Extrusion method and apparatus for producing a molding strip

Details Extrusion method and apparatus for producing a molding strip Extrusion method and apparatus for producing a molding strip

1990-08-29

1992-05-12

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Layered, stratified traversely of length, or multiphase...

2641771, 2641772, 425114, 4251311, 4251335, 425462, B29C 4706

Patent

active

051125498

ABSTRACT:
Extrusion method and apparatus for producing a molding strip which includes a decorative Mylar plastic strip located between a pair of interbonded plastic layers is disclosed. The top plastic layer or top coat is clear so that the decorative strip can be seen therethrough. A single die is utilized to produce the molding strip. The plastic layers are both preferably flexible PVC plastic which are interbonded by interfusion between adjacent surfaces while in a molten state within a bonding chamber of the die so that the plastic layers do not separate during use of the molding strip. The top coat is interbonded with the other plastic layer or body without requiring the clear plastic to totally encapsulate the resulting molding strip. Also, preferably, a reenforcement wire is embedded in the plastic body within the bonding chamber to give the molding strip additional strength.

REFERENCES:
patent: 2401550 (1946-06-01), Cook, Jr.
patent: 3813199 (1974-05-01), Friesner
patent: 4314872 (1982-02-01), Schiesser
patent: 4563141 (1986-01-01), Zoller
patent: 4712989 (1987-12-01), Schiesser
patent: 4722818 (1988-02-01), Zoller
patent: 4965103 (1990-10-01), Roberts et al.

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