Plastic sheet or plate with flameproofing means

Details Plastic sheet or plate with flameproofing means Plastic sheet or plate with flameproofing means

1991-03-20

1993-07-27

Thibodeau, Paul J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Physical dimension specified

428 1, 428246, 4284735, 428524, 428704, 428920, 428921, B32B 516, B32B 2700, B32B 904, C09K 1900

Patent

active

052309550

ABSTRACT:
Thermoplastically re-formable plastic sheets with flameproofing means, characterized by a core layer 1-10 mm thick comprised of polyether sulfone or a similar thermoplastic, which core material has a content of at least 0.5 wt. %, preferably at least 2 wt. %, of a flame-protective additive, such as boron trioxide; and said sheet or plate further characterized by outer layers, firmly adhering to and covering the two faces of the core layer, at least 0.05 mm thick and comprised of a thermoplastic having a lower proportional content of the flame-protective additives than the core layer; are particularly useful for interior structures in passenger conveyances, such as airplanes.

REFERENCES:
patent: 4172179 (1979-10-01), Yost
patent: 4943473 (1990-07-01), Sahatjian et al.
patent: 4981895 (1991-01-01), Buchert et al.

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