Sheet with breakaway line

Details Sheet with breakaway line Sheet with breakaway line

1974-08-19

1978-06-06

Dixon, Jr., William R.

Stock material or miscellaneous articles

Sheet, web, or layer weakened to permit separation through...

174 72A, 428122, 428126, 428127, 428130, 428192, 428358, B65D 6528, G09F 300, B32B 304

Patent

active

040937615

ABSTRACT:
A sheet of extruded material is provided with a breakaway line by positioning a pin in the extrusion die in a manner such that the pin extends into the path of the material being extruded to divide a portion of the material into two streams which rejoin each other past the pin and weld together to form an autogenous bond between the converging surfaces. In a preferred embodiment the breakaway line is present in the sides of a U-shaped channel of the type used as a duct for electrical wiring.

REFERENCES:
patent: 3126444 (1964-03-01), Taylor
patent: 3706173 (1972-12-01), Taylor

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