Process for twin-sheet forming high heat distortion temperature

Details Process for twin-sheet forming high heat distortion temperature Process for twin-sheet forming high heat distortion temperature

1990-02-09

1992-05-19

Cashion, Jr., Merrell C.

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

428195, 428200, 428412, 4284735, 156287, 156311, 156313, 156322, 264166, 264173, 264251, 264545, B29D 2200

Patent

active

051147670

ABSTRACT:
A method for twin sheet forming layers high heat distortion temperature thermoplastic materials. The process employs a low heat distortion temperature thermoplastic material layer disposed between the layers of high heat distortion temperature material layer to permit adhesion therebetween at moderate temperatures to reduce thermal degradation. The structures made therefrom are useful as aircraft ducting.

REFERENCES:
patent: 3462330 (1969-08-01), Greig et al.
patent: 3971687 (1976-07-01), Greer et al.
patent: 4428306 (1984-01-01), Dresen et al.
patent: 4608104 (1986-08-01), Holtrop et al.
patent: 4695501 (1987-09-01), Robinson et al.
patent: 4737414 (1988-04-01), Hirt, Jr. et al.
patent: 4908251 (1990-03-01), Iimura et al.

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