Back to results
US 2010/0150479 A1Published application
Multi-layered bags and methods of manufacturing the same
AssigneeExopack, LLC
InventorAllyson Smith
Life of this patent
Estimating the term…
Abstract
A bag can include walls formed of a material having multiple layers, one of which can be a layer of nonwoven material. A polyolefin layer can be joined to an outer face of the nonwoven layer. One or more films can be joined to an inner face of the nonwoven layer.
Claims30
A bag comprising:
- a body material that defines a front wall, a back wall, a first side wall, and a second side wall, the body material comprising a first layer and a second layer, wherein the first layer comprises a web of nonwoven material, and wherein the second layer comprises a polyolefin film laminated to an outwardly facing surface of the nonwoven material;
- and
- a closure at a first end of the bag, wherein the closure comprises a seal configured to prevent a product from exiting the bag via the first end.
A bag comprising:
- a body material that defines a front wall, a back wall, a first side wall, and a second side wall, the body material comprising an outer layer and an inner layer, wherein the outer layer comprises a web of nonwoven material, and wherein the inner layer comprises a substantially grease-impermeable polyolefin film laminated to an inwardly facing surface of the nonwoven material;
- and
- a closure at a first end of the bag, wherein the closure comprises a seal configured to prevent a product from exiting the bag via the first end.
A method of forming a bag, the method comprising:
- providing a web of nonwoven material;
- joining a polyolefin film to the web of nonwoven material to form a body material;
- shaping the body material into a body having a front wall and a back wall;
- and
- joining an end of the front wall with an end of the back wall to form a closure.
2 more elements
Dependencies are inferred from the claim text.