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US 5,932,497 AGranted
Breathable elastic film and laminate
AssigneeKimberly-Clark Worldwide, Inc.
InventorsMichael Tod Morman, Cindy Janja Milicevic
Life of this patent
Estimating the term…
Abstract
A soft, breathable elastic laminate of an elastic film loaded with a filler having a particle size suitable for pore formation and stretched in at least two directions to form a plurality of micropores bonded to a nonwoven web. In accordance with one embodiment, the elastic film is water vapor impermeable prior to being stretched.
Claims63
A soft breathable elastic laminate comprising:
- a substantially water vapor impermeable elastic film loaded with a filler having a particle size suitable for pore formation, said film having a basis weight of at least about 42 gsm and having been stretched in at least two directions to form a plurality of micropores;
- and
- a nonwoven web bonded to said elastic film after stretching of said elastic film in at least one of said directions.
A soft, breathable elastic laminate comprising:
- a substantially water vapor impermeable elastic film loaded with a filler having a particle size suitable for pore formation, said film having been stretched in at least two directions to form a plurality of micropores;
- and
- a nonwoven web bonded to said elastic film after stretching of said elastic film in at least one of said directions.
A diaper outercover comprising:
- a substantially water vapor impermeable elastic film loaded with a filler having a particle size suitable for pore formation and stretched in at least two directions to form a plurality of micropores;
- and
- a nonwoven web bonded to said elastic film after stretching of said elastic film in at least one of said directions.
A surgical gown comprising:
- a substantially water vapor impermeable elastic film loaded with a filler having a particle size suitable for pore formation and stretched in at least two directions to form a plurality of micropores;
- and
- a nonwoven web bonded to said elastic film after stretching of said elastic film in at least one of said directions.
A breathable elastic film comprising:
- a substantially water vapor impermeable elastic film loaded with a filler having a particle size suitable for pore formation and stretched in at least two directions to form a plurality of micropores.
A process for producing a soft, breathable elastic laminate comprising the steps of:
- stretching a substantially water vapor impermeable elastic film loaded with a filler having a particle size suitable for pore formation in at least two directions so as to form a plurality of micropores;
- and
- bonding a nonwoven web to said stretched elastic film, forming a laminate.
A process for producing a breathable elastomeric film comprising the steps of:
- stretching a substantially water vapor impermeable elastic film loaded with a filler having a particle size suitable for pore formation in at least two directions so as to form a plurality of micropores.
A soft, breathable elastic laminate comprising:
- a substantially water vapor impermeable elastic film loaded with a filler having a particle size suitable for pore formation, said film having been stretched in at least two directions to form a plurality of micropores;
- and
- a neckable nonwoven web bonded to said elastic film after stretching of said elastic film in at least one of said directions.
A soft, breathable elastic laminate comprising:
- a substantially water vapor impermeable elastic film loaded with a filler having a particle size suitable for pore formation, said film having been stretched in at least two directions to form a plurality of micropores;
- and
- a necked nonwoven web bonded to said elastic film after stretching of said elastic film in at least one of said directions.
A soft, breathable elastic laminate comprising:
- a substantially water vapor impermeable elastic film loaded with a filler having a particle size suitable for pore formation, said film having been stretched in at least two directions to form a plurality of micropores;
- and
- a necked spunbond bonded to said elastic film after stretching of said elastic film in said at least two directions.
A soft, breathable elastic laminate comprising:
- a substantially water vapor impermeable elastic film loaded with a filler having a particle size suitable for pore formation, said film having been stretched in at least two directions to form a plurality of micropores;
- and
- a necked spunbond bonded to said elastic film, whereby said film is stretched in a machine direction and said necked spunbond is bonded to said film after said stretching in said machine direction, forming said laminate, and said laminate is stretched in a cross-machine direction.
A soft, breathable elastic laminate comprising:
- a substantially water vapor impermeable elastic film loaded with a filler having a particle size suitable for pore formation, said film having been stretched in a machine direction and a cross-machine direction to form a plurality of micropores;
- and
- a spunbond bonded to said elastic film while said elastic film is stretched in said machine direction.
A soft, breathable elastic laminate comprising:
- a substantially water vapor impermeable elastic film loaded with a filler having a particle size suitable for pore formation, said film having been stretched in a machine direction and a cross-machine direction to form a plurality of micropores;
- and
- a spunbond bonded to said elastic film while said elastic film is stretched in said machine direction and said cross-machine direction.
A soft, breathable elastic laminate comprising:
- a substantially water vapor impermeable elastic film loaded with a filler having a particle size suitable for pore formation, said film having been stretched in a machine direction and a cross-machine direction to form a plurality of micropores;
- and
- a necked spunbond bonded to said elastic film while said elastic film is stretched in said machine direction.
A breathable elastic film comprising:
- an elastic film loaded with a filler having a particle size suitable for pore formation and stretched in at least two directions to form a plurality of micropores.
Dependencies are inferred from the claim text.