Foamed polymer tubing

Details Foamed polymer tubing Foamed polymer tubing

1983-06-24

1987-12-15

Kittle, John E.

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

138151, 138155, 138156, 138170, 138DIG1, 285 47, 428 43, B32B 3100

Patent

active

047132710

ABSTRACT:
Process and apparatus are disclosed for manufacturing foamed articles such as tubes used as pipe insulation, which tubes are of a high impermeability and flexibility and are formed of a polymer, such as polyethylene or polypropylene, containing up to as much as 50% of an elastomer.

REFERENCES:
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patent: 2717848 (1955-09-01), Jaye
patent: 2730385 (1956-01-01), Kuehne, Jr.
patent: 3374298 (1968-03-01), Studer
patent: 3765705 (1973-10-01), Tantam
patent: 3870346 (1975-03-01), Kappeler et al.
patent: 4020025 (1977-04-01), Zeitler et al.
patent: 4022205 (1977-05-01), Tenczar
patent: 4054158 (1977-10-01), Hoeman et al.
patent: 4109944 (1978-08-01), Curtin
patent: 4179320 (1979-12-01), Midgley et al.
patent: 4243453 (1981-01-01), McClintock
patent: 4298706 (1981-11-01), Ueno et al.
patent: 4352892 (1982-10-01), Lohmar
"G-B Ultrafine Pipe Insulation", Advertising Bulletin of Gustin-Bacon Manufacturing Co., Apr. 1953.

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