Method of forming an elastic laminate including a cross-linked elastic film
OwnerOomman P. Thomas, Jose Augusto Vidal de Siqueirainventors
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Abstract
A method of forming an elastic composite formed from a laminate that contains a cross-linked elastic film and a nonwoven facing is provided.
Claims20
A method of forming an elastic composite, the method comprising:
- extruding a thermoplastic composition directly onto a surface of a first nonwoven to form a first film, wherein the thermoplastic composition comprises a cross-linkable elastic polymer;
- allowing the first film to bond to the first nonwoven to form a laminate;
- cross-linking the cross-linkable elastic polymer;
- and
- thereafter joining the first film directly to a second facing, the second facing comprising a second nonwoven.
10 The method of claim 1, wherein the first film includes an elastic layer and a thermoplastic layer, wherein the thermoplastic layer is positioned between the first nonwoven and the elastic layer.
The method of claim 10, wherein the elastic layer comprises the cross-linkable elastic polymer.
12 The method of claim 1, wherein the first nonwoven facing includes a meltblown web.
An elastic composite comprising:
- a first laminate that contains a first nonwoven facing and an elastic film, wherein the nonwoven facing has a basis weight of about 45 grams per square meter or less and a peak load of about 350 grams-force per inch or less in the cross-machine direction;
- and
- a second laminate containing a second nonwoven facing and a thermoplastic film, wherein the first laminate and second laminate are joined together so that the elastic film is bonded and positioned adjacent to the thermoplastic film, and further wherein the elastic film is cross-linked by electromagnetic radiation and the first nonwoven facing has not been degraded by electromagnetic radiation.
17 The elastic composite of claim 15, wherein the first nonwoven facing is formed from a composition that contains a polyethylene polymer.
Dependencies are inferred from the claim text.