Longitudinal folding of webs, folding board system therefor

Details Longitudinal folding of webs, folding board system therefor Longitudinal folding of webs, folding board system therefor

1983-07-15

1985-03-05

Eickholt, E. H.

Sheet-material associating

Associating and folding

Zigzag package

270 41, B41L 130

Patent

active

045026750

ABSTRACT:
Longitudinal folding of flexible web into four substantially equal sections without the occurrence of undesirable wrinkling of the surface of the folded sections is effected by a longitudinal folding board system. The folding board system employs a secondary folding board for initiating folding a first section of the web into parallel relationship with a second section to form a double-folded half section of the web. The web moves over the top surface of the secondary folding board; and the first section of the web is diverted from the remainder of the web along a given angular path. A primary folding board, positioned at an incline downstream from the secondary folding board is used to redirect the path of travel of the second and fourth sections of the web from paths of travel under the primary folding board of paths of travel about boundaries of the primary folding board such that the second section of the web is folded adjacent to the first section about a longitudinal fold line axis forming the double-folded half section of the web while the fourth section is folded under the third section along a horizontal path. A folding rod is used to guide the double-folded half into an overlaying parallel relationship with the third and fourth sections. An additional folding means is employed to displace the first section from the second section of the web keeping the section fully extended in both the cross and machine directions as the double-folded half of the web is guided over and onto the third section to form a W-type longitudinal fold. A second embodiment of the device is also disclosed.

REFERENCES:
patent: 3291478 (1966-12-01), Couzens et al.
patent: 3291479 (1966-12-01), Greiner et al.
patent: 3401927 (1968-09-01), Frick et al.
patent: 3401928 (1968-09-01), Frick
patent: 3472504 (1969-10-01), Murphy et al.
patent: 3542356 (1970-11-01), Murphy et al.
patent: 3679094 (1972-07-01), Nissen et al.
patent: 3817514 (1974-06-01), Nissen et al.
patent: 4052048 (1977-10-01), Shirasaka
patent: 4131271 (1978-12-01), Slawny

Affiliated with

Also associated with

Rating

Longitudinal folding of webs, folding board system therefor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Longitudinal folding of webs, folding board system therefor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Longitudinal folding of webs, folding board system therefor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1730743