Apparatus for making easy open and reclosable bags
AssigneeAndrew McG. Martin
InventorsAndrew McG. Martin, Kenneth C. Meyers, Daniel F. Pawling
Life of this patent
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Abstract
An easy open and reclosable bag has flexible sheet walls sealed together to form a pouch. A separable reclosure tie is located adjacent one of those seals. The reclosure tie is composed of extensions of the bag walls which have an integral channel-shaped molding spaced from that seal. A line of specially shaped, closely spaced apart perforations through the bag walls extends between the molding and the one seal to permit the reclosure tie to be separated from the pouch-defining walls of the bag. Apparatus for making the easy open and reclosable bag is also disclosed.
Claims6
Apparatus for making a series of sealed bags from a tube of flexible material which tube has a longitudinal axis, the improvement comprising
- A. a set of complimentary sealing jaws, said jaws having
- (1) first and second counterfacing corrugated surfaces defining a bag bottom sealing portion, and a bag top sealing portion, respectively, for sealing together the opposite walls of said tube to form the bottom seal of one bag and the top seal of an adjacent bag, said corrugations extending parallel to the tube axis so that the seals including corrugations which extend parallel to said axis,
- (2) third counterfacing surfaces between said first and second counterfacing surfaces for forming a mold channel in said tube walls which extends generally perpendicular to said tube axis, and
- (3) means between said third counterfacing surfaces and one of said first and second counterfacing surfaces for forming a series of perforations through said tube walls between one of said seals and said mold channel therein;
- and
- B. means for moving the jaws into contact, with the tube walls extending between them.
Apparatus for making a series of sealed bags from a tube of flexible material, the improvement comprising
- A. a set of complementary sealing jaws, said jaws having
- 1. first and second counterfacing surfaces defining a bag bottom sealing portion, and a bag top sealing portion, respectively, for sealing together the opposite walls of said tube to form the bottom seal of one bag and the top seal of an adjacent bag,
- 2. third counterfacing surfaces between said first and second counterfacing surfaces for forming a mold channel in said tube walls which extends generally parallel to said seals, and
- 3. means between said third counterfacing surfaces and one of said first and second counterfacing surfaces for forming a series of perforations through said tube walls between one of said seals and said mold channel therein;
- 4. means between said third counterfacing surfaces and the other of said first and second counterfacing surfaces for severing the tube to separate the adjacent bags;
- and
- B. means for moving the jaws into contact, with the tube walls extending between them.
Dependencies are inferred from the claim text.