Apparatus for co-extruding a rubber strip of one material with a

Details Apparatus for co-extruding a rubber strip of one material with a Apparatus for co-extruding a rubber strip of one material with a

1984-12-10

1985-11-12

Hoag, Willard E.

Plastic article or earthenware shaping or treating: apparatus

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

Extrusion shaping means

425462, B29C 4706, B29C 4712

Patent

active

045525218

ABSTRACT:
The extrusion of a tire sidewall or tread and sidewall strip with a white sidewall stripe integrally formed therewith is made possible by an improved, modified preform unit for extrasion die. The preform unit has a first passageway for the sidewall or tread-sidewall strip that extends from the entrance side through to the exit side of the unit. The unit is modified to include a second passageway for the white sidewall material that introduces the white material into the stream of the black sidewall material as it passes through the unit. Upstream of the point where the white side material is introduced, the blockage means interrupts the flow of the black material, creating a void in the stream into which the white material can flow.

REFERENCES:
patent: 1603812 (1926-10-01), Stein
patent: 2096362 (1937-10-01), Lehman
patent: 2138378 (1938-11-01), Johnson
patent: 2382177 (1945-08-01), Schanz
patent: 2404630 (1946-07-01), Griffiths
patent: 2569373 (1951-09-01), Fay
patent: 2807833 (1951-10-01), Schanz
patent: 3034941 (1962-05-01), Hessenthaler et al.
patent: 3099859 (1963-08-01), Eilersen
patent: 3280427 (1966-10-01), Smith
patent: 3464087 (1969-09-01), Koch
patent: 3486195 (1969-12-01), Greenwood et al.
patent: 3715420 (1973-02-01), Kiyono et al.
patent: 3799718 (1974-03-01), Kiyono et al.
patent: 3849045 (1974-11-01), Ohkawa et al.
patent: 3864069 (1975-02-01), Takiura et al.
patent: 3959432 (1976-05-01), Wiley
patent: 4128386 (1978-12-01), Wissinger et al.
patent: 4134952 (1979-01-01), Yoshikawa et al.
patent: 4187270 (1980-02-01), Bartrum
patent: 4443397 (1984-04-01), Hahn et al.

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