Package making – Methods – Enclosing contents within progressively formed web means
Patent
1990-01-12
1991-07-02
Sipos, John
Package making
Methods
Enclosing contents within progressively formed web means
531333, 533891, 53412, 53551, 226179, 493214, B65B 908, B65B 4116, B31B 190
Patent
active
050275844
ABSTRACT:
A method and a mechanism for making plastic film bags having a reclosable zipper including wrapping a continuous supply of film over a forming tube to form a seam joining the edges of the film and cross-seaming the film, supporting the supply roll of film with the film doubled and a zipper at the doubled edge; guiding the location of the zipper in the film so that the film is properly positioned as it is fed forwardly to be wrapped over the forming tube and means unfolding the film as it is fed forwardly to open the doubled film to be fed to the forming tube as a flat sheet.
REFERENCES:
patent: 3815317 (1974-06-01), Toss
patent: 4646511 (1987-03-01), Boeckmann et al.
patent: 4663915 (1987-05-01), Van Erden et al.
patent: 4691499 (1987-09-01), Umeda et al.
patent: 4704842 (1987-11-01), Boeckmann et al.
patent: 4727709 (1988-03-01), Zieke et al.
patent: 4790126 (1988-12-01), Boeckmann
patent: 4829745 (1989-05-01), Behr et al.
patent: 4840012 (1989-06-01), Boeckmann
patent: 4941307 (1990-07-01), Wojcik
Boeckmann Hugo
McMahon Michael J.
Bianca Beth
Illinois Tool Works Inc.
Sipos John
LandOfFree
Method and apparatus for unfolding folded zipper film does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for unfolding folded zipper film, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for unfolding folded zipper film will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1238014