Plastic article or earthenware shaping or treating: apparatus – Diverse distinct type shaping means – Shaping orifice and either a downstream preform reshaping...
Patent
1974-09-10
1976-12-28
Husar, Francis S.
Plastic article or earthenware shaping or treating: apparatus
Diverse distinct type shaping means
Shaping orifice and either a downstream preform reshaping...
425371, 425392, B29D 2304
Patent
active
039999254
ABSTRACT:
A device for manufacturing profiled hollow tubing comprising an extruder and two endless rows of die halves guided over guiding wheels provided with first recesses having one depth and second recesses which are shallower, such that subsequent moulds halves contact each other before coming into contact with the plastics tube as extruded.
REFERENCES:
patent: 1963314 (1934-06-01), Savell et al.
patent: 3751541 (1973-08-01), Hegler
Husar Francis S.
Jaskiewicz Edmund M.
Rosenbaum Mark
Wavin B.V.
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