Production of stretch plastic film

Details Production of stretch plastic film Production of stretch plastic film

1998-05-18

2000-12-19

Thibodeau, Paul

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

1563082, 1563096, 2642093, B29C 4720

Patent

active

061623180

ABSTRACT:
Stretch plastic film is formed by extruding suitable plastic material from an annular die as a tubular film, forming extruded film into a bubble with air entrapped therein by collapsing the tubular film at a predetermined distance from the annular die, and causing the temperature of the tubular film when collapsed to be sufficiently high to cause opposite sides of the collapsed film to become bonded together to form a single layer of film.

REFERENCES:
patent: 4189288 (1980-02-01), Halter
patent: 4277594 (1981-07-01), Matthews et al.
patent: 4863770 (1989-09-01), Knox, III et al.
patent: 5407732 (1995-04-01), Dokurno
patent: 5458841 (1995-10-01), Shirrell

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