Teardrop sealant layer for profile and spacer areas for improved sealing and guiding
First Claim
1. A reclosable zipper for positioning between two layers of web material comprising:
- a first profile member having a base, an interlocking closure element extending from the base and at least one flange extending from the base, the flange having an inner surface and an outer surface;
a second profile member having a base, an interlocking closure element extending from the base and at least one flange extending from the base, the flange having an inner surface and an outer surface;
a first sealant layer formed on the outer surface of at least one flange of the first profile member and a second sealant layer formed on the outer surface of at least one flange of the second profile member, the first sealant layer and the second sealant layer protruding from the flanges wherein the first sealant layer and second sealant layer have a generally teardrop shape to define an open air gap between the first profile member and a first layer of web material and the second profile member and a second layer of web material;
and a standoff area formed on the inner surfaces of the flanges having the first sealant layer and the second sealant layer.
4 Assignments
0 Petitions
Accused Products
Abstract
A reclosable zipper for use with package, such as food and non-food packages, that include first and second mating profile members. Each of the first and second profile members of the zipper closure includes a pair of flanges each having a sealant layer. The sealant layer formed on each of the flanges protrudes past the outer surface of the flange such that the outer surface of the sealant layer contacts the film of web material. The sealant layer is formed from a material different than the material that forms the remaining portions of the first and second profile members such that the sealant layer melts and forms a bond with the web material upon the application of heat. Each of the profile members includes a standoff area formed along the inner surface of each flange to provide support for the flange during the application of the heating element.
32 Citations
17 Claims
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1. A reclosable zipper for positioning between two layers of web material comprising:
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a first profile member having a base, an interlocking closure element extending from the base and at least one flange extending from the base, the flange having an inner surface and an outer surface; a second profile member having a base, an interlocking closure element extending from the base and at least one flange extending from the base, the flange having an inner surface and an outer surface; a first sealant layer formed on the outer surface of at least one flange of the first profile member and a second sealant layer formed on the outer surface of at least one flange of the second profile member, the first sealant layer and the second sealant layer protruding from the flanges wherein the first sealant layer and second sealant layer have a generally teardrop shape to define an open air gap between the first profile member and a first layer of web material and the second profile member and a second layer of web material; and a standoff area formed on the inner surfaces of the flanges having the first sealant layer and the second sealant layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A reclosable zipper for positioning between two layers of web material comprising:
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a first profile member having a base, an interlocking closure element extending from the base and a pair of flanges each extending from the base, each flange having an inner surface, an outer surface and an edge spaced from the interlocking closure element; a second profile member having a base, an interlocking closure element extending from the base and a pair of flanges each extending from the base, each flange having an inner surface, an outer surface and an edge spaced from the interlocking closure element; a first sealant layer formed on the outer surface of at least one flange of the first profile member and a second sealant layer formed on the outer surface of at least one flange of the second profile member, the first sealant layer and the second sealant layer protruding from the outer surfaces of the flanges wherein the first sealant layer and second layer have a generally teardrop shape to define an open air gap between the first profile member and a first layer of web material and the second profile member and a second layer of web material. - View Dependent Claims (15, 16, 17)
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Specification