Abstract A method and apparatus for the flat advancement of one or more running webs of paper between two guide rollers and/or for combining two such webs, the apparatus comprising a pair of guide rollers between which a web is to be passed, a table having a guide surface positioned along the path of the web between the guide rollers, and an air removal body in tandem with the table to form a vacuum zone between the web and the surface thereby drawing the web toward the surface while the web moves therealong, the air removal body having a sharp edge directed against the direction of movement of the web. Advantageously the air removal body has a sharp edge positioned adjacent one of the guide rollers so as to form therewith a narrow gap through which the supply web is carried, the active surfaces of the air removal body and guide table lying in a common plane. A working cylinder may be pivotally connected to the air removal body to permit it to be lowered to enlarge the gap with the guide roller to facilitate threading up of the web.
Inventors
👤 Karl-Otto Lansmich
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-11-02 09:04
CPC Classifications
B; B65; B65H; B65H23/00; B65H23/04; B65H23/24
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
130 words
An apparatus for the flat advancement of a tissue paper web, comprising a pair of guide rollers between which a web is to be passed, a table having a guide surface positioned along the path of the web between the guide rollers, the guide rollers being spaced from one another a sufficient distance so as normally to result in fluttering of the web in passage therebetween over the table, and an air removal body in tandem with the table to form a vacuum zone between the web and the surface thereby drawing the web toward the surface while the web moves therealong, the air removal body having a sharp edge directed against the direction of the movement of the web, whereby there is minimized the fluttering which would otherwise occur.
Claim 2
Independent Claim
130 words
An apparatus for the flat advancement of a tissue paper web, comprising a pair of guide rollers between which a web is to be passed, a table having a guide surface positioned along the path of the web between the guide rollers, the guide rollers being spaced from one another a sufficient distance so as normally to result in fluttering of the web in passage therebetween over the table, and an air removal body in tandem with the table to form a vacuum zone between the web and the surface thereby drawing the web toward the surface while the web moves therealong, the air removal body having a sharp edge directed against the direction of the movement of the web, whereby there is minimized the fluttering which would otherwise occur.
Claim 3
Dependent Claim
26 words
An apparatus according to claim 1, wherein the air removal body is succeeded by the guide table and their active surfaces lie in a common plane.
Claim 4
Dependent Claim
37 words
An apparatus according to claim 1, wherein the sharp edge of the air removal body is positioned adjacent one of the guide rollers so as to form therewith a norrow gap through which the web is carried.
Claim 5
Dependent Claim
48 words
An apparatus according to claim 3, including a working cylinder pivotally connected to the air removal body, actuation of the cylinder causing the air removal body to be displaced relative to the one guide roller so as to enlarge the gap to facilitate threading up of the web.
Claim 6
Dependent Claim
26 words
An apparatus according to claim 4, wherein the air removal body is succeeded by the guide table and their active surfaces lie in a common plane.