Article with tackifier-free adhesive

摘要

Disposable absorbent articles assembled from a collection of components using an adhesive comprising an amorphous polyolefin composition and a heterophase polyolefin composition comprising amorphous character and crystalline blocks.

主权项

1. A disposable absorbent article having a longitudinal centerline and a lateral centerline, a front waist region with a front waist edge, a rear waist region with a rear waist edge, a crotch region disposed between said front and rear waist regions and two spaced apart longitudinal side edges joining said front waist edge to said rear waist edge and comprising an assembly of components including:
a) a topsheet; b) a backsheet underlying said topsheet; c) an absorbent core disposed between said topsheet and said backsheet, wherein said absorbent core comprises at least one of a core cover, a dusting layer, an acquisition layer, a distribution layer and a storage member; d) at least one additional component selected from the group consisting of:
i) a fastening system for joining said front waist region to said rear waist region when said absorbent article is worn;ii) barrier cuffs lying adjacent and inboard one of said longitudinal side edges;iii) gasketing cuffs lying between said longitudinal side edge and said barrier cuff;iv) front ears disposed in said front waist region;v) back ears disposed in said rear waist region; andvi) a receiving member; and e) a hot melt adhesive composition suitable for joining at least two absorbent article components together, wherein said adhesive consists essentially of:
(i) about 90 to 10 wt.% of an amorphous polyolefin copolymer composition comprising 50 to 70 wt.% 1-butene;(ii) about 10 to 90 wt.% of a heterophase polypropylene copolymer composition comprising propene and a comonomer comprising ethylene, 1-hexene or 1-octene and comprising amorphous character and crystalline blocks; and(iii) about 0.1 to 30 wt.% of a polyisobutylene plasticizer made with an A1C13.