THE EXTRUSION OF CELLULAR POLYETHYLENE INSULATION,
Abstract
The effects of certain extrusion variables on the diameter and capacitance uniformity of cellular insulation were studied using a multi-channel oscillograph. Operational parameters such as melt temperature and head pressure uniformity were varied to produce a poor and optimum extrusion quality level for each of six diverse screw designs. Screw design variables studied were helix angle and channel depth. Some common, but not easily detected problems, such as poor melt temperature uniformity, flow surging, and pre-foaming in the screw are described. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1967
- Accession Number
- AD0660094
Entities
People
- C. L. Loney
- G. W. Daues
- R. H. Reinhard
Organizations
- Monsanto