Plastic and nonmetallic article shaping or treating: processes – Direct application of fluid pressure differential to... – Production of continuous or running length
Patent
1979-07-02
1982-03-02
Michl, Paul R.
Plastic and nonmetallic article shaping or treating: processes
Direct application of fluid pressure differential to...
Production of continuous or running length
264557, 264558, 264562, 264561, 425 71, B29D 720
Patent
active
043177948
ABSTRACT:
Disclosed is a process for the continuous manufacture of fiber-reinforced tubing based on cellulose hydrate, comprising the steps of impregnating and coating fibrous tubing with an aqueous akaline viscose solution; moving the viscose-treated tubing at a steady speed vertically in a straight line along its longitudinal axis; applying a viscose-regenerating fluid along at least one circular circumferential line to at least the outside of the viscose-treated fibrous tubing; immediately after the application step, passing the tubing with the film of regenerating fluid on its surface through at least one first air section, whereby there is produced a fiber-reinforced tubing based on cellulose hydrate; treating the cellulose hydrate tubing with an aqueous fluid containing a dissolved chemical plasticizer; and drying the plasticized tubing. Also disclosed is an apparatus for carrying out this process.
REFERENCES:
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patent: 2070247 (1937-02-01), Weingand
patent: 2144900 (1939-01-01), Smith
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patent: 2910380 (1959-10-01), Shiner
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patent: 4164536 (1979-08-01), Bentley
patent: 4195054 (1980-03-01), Verellen
Becker Reinhold
Gord Herbert
Hoechst Aktiengesellschaft
Michl Paul R.
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