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US 2017/0361993 A1Published application
Bags having composite structures and related methods
AssigneeCoveris Holding Corp.
InventorsStuart Sharp, Allyson Smith, George Solomon
Life of this patent
Estimating the term…
Abstract
A bag can include walls formed of a material having multiple layers, which can include a paper layer located between an outer layer and an inner layer. The outer layer can be formed from a nylon material and the inner layer can be formed from a polyolefin material, and the bag can exhibit grease-resistant properties. The bag can be formed into a variety of configurations, such as a sewn-open-mouth configuration in which a stitching element extends through a wall of the bag or a variety of pinch-type closure configurations.
Claims21
1-36. (canceled)
A bag comprising:
- a tube formed of a body material, wherein the body material has an exterior surface and an interior surface, wherein the body material comprises:
- a paper layer, wherein the paper layer has an outwardly facing surface and an inwardly facing surface, wherein the paper layer comprises an extensible paper;
- a polyamide layer having an outer surface and an inner surface, wherein the polyamide layer defines an outermost layer of the bag, and wherein the inner surface of the polyamide layer is adhered to the outwardly facing surface of the paper layer;
- and
- a polyolefin layer having an outer surface and an inner surface, wherein the outer surface is adhered to the inwardly facing surface of the paper layer,
- wherein a first end of the tube is closed so as to substantially prevent grease from entering or exiting the tube via the first end.
3 more elements
A bag comprising:
- a tube formed of a body material, wherein the body material has an exterior surface and an interior surface, wherein the body material comprises:
- a polyamide layer, wherein the polyamide layer has an outer surface and an inner surface, wherein the polyamide layer defines an outermost layer of the bag;
- a first paper layer having an inwardly facing surface and an outwardly facing surface, wherein the outwardly facing surface of the first paper layer is adhered to the inner surface of the polyamide layer;
- a second paper layer having an inwardly facing surface and an outwardly facing surface, wherein the outwardly facing surface of the second paper layer is adhered to an inwardly facing surface of the first paper layer, wherein at least one of the first and second paper layers comprises an extensible paper;
- and
- a polyolefin layer having an outer surface and an inner surface, wherein the outer surface is adhered to the inwardly facing surface of the second paper layer,
- wherein a first end of the tube is closed so as to substantially prevent grease from entering or exiting the tube via the first end.
4 more elements
A bag comprising:
- a tubular bag body comprising an inner ply and an outer ply,
- wherein the tubular bag body has an exterior surface and an interior surface,
- wherein the tubular bag body has a pair of opposing bag ends,
- wherein an inner face of the outer ply is adhered to an outer face of the inner ply,
- wherein the outer ply comprises an outwardly facing polyamide film and a paper layer, wherein the paper layer comprises a sheet of extensible paper, and
- wherein the inner ply comprises a grease-resistant material.
3 more elements
Dependencies are inferred from the claim text.