Pad-stacked bags or similar packaging, and apparatus and method for fabricating the same from plastic film

Claim 2

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.

Claim 3

A pad as described in claim 1, wherein the suspension portion region between the padding weld seam and the perforation line is free of film discontinuities.

Claim 4

A pad as described in claim 1, wherein each bag section is closed at its bottom by a severing welding type weld.

Claim 5

A pad as described in claim 1, wherein the padding welding seams are located in the space between the perforation line and the hanger holes of each said section.

Claim 6

A pad as described in claim 1, wherein said padding welding seams are located along the free edge of each respective suspension portion.

Claim 7

A pad as described in claim 1, wherein said padding welding seams are located between the hanger holes and the free edge of each respective suspension portion.

Claim 8

A pad as described in claim 1, wherein each said suspension portion has a line of spaced pin punctures running across the width thereof.

Claim 9

A pad as described in claim 1, with the further 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, said incision having a flat bottomed U-shape, and the perforation line extending over the entire width of the bag section and crossing through both limbs of the U-shaped incision, the bottom edge of the incision being spaced parallel to the perforation line; whereby a bag torn from the suspension portion has, in one bag wall edge at its mouth, a recess corresponding to the contour of the U-shaped incision beneath the perforation line and a projecting flap corresponding to the recess remains on the suspension portion.

Claim 10

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.

Claim 11

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.

Claim 12

A pad as described in claim 9, wherein the incision has an inverted arch shape, and the perforation line intersects both side limbs of the said incision.

Claim 13

A pad as described in claim 10, wherein a bottom edge of the U-shaped incision is spaced parallel to the perforation line, whereby a bag torn from the suspension portion has, at its mouth a recess on one bag wall edge, corresponding to the contour of the arch shaped incision beneath the perforation line and a projecting flap corresponding to the recess remains on the suspension portion,

Claim 14

A pad as described in claim 9, wherein the said incision has a flat bottomed U-shape, and the perforation line extends over the entire width of the bag sections and crosses through both limbs of the U-shaped incision.