Nonwoven-elastomeric laminate with improved bonding between...

A - Human Necessities – 61 – F

Patent

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Details

A61F 13/56 (2006.01) B32B 5/04 (2006.01) B32B 25/04 (2006.01) B32B 27/12 (2006.01)

Patent

CA 2572583

In one embodiment, the present invention relates to an extrusion bonded laminate (202) including an elastomeric film (206) directly bonded to at least one nonwoven web layer (214, 218) substantially continuously over at least a major portion of the laminate (202), in which the laminate (202) is extensible in at least one direction, and in which the elastomeric film (206) includes a vinyl arene-containing block copolymer, and in which the elastomeric film (206) is substantially free of a tackifying amount of a tackifier, and to a process for producing an extrusion bonded laminate (202). In one embodiment, the total vinyl arene content of the elastomeric film (206) is about 30 % or less. The extrusion bonded laminate (202) is useful, for example, in a diaper tab.

Dans un mode de réalisation, la présente invention concerne un stratifié lié par extrusion (202) y compris une pellicule élastomère (206) directement liée à au moins une couche de voile non tissé (214, 218) sensiblement de manière continue sur au moins une portion majeure du stratifié (202), lequel stratifié (202) est extensible du moins dans une direction, et où la pellicule élastomère (206) inclut un copolymère séquencé contenant une arène de vinyle et où la pellicule élastomère (206) est sensiblement dépourvue d~une quantité donnant du collant d~un agent poisseux, et concerne un procédé pour la fabrication d~un stratifié lié par extrusion (202). Dans un mode de réalisation, la teneur totale en arène de vinyle de la pellicule élastomère (206) est d~environ 30 % ou moins. Le stratifié lié par extrusion (202) est utile, par exemple, en tant que languette de couche.

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