Method for production of disposable absorbent articles

摘要

A method for production of disposable hygienic absorbent articles (12) in which each article has a substantially homogenous elastic laminate web (14) having a maximum elastic extensibility in a first direction of at least 40%, preferably at least 60%, and most preferably at least 80%, under a peak load Fp, and an absorbent core (16) attached to the elastic laminate web. The method including the steps of providing a continuous length of the elastic laminate web (14); advancing the continuous length of the elastic laminate web in a direction of travel (A) corresponding to the first direction; attaching individual absorbent cores (16) to the continuous length of the elastic laminate web at spaced intervals, and forming individual articles (12) from the thus assembled individual absorbent cores and the continuous length of said elastic laminate web. The continuous length of the elastic laminate web (14) is maintained under a tensioning load Ft in the direction of travel during the advancing, with the tensioning load Ft satisfying the condition: 0.03 Fp≦Ft≦0.25 Fp.

主权项

1. A method for production of disposable pant diapers, the method comprising:
providing a continuous length of a substantially homogeneous elastic laminate web having a maximum elastic extensibility in a first direction of at least 40% under a peak load Fp; advancing said continuous length of said elastic laminate web in said first direction and attaching individual absorbent cores to said continuous length of said elastic laminate web at spaced intervals, while maintaining said continuous length of said substantially homogeneous elastic laminate web under a tensioning load Ft in said first direction during said advancing; folding said substantially homogeneous elastic laminate web with the individual absorbent cores attached thereto onto itself to form a fold edge and an open edge of the pant diapers; maintaining said continuous length of said substantially homogeneous elastic laminate web under the tensioning load Ft in said first direction during said folding, said tensioning load Ft satisfying the condition: 0.03 Fp≦Ft≦0.25 Fp, and welding the substantially homogeneous elastic laminate web to define weld lines intermittently transverse to the first direction and severing the individual pant diapers along the weld lines; wherein: said substantially homogenous elastic laminate web includes two layers having respective levels of elasticity different from one another, and said substantially homogenous elastic laminate web exhibits a non-linear load-strain curve relationship.