Easy-open flow-wrap package

1. A peel-open, non-reclosable package formed from a single thermoplastic laminate comprising a first film, a second film and a lamination film or lamination layer, wherein the laminate comprises a first sealing section having an interior surface, and a second sealing section having an interior surface; the package comprising:

a first side edge;

an opposing second side edge;

a third side edge;

an opposing fourth side edge;

a peelable heat-seal seam adhering the interior surface of the first sealing section to the interior surface of the second sealing section; and

an asymmetric cross-sectional seal interface within the peelable heat-seal seam formed by disjoining a segment of the first film from the first sealing section prior to heat sealing the first and second sealing sections together, wherein the asymmetric cross-sectional seal interface comprises two different films of the first film, the second film and the lamination film or lamination layer on either side of the asymmetric cross-sectional seal interface.

2. The package according to claim 1 , wherein the lamination layer or lamination film adheres the first film to the second film.

3. The package according to claim 1 , wherein the first film is a coextruded multilayered non-oriented film.

4. The package according to claim 1 , wherein the second film is an oriented film.

5. The package according to claim 1 , wherein the package comprises a first fin seal positioned proximal to the first side edge and the peelable heat-seal seam is formed within the first fin seal.

6. The package according to claim 5 , wherein the package comprises a first fold located at the second side edge.

7. The package according to claim 6 , wherein the package comprises a second fin seal positioned at the third side edge and a third fin seal positioned proximal to the opposing fourth side edge.

8. The package according to claim 1 , wherein the package comprises a first fold located at the first side edge, a first fin seal positioned proximal to the second side edge, a second fin seal positioned proximal to the third side edge and a third fin seal positioned proximal to the fourth side edge; wherein the peelable heat-seal seam is disposed adjacent to the first fold.

9. The package according to claim 8 , wherein the package comprises a score line in the laminate or tear strip each positioned between the first fold and the peelable heat-seal seam.

10. The package according to claim 1 , wherein the package comprises a first fold located at the first side edge, a second fold located at the second side edge, a first fin seal positioned between the first side edge and the second side edge, a second fin seal positioned proximal the third side edge, a third fin seal positioned proximal to the fourth side edge, wherein the peelable heat-seal seam is formed within the first fin seal.

11. The package according to claim 1 , wherein the package comprises a first fold located at the first side edge, a second fold located at the second side edge, a first fin seal positioned between the first side edge and the second side edge, a second fin seal positioned proximal the third side edge, a third fin seal positioned proximal to the fourth side edge, wherein the peelable heat-seal seam is disposed adjacent to the first fold.

12. The package according to claim 11 , wherein the package comprises a score line in the laminate or tear strip each positioned between the first fold and the peelable heat-seal seam.

13. The package according to claim 1 , wherein the lamination film or lamination layer comprises a peelable or frangible blend of immiscible thermoplastic resins.

14. The package according to claim 13 , wherein the lamination film comprises a first layer comprising the peelable or frangible blend of immiscible thermoplastic resins and a second layer comprising a heat sealable resin which is positioned between the first layer and the first film.

15. The package according to claim 14 , wherein the lamination film comprises a third layer comprising a heat sealable resin which is positioned between the first layer and the second film.

16. The package according to claim 13 , where the blend comprises a polybutene-1 resin and at least one resin selected from the group consisting of polyethylene, polypropylene, ethylene butene copolymer, ethylene vinyl acetate copolymer, propylene ethylene copolymer, ethylene acrylic acid copolymer, ethylene n-butyl acrylate, ethylene methyl acrylic acid copolymer, and ethylene methylacrylate copolymer.

17. The package according to claim 1 , wherein the interior surface of the first sealing section is the lamination film or lamination layer.

18. The package according to claim 1 , wherein the interior surface of the second sealing section is an exterior layer of the first film.

19. The package according to claim 18 , wherein the exterior layer comprises an ethylene vinyl acetate copolymer having a melt index of at least 20 g/10 min.

20. The package according to claim 18 , wherein the exterior layer has a thickness of between 12.7 μm and 17.8 μm (0.5 mil and 0.7 mil).

21. The package according to claim 1 , wherein the second film comprises an exterior layer of a material selected from the group consisting of oriented polyethylene terephthalate, oriented polypropylene, oriented polyamide and paper.

22. The package according to claim 21 , where the exterior layer of the second film is an exterior package surface.

23. The package according to claim 1 , where the package is either a vertical flow-wrap package or a horizontal flow-wrap package.