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Title: Apparatus for thermoforming thermoplastic sheet materials

Patent ·
OSTI ID:5526165

The present invention relates to an improved plug or tool for use in the production of shaped articles from thermoplastic sheet materials. An important feature of the present invention is that the tool or plug comprises a body portion which incorporates one or more inserts which possess a thermal conductivity different from the thermal conductivity of the body portion.

Assignee:
W R Grace Australia Limited (Australia)
Patent Number(s):
US 4500277
OSTI ID:
5526165
Resource Relation:
Patent Priority Date: Priority date 4 Jan 1983, Australia; Other Information: PAT-APPL-455618
Country of Publication:
United States
Language:
English