Manufacturing container or tube from paper; or other manufacturi – Container making – Pliable container
Patent
1986-09-08
1987-12-22
Schmidt, Frederick R.
Manufacturing container or tube from paper; or other manufacturi
Container making
Pliable container
493208, 493225, 493394, 493928, 1565831, 1565834, B31B 2364, B31B 2386
Patent
active
047144548
ABSTRACT:
Apparatus for heat sealing a pair of hems in a moving web of film having structure including a pair of spaced surfaces over which each hem of the pair of hems is adapted to pass. A first block is supported by the structure with respect to one of the surfaces and on one side of one of the hems. A plurality of rollers is mounted on the first block at spaced locations in tandem for engaging the film along the path of the heat seal to be formed in the one hem. A second block is supported by the structure with respect to the other of the surfaces and on one side of the second hem. The second block has a plurality of rollers mounted thereon at spaced locations in tandem for engaging the film along the path of a heat seal to be formed in the second hem. Heaters are provided for each of the blocks and the respective plurality of rollers whereby movement of the hems through the heat sealing apparatus causes the plurality of rollers mounted on the blocks to rotate and produce the heat seals in the pair of hems. Mounted on the structure between the pair of hems is a plurality of back-up rollers for engaging the film along the path of the heat seals to be formed in the hems and cooperating with the heated rollers on the blocks in creating the heat seals in the pair of hems.
REFERENCES:
patent: 2242799 (1941-05-01), Moore
patent: 2762420 (1956-09-01), Stanton
patent: 2897729 (1959-08-01), Ashton et al.
patent: 2971874 (1961-02-01), Canno
patent: 2998842 (1961-09-01), Good
patent: 3029853 (1962-04-01), Piazze
patent: 3058402 (1962-10-01), Kugler
patent: 3058403 (1962-10-01), Kugler
patent: 3406610 (1968-10-01), Golden
patent: 3414032 (1968-12-01), Jortikka
patent: 3484325 (1969-12-01), Pendleton
patent: 3759772 (1973-09-01), Andersson
patent: 4140046 (1979-02-01), Marbach
patent: 4202721 (1980-05-01), Roberts
patent: 4308087 (1981-12-01), Johnson
Gilman Michael G.
McKillop Alexander J.
Mobil Oil Corporation
Schmidt Frederick R.
Speciale Charles J.
LandOfFree
Apparatus for producing machine-direction heat seals does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for producing machine-direction heat seals, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for producing machine-direction heat seals will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-817054