Coating device
AssigneeBTG Kalle Inventing AB
InventorTore Eriksson
Life of this patent
Estimating the term…
Abstract
A coating device for one-sided or two-sided coating of a travelling web (15), including at least one backing roll (9) and an applicator (2) cooperating therewith to supply size or coating agent to the backing roll (9), and a device (17;19) for smoothing of material supplied to the web (15), and optionally, coating also the other side of the web (15), the coating device including a selfsupporting coating roll (3), the mantel surface of which cooperating with the backing roll (11) is provided with circumferentially extending, mutually parallel grooves or rifles (9) which provide for volumetric or metered application on to the surface of backing roll (9) before its contact with the web (15).
Claims17
A coating device for coating a travelling web, comprising at least one backing roll for contacting the web, application means cooperating therewith to supply a coating material to said backing roll, and means for smoothing material supplied to the web, said application means including a self-supporting coating roll, a mantel surface of said coating roll being provided with circumferentially extending, parallel grooves, said mantel surface cooperating with said backing roll to apply said coating material to a surface of said backing roll with metered application before said backing roll contacts the web, said self-supporting coating roll having a length-to-diameter ratio of less than about 25.
Dependencies are inferred from the claim text.