Versatility of Grooved Feed Extrusion, 1990 Polymers, Laminations & Coatings Conference Proceedings
The use of grooved feed extrusion for both blown film and flat sheet has been increasing in recent years, but not at rate commensurate with the benefits achieved with its use. It has been and will continue to be the preferred method for extruding HMW high density polyethylene and certain polypropylenes. The benefits with these materials are many: a lower and controlled melt temperature, increased extrusion rate which remains nearly insensitive to head pressure and lower residence times. Why then are other materials, which exhibit similar processing characteristics, slow to gain acceptance as processable on grooved feed extruders? The answer is that many processors lack sufficient knowledge of just how versatile grooved feed extrusion is. The intent of this paper is to present a brief history and description of grooved feed extrusion and discuss some extrusion data that supports the claim of grooved feed as a versatile extrusion process.
Versatility of Grooved Feed Extrusion, 1990 Polymers, Laminations & Coatings Conference Proceedings
