Method and apparatus for making an adhesive cleaning sheet

Coating processes – Coating remains adhesive or is intended to be made adhesive – Pressure sensitive adhesive

Reexamination Certificate

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Details

C427S256000, C427S428060, C427S210000, C427S211000

Reexamination Certificate

active

10920473

ABSTRACT:
A method of selectively applying pressure-sensitive adhesive to a nonwoven web and thereby forming a cleaning sheet having adhesive free peaks and adhesive containing valleys includes coating an adhesive transfer roll with adhesive, transferring a portion of the adhesive to raised regions of a female pattern forming roll, and transferring the adhesive from the raised regions of the female pattern forming roll to the web. An apparatus for selectively applying pressure-sensitive adhesive to a nonwoven web and forming a cleaning sheet is also described.

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Handbook of Pressure-Sensitive Adhesive Technology, 2nd ed., Chapter 13, D. Satas, Editor, Van Nostrand Reinhold, Publisher, NY 1989.
Handbook of Pressure-Sensitive Adhesive Technology, 2nd ed., Chapter 16, p. 473, D. Satas, Editor, Van Nostrand Reinhold, NY, 1989.
Emulsion Polymerization and Emulsion Polymers, Chapter 13, p. 455, P. Lovell and M. El-Aasser, Editors, John Wiley and Sons, NY, 1997.
Haskett et al., U.S. Appl. No. 10/920,953, filed Aug. 18, 2004, titled “Method and Apparatus for Making An Adhesive Cleaning Sheet”.

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