Why choose vacuum forming for injection molding?

Release time:2025-06-09 16:42:44

Injection molding and vacuum forming are two different concepts, which need to be analyzed and compared from the perspective of the intended use and product structure before selecting the production process. Generally speaking, vacuum forming can be used to shape large-sized thin-walled products and allow the products to have side indentations.

The main advantage of vacuum forming is that the equipment and mold costs are low, making it a relatively economical forming and processing method. However, due to limitations in the plastic properties of plastic sheets and the low molding pressure (only one atmosphere), vacuum forming is not suitable for molding plastic products with complex structural shapes (such as non equal thickness products, embedded products, etc.) and plastic products with large wall thicknesses.

The choice of process depends on the characteristics of the product. The cost of injection molding is three times that of vacuum forming, and the order quantity for a single product needs to meet a high standard before production, but the price per piece is relatively cheap. Injection molded products have immutability, while vacuum formed products have greater adjustability and can be customized for customers regardless of quantity.