Method for forming expanded panels from thermoformable material

Details Method for forming expanded panels from thermoformable material Method for forming expanded panels from thermoformable material

1977-01-27

1978-09-12

Anderson, Philip

Stock material or miscellaneous articles

Structurally defined web or sheet

Honeycomb-like

100295, 100DIG18, 264164, 264275, 425445, B29C 1702, B32B 312

Patent

active

041139097

ABSTRACT:
In order to make large panels of expanded thermoformable material in a process in which a blank of the material is placed between two heated mold plates, the blank adhered to the plates by hot tack adhesion; the plates separated and the expanded material cooled, while maintaining commercial tolerances, the mold plates are supported on elongated mounting studs.

REFERENCES:
patent: 2502304 (1950-03-01), Baker
patent: 2820250 (1958-01-01), Stratton
patent: 3109476 (1963-11-01), Giordano
patent: 3134350 (1964-05-01), Danly et al.
patent: 3249041 (1966-05-01), Johnson
patent: 3463080 (1966-08-01), Rodriguez et al.
patent: 3524785 (1970-08-01), Feiglin
patent: 3919378 (1975-11-01), Smarook
patent: 3919380 (1975-11-01), Smarook et al.
patent: 3919445 (1975-11-01), Smarook
Swindells, James F. "Calibration of Liquid-in-Glass Thermometers," U.S. Dept. Commerce, National Bureau of Standards monograph 90, issued Feb. 12, 1965, pp. 6 and 7.

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