Method of manufacturing multi-layer resin material

Details Method of manufacturing multi-layer resin material Method of manufacturing multi-layer resin material

1986-05-22

1990-04-17

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

With measuring, testing, or inspecting

Controlling rate of movement of molding material or its...

264 37, 264171, 264211, 264DIG69, 4251311, 4251335, 425145, 425146, 425462, B29C 4706, B29C 4712, B29C 4792, B32B 3130

Patent

active

049178512

ABSTRACT:
A method of manufacturing a multi-layer resin material by employing a plurality of kinds of thermoplastic resin. Resins for inner and outer layers are supplied into a feed block of a feed block type T-die coextrusion apparatus where they are laid up another, and are then sent to the T-die side. In this case, a resin which is practically similar to the resin for the outer layer is supplied as an auxiliary resin to both lateral edges of the multi-layer resins within the feed block. Thus, the sheet extruded from the T-die slit has lateral edges which are made of a single resin.

REFERENCES:
patent: 3398431 (1968-08-01), Corbett
patent: 4208175 (1980-06-01), Rosenbaum
patent: 4337298 (1982-06-01), Karim et al.
patent: 4348346 (1982-09-01), Thompson
patent: 4443397 (1984-04-01), Hahn et al.
patent: 4476080 (1984-10-01), Komoda et al.
patent: 4483812 (1984-11-01), Hahn et al.
patent: 4533510 (1985-08-01), Nissel

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