Multiple compartment pouch and beverage container with frangible seal
View Patent ↗A polymeric film, multiple-compartment, pouch having an internal frangible seal for confining a fluid and related beverage container with a re-closable fitment for storing and delivering two different flavored liquids or the like. The frangible seal of the clear plastic pouch will burst when sustained squeezed thus allowing the flavors to swirl and mix within the pouch.
1. A flexible multiple-compartment pouch comprising:
(a) a first sheet of polymeric film;
(b) a second sheet of polymeric film superimposed on said first sheet of polymeric film wherein said first and second sheets of polymeric film are sealed to each other directly or indirectly through a third intervening polymeric film thus defining a sealed perimeter having a bottom end, an end opposing the bottom, and two opposed sides, forming a closed pouch;
(c) at least one curved frangible seal extending from the end opposing the bottom end to one of said opposed sides and internal to the perimeter and said at least one curved frangible seal divides said closed pouch into separated compartments comprising a first compartment and a second compartment; and
(d) a fluid confined to the fast compartment wherein the seal strength of said sealed perimeter is sufficient to withstand manual compression of the fluid and the seal strength of said at least one curved frangible seal is insufficient to withstand manual compression of the fluid thus allowing said fluid to commingle with the contents of the second compartment.
2. The flexible multiple-compartment pouch of claim 1 wherein said at least one curved frangible seal delaminates upon sustained manual compression producing a pressure increase within said first compartment of up to 10 psig.
3. The flexible multiple-compartment pouch of claim 2 wherein said at least one curved frangible seal is a smooth curved seal and the fluid is a beverage.
4. The flexible multiple-compartment pouch of claim 1 wherein said at least one curved frangible seal is a smooth curved seal.
5. A flexible multiple-compartment pouch of claim 4 wherein said at least one curved frangible seal seals said first sheet of polymeric film to said second sheet of polymeric film by one of heat-sealing and zone coating and the inner surface of at least one of said polymeric films comprises a blend of (a) 80 to 93 weight percent of an ethylene/acid ionomer wherein at least 50 weight percent of said ethylene/acid ionomer is derived from ethylene comonomer and wherein the degree of neutralization of acid is from 5 to 45 percent and (b) 20 to 7 weight percent of a propylene/α-olefin copolymer wherein the α-olefin comonomer comprises 1 to 12 weight percent of said copolymer.
6. A flexible multiple-compartment pouch of claim 4 wherein said at least one curved frangible seal seals said first sheet of polymeric film to said second sheet of polymeric film and the inner surface of at least one of said polymeric films at the at least one curved frangible seal is a blend comprising (a) an acid modified ethylene vinyl acetate copolymer or acid modified ethylene methyl acrylate copolymer as the major component and (b) a partially neutralized ethylene acid ionomer as the minor component.
7. The flexible multiple-compartment pouch of claim 4 wherein the inner surface of at least one of said polymeric films at the at least one curved frangible seal is a blend comprising (a) a partially neutralized ethylene acid ionomer as the major component and (b) polybutene-1 homopolymer or copolymers as the minor component.
8. The flexible multiple-compartment pouch of claim 4 wherein said pouch is a stand-up pouch.
9. The flexible multiple-compartment pouch of claim 1 wherein said at least one curved frangible seal has a seal strength of from 130 grams per inch to 5,000 grams per inch per inch and the fluid is a beverage.
10. The flexible multiple-compartment pouch of claim 1 wherein said at least one curved frangible seal experiences a seal breaking force of between 400 grams per inch and 6,000 grams per inch upon sustained manual compression producing a pressure increase within said first compartment of from 0.5 psig to 5 psig.
11. The flexible multiple-compartment pouch of claim 1 wherein said pouch is a stand-up pouch.
12. The flexible multiple-compartment pouch of claim 11 further comprising a fitment.
13. The flexible multiple-compartment pouch of claim 11 wherein said pouch is generally rectangular.
14. The flexible multiple-compartment pouch of claim 1 wherein said at least one curved frangible seal seals said first sheet of polymeric film to said second sheet of polymeric film by heat-sealing or zone coating and the inner surface of at least one of said polymeric films comprises a blend of (a) 80 to 93 weight percent of an ethylene/acid ionomer wherein at least 50 weight percent of said ethylene/acid ionomer is derived from ethylene comonomer and wherein the degree of neutralization of acid is from 5 to 45 percent and (b) 20 to 7 weight percent of a propylene/α-olefin copolymer wherein the α-olefin comonomer comprises 1 to 12 weight percent of said copolymer.
15. The flexible multiple-compartment pouch of claim 1 wherein said at least one curved frangible seal seals said first sheet of polymeric film to said second sheet of polymeric film and the inner surface of at least one of said polymeric films at the at least one curved frangible seal is a blend comprising (a) an acid modified ethylene vinyl acetate copolymer or acid modified ethylene methyl acrylate copolymer as the major component and (b) a partially neutralized ethylene acid ionomer as the minor component.
16. The flexible multiple-compartment pouch of claim 1 further comprising a fitment.
17. The flexible multiple-compartment pouch of claim 1 wherein said pouch is generally rectangular.
18. The flexible multiple-compartment pouch of claim 1 wherein the inner surface of at least one of said polymeric films at the at least one curved frangible seal is a blend comprising (a) a partially neutralized ethylene acid ionomer as the major component and (b) polybutene-1 homopolymer or copolymers as the minor component.
19. The flexible multiple-compartment pouch of claim 1 wherein the inner surface of at least one of said polymeric films at the at least one curved frangible seal is a blend comprising (a) a metallocene polyethylene as the major component and (b) polypropylene or polybutene-1 homopolymer or copolymers as the minor component.
20. The flexible multiple-compartment pouch of claim 1 wherein the inner surface of at least one of said polymeric films at the at least one curved frangible seal is a blend comprising (a) a metallocene polyethylene as the major component and (b) polypropylene or polybutene-1 homopolymer or copolymers as the minor component.