Pad-stacked bags or similar packaging, and apparatus and method for fabricating the same from plastic film
OwnerHans Lehmacherinventor
Life of this patent
Estimating the term…
Abstract
Thermoplastic film bags or like packaging sections with or without hanger holes are stacked and welded into pads from which individual bags are easily hand-torn for use. Bag sections, each with a hanger portion and having an arched cut in one wall, are produced three at a time from a continuously longitudinally sub-divided and side seam welded, wide flattened film tube stock web, after incising the cuts at three transversely spaced places in one layer; the sections are stacked and at the hanger parts welded into a pad, and the pad is transversely perforated through the incised arched cuts and hanger holes punched in the hanger part.
Claims12
A pad of tear-off bags or like packaging of thermoplastic synthetic plastic film and constituted of a stack of bag sections comprised of said film, said sections each corresponding to a respective bag, each bag section comprising a front wall and a back wall coextensive with the front wall, each section including a tear-off portion and a transverse suspension portion, the suspension portion having hanger holes, the portions of each section being separable along a line of perforations through both said walls, the said sections being connected at the suspension portions thereby to form the pad with a pad suspension portion, with the improvement comprising:
- a continuous padding welding seam extending in over substantially the entire width of each suspension portion whereby the sections are connected into a pad unit.
A pad of tear-off bags constituted of a stack of thermoplastic synthetic film bag sections each corresponding to a respective bag,
- each bag section comprising a front wall and a back wall coextensive with the front wall and having an upper suspension portion and a tear-off bag portion separable therefrom along a line of perforations,
- the said sections being connected at the suspension portions thereby to form the pad with a pad suspension portion, the pad suspension portion being provided with at least one hanger aperture,
- with the improvement comprising:
- in each bag section a front wall having a central incision dividing the central part of the tear-off bag portion from the respective suspension portion, and
- the line of perforations through both said walls running into the incision from each side of the section;
- the sections being connected to one another by a padding weld in the suspension portions, and
- each being closed across its bottom to afford a closed bag bottom.
Dependencies are inferred from the claim text.