B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
154/140, 210/6,
B32B 23/08 (2006.01) B32B 27/30 (2006.01) B32B 33/00 (2006.01) C11D 1/00 (2006.01) C11D 17/00 (2006.01) C11D 17/04 (2006.01) C11D 17/06 (2006.01)
Patent
CA 1280063
ABSTRACT OF THE DISCLOSURE A polymeric film for the rinse release of wash additives comprises an outer film layer of a hydroxybutylmethylcellulose (HBMC)/hydroxypropylmethycellulose (HPMC) blend. An inner film layer is a PVA film having a metalloid oxide cross-linking agent present in an amount sufficient to cause the PVA film to gel in a pH of below about 9Ø Both film layers include a plasticizer and may include a surfactant. The film can be used as a seal for an insoluble container, or made into a water-soluble pouch. Optionally, either a third film layer of the HBMC/HPMC blend, or a nonwoven fabric layer may be included for greater durability. The films remain intact during normal wash cycles and over a range of typical water temperatures, then rapidly dissolve in the rinse.
557184
Choy Clement K.
Ogar George W. Jr.
Choy Clement K.
Ogar George W. Jr.
Riches Mckenzie & Herbert Llp
The Clorox Company
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