Method of forming a wrap around heat shrinkable closure with fle

Details Method of forming a wrap around heat shrinkable closure with fle Method of forming a wrap around heat shrinkable closure with fle

1988-04-18

1991-02-05

Ball, Michael W.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Stretching or stretch forming

156 86, 264342R, 264DIG71, B29C 5502, B29C 6102

Patent

active

049902989

ABSTRACT:
A heat shrinkable closure is disclosed having a central section which has been hot stretched and cooled while in stretched condition sandwiched between a pair of unstretched end sections and in which one end section has a tapered grooved extension.

REFERENCES:
patent: 3412891 (1968-11-01), Bastone
patent: 3826702 (1974-07-01), Chapman
patent: 3847721 (1974-11-01), Evans
patent: 3959052 (1976-05-01), Stanek
patent: 3973064 (1976-08-01), Raine
patent: 4153747 (1979-05-01), Young
patent: 4378393 (1983-03-01), Smuckler
patent: 4521420 (1985-06-01), Overbergh
patent: 4738883 (1988-04-01), Young

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