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US 2011/0092869 A1Published application
Articles having zoned breathability
AssigneeE. I. Du Pont de Nemours and Company
InventorsJohn Chu Chen, Donna Lynn Visioli
Life of this patent
Estimating the term…
Abstract
Articles having zoned breathability such as personal hygiene articles are provided having controlled regional breathability with high MVTR regions and low MVTR regions. The zoned breathability articles comprise organic acid-modified ionomer resins.
Claims11
An article comprising at least one first region and at least one second region wherein
- the article is diaper, training pants, absorbent underpants, adult incontinence product, feminine hygiene product, an infection control product including surgical gowns and drapes, face masks, head coverings, footwear, wipers, patient bedding, stretcher and bassinet sheets, wound dressing, bandage, sterilization wrap, table cloth, picnic area, tent, tarpaulin, garment, floor covering, or a protective cover for an article selected from the group consisting of a vehicle, equipment often left outdoors, and lawn furniture;
- the organic acid-modified ionomer comprises, or is produced from, one or more E/X/Y copolymers and an organic acid or salt thereof;
- E represents copolymerized units of ethylene, X represents copolymerized units of at least one C3-C8 α,β-ethylenically unsaturated carboxylic acid, and Y represents copolymerized units of a softening comonomer, or ionomers of the E/X/Y copolymers, wherein X is from about 3 to 35 weight % of the E/X/Y copolymer, and Y is from 0 to about 35 weight % of the E/X/Y copolymer;
- at least 60% of the acid moieties in the E/X/Y copolymer and organic acid are neutralized with an alkali metal;
- the first region has a moisture vapor transmission rate (MVTR), measured according to ASTM F2298, of at least 800 g/m2 /24 hours;
- and
- the second has a MVTR that is at least 15% less than the MVTR of the first region.
4 more elements
Dependencies are inferred from the claim text.