Single sided stretch bonded laminates, and methods of making same

US8043984B2 · kind B2 · utility

Assignee

• Kimberly-Clark Worldwide, Inc. · US

Inventors

• Bryan Stadelman · Alpharetta, US
• Braulio Polanco · Roswell, US
• Joerg Hendrix · Alpharetta, US
• Peter Kobylivker · Marietta, US
• Peiguang Zhou · Appleton, US
• Bryon Day · Canton, US
• Wing-Chak Ng · Suwanee, US
• Steven R. Stopper · Suwanee, US

Key dates

• Filing date: Dec 14, 2004
• Grant date: Oct 25, 2011
• Expiry date: Dec 25, 2028

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T442/681
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

An elastic laminate capable of being rolled for storage and unwound from a roll when needed for use, includes an elastic layer of an array of continuous filament strands with meltblown deposited on the continuous filament strands, and a facing layer bonded to only one side of the elastic layer. The meltblown layer may include an elastic polyolefin-based meltblown polymer having a degree of crystallinity between about 3% and about 40%. The laminate suitably has an inter-layer peel strength of less than about 70 grams per 3 inches cross-directional width at a strain rate of 300 mm/min. Alternatively or additionally, the continuous filament strands and/or the facing layer may include an elastic polyolefin-based meltblown polymer having a degree of crystallinity between about 3% and about 40%. In certain embodiments, the elastic laminate may include an extensible facing layer bonded to an elastic or semi-elastic film layer having a basis weight of about 50 gsm or less, wherein the facing layer includes an elastic polyolefin-based polymer having a degree of crystallinity between about 3% and about 40%.