Cleaning sheet

• US 20050268419A1
• Filed: 05/20/2005
• Published: 12/08/2005
• Est. Priority Date: 06/03/2004
• Status: Active Grant

• Current Assignee: Unicharm Corporation
• Original Assignee: Unicharm Corporation
• Inventors: Tanaka, Yoshinori
• Granted Patent: US 7,735,180 B2
• Time in Patent Office: Days
• US Class Current: 15/209.100
• CPC Class Codes: A47L 13/20 Mops
• CPC Class Codes: A47L 13/256 for mops made of cloth
• CPC Class Codes: A47L 13/44 Securing scouring-cloths to the brush or like body of the implement

Abstract

Disclosed is a cleaning sheet to be attached to a cleaning head. The cleaning sheet has an attachment surface coated with a viscoelastic polymer such as SEBS for preventing slipping of the cleaning sheet relative to the cleaning head. Over the working temperature range between −20° C. and 40° C., the viscoelastic polymer has a stable storage modulus (G′) of 10⁴ to 10⁶.

Claims

1. A cleaning sheet comprising:

a main body having an attachment surface to be applied to a cleaning head of a cleaning device and a cleaning surface opposite the attachment surface; and

attachment portions to be engaged to the cleaning head,

wherein the attachment surface has a viscoelastic polymer for preventing slipping.

2. The cleaning sheet of claim 1, wherein the viscoelastic polymer is selected from the group consisting of rubber-based elastomers, silicone-based elastomers and urethane-based elastomers.

3. The cleaning sheet of claim 1, wherein the viscoelastic polymer is a synthetic rubber comprising styrene and at least one of butylene, butadiene and isoprene.

4. The cleaning sheet of claim 1, wherein the viscoelastic polymer is applied to the attachment surface in a hot, molten state.

5. The cleaning sheet of claim 1, wherein the viscoelastic polymer is applied to the attachment surface in an emulsion, latex or solution state.

6. The cleaning sheet of claim 1, wherein the viscoelastic polymer has a storage modulus of 10⁴ to 10⁶ over a temperature range between −

20°

C. and 40°

C.

7. The cleaning sheet of claim 6, wherein the viscoelastic polymer has a peak value of loss tangent below −

20°

C.

8. The cleaning sheet of claim 1, wherein the viscoelastic polymer has a loop-tack strength equal to or less than 10 ounces.

9. The cleaning sheet of claim 1, wherein the attachment surface is intended to be applied to a bottom face of the cleaning head which is made of ethylene-vinyl acetate.

10. The cleaning sheet of claim 1, which comprises a liquid absorbent sheet which enables cleaning with liquid absorbed in the cleaning sheet.