Plastic and nonmetallic article shaping or treating: processes – Pore forming in situ – Composite article making
Patent
1974-08-14
1977-09-06
Anderson, Philip
Plastic and nonmetallic article shaping or treating: processes
Pore forming in situ
Composite article making
260 25P, 264 53, 264 55, 264211, 264DIG5, 264DIG13, 264DIG17, B29D 2700
Patent
active
040468461
ABSTRACT:
A hard foamed material having a small specific gravity and a high mechanical strength is produced by mixing vinyl chloride resin with a large amount of inorganic powdery substances and a solvent, heating and kneading the resulting mixture in a closed kneader at a given temperature, adding a liquefied butane with a solvent thereto, and heating and foaming the resulting mixture in a mold.
REFERENCES:
patent: 2498074 (1950-02-01), Feldman
patent: 2525880 (1950-10-01), Feldman
patent: 2525965 (1950-10-01), Smith
patent: 2692863 (1954-10-01), Iler
patent: 3306960 (1967-02-01), Weissman et al.
patent: 3773873 (1973-11-01), Spaak et al.
patent: 3812224 (1974-05-01), Smith et al.
patent: 3812225 (1974-05-01), Hosoda et al.
patent: 3846523 (1974-11-01), Geerdes
patent: 3911070 (1975-10-01), Lundsager
patent: 3912667 (1975-10-01), Spitzer et al.
"SPI-Plastics Engineering Handbook" Third edition, New York, Reinhold, c 1960, pp. 226, 227, 239-250.
Penn, W. S. "PVC Technology," Third edition revised and edited by W. V. Titow and B. J. Lanham, New York, Wiley-Interscience, [1971] pp. 393, 411-416, 486-491, 497.
Anderson Philip
Nilles James E.
LandOfFree
Method of producing hard foamed materials does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of producing hard foamed materials, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of producing hard foamed materials will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2162972