Printing – Embossing or penetrating – Rolling-contact machines
Reexamination Certificate
2006-03-06
2008-11-04
Nguyen, Anthony H. (Department: 2854)
Printing
Embossing or penetrating
Rolling-contact machines
C425S174400, C425S115000, C425S327000, C425S363000, C425S385000, C264S405000, C264S494000, C264S410000, C264S284000
Reexamination Certificate
active
07444932
ABSTRACT:
A roll to roll microreplication apparatus is described. This apparatus forms a microreplicated article including a web having first and second opposed surfaces. The apparatus includes a first patterned roll, first nip roll and first coating die; the first coating die is disposed adjacent the web substrate first side and the web substrate is disposed between the first patterned roll and first nip roll. The first nip roll touches the web substrate second side and the first patterned roll touches the web substrate first side. The apparatus includes, a second patterned roll, second nip roll and second coating die, the second coating die is disposed adjacent the web substrate second side and the web substrate is disposed between the second patterned roll and second nip roll. The second nip roll touches the web substrate first side and the second patterned roll touches the web substrate second side. A drive assembly is configured to rotate the first patterned roll and the second patterned roll such that the first and second rolls maintain a continuous registration within 100 micrometers. Methods of making a microreplicated article are also disclosed.
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Strand John T.
Wetzels Serge
3M Innovative Properties Company
Hinze Leo T
Nguyen Anthony H.
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