British Plastics & Rubber, October 1st, 2002
TIGHT gauge tolerances and good film flatness are claimed for Windmoller & Holscher's latest Varex HDPE extrusion system for mono- and multi-layer products. Trim waste is avoided because tube width tolerances are at a minimum.
A high performance barrier screw permits low melt temperatures and produces a highly homogenous melt. Films of 9 microns or thinner show good dart drop test results.
The inner and outer bubble cooling systems are novel. An air pipe inside the bubble functions like a compensating valve and ensures maximum supply of cooling air independent of operating conditions. Flut...
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