Deckle technology

摘要

The invention provides a deckle system for extrusion dies. In certain embodiments, the invention provides methods of cleaning an extrusion die equipped with a retractable external deckle system. Also provided in some embodiments is a deckle system having a novel deckle adjustment mechanism. In other embodiments, the invention provides an advantageous internal deckle member equipped with a removable, replaceable internally threaded insert.

主权项

1. An extrusion die having a deckle system with an external deckle, a manifold, a preland channel, a final land channel, and an orifice, said external deckle having a blade that projects from outside of said orifice, through said orifice, and into said final land channel, said blade having an upstream edge that terminates in said final land channel such that said blade does not extend into said preland channel.