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US 2021/0316919 A1Published application
Recyclable sachets
AssigneeThe Procter & Gamble Company
InventorsMartin Ian James, Gary Wayne Gilbertson, John Moncrief Layman, Susan Nicole Lloyd, Emily Charlotte Boswell, Patti Jean Kellett, Stefano Bartolucci
Life of this patent
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Abstract
Sachets composed of metal barrier layers that can include both a sealant and an external protective coating material. The sealant provides heat sealing, and product formulation protection properties, while the barrier material functions to reduce the moisture vapor transmission rate (MVTR) into or out of the sachet.
Claims15
A package comprising:
- (a) a biodegradable sealant having a thickness of about 5 μm to about 100 μm;
- (b) a barrier material selected from the group consisting of a metal or metal alloy coated with the sealant, wherein the barrier material has a thickness of about 7 um to about 100 μm and a surface that has an energy of at least about 38 dynes per centimeter (dyne/cm), or that is treatable to an energy of at least about 38 dyne/cm;
- and,
- (c) biodegradable ink deposited on the barrier material, and having a thickness of about 0.5 μm to about 20 μm;
- (d) a biodegradable protective layer on the outside of the package having a thickness of about Sum to 25 μm;
- wherein the package has a moisture vapor transmission rate (MVTR) of less than about 10 grams per square meter per day (g/m2/day) at 37° C. and 90% relative humidity (RH);
- wherein the package has a shelf life of at least about one year when containing a liquid consumer product;
- wherein the sealant layer of the package, within two years after first and continuous exposure to water and sealant-degrading microorganisms, disintegrates into pieces sufficiently small to pass through a one millimeter sieve, and,
- wherein the package, if collected, can be recycled using existing aluminum recycling streams.
6 more elements
A package comprising:
- (a) a layer comprising a mixture of:
- (i) a biodegradable sealant, and
- (ii) a barrier material selected from the group consisting of metal or metal alloy,
- wherein the layer has a thickness of about 5 μm to about 100 μm, and a surface that has an energy of at least about 38 (dyne/cm), or that is treatable to an energy of at least about 38 dyne/cm;
- and,
- (b) ink deposited on the layer, and having a thickness of about 1 μm to about 20 μm;
- wherein the package has a moisture vapor transmission rate (MVTR) of less than about 10 g/m2/day at 37 C, and 90% RH;
- and
- wherein the package has a shelf life of at least about one year when containing a liquid consumer product;
- and, wherein the biodegradable layers of the package, within two years after first and continuous exposure to water and sealant-degrading microorganisms, disintegrates into pieces sufficiently small to pass through a one millimeter sieve.
7 more elements
Dependencies are inferred from the claim text.