Method of thermoforming using a syntactic foam plug

Details Method of thermoforming using a syntactic foam plug Method of thermoforming using a syntactic foam plug

2006-03-29

2011-12-13

Lee, Edmund H. (Department: 1744)

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Starting material is nonhollow planar finite length preform...

C264S550000

Reexamination Certificate

active

08075835

ABSTRACT:
The present invention provides an improved syntactic foam plug for plug assist thermoforming wherein such plug is composed of a thermoplastic material having a relatively high melting and/or glass transition temperature. Accordingly, the subject invention encompasses diminishing or removing the undesirable characteristics of thermoset syntactic plugs while increasing the ease by which these articles may be constructed for a given use, by forming such plugs from syntactic foams containing thermoplastics.

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International Search Report for PCT/NL00/00536, Nov. 2000.

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