The ways to protect the screw and barrel are:

Corrosive, abrasive, and high temperature resistant resins may unknowingly damage the screw and barrel. For example, some engineered materials, thermoplastic elastomers, and biopolymers sometimes form a corrosive environment. In addition, reinforcing materials (such as glass fiber, glass ball, etc.), some fillers and additives, are abrasive.

To avoid affecting production efficiency and product quality, processors must closely monitor the potential hazards these materials can cause. In order to maintain high processing standards, the establishment of a preventive maintenance program (hereinafter referred to as "PM" program) is necessary. When needed, the screw and barrel should be inspected and measured, and the screw pulled out for reinstallation or replacement because minimal wear and tear can affect product quality.

The best way to protect equipment from corrosive and abrasive resins is to choose the right material for the screw and barrel. To manufacture corrosive, abrasive, and high temperature resistant melts, abrasion-resistant cylinders and screws are manufactured at a cost that is about 3 to 4 times greater than that of a standard polyolefin screw. This is because wear-resistant alloys are expensive and difficult to machine. But they provide longer life and can be serviced longer.