Plastic and nonmetallic article shaping or treating: processes – Pore forming in situ – By gas forming or expanding
Patent
1977-03-28
1979-03-06
Eickholt, E. H.
Plastic and nonmetallic article shaping or treating: processes
Pore forming in situ
By gas forming or expanding
264 53, 264 54, 47 44, 425378R, 428 18, B29D 2700
Patent
active
041431057
ABSTRACT:
The rot-resistant plant support which is aesthetically pleasing and can be inexpensively produced consists of a rod section and a plastics material which can be colored. The interior of the rod is finely porous while the surface zone has bark-like protuberances. The plant supports are manufactured by extrusion at processing temperatures in the tool adjusted to between 5 and 30.degree. C. above the temperatures conventionally employed for extruding foams with a smooth surface from the same thermoplasts.
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Gehring Joachim
Hardt Dietrich
Hentschel Claus
VON Bonin Wulf
Bayer Aktiengesellschaft
Eickholt E. H.
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