Bemis Manufacturing Company

Michael P O'Grady

Peter F Bemis

Steven J Kolste

Daniel N Cykana

Stephen Fiacchino

A co-injection nozzle pin () having downstream and upstream ends. The nozzle pin has therein a central bore () including an upstream end () adapted to communicate with a first material and a downstream end () exiting at the downstream end of the pin. The nozzle pin also has an outer surface () including a first portion () having a diameter D, a second portion () having a diameter D, wherein Dis less than Dand the first portion is rearward of the second portion. The pin further includes a channel () spiralling around the outer surface and being adapted to communicate with a second material. The channel () includes a first segment () defined in the first portion () of the outer surface and increasing in depth as it travels in a downstream direction and a second segment () defined in the second portion () of the outer surface and decreasing in depth as it travels in a downstream direction.

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Sheboygan Falls, WI, United States of America

Michael P O'Grady