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US 2015/0307264 A1Published application
Bag made from a foamed film laminate
AssigneeThe Procter & Gamble Company
InventorsEmily Charlotte BOSWELL, Zun CHEN, Jesse Qian FENG, Pradeep Kumar PANDEY, Shizhen ZHAO, Jing ZHANG
Life of this patent
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Abstract
Laminates having a foamed polyethylene layer reduces material costs but yet can be used to make user-acceptable bags and other containers to hold consumable products (such as a dry laundry detergent) that withstand the rigors of manufacturing and transporting.
Claims20
A container comprising a laminate comprising:
- (a) a multi-layered co-extruded film comprising:
- (i) from 5 microns to 50 microns thick of a first layer of a non-foamed polyethylene;
- (ii) from 10 microns to 90 microns thick of a foamed polyethylene layer having a Mean Void Volume Percentage from 19% to 60%;
- (iii) from 5 microns to 50 microns thick of a second layer of a non-foamed polyethylene, wherein the foamed polyethylene layer is in-between the first and second non-foamed polyethylene layers;
- and
- (b) a printed thermoplastic polymer layer comprising a polyethylene terephthalate,
- wherein the printed thermoplastic polymer layer is 3 microns to 25 microns thick, wherein the printed thermoplastic polymer layer is attached to said multi-layered co-extruded film, and wherein the printed thermoplastic polymer layer defines an outermost surface of the container.
4 more elements
A dry laundry detergent bag containing from 0.75 kg to 3 kg of dry laundry detergent, wherein the bag is constructed from a laminate comprises:
- (a) a multi-layered co-extruded film comprising:
- (i) from 20 microns to 30 microns thick of a first layer of non-foamed polyethylene;
- (ii) from 40 microns to 60 microns thick of a middle layer of foamed polyethylene having a Mean Void Volume Percentage from 30% to 50%;
- (iii) from 20 microns to 30 microns thick of a second layer of non-foamed polyethylene, wherein the middle layer of foamed polyethylene is in-between the first and second layers of non-foamed polyethylene;
- and
- (b) from 5 microns to 15 microns thick of a reverse printed polyethylene terephthalate, adhered to said multi-layered co-extruded polyethylene layer, and wherein the reverse printed polyethylene terephthalate defines an outermost surface of the bag;
- and
- wherein the total thickness of the laminate is from 85 microns to 135 microns.
5 more elements
A method of making a closed bag of product comprising the steps:
- (a) forming an opened pillow bag by heat sealing a single sheet of laminate, wherein the laminate comprises:
- (A) a multi-layered co-extruded film comprising:
- (i) from 5 microns to 50 microns thick of a first layer of non-foamed polyethylene;
- (ii) from 10 microns to 90 microns thick of a middle foamed polyethylene layer having a Mean Void Volume Percentage from 30% to 50%;
- (iii) from 5 microns to 50 microns thick of a second layer of non-foamed polyethylene, wherein the middle foamed polyethylene layer is in-between the first and second layers of non-foamed polyethylene;
- and
- (B) a reverse printed thermoplastic polymer layer, wherein the thermoplastic polymer comprises a polyethylene terephthalate, wherein the printed thermoplastic polymer layer is 3 microns to 25 microns thick, wherein the thermoplastic polymer layer is attached to said multi-layered co-extruded film;
- and
- wherein thickness of the laminate is from 63 microns to 185 microns;
- (b) filling the opened pillow bag with dry laundry detergent;
- (c) heat sealing the opening of the filled pillow bag to form the closed bag of product.
8 more elements
Dependencies are inferred from the claim text.