Transverse direction zipper tape
AssigneeIllinois Tool Works Inc.
InventorsArt Malin, Lawrence Share, Donald L. Van Erden
Life of this patent
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Abstract
A zipper strip for a reclosable package having a transverse zipper is provided. The zipper strip comprises a male interlocking profile and a female interlocking profile. Each profile includes an interlocking member and an integral web which defines a leading flange. The leading flanges are sealed to thermoplastic film material which is used to make the reclosable packages and to each other. One of leading flanges is provided with a perforation along its length so that it can be separated by pulling the profiles apart.
Claims4
A zipper strip for a reclosable package having first and second opposing walls, said zipper strip comprising:
- a male interlocking profile, said male interlocking profile including a male interlocking member and an integral web defining a male leading flange;
- a female interlocking profile, said female interlocking profile including a female interlocking member and an integral web defining a female leading flange, said male interlocking member being engageable within said female interlocking member to join said male and female interlocking profiles together;
- wherein one of said leading flanges is provided with a perforation along its length, a first seal area on said one of said leading flanges on the side of said perforation opposite to said interlocking members, a second seal area on said one of said leading flanges on the same side of said perforation as said interlocking members, a third seal area on the other leading flange opposite to said first seal area, and a fourth seal area on the other leading flange opposite to said second seal area;
- wherein the leading flange having said perforation is sealable to the other leading flange at said first and third seal areas;
- wherein the other leading flange is sealable to said first package wall at said third seal area;
- wherein the leading flange having said perforation is sealable to said second package wall at said second seal area;
- and
- wherein the other leading flange is sealable to said first package wall at said fourth seal area.
A zipper strip for a reclosable package having first and second opposing walls, said zipper strip comprising:
- a male interlocking profile, said male interlocking profile including a male interlocking member and an integral web defining a male leading flange;
- a female interlocking profile, said female interlocking profile including a female interlocking member and an integral web defining a female leading flange, said male interlocking member being engageable within said female interlocking member to join said male and female interlocking profiles together;
- and a nose portion joining said leading flanges;
- wherein one of said leading flanges is provided with a perforation along its length with said nose portion located on the side of said perforation opposite to said interlocking members, said perforation defining a first seal area on said one of said leading flanges on the same side of said perforation as said interlocking members and a second seal area on the other leading flange opposite to said first seal area;
- wherein said nose portion is sealable to one of said package walls;
- wherein the leading flange having said perforation is sealable to the other package wall at said first seal area;
- and
- wherein the other leading flange is sealable to the same package wall as said nose portion at said second seal area.
Dependencies are inferred from the claim text.