Recyclable paper with polymeric barrier layer and method of recycling the same
AssigneeSonoco Development, Inc.
InventorScott William Huffer
Life of this patent
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Abstract
A recyclable structure and methods of recycling are provided herein. A recyclable structure for use in packaging comprises a paper layer, and a polymeric film layer. An adhesive layer adhesively joins the paper layer and the polymeric layer. The adhesive layer comprises an acrylic or a urethane adhesive. The recyclable structure 85% by subjecting the structure to mechanical stresses and repulping. The adhesive layer has a greater affinity for the polymeric film layer than the paper layer. Upon repulping the adhesive layer is mostly separated from the fibers within the paper layer.
Claims18
A recyclable structure for use in packaging, the structure comprising:
- a paper layer forming an exterior layer of the structure;
- a polymeric layer forming an interior layer of the structure;
- an adhesive layer adhesively joining the paper layer and the polymeric layer, wherein the adhesive layer has a greater affinity for the polymeric layer than the paper layer such that when exposed to mechanical stress the adhesive layer fractures internally into at least a first portion adjacent the paper layer and a second portion adjacent the polymeric layer and wherein, in a cross-section of the layers, the first portion is smaller than the second portion.
A recyclable structure for use in packaging, the structure comprising:
- a paper layer defining a first surface and a second surface;
- an adhesive layer disposed adjacent the second surface;
- a polymeric layer disposed adjacent the adhesive layer, opposite the paper layer, wherein the adhesive layer has an affinity for the polymeric layer, such that when exposed to mechanical stress the adhesive layer fractures internally into at least a first portion adjacent the paper layer and a second portion adjacent the polymeric layer and wherein, in a cross-section of the layers, the first portion is smaller than the second portion;
- and
- a barrier layer disposed on the polymeric layer.
Dependencies are inferred from the claim text.