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US 5,843,057 AGranted
Film-nonwoven laminate containing an adhesively-reinforced stretch-thinned film
AssigneeKimberly-Clark Worldwide, Inc.
InventorAnn Louise McCormack
Life of this patent
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Abstract
The present invention is directed to film-nonwoven laminates incorporating stretch-thinned, breathable films onto which a pattern or network of adhesive areas is applied to improve durability and strength of the stretch-thinned film. The present invention has applicability in a wide variety of areas where strength, comfort, liquid impermeability and breathability are needed or desired, including without limitation, personal care absorbent articles, articles of clothing, roll goods and health care-related items.
Claims22
An adhesively-reinforced film-nonwoven laminate comprising:
- a first fibrous nonwoven layer having a surface;
- a film layer having a first surface;
- said film layer being oriented in a direction of stretching and having an effective gauge of 0.6 mil or less;
- said film layer being formed from a blend including, on a total weight percent basis based upon the total weight of the film layer, from about 30 percent to about 70 percent of a first polyolefin polymer, from about 70 percent to about 30 percent of a filler, and from about 0 to about 20 percent of a second polyolefin polymer;
- said film layer having a water vapor transmission rate of at least about 300 grams per square meter per 24 hours;
- a pattern of adhesive areas applied to said first surface of said film layer;
- said pattern of adhesive areas having an add-on amount of from about 0.1 to about 20 grams per square meter, a percent bond area of from about 5 percent to about 50 percent per unit area of said surface of said film layer, and a maximum spacing between adhesive areas in a direction generally parallel to said direction of stretching of about 1.0 inch or less;
- said surface of said fibrous nonwoven layer being adhered to said first surface of said film layer by said pattern of adhesive areas applied to said first surface of said film layer to form a laminate.
5 more elements
Dependencies are inferred from the claim text.