Method for the continuous manufacture of foamed hollow profiles

Details Method for the continuous manufacture of foamed hollow profiles Method for the continuous manufacture of foamed hollow profiles

1976-11-15

1978-08-15

Hoag, Willard E.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

By gas forming or expanding

264159, 264214, 264209, 264334, B29C 510, B29D 2300, B29D 2704

Patent

active

041072480

ABSTRACT:
The invention relates to a method for the continuous manufacture of longitudinally slit foam pipes using an internal core and two outer mould portions, externally and spacedly surrounding the core, whereby the two outer mould portions are displaced in movement-conforming manner along a path with the formation of a continuous, annular channel open towards a core support and whereby further a sheet is curved in tubular or U-shaped manner, and just before entering the annular channel is supplied with a foam base material which is completely foamed in the annular channel, whereby the foamed hollow profile is formed.

REFERENCES:
patent: 3561048 (1971-02-01), Ernst
patent: 3566448 (1971-03-01), Ernst
patent: 3585678 (1971-06-01), Neumann et al.

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