Method of selectively elasticating a moving web and an article comprising the elasticated web

摘要

A method for producing an elasticated chassis web for use as a continuous and coherent layer in a disposable garment, including attaching continuous elastic elements (10,11) to a continuous base web (1) along regularly undulating wave-shaped curves (12,13) and cutting out pieces (21) in crotch segments (4) of the continuous base web (1) in order to remove selected parts of the elastic elements (10,11) from the base web (1). A disposable garment made from the elasticated chassis web includes a chassis layer (56) having a hole (69) in a garment crotch portion (43).

主权项

1. A method for producing an elasticated chassis web for use as a continuous and coherent layer in a disposable pant garment, the method comprising:
a) feeding a continuous base web along a production path in a machine direction, the continuous base web having a cross machine direction, transverse to the machine direction, and parallel side edges in the machine direction and having leg edge segments and crotch segments extending in the cross machine direction, and alternating in the machine direction; b) stretching first and second continuous elastic elements; c) feeding said first and second continuous elastic elements in said machine direction, along first and second regularly undulating wave-shaped curves, said curves having equal wave length, and having wave crests directed towards said side edges of said continuous base web and wave troughs directed away from said side edges of said continuous base web, said wave crests and wave troughs of said first wave-shaped curve being in register with said wave crests and wave troughs of said second wave-shaped curve with said elastic elements being at a maximum distance from each other within said leg edge portions of said continuous base web and with said elastic elements being at a minimum distance from each other within said crotch segments of said continuous base web; d) attaching said first and second stretched elastic elements to said continuous base web along said first and second regularly undulating wave-shaped curves in said leg edge segments and said crotch segments; wherein the further steps of: e) forming crotch cut-out pieces of said continuous base web in said crotch segments, f) simultaneously forming cut-off crotch segments of said stretched elastic elements being attached to said cut-out pieces of said continuous base web; g) creating holes in said crotch segments of said continuous base web by removing said crotch cut-out pieces from said continuous base web together with said cut-off crotch elastic segments; and h) covering said holes in said continuous base web by a supplementary crotch material and attaching said supplementary crotch material to an inner, wearer-facing side of said base web after cutting out and removing said crotch cut-out pieces, such that said supplementary crotch material is exposed through said holes in said continuous base web.