What is Screen Pack For Plastic Processing?

What is Screen Pack Meaning,belowing for your check.

• Screen Pack is usually a multilayered, nearly symmetrical sandwich of metallic wire screens.
•  It is placed between the screw and the breaker plate, using the latter for physical support. It's role is to eliminate the particulate contaminants.
• The screen pack composition is always based on trade-offs, there is need to eliminate particulates using screens with high mesh, but at the same time this create flow restriction, it reduced the throughput, thus low mesh would be preferred.
• Decision should be made as for as the maximum tolerable size of the particulate contaminants.