| abstract |
Provide a kind of elastic composite formed by lightweight nonwoven facings, described nonwoven facings has low-intensity in transverse machine (" CD ").Control the special parameter in the material that adopts in composite and forming method by selectivity, the present inventor finds, and such low-intensity and the facings of lightweight can be laminated to elastica easily, and can not destroy their integrity significantly.Such as, in one embodiment, the knot that elastica can have multilamellar is made, and comprises the elastomeric elastic layer adjacent with strengthened thermoplastic layer.The component of polymer of thermoplastic layer and thickness can be selected to give the extra intensity of film and integrity usually.Similarly, the component of polymer of elastic layer also can be selected, and has enough viscosity to adhere to facings to make film.Under specific circumstances, can it is desirable for and layer is positioned between two elastic layers, make intensity enhancing layer substantially can not contact nonwoven facings.Like this, strengthened layer can avoid substantial damage during laminating technology. |