Special receptacle or package – Plural paper bags
Patent
1994-04-29
1996-06-18
Gehman, Bryon P.
Special receptacle or package
Plural paper bags
383 9, 383 37, B65D 3314
Patent
active
055269346
ABSTRACT:
A wicketless pack of thermoplastic bags includes a stack of a number of individual thermoplastic bags. Each of the bags has a bottom edge, upper and lower walls, a pair of side edges, and an open top end. A lip segment is provided adjacent the open end of each individual bag. The lip portion is an extension of the material forming the lower wall of a respective bag and includes at least one locating hole. A perforated tear line is formed between the open end of the bag and the lip portion. The lip segments of the stack are bonded together with ultrasonic vibratory energy to form a welded pad of lips as part of the bag pack. The welded pad is formed by moving at least one shaped ultrasonic horn downward through the stack of consecutive lips while activating the shaped horn with ultrasonic vibratory energy to form a continuous tapered weld through the stack of lip portions.
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Pickering Gordon F.
Wilkes Bruce R.
Bollella Donald
Brown Ron D.
Gehman Bryon P.
Huntsman Packaging Corporation
Stolle Russell R.
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