Plastic bag and method of manufacture

Details Plastic bag and method of manufacture Plastic bag and method of manufacture

1974-07-22

1976-06-08

Garbe, Stephen P.

Envelopes, wrappers, and paperboard boxes

File folder or file envelope

Hanging type

206390, 229 69, 229DIG3, B65D 3316

Patent

active

039617432

ABSTRACT:
A series of plastic bags are manufactured by extruding the plastic in tubular form and heat-sealing and perforating the flattened tube at spaced intervals. The shape of the heat seal and perforation is such that long ears are formed at opposite ends of the top of each bag. These ears can be tied together to close the bag and form a grasping handle. As illustrated, the ears are formed by folding in the sides of the extruded tube so as to provide a narrower roll, and shifting the layers with respect to each other so that only two ears will be formed on each bag by the heat seal and perforation.

REFERENCES:
patent: 3107989 (1963-10-01), Fesco
patent: 3180557 (1965-04-01), Thulin
patent: 3352411 (1967-11-01), Schwarzkopf
patent: 3710396 (1973-01-01), Tomlinson

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