Birch, Stewart, Kolasch & Birch, LLP
Article for use in washing in sheet form
The present invention provides a laundry detergent sheet with significant improvements in solubility. That is, the invention provides a sheet of laundry detergent comprising a layer containing a detergent composition and a water-soluble substrate provided on both sides of the layer, wherein said layer comprises a water-soluble or disintegrating-in-water particle group, having an average particle diameter of 60 to 2000 &mgr;m, consisting of a particle group. The water-soluble or disintegrating-in-water particle group means less than 0.025 g of residue on a screen after 0.5 g of the particle group is introduced into 1 L water at 10&deg; C., stirred at a revolution rate of 800 rpm for 10 minutes, and sifted through a screen of 200 mesh size.
Kao Corporation
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inventional inventional inventional
Nobuyoshi Hirohiko Hiroyuki Hiroyuki Kazutoshi Hiromitsu
Yamaguchi Hanada Yamashita Saijo Ide Hayashi