Apparatus for and method of manufacture of a textured vinyl post

Details Apparatus for and method of manufacture of a textured vinyl post Apparatus for and method of manufacture of a textured vinyl post

1992-11-23

1994-06-14

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

264148, 264178R, 264323, 264DIG69, 425208, 4253761, 425461, 425466, B29C 4712, B29C 4786

Patent

active

053207947

ABSTRACT:
A method of manufacture of a extruded vinyl product to provide a textured stake construction includes an extruder screw and a die having specific structural, and dimensional characteristics and temperature parameters. The extruder screw has a flight depth in the meter zone which is about one half the flight depth in the feed zone and deeper than extruder screws of conventional design. The die includes a frusto-conical section connected to a cylindrical passage. The extruded vinyl stake will have a knobby or textured surface.

REFERENCES:
patent: 2627089 (1953-02-01), Norwood
patent: 2702408 (1955-02-01), Hartland
patent: 3518721 (1970-07-01), Rukas et al.
patent: 3676034 (1972-07-01), Wendricks
patent: 3994661 (1976-11-01), Salemme
patent: 4008035 (1977-02-01), Korostoff et al.
patent: 4187068 (1980-02-01), Vassar
patent: 4238435 (1980-12-01), Liebisch

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