Patent ID: 7444932

Claim:
A roll to roll microreplication apparatus to form a microreplicated article including a web having first and second opposed surfaces, comprising: a first patterned roll, first nip roll and first coating die, the first coating die disposed adjacent a first side of the web substrate and the web substrate disposed between the first patterned roll and first nip roll, wherein the first nip roll touches a second side of the web substrate and the first patterned roll touches the first side of the web substrate; a second patterned roll, second nip roll and second coating die, the second coating die disposed adjacent the second side of the web substrate and the web substrate disposed between the second patterned roll and second nip roll, wherein the second nip roll touches the first side and the second patterned roll touches the second side; and a drive assembly 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.