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Pre-moistened wipes

  • US 7,470,656 B2
  • Filed: 03/07/2005
  • Issued: 12/30/2008
  • Est. Priority Date: 09/27/1999
  • Status: Expired due to Fees
First Claim
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1. A pre-moistened wipe for use on hard surfaces such as bathroom surfaces, glass surfaces, countertops, walls and floors, comprising:

  • a) a substrate,i) wherein the substrate comprises from about 0-35% by weight of hydrophilic fibers and from about 65-100% by weight of hydrophobic fibers, and from 0-25% by weight of a latex binder;

    ii) wherein the substrate has a basis weight of from about 30 to about 100 grams per square meter and comprises at least one low basis weight region and at least one high basis weight region, wherein each low basis weight region has a basis weight that is not more than about 80% of the basis weight of the high basis weight region; and

    iii) wherein the substrate comprises a pre-moistened outer layer, premoistened with a composition;

    one or more impermeable film or membrane layers; and

    a second outer layer, wherein the second outer layer is substantially dry and comprises absorbent hydrophilic fibers or a blend of cellulose and synthetic fibers;

    b) a composition,i) wherein the composition comprises from about 0.005% of a hydrophilic polymer, wherein the hydrophilic polymer reduces the contact angle and/or increases the surface hydrophilicity;

    ii) from about 0.5% to about 2% of a detergent surfactant, comprising an alkyl polysaccharide detergent surfactant; and

    iii) the balance comprising an aqueous solvent system, wherein said composition has a pH under usage conditions from about 2-12 and wherein the composition provides only negligible visible residue even when a surface treated with the composition is not rinsed or rubbed to dryness; and

    wherein the substrate is wetted with said composition at a level from about 1.5-15 g per gram of the dry weight substrate.

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