Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – Automatic and/or material-triggered control
Patent
1995-12-20
1998-05-19
Simmons, David A.
Adhesive bonding and miscellaneous chemical manufacture
Surface bonding means and/or assembly means therefor
Automatic and/or material-triggered control
156359, 156361, 156366, 156439, 156515, 533746, 53451, 53479, 53552, B32B 3100, G05G 1500
Patent
active
057530670
ABSTRACT:
A bag maker bends an elongated flexible bag-making film into a tubular form and transversely seals it by a transverse sealer while filling it with articles to produce packaged bags. The transverse sealer has two seal jaws at both sides of the film being pulled downwards. The seal jaws are each caused to move in a generally D-shaped trajectory with a vertically straight portion where they move along the film, sandwiching it therebetween. The seal jaws are operated so as to move faster than the film while on the top half of the straight portion of the trajectory where stripping takes place and more slowly than the film while on the bottom half of the straight portion such that the film will blouse to make it easier for articles to drop deeper inside the bag being produced. The speed of each seal jaw on the arcuate part of its trajectory is adjusted such that the period of the cyclic motion of the seal jaws need not be modified.
REFERENCES:
patent: 4663917 (1987-05-01), Taylor et al.
patent: 4750313 (1988-06-01), Kammler et al.
patent: 4751808 (1988-06-01), Hadden
patent: 5279098 (1994-01-01), Fukuda
patent: 5347795 (1994-09-01), Fukuda
patent: 5377474 (1995-01-01), Kovacs et al.
patent: 5485712 (1996-01-01), Cherney et al.
Fukuda Masao
Kondo Masashi
Nakagawa Yukio
Ishida Co. Ltd.
Nishimura Keiichi
Rivard Paul M.
Simmons David A.
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