Zipper assembly for a flexible package and having a pressure sensitive adhesive
AssigneeIllinois Tool Works Inc.
InventorEric P. Plourde
Life of this patent
Estimating the term…
Abstract
A zipper assembly for a resealable package can include opposing webs each having an interlocking side and an opposite film side. Each of the interlocking sides can have a protruding interlocking body that mates with the protruding interlocking body of the other interlocking side to mate the webs with each other. The zipper assembly also can include PSA layers on the film sides of the webs. The PSA layers can include PSA that couples the webs to inside surfaces of films of the resealable package. The zipper assembly can include release liners disposed on the PSA layers. The release liners can be separated from the PSA layers prior to pressing the webs and the PSA layers into contact with the films of the resealable package to adhere the webs to the films.
Claims20
A zipper assembly for a resealable package, the zipper assembly comprising:
- opposing webs each having an interlocking side and an opposite film side, each of the interlocking sides having a protruding interlocking body configured to mate with the protruding interlocking body of the other interlocking side to mate the webs with each other;
- pressure sensitive adhesive (PSA) layers disposed on the film sides of the webs, the PSA layers including PSA configured to couple the webs to inside surfaces of films of the resealable package;
- and
- release liners disposed on the PSA layers, the release liners configured to be separated from the PSA layers prior to pressing the webs and the PSA layers into contact with the films of the resealable package to adhere the webs to the films.
A method comprising:
- co-extruding opposing webs, interlocking bodies that protrude from the webs, pressure sensitive adhesive (PSA) layers on the webs, and release liners on the PSA layers, wherein the webs, the interlocking bodies, the PSA layers, and the release liners are co-extruded to form a zipper assembly for a resealable package.
A zipper assembly for a resealable package, the zipper assembly comprising:
- opposing webs each having an interlocking side and an opposite film side, each of the interlocking sides having a protruding interlocking body configured to mate with the protruding interlocking body of the other interlocking side to mate the webs with each other;
- and
- pressure sensitive adhesive (PSA) layers disposed on the film sides of the webs, the PSA layers including PSA configured to couple the webs to inside surfaces of films of the resealable package.
Dependencies are inferred from the claim text.