Compared with the current development status of rubber injection molding abroad, domestic rubber injection technology is still in its infancy. Although injection machines can already be used to produce products, there is insufficient research on related processes. A typical example is that in the production process, most of them do not set pressure retention, but only fill the mold cavity through injection pressure, which leads to the occurrence of "big cakes" in the flow channel and flash on the product.
The development of rubber injection vulcanization molding machines relies on the tripartite cooperation of equipment factories, mold suppliers, and product factories, jointly promoting the application and development of injection molding. But currently in China, these three links are basically independent and lack integration.
From the perspective of injection molding machines themselves, the current domestic market capacity is about 450 million yuan, with an annual growth rate of approximately 30-40%. At present, there are over 20 rubber injection machine "brands" of all sizes in the Chinese market, most of which have evolved from the initial Taiwan or mainland machines. Usually, injection machine manufacturers find an investor, copy a company's drawings, or make small changes based on this for manufacturing and production. They compete in the market at low prices or rely on personal relationships with equipment procurement personnel, lacking innovation and research and development capabilities. This leads to insufficient technological innovation in equipment, let alone research on rubber injection processes.