Degradable paper with long-shelf-life adhesive backing
View Patent ↗A degradable paper article with long-shelf-life adhesive backing, together with a related fabrication method. The article includes a layer of degradable paper, a layer of degradable pressure sensitive adhesive, a release liner on the adhesive layer, and a degradable polymer blocking layer disposed between the adhesive layer and the paper layer that blocks adhesive from bleeding into said paper.
1. A degradable paper article with long-shelf-life adhesive backing, comprising:
a layer of degradable paper;
a layer of degradable pressure-sensitive adhesive;
a release liner on said adhesive layer; and
a degradable polymer blocking layer disposed between said adhesive layer and said paper layer that blocks adhesive from bleeding into said paper.
2. An article in accordance with claim 1 , wherein said paper layer comprises water degradable paper.
3. An article in accordance with claim 1 , wherein said adhesive comprises water degradable adhesive.
4. An article in accordance with claim 1 , wherein said release liner comprises a water degradable release paper or film.
5. An article in accordance with claim 1 , wherein said polymer blocking layer comprises polyvinyl alcohol.
6. An article in accordance with claim 1 , wherein said polymer blocking layer comprises one of a film or a coating.
7. An article in accordance with claim 1 , wherein said polymer blocking layer is in direct contact with said adhesive layer.
8. An article in accordance with claim 1 , wherein said polymer blocking layer is in direct contact with said paper layer.
9. An article in accordance with claim 1 , wherein said article further includes a barrier coating disposed between said polymer blocking layer and said paper layer or between said polymer blocking layer and said adhesive layer.
10. An article in accordance with claim 1 , wherein said article is one of an adhesive label or adhesive tape.
11. A method for fabricating a degradable paper article with long-shelf-life adhesive backing, comprising:
providing a layer of degradable paper;
providing a layer of degradable adhesive;
providing a release liner on said adhesive layer; and
providing a degradable polymer blocking layer disposed between said adhesive layer and said paper layer that blocks adhesive from bleeding into said paper.
12. A method in accordance with claim 11 , wherein said paper layer comprises water degradable paper.
13. A method in accordance with claim 11 , wherein said adhesive comprises water degradable adhesive.
14. A method in accordance with claim 11 , wherein said release liner comprises a release paper or film.
15. A method in accordance with claim 11 , wherein said polymer blocking layer comprises polyvinyl alcohol.
16. A method in accordance with claim 11 , wherein said polymer blocking layer comprises one of a film or a coating.
17. A method in accordance with claim 11 , wherein said polymer blocking layer is provided by spraying or coating a liquid polymer on one of said paper layer or said adhesive layer.
18. A method in accordance with claim 11 , wherein said polymer blocking layer is provided by laminating or co-extruding a polymer film with one or more said paper layer or said adhesive layer.
19. A method in accordance with claim 11 , further including providing a barrier coating disposed between said paper layer and said paper layer.
20. A water degradable paper article with long-shelf-life adhesive backing, comprising:
a layer of water degradable paper;
a layer of water degradable adhesive;
a release liner on said adhesive layer;
a polyvinyl alcohol layer disposed between said adhesive layer and said paper layer that blocks adhesive from bleeding into said paper;
said polyvinyl alcohol layer comprising one of a film or a coating; and
wherein said article is one of an adhesive label or adhesive tape.
21. A degradable paper article with long-shelf-life adhesive backing, comprising:
a layer of degradable paper;
a layer of degradable adhesive;
a release liner on said adhesive layer;
a barrier coating between said paper layer and said adhesive layer;
a polyvinyl alcohol film disposed between said adhesive layer and said barrier coating that blocks adhesive from bleeding into said paper; and
wherein said article is one of an adhesive label or adhesive tape.
22. A degradable paper article with long-shelf-life adhesive backing, comprising:
a layer of degradable paper;
a layer of degradable adhesive;
a release liner on said adhesive layer;
a barrier coating between said paper layer and said adhesive layer;
a polyvinyl alcohol film disposed between said paper layer and said barrier coating that blocks adhesive from bleeding into said paper; and
wherein said article is one of an adhesive label or adhesive tape.