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New Scheme of Multi-color Injection - Application Trend of Large Bicolor (Bi-Material) Injection for Automotive Parts 【I】

The second industrial revolution brought about great innovations in the fields of chemistry, electrical appliances, oil production, and steel industry, and also led to epoch-making inventions such as automobiles and airplanes. However, these industries, which are closely related to people's livelihood and feature a wide range of applications, also give rise to a great deal of environmental protection issues.

Application of auto parts in composite injection molding:

Oil will eventually run out, and cars that burn oil will bear the brunt. In addition to saving fuel or environmental protection, we need clean and energy-saving vehicles with excellent performance, eye-catching appearance in the future:

1. The traditional internal combustion engine will inevitably be replaced by new energy sources. The product of the transition period is petrol-electric hybrid vehicles. Any breakthroughs in the fuel cell or other new energy-related technologies will usher in the era of new energy vehicles.

2. The application of light materials is important. To avoid consuming excessive and unnecessary power, vehicles will be fully lightweight in the future. In this aspect, three materials will be widely used: plastic, light metal (aluminum alloy) and carbon fiber.

 
Photo:The application of carbon fiber and FCS injection machine HB-350R

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3. Light materials are expensive. To reduce costs, it is necessary to think about sharing, modularization and simplification, so that parts can be used in different models and be easily replaced, or several components or programs can be simplified into one component or one program (integration).

4. Great attention is paid to the recycling rate of materials. While ensuring high recycling rate, the recycling cost should be reduced. In this regard, the most flexible method is to use plastic. The melting temperature for recovery of ordinary plastics ranges from 230 to 250°C, and reaches 400°C for some engineering plastics (e.g. PEEK). Even so, it is still far lower than 600-800°C for aluminum alloy, 800-1,000°C for glass, and 1,200-1,500°C for steel. Besides, the plastic recovery process is relatively simple.

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In other words, the proportion of “plastic” used in auto parts will be higher and higher......

The sequel of the new multi-color injection scheme: the application trend of large-scale two-color (double-material) injection from auto parts 【II】

 
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