Briefly introduction for contact low pressure molding process

 Briefly introduction for contact low pressure molding process

The contact low pressure molding process of the Metal Wall Panel Board Forming Machine is characterized by manual placement of reinforcing material, immersion resin, or simple tool assisted placement of reinforcing material and resin. Another characteristic of the contact low-pressure molding process is that no molding pressure (contact molding) is required during the molding process, or only low molding pressure (0.01 ~ 0.7mpa pressure is applied after the contact molding, and the maximum pressure is no more than 2.0mpa).

Contact low-pressure molding process, is the first material in the negative mold, Yang mold or on the mold made into a design shape, and then through heating or curing at room temperature, after demoulding and then through auxiliary processing and products. Belong to this type of molding process of hand paste molding, injection molding, bag molding, resin transfer molding, hot pot molding and hot expansion molding (low-pressure molding). The first two are contact forming.

In the contact low-pressure molding process, the hand paste molding process is the first invention in the production of polymer matrix composites and has the widest application range. Other methods are the development and improvement of the hand paste molding process. The biggest advantage of contact molding process is simple equipment, wide adaptability, less investment, quick effect. According to the statistics in recent years, the contact low-pressure molding process still accounts for a large proportion in the composite material industrial production of various countries in the world, such as 35% in the United States, 25% in Western Europe, 42% in Japan and 75% in China. This illustrates the importance and irreplaceability of the contact low pressure molding process in the composite material industry. But its biggest shortcoming is the production efficiency low, the labor intensity is big, the product repeatability is bad and so on.

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