Manufacture of foam coated rod-like elements particularly for su

Details Manufacture of foam coated rod-like elements particularly for su Manufacture of foam coated rod-like elements particularly for su

1978-01-10

1980-08-19

Anderson, Philip

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Composite article making

47 47, 47 485, 249 91, 249 97, 264 469, 264157, 264273, 264275, 264277, B29D 2704, A01G 1704

Patent

active

042184150

ABSTRACT:
Method of manufacture of foam coated rod-like elements particularly for supporting pot-grown plants in general comprising the step of arranging a plurality of elongated tubular members of plastic material in spaced parallel relationship to each other into a tank and casting synthetic foam forming chemicals into the tank. The foam forming chemicals are caused to expand within the tank up to a level higher than the uppermost tubular member. The tubular members are thereby embedded into the foam. After hardening of the foam from the formed foam block foam coated rod-like elements are cut out each containing embedded therein one tubular member.

REFERENCES:
patent: Re27917 (1974-02-01), Jefferson et al.
patent: 125632 (1872-04-01), Truax
patent: 2720003 (1955-10-01), Harris et al.
patent: 2952462 (1960-09-01), Planin
patent: 3026652 (1962-03-01), Helmerson et al.
patent: 3188771 (1965-06-01), Ballai
patent: 3325881 (1967-06-01), Engelking
patent: 3334440 (1967-08-01), Choquette
patent: 3683960 (1972-08-01), Kirsch
patent: 3740024 (1973-06-01), Hellerich et al.
patent: 4117628 (1978-10-01), Smith
patent: 4143105 (1979-03-01), Hentschel et al.

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