Package with peel seal tape between compartments and method of manufacture
AssigneeIllinois Tool Works Inc.
InventorsDonald L. Crevier, James H. Pool
Life of this patent
Estimating the term…
Abstract
A package having two or more compartments, adjacent compartments being separated by a peel seal tape. A peel seal is formed by joining peel seal material coated on one surface of a substrate to one package wall, the other surface of the substrate being coated with sealant material for hard sealing the substrate to the other package wall. The substrate and coatings are formed by extrusion. The adjacent compartments of the package are filled with different materials. When one compartment is squeezed with sufficient pressure, that pressure breaks open the peel seal, allowing the respective contents of the two compartments to be mixed without removing the contents from the still externally sealed package.
Claims26
A peel seal tape comprising:
- a substrate having first and second surfaces on opposite sides thereof;
- a first coating of peel seal material applied on at least a zone of said first surface of said substrate;
- and
- a second coating of sealant material applied on at least a zone of said second surface of said substrate, wherein said sealant material and said peel material each melt at temperatures lower than a melting temperature of said substrate.
A multi-compartment package comprising:
- first and second external walls joined to each other along at least part of a periphery to form a receptacle having an interior volume;
- peel seal tape disposed between and joined to said first and second external walls in a zone that divides said interior volume into first and second compartments;
- first material contained in said first compartment;
- and
- second material contained in said second compartment, said first and second materials having different compositions, wherein said peel seal tape comprises:
- a substrate having first and second surfaces on opposite sides thereof;
- a first coating of peel seal material applied on said first surface of said substrate and joined to said first external wall;
- and
- a second coating of sealant material applied on said second surface of said substrate and joined to said second external wall.
A peel seal tape comprising:
- a substrate having first and second surfaces on opposite sides thereof;
- a first coating of peel seal material applied on first and second zones of said first surface of said substrate, said first and second zones being mutually parallel;
- and
- a second coating of sealant material applied on at least a zone of said second surface of said substrate,
- wherein said sealant material and peel material each melt at temperatures lower than a melting temperature of said substrate.
A package comprising:
- first and second external walls joined or connected along portions of a periphery to form a receptacle having first and second sides and a bottom, said receptacle having a mouth along a remainder of said periphery;
- and
- peel seal tape joined to an interior surface of said first external wall, said peel seal tape extending from said first side of said receptacle to said second side, but not forming a seal in said receptacle,
- wherein said peel seal tape comprises:
- a substrate having first and second surfaces on opposite sides thereof;
- a first coating of peel seal material applied on said first surface of said substrate;
- and
- a second coating of sealant material applied on said second surface of said substrate and joined to said interior surface of said first external wall.
A method of manufacturing a package, comprising the following steps:
- feeding a first web of film material to a peel seal tape application station;
- feeding a peel seal tape to said peel seal tape application station, said peel seal tape comprising a substrate, a coating of peel seal material on one side of said substrate, and a coating of sealant material on the other side of said substrate;
- joining said sealant material of said peel seal tape to said first web of film material at said peel seal tape application station, said joining step being performed without activating said peel seal material;
- and
- forming a receptacle comprising first and second walls joined along a periphery except along a portion defining a mouth of said receptacle, wherein said peel seal tape is disposed inside said receptacle along a line that extends from one portion of said periphery to another portion of said periphery.
Dependencies are inferred from the claim text.