17-10-2013 дата публикации
Номер: US20130273338A1
Принадлежит:
A stretch composite having one or more elastomeric members disposed on at least one region of an extensible fibrous substrate to provide stretch properties to a targeted region of the substrate. The composite has been incrementally stretched to at least partially break up the structure of the substrate in order to reduce its resistance to stretch. The stretch composites are useful for disposable and durable articles, such as disposable absorbent articles including diapers, pull-on diapers, training pants, incontinence briefs, catamenial garments, baby bibs, and the like, and durable articles like garments including sportswear, outerwear and the like. Also disclosed are methods of forming such stretch composites. 1. A stretch composite comprising:an extensible first substrate having one or more first thermoplastic elastomeric members disposed on at least a portion of the substrate to form a first elasticized region, [{'br': None, 'sub': y', 'x', 'n-1', 'y, 'R′-L-(Q-L)-Q-L-R; \u2003\u2003(I)'}, {'br': None, 'sub': y', 'x', 'n, 'R′-L-(Q-L)-R; \u2003\u2003(II)'}, {'br': None, 'sub': x', 'n, 'R′-(Q-L)-R; \u2003\u2003(III)'}, {'br': None, 'sub': x', 'n-1', 'y, 'R′-(Q-L)-Q-LR; \u2003\u2003(IV)'}, {'br': None, 'sub': x', 'n-1, 'R′-(Q-L)-Q-R; or \u2003\u2003(V)'}, 'a mixture thereof;, 'wherein the first thermoplastic elastomeric member comprises a thermoplastic elastomer and a phase change solvent having the general formula{'sub': 2', '3', '1', '1', '2', '3', '3', '4', '1', '30', '1', '2', '3', '4', '1', '30, 'wherein Q is a para-ring substituted difunctional aromatic moiety, and wherein the substitutions are in the 1,4 positions; L is CH; R and R′ are the same or different and are independently selected from H, CH, COOH, CONHR, CONRR, NHR, NRR, hydroxy, or C-Calkoxy; wherein R, R, Rand Rare the same or different and are independently selected from H or linear or branched alkyl from C-C; x is an integer from 1 to 30; y is an integer from 1 to 30; and n is an integer from 1 ...
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