Browse Prior Art Database

Web-Coating Station

IP.com Disclosure Number: IPCOM000046155D
Original Publication Date: 1983-Jun-01
Included in the Prior Art Database: 2005-Feb-07
Document File: 2 page(s) / 43K

Publishing Venue

IBM

Related People

Pipkin, DJ: AUTHOR

Abstract

Two separate inflatable membranes operate to hold two separate flexible smoothing flaps against the surface of a traveling web which is being coated with a non-Newtonian coating liquid. The coating liquid is applied at the first smoothing flap, and is given final smoothing at the second smoothing flap.

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Web-Coating Station

Two separate inflatable membranes operate to hold two separate flexible smoothing flaps against the surface of a traveling web which is being coated with a non-Newtonian coating liquid. The coating liquid is applied at the first smoothing flap, and is given final smoothing at the second smoothing flap.

Traveling web 10 is guided by two highly polished metal rollers 11 and 12 which are driven to rotate about parallel axes 13 and 14, respectively. Rollers 11 and 12 are a number of feet in axial length, and web 10 is of a generally similar width.

A first rod-like metal member 15 supports an inflatable membrane 16 and a flexible smoothing flap 17 which covers the face of membrane 16 which is adjacent web 10, all of which are generally coextensive with and parallel to the axis of roller 12. A non-Newtonian coating liquid is supplied to the confluence of web 12 and smoothing flap 17. Member 15 is radially adjustable relative roller 12, as shown by arrow 18, in order to control the manner in which membrane 16 wraps a portion of the circumference of roller 12, to form a coating nip of a controlled length, as measured in the direction of web movement. The force provided to the coating nip is controlled by adjustment of the inflation pressure of membrane 16.

A second rod-like member 20 supports a second inflatable membrane 21 and a second flexible smoothing flap 22. Smoothing flap 22 also operates to cover the surface of membrane 21 which is adjacent we...