Process and apparatus for the extrusion of coated skein-shaped p

Details Process and apparatus for the extrusion of coated skein-shaped p Process and apparatus for the extrusion of coated skein-shaped p

1973-09-24

1980-05-27

Rosenbaum, Mark

Plastic article or earthenware shaping or treating: apparatus

Means feeding fluent stock from plural sources to common...

Extrusion shaping means

425465, 425466, B29F 304

Patent

active

042048214

ABSTRACT:
A process for producing elongated profile members made of thermoplastic synthetic resins having a coating over at least a portion of their circumference of at least one additional thermoplastic polymeric material which includes the steps of extruding a coating of a thermoplastic secondary material, simultaneously and continuously with the extrusion of the elongated profile member, onto said member while said member is still within the plastic temperature range, and subsequently sizing the resultant coated member.

REFERENCES:
patent: 739881 (1903-04-01), Kilborn
patent: 1428381 (1922-09-01), Lower
patent: 2569373 (1951-09-01), Fay
patent: 3151356 (1964-10-01), Senecal
patent: 3191106 (1965-06-01), Baermann
patent: 3223761 (1965-12-01), Raley
patent: 3486195 (1969-12-01), Greenwood et al.
patent: 3486196 (1969-12-01), Klenk et al.
patent: 3528130 (1970-09-01), LeFevre et al.
patent: 3754847 (1973-08-01), Sawada et al.

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