Stretch laminate, method of making, and absorbent article
AssigneeThe Procter & Gamble Company
InventorTodd Leon Mansfield
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Abstract
A stretch laminate includes a first layer including an elastomer film, the first layer having a surface, and a second layer including a nonwoven material, the second layer having a surface that is attached to the surface of the first layer. The tensile behavior in the transverse direction of the stretch laminate is within about 2.5 N/cm of the tensile behavior in the transverse direction of the film at an engineering strain of about 1.5, and exists independent of mechanical activation. A method of making the stretch laminate and an absorbent article having at least one region defined by the stretch laminate are also provided.
Claims20
A stretch laminate comprising:
- (a) a first layer comprising an elastomer film, the first layer having a surface;
- (b) a second layer comprising a nonwoven material, the second layer having a surface that is attached to the surface of the first layer;
- and
- (c) a third layer comprising a nonwoven material, the third layer having a surface that is attached to the first layer on a surface opposite the second layer;
- wherein the first, second and third layers are bonded together by an attachment mechanism selected from the group of heat bonding, pressure bonding, ultrasonic bonding, dynamic mechanical bonding, and combinations thereof;
- and
- wherein the tensile behavior in the transverse direction of the stretch laminate is within about 2.5 N/cm of the tensile behavior in the transverse direction of the film at an engineering strain of about 1.5, and exists independent of mechanical activation of the stretch laminate.
A method of making a stretch laminate, the method consisting essentially of:
- (a) providing an elastomer film;
- (b) attaching a first nonwoven layer to the elastomer film;
- and
- (c) attaching a second nonwoven layer to the elastomer film, the second layer being attached to the elastomer film on a surface opposite the first nonwoven layer;
- wherein the attaching steps are accomplished via an attachment mechanism selected from the group of heat bonding, pressure bonding, ultrasonic bonding, dynamic mechanical bonding and combinations thereof;
- and
- wherein the tensile behavior in the transverse direction of the stretch laminate so made is within about 2.5 N/cm of the tensile behavior in the transverse direction of the film at an engineering strain of about 1, and exists independent of mechanical activation of the stretch laminate.
A stretch laminate comprising:
- (a) a first layer comprising an elastomer film, the first layer having a surface;
- (b) a second layer comprising a nonwoven material, the second layer having a surface that is attached to the surface of the first layer;
- and
- (c) a third layer comprising a nonwoven material, the third layer having a surface that is attached to the first layer on a surface opposite the second layer;
- wherein the first, second and third layers are bonded together by an attachment mechanism selected from the group consisting of heat bonding, pressure bonding, ultrasonic bonding, dynamic mechanical bonding and combinations thereof;
- and wherein the tensile behavior in the transverse direction of the stretch laminate is within about 2.5 N/cm of the tensile behavior in the transverse direction of the film at an engineering strain of about 1, and exists independent of mechanical activation of the stretch laminate.
Dependencies are inferred from the claim text.