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| High gloss label face stock |
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| Method of applying a protein coating to a substrate and article thereof |
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| Spinning process |
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| Apparatus and method for forming fiber reinforced composite articles |
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| Cone dispensing package, assembly and method |
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| Easy-to-open synthetic resin bag and apparatus for the manufacture thereof |
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Elastic film laminates
| Details |
Inventors: Abuto, Frank Paul; Haffner, William Bela; Jordan, Joy Francine; McCormack, Ann Louise; Uitenbroek, Duane Girard;
Assignee: Kimberly-Clark Worldwide, Inc. (Neenah, WI)
Primary Examiner: Cole; Elizabeth M.
Assistant Examiner:
Attorney, Agent or Firm: Tulley, Jr.; Douglas H.
An elastic liquid impermeable laminate is disclosed having an extensible barrier film; an 8 g/m.sup.2 to 100 g/m.sup.2 elastomeric nonwoven web comprising fibers of low density polyethylene having a density less than 0.89 g/cm.sup.3 ; and an extensible cloth-like outer layer, such as a nonwoven web of spunbonded fibers. The barrier laminate can be laminated by thermal point bonding to create patterns having improved loft, excellent hand and while achieving peel strengths in excess of 500 grams. |
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DETAILED DESCRIPTION The aforesaid needs are fulfilled and the problems experienced by those skilled in the art overcome by an elastic laminate of the present invention comprising an extensible base film, an elastic intermediate nonwoven web and an extensible outer fibrous material bonded thereto.
The first side of the elastomeric intermediate web is bonded to the base film and the second side is bonded to the outer fibrous material.
In a further aspect, the elastomeric intermediate web comprises an amorphous polymer.
As an example the amorphous polymer can comprise a low density ethylene elastomer component which comprises a copolymer of ethylene and an alpha-olefin.
In a further aspect, the low density polyethylene elastomer desirably has a density between about 0.
86 g/cm.
sup.
3 and about 0.
89 g/cm.
sup.
3.
In addition, the amorphous polymer can comprise a blend having a second polyolefin polymer, such as a second ethylene polymer having a higher density.
Desirably the low density polyethylene elastomer comprises at least about 50 weight % of the fiber.
The elastic intermediate web desirably comprises a nonwoven web such as a web of meltblown fibers.
The extensible base film can comprise an elastic film and desirably comprises a breathable film.
In one aspect of the present invention, the film may comprise an elastic breathable barrier such as, for example, a stretched filled-film comprising an elastomeric polyethylene polymer and a filler.
The base film, elastic intermediate web and outer fibrous material preferably have a collective basis weight less than about 100 g/m.
sup.
2.
The outer fibrous material layer can comprise a thermoplastic nonwoven fabric.
Desirably the outer nonwoven layer comprises a cloth-like fabric, having excellent hand and drape.
In one aspect of the invention, the outer nonwoven layer comprises a necked or reversibly necked nonwoven web.
The laminate of the present invention desirably has a peel strength in excess of 200 g/cm.
sup.
2 and even more desirably in excess of 500 g/cm
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Manufacturing Materials 
