Tamper evident hybrid resealable container

Patent metadata

Field	Value
Publication number	US-10351294-B2
Application number	US-201715656481-A
Country	US
Kind code	B2
Filing date	Jul 21, 2017
Priority date	Jul 21, 2017
Publication date	Jul 16, 2019
Grant date	Jul 16, 2019

Abstract

The present invention relates to a composite container which has a bottom film layer and a top film layer at least partially adhered on its lower surface to the upper surface of the bottom film layer. The top film layer is scored to form at least one resealable flap and at least one pull tab continuous with the resealable flap, wherein the resealable flap is resealably adhered to the bottom film layer and the pull tab is not adhered to the bottom film layer. The bottom film layer comprises at least one cavity opening. A cardboard layer is adhered on its lower surface to the upper surface of the top film layer, wherein the cardboard layer has at least one cavity opening which is substantially aligned with the scoring of the top film layer resealable flap and the cardboard layer is perforated to form at least one pull tab which is substantially aligned with and adhered, on its underside, to the upper surface of the top film layer pull tab.

First claim

What is claimed is:

1. A resealable container comprising a container body having at least four sidewalls, a top wall, and a bottom wall, wherein at least one of the walls has a composite structure which comprises:
a bottom film layer;
a top film layer at least partially adhered on its lower surface to the upper surface of the bottom film layer, wherein:
the top film layer is scored to form at least one resealable flap and at least one pull tab continuous with the resealable flap, wherein the resealable flap is resealably adhered to the bottom film layer and the pull tab is not adhered to the bottom film layer; and
the bottom film layer comprises at least one cavity opening;

a cardboard layer adhered on its lower surface to the upper surface of the top film layer, wherein:
the cardboard layer has at least one cavity opening which is substantially aligned with the scoring of the top film layer resealable flap;
the cardboard layer is perforated to form at least one pull tab which is substantially aligned with and adhered, on its underside, to the upper surface of the top film layer pull tab; and
the at least one resealable flap is releasably sealed to the bottom film, the at least one resealable flap covers the bottom film cavity opening.

2. The resealable container of claim 1 , wherein a pressure sensitive adhesive at least partially adheres the top film layer and the bottom film layer.

3. The resealable container of claim 2 , wherein the pressure sensitive adhesive is pattern applied.

4. The resealable container of claim 1 , wherein a permanent adhesive at least partially adheres the top film layer and the bottom film layer.

5. The resealable container of claim 4 , wherein the permanent adhesive is pattern applied.

6. The resealable container of claim 1 , wherein a pressure sensitive adhesive at least partially adheres the top film layer and the bottom film layer and a permanent adhesive at least partially adheres the top film layer and the bottom film layer.

7. The resealable container of claim 1 , wherein the pull tab does is not coated with an adhesive.

8. The resealable container of claim 1 , wherein the pull tab has been deadened so as to not adhere to the bottom film layer.

9. The resealable container of claim 1 , wherein the container walls define an interior portion of the container and the bottom film layer cavity opening allows access to the container interior when the resealable flap is at least partially separated from the bottom film layer.

10. The resealable container of claim 1 comprising two resealable flaps and two bottom film layer cavity openings.

11. The resealable container of claim 1 , wherein the composite structure is located within the top wall of the container.

12. The resealable container of claim 11 , wherein the film layers are hermetically sealed within the top wall and at least partially within at least two side walls of the cardboard layer.

13. The resealable container of claim 1 , wherein the at least one resealable flap is positioned within the cardboard cavity opening.

14. The resealable container of claim 1 , wherein the at least one resealable flap comprises a transparent product viewing window within the perimeter of the bottom film cavity opening.

15. The resealable container of claim 1 , wherein the at least one cardboard pull tab is continuous with the at least one cardboard cavity opening.

16. The resealable container of claim 1 , wherein the at least one cardboard pull tab comprises at least one cut area between the pull tab and the container wall, such that a user can insert a finger into the cut area to separate the pull tab from the container wall.

17. The resealable container of claim 1 , wherein the at least one cardboard pull tab comprises a tab which is continuous with the pull tab but separated from the container wall, such that a user can grasp the tab to separate the pull tab from the container wall.

18. The resealable container of claim 1 , wherein once the at least one cardboard pull tab is separated from the container wall, it cannot be reaffixed to the container wall.

19. A method for forming a resealable container blank comprising:
providing a bottom film layer, a top film layer, and a cardboard layer;
laminating the upper surface of the bottom film layer to the underside of the top film layer using a pressure sensitive adhesive and a permanent adhesive to form a laminated film, wherein the adhesives are pattern applied;
scoring the top film layer to form at least one resealable flap which is continuous with at least one film pull tab;
scoring the bottom film layer to form at least one film cavity opening;
cutting the cardboard layer to form a container blank and at least one cardboard cavity opening;
perforating the cardboard layer to form at least one cardboard pull tab; and
adhering the upper surface of the laminated film to the underside of the cardboard layer using a permanent adhesive, wherein the cardboard cavity opening is substantially aligned with the resealable flap scoring and the cardboard pull tab perforations are substantially aligned with the film pull tab scoring, and wherein when the at least one resealable flap is releasably sealed to the bottom film, the at least one resealable flap covers the bottom film cavity opening.

20. The method of claim 19 , wherein a die cutting machine is utilized to score the film layers.

21. The method of claim 19 , wherein a laser is utilized to score the film layers.

22. The method of claim 19 , wherein the bottom film cavity opening is substantially aligned with an inner perimeter of the pressure sensitive adhesive.

23. The method of claim 19 , wherein the cardboard cavity opening is registered with an outer perimeter of the pressure sensitive adhesive.

24. The method of claim 19 , wherein the bottom film cavity opening is smaller than the cardboard cavity opening.

25. The method of claim 19 , additionally comprising cutting a section along a perimeter of the cardboard pull tab, such that a user can insert a finger into the cut section to separate the pull tab from the container wall.

26. The method of claim 19 , additionally comprising assembling the container blank into a container.

Assignees

• Sonoco Dev Inc

Inventors

• Huffer Scott William

Classifications

• B31B50/14

  Cutting, e.g. perforating, punching, slitting or trimming (cutting window openings B31B50/83) · CPC title

• B32B27/10

  of paper or cardboard · CPC title

• B32B7/14

  applied in spaced arrangements, e.g. in stripes · CPC title

• B23K26/364

  for making a groove or trench, e.g. for scribing a break initiation groove · CPC title

• B32B38/0004

  Cutting, tearing or severing, e.g. bursting; Cutter details (cutting in general B26D; laminating combined with punching or perforating B32B38/04; removing all or part of the layers B32B38/10; cutting in combination with laying up and registration B32B38/185 takes precedence) · CPC title