Microporous stretch thinned film/nonwoven laminates and limited use or disposable product applications

Breathable laminates of a film and nonwoven with increased toughness and the ability to undergo strain without splitting for applications as components of personal care products and other uses. The film is formed using a carrier/letdown resin approach where the filled carrier resin is an ethylene po...

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Bibliographic Details
Main Authors MCCORMACK ANN LOUISE, PALMER RANDALL JAMES, SHEA COURTNEY EILEEN
Format Patent
LanguageEnglish
Published 24.02.2005
Edition7
Subjects
GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC
GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS
LAYERED PRODUCTS
LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
PERFORMING OPERATIONS
TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
TECHNICAL SUBJECTS COVERED BY FORMER USPC
TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
TRANSPORTING
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Summary:Breathable laminates of a film and nonwoven with increased toughness and the ability to undergo strain without splitting for applications as components of personal care products and other uses. The film is formed using a carrier/letdown resin approach where the filled carrier resin is an ethylene polymer or copolymer having a density at least 0.003 g/cc higher than the letdown resin which is also an ethylene copolymer but has a density in the range of less than about 0.915 g/cc and a melt index less than about 6. The resin phases may be dry blended, formed into a film, stretched and bonded to a nonwoven support layer.
Bibliography:Application Number: US20030646979