Webex Inc. said its ZDR anti-deflection roll virtually eliminates roll deflection in film casting and calendering operations, without the need for roll crowning.
Webex, of Neehan, Wis., said ZDR reduces material lost to uneven wall thicknesses by as much as 20 percent.
Conventional nips create uneven pressure profiles that cause gaps at the center of the nip, but the design of the ZDR roll puts the load of external forces on the shaft. That allows the outer roll to maintain a consistent profile across the entire face of the roll, in a more-inform roll profile.
An optional stainless steel overlay makes the roll suited for plastic sheet lines.
Tel. 920-729-6666, fax 920-725-9992, email [email protected].