Since its founding in 1966, Yamazen Mold has grown as a specialized manufacturer of plastic injection molding molds and die-casting molds. Today, it also handles molds for resin cases in the capacitor components of hybrid vehicles. Furthermore, to avoid stopping customers' production lines for mold performance verification, the company has introduced prototype injection molding machines, creating a system that allows for integrated production from mold manufacturing to prototype molding and inspection. Following the Lehman Shock, it established a local subsidiary, Hu Shan, in Shanghai, China. By building a local network, it can handle cost-competitive products that cannot be handled domestically in Japan. In September 2016, in response to business expansion, it added a second factory, which is now its main production facility.

Even with advancements in design systems and machine tool performance, molds requiring precision down to tens of micrometers still ultimately require manual adjustment. In such situations, the skills of veteran technicians are indispensable. Furthermore, even with the same plastic material, rapid technological advancements constantly add new properties such as weather resistance, and the company handles many molds for product development using these new materials. Therefore, the accumulation of information on new materials and processing techniques, in addition to past knowledge, is a key differentiator.

The company uses a 3D measuring machine to create drawings for old molds that don't have existing blueprints, enabling maintenance. Employees range widely in age from their 20s to their 70s (including contract workers), with a fairly even distribution across generations. While intergenerational skill transfer is a challenge, veteran technicians pass on their knowledge to younger employees through their work as they complete finishing tasks. Individual employees aren't just focused on their daily tasks; they involve younger employees in developing solutions to new challenges and demands from customers. In this way, the company naturally passes on the wisdom of veterans while encouraging younger employees to think for themselves and find solutions, thus ensuring the continuation of technical skills.

President's Greeting

To verify the performance of a mold, we can handle everything from mold manufacturing to prototype molding inspection using our own prototype injection molding machine, without requiring any disruption to the customer's production line.
As a specialized manufacturer of plastic injection molding dies, we intend to further enhance our ability to disseminate information and adapt to the changing times.