Water-flushable and biodegradable film useful as backsheets for disposable absorbent articles
    8.
    发明授权
    Water-flushable and biodegradable film useful as backsheets for disposable absorbent articles 失效
    可水洗和可生物降解的膜可用作一次性吸收制品的底片

    公开(公告)号:US06514602B1

    公开(公告)日:2003-02-04

    申请号:US09520676

    申请日:2000-03-07

    IPC分类号: B32B300

    摘要: A film which is water-flushable and biodegradable that is particularly useful as a backsheet for disposable absorbent articles, and in particular flushable interlabial catamenial products. The film comprises: (1) a relatively thin water-impervious biodegradable layer to maintain the integrity of the film during use and to minimize or prevent aqueous liquids from penetrating through the film; (2) a relatively thick substantially water-soluble layer adjacent the water-impervious layer to cause the film to lose integrity after the film is flushed; and (3) a relatively thin substantially water-permeable layer adjacent the water-soluble layer to control the rate at which water and other aqueous liquids contact, dissolve and disintegrate the water-soluble layer.

    摘要翻译: 一种可水洗和可生物降解的膜,其特别用作一次性吸收制品的底片,特别是可冲洗的阴唇间月经产品。 该膜包括:(1)相对薄的不透水的可生物降解层,以在使用过程中保持膜的完整性,并使水溶液最小化或防止渗透膜; (2)邻近不透水层的相当厚的基本上水溶性的层,以便在膜被冲洗后导致膜失去完整性; 和(3)与水溶性层相邻的相对薄的基本上透水的层,以控制水和其它含水液体接触的速度,溶解和分解水溶性层。