Nonwoven-film laminates
AssigneeKimberly-Clark Worldwide, Inc.
InventorSteven Ray Stopper
Life of this patent
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Abstract
There is provided herein a multilayer laminate comprised of a layer of a film and a layer of a nonwoven fabric. The film is made from polymers and has as one surface a semi-crystalline/amorphous or “heterophasic” polymer, an optional inner, less expensive, filler type polymer, and as the other surface, a polymer with a lower coefficient of friction. The nonwoven fabric may be a spunbond or meltblown fabric, preferably spunbond and preferably also including a heterophasic polymer. The film and nonwoven components are bonded together using thermal point bonding preferably while the film is stretched at least 5 percent. Such a laminate may be made into a personal care product like a diaper, training pant, absorbent underpants, adult incontinence product, and feminine hygiene product.
Claims15
A film/nonwoven laminate comprising:
- a first component which is a multi-layer film comprising a first surface layer of a heterophasic polymer and a second surface layer of a polymer having a lower coefficient of friction than said first surface layer, and said first component further comprising an interior layer between said surface layers comprising a polyolefin, wherein said interior layer contains opacity increasers;
- and
- a second component which is a nonwoven fabric having at least one layer, wherein said first and second components are bonded together by thermal point bonding and said laminate has a 180° peel strength of at least 120 grams.
A film/nonwoven laminate comprising:
- a first component which is a multi-layer film comprising a first surface layer of a heterophasic polymer and a second surface layer of a polymer having a lower coefficient of friction than said first surface layer;
- a second component which is a nonwoven fabric having at least one layer, wherein said first and second components are bonded together by thermal point bonding and said laminate has a 180 degree peel strength of at least 120 grams.
Dependencies are inferred from the claim text.