ Strong integration of metal and plastic ■ Improved reliability of electrical contacts ■ Contribution to miniaturization and weight reduction *For more details, please download the PDF or feel free to contact us.

• switch
• switch
• Other electronic parts

We would like to introduce the "two-color molding" that we handle. This is a technology that allows for the integrated molding of two types of materials or colors in a single molding cycle. By combining resins with different hardness, colors, and materials, it is possible to manufacture composite parts that previously required assembly as a single unit. It achieves a strong integration of different materials and is also compatible with the integrated molding of grip and seal parts. 【Features】 ■ Cost reduction by reducing assembly processes ■ No adhesives required, ensuring biocompatibility ■ Strong integration of different materials ■ Integrated molding of grip and seal parts is possible *For more details, please download the PDF or feel free to contact us.

• Other analytical and testing equipment

We would like to introduce our "Micro Molding" services. This is an injection molding technology for ultra-small and ultra-precise components, catering to the miniaturization and high functionality of medical devices. With high-precision mold technology and dedicated micro molding machines, we can achieve stable quality and mass production. We have realized the mass production of fine components that were difficult with conventional molding techniques. We own two micro molding machines (30T to 40T). 【Features】 ■ Supports the miniaturization and high functionality of medical devices ■ Utilizes high-precision mold technology and dedicated micro molding machines ■ Capable of mass production with stable quality *For more details, please download the PDF or feel free to contact us.

• Injection Molding Machine