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US 5,470,015 AGranted
Tubular pouch with opening aid
AssigneeTeich Aktiengesellschaft
InventorWilfried Jud
Life of this patent
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AssigneeTeich Aktiengesellschaft
InventorWilfried Jud
Estimating the term…
A tubular pouch is provided with a tear-open strip which begins at a U-shaped perforation formed in one of two edge strips of the pouch which are joined across a junction area by cold-sealing into tubular pouch fins. The U-shaped perforation defines a grip formed by the wrapping material inside it and includes legs extending toward and entering the junction area. However, in its remaining portion, the U-shaped perforation does not reach as far as the junction area and thereby manufacturing tolerances relating to the U-shaped perforation and the relief cold bondings as well as lateral shifts between the two edge strips cannot result in bonding of the grip. When the grip is pulled to open the wrap, the wrapping material tears from the ends of the perforation along approximately parallel lines. The grip can be advantageously folded over 180.degree. in order to be readily grasped.
A tubular pouch for piece goods comprising a wrap formed by a planar, foldable wrapping material of which two edge strips are joined together in a junction area by a sealing means with one of said edge strips overlying the other of said edge strips and defining an outer surface of said wrap, a junction-free zone being present in said one of said edge strips, said junction-free zone being provided with a U-shaped perforation forming the beginning of a strip-shaped tear-open strip, said U-shaped perforation including a base and two legs with the legs pointing toward the junction area, at least one portion of said U-shaped perforation being located outside of the junction area and a segment of said one of the edge strips, that is enclosed along three sides by said U-shaped perforation and is located within said junction-free zone, is externally folded onto the outer surface of said wrap atop said junction area.
A tubular pouch for packaging piece goods comprising:
Dependencies are inferred from the claim text.