Title:
巻戻機内でペーパー・ウェブを引き裂く装置および方法
Document Type and Number:
Japanese Patent JP4500804
Kind Code:
B2
Abstract:
Apparatus for causing paper webs to tear off within rewinding machines, the said web (2) being provided, at regular intervals, with transverse perforation lines which subdivide the web into sheets joined to each other but able to be separated in correspondence of said perforation lines, the apparatus comprising means to cause the tearing of the web (2) upon the passage of a perforation line (p) which separates the last sheet of a log (RO) in the course of formation from the first sheet of the next log to be formed, wherein said tearing means are of pneumatic type (SP) able to direct a jet of compressed air toward the said line (p).Said pneumatic means (SP) comprise a set of nozzles (7) associated, via corresponding solenoid valves (70), with a reservoir of compressed air (71). Said nozzles (7), with the respective solenoid valves and reservoir (71) are positioned externally to a web (2)-feeding roller (RA) whose outer surface is provided with a plurality of circumferential grooves (76) in correspondence of which the nozzles (7) are positioned.
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Inventors:
Fabio Perini
Application Number:
JP2006507642A
Publication Date:
July 14, 2010
Filing Date:
March 22, 2004
Export Citation:
Assignee:
Fabio Perini
International Classes:
B65H19/26; B65H35/10
Domestic Patent References:
| JP10175759A | ||||
| JP61002645A | ||||
| JP2001114458A | ||||
| JP2001247237A | ||||
| JP11503397A |
Foreign References:
| US6328248 |
Attorney, Agent or Firm:
Shinsuke Ishihara