Method of bonding an adhesive to foam
First Claim
1. A method of bonding a garment adhesive to a closed-cell, non-crosslinked, liquid-impermeable, polyolefinic foam layer, said foam having less than about 3% aging modifier, as measured by an amount of extractable oxygen, said method comprising:
- (a) applying said garment adhesive to a surface of a substrate; and
(b) bringing said adhesive surface of said substrate into contact with said polyolefinic foam, wherein said adhesive has a viscosity of less than about 8×
108 centipoise.
2 Assignments
0 Petitions
Accused Products
Abstract
A method is provided for bonding an adhesive to a polyolefin foam, and preferably a non-crosslinked polyethylene foam. The foam is useful as a liquid-impervious backing in a disposable absorbent article, such as a panty liner, a sanitary napkin, a diaper, a adult incontinent garment, a training pant, and the like. The adhesive is applied to a substrate which is then brought into intimate contact with one side of the foam'"'"'s surface. Optionally, heat and pressure may be applied to enhance bonding.
65 Citations
23 Claims
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1. A method of bonding a garment adhesive to a closed-cell, non-crosslinked, liquid-impermeable, polyolefinic foam layer, said foam having less than about 3% aging modifier, as measured by an amount of extractable oxygen, said method comprising:
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(a) applying said garment adhesive to a surface of a substrate; and (b) bringing said adhesive surface of said substrate into contact with said polyolefinic foam, wherein said adhesive has a viscosity of less than about 8×
108 centipoise. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of bonding a garment adhesive to a closed-cell, non-crosslinked, liquid-impermeable, polyolefinic foam baffle in an absorbent article, said method comprising:
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(a) applying said adhesive to a surface of a substrate; (b) brining said adhesive surface of said substrate into contact with said foam baffle bringing said adhesive surface of said substrate into contact with said foam baffle, said foam having a density ranging from about 0.0225 gm/cm3 to about 0.0962 gm/cm3 ; and (c) heating said adhesive to a temperature ranging from about 140°
F. (60°
C.) to about 330°
F. (165.5°
C.). - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification