Package making – Progressively seamed cover web or web folds – With closing of web between package units
Patent
1977-11-11
1979-10-23
Culver, Horace M.
Package making
Progressively seamed cover web or web folds
With closing of web between package units
B65B 912
Patent
active
041716051
ABSTRACT:
A vertical form, fill and seal packaging machine has a tube former for receiving flexible packaging material in thin flat strip form and juxtaposing opposite longitudinal edge portions thereof in parallel vertically extending relationship to provide a depending tube open at the top. An end sealer provides vertically spaced horizontally extending transverse or end seals across the tube. A product dispenser discharges measured quantities of product into the tube interior through its open upper end. Tube feed means comprises first and second pairs of vertically spaced rolls respectively on opposite external sides of the tube of packaging material and first and second tube feeding belts respectively trained over said pairs of rolls. Inner runs of the belts engage the tube and have vertically extending perforate portions. Vacuum generating means communicate with the perforate portions to cause the belts to grip the tube and back-up means within the tube provide for frictional tube feeding action. Improved side sealing means comprises a third pair of rolls spaced vertically along the longitudinal edge portions and a belt trained thereover and in pressure engagement with the edge portions. Back-up means within the tube react the sealing belt pressure. The sealing means is driven in unison with the tube feed means and is both adjustable toward and away from the tube edge portions and movable bodily away from the edge portions to prevent overheating thereof.
REFERENCES:
patent: 2660219 (1953-11-01), Haas et al.
patent: 3729359 (1973-04-01), Monsees
patent: 3779836 (1973-12-01), Henry et al.
patent: 4040237 (1977-08-01), O'Brien
patent: 4043098 (1977-08-01), Putnam et al.
Groom James S.
O'Brien Edward F.
Putnam, Jr. Roger L.
Culver Horace M.
Package Machinery Company
LandOfFree
Vertical form, fill and seal packaging machine with improved sid does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Vertical form, fill and seal packaging machine with improved sid, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vertical form, fill and seal packaging machine with improved sid will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-405374