Extruder head for applying coatings of polymeric material to sem

Details Extruder head for applying coatings of polymeric material to sem Extruder head for applying coatings of polymeric material to sem

1992-05-08

1994-02-15

Nguyen, Khanh P.

Plastic article or earthenware shaping or treating: apparatus

Distinct means to feed, support or manipulate preform stock...

Extrusion shaping means

4251331, 425141, 425150, 425171, 4253823, 425466, B29C 4702, B29C 4722, B29C 4724, B29C 4792

Patent

active

052861830

ABSTRACT:
An extruder head has an inner die member (5) housed in a supporting body (2) and provided with a central duct (6) continuously passed through by a semifinished product (7). An outer die member (9) exhibits a shaped housing (10) defining, in cooperation with the inner die member (5), an outflow port (11) for the mixture to be applied to the semifinished product (7). The shaped housing (10) is defined in a centering element (12) rotatably housed, according to an oblique and incident axis relative to the axis of the central duct (6), within an intermediate collar (13) rotating in the supporting body (2) in coaxial relation with the central duct itself. By rotating the centering element (12), the outflow port (11) moves from a centered position to a maximum-eccentricity position with respect to the central duct (6). The rotation of the intermediate collar (13) modifies the orientation of the common plane containing the axes of the outflow port (11) and central duct (6).

REFERENCES:
patent: 3382539 (1968-05-01), Zehs
patent: 3601851 (1971-08-01), Heidinger
patent: 3923439 (1975-12-01), Isley et al.
patent: 4137745 (1979-02-01), Muratov et al.
patent: 4464104 (1984-08-01), Greuss
patent: 4525131 (1985-06-01), Hauser, Jr.
Patent Abstracts of Japan vol. 4, No. 176 (M-45) (658 Dec. 5, 1980).

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