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US 6,838,403 B2Granted
Breathable, biodegradable/compostable laminates
AssigneeKimberly-Clark Worldwide, Inc.
InventorsFu-Jya Daniel Tsai, Bridget A. Balogh
Life of this patent
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Abstract
A breathable, biodegradable/compostable laminate for use in personal care products. The laminates may be produced from polymer blends. The biodegradable/compostable laminates may be used in a disposable absorbent product intended for the absorption of fluids such as body fluids.
Claims14
A breathable, biodegradable/compostable laminate material comprising:
- a. a biodegradable nonwoven material selected from the group comprising aliphatic polyesters;
- polylactides;
- polyhydroxybutyrate-co-valerates;
- sulfonated polyethylene terephthalates;
- blends or mixtures thereof;
- and
- b. a filled, biodegradable film stretched from about 100 to about 500 percent of its original length and selected from the group consisting of aliphatic polyesters;
- polylactides;
- polyhydroxybutyrate-co-valerates;
- sulfonated polyethylene terephthalates;
- and blends or mixtures thereof;
- wherein the breathable, biodegradable/compostable laminate material has a water vapor transmission rate that is greater than about 3000 g/m2/24 hr.
9 more elements
A method of making a breathable, biodegradable/compostable laminate material comprising:
- stretching a filled, biodegradable film to form the breathable, biodegradable/compostable laminate material from about 100 to about 500 percent of its original length;
- and,
- subsequently laminating a biodegradable nonwoven material selected from the group consisting of aliphatic polyesters;
- polylactides;
- polyhydroxybutyrate-co-valerates;
- sulfonated polyethylene terephthalates;
- and blends or mixtures thereof and the filled, biodegradable film to form the breathable, biodegradable/compostable laminate material;
- wherein the breathable, biodegradable/compostable laminate material has a water vapor transmission rate that is greater than about 3000 g/m2/24 hr.
5 more elements
Dependencies are inferred from the claim text.