Manufacturing container or tube from paper; or other manufacturi – Container making – Pliable container
Patent
1984-09-20
1986-11-25
Larson, Lowell A.
Manufacturing container or tube from paper; or other manufacturi
Container making
Pliable container
493224, 493225, 493232, B31B 164
Patent
active
046246541
ABSTRACT:
A method of forming plastic film bag bodies with draw strips comprises the steps of providing a continuous length of plastic film once folded to provide superposed panels and two free longitudinal edges opposite a fold edge, folding the two longitudinal free edges inwardly between the adjoining panels to provide a pair of longitudinal inwardly turned hems of double thickness, inserting a continuous material draw strip into each hem, joining together longitudinally the double layer thicknesses of each hem to form a channel along a longitudinal edge of each panel containing one of the continuous strips and transversely severing the material and strips at regular intervals to separate individual bag body lengths from the continuous web of material. Holes are punched along the folded hems of the bag before the draw tapes are inserted so as to allow access to the inserted tapes in the manufactured bag.
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Boyd Dana M.
Bustin Franz
Gilman Michael G.
Larson Lowell A.
McKillop Alexander J.
Mobil Oil Corporation
Showalter Robert
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