Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – Chamber enclosing work during bonding and/or assembly
Patent
1978-07-27
1980-04-29
Weston, Caleb
Adhesive bonding and miscellaneous chemical manufacture
Surface bonding means and/or assembly means therefor
Chamber enclosing work during bonding and/or assembly
53175, 156285, 156287, 156497, 156499, 425504, B29C 1704
Patent
active
042004810
ABSTRACT:
Individual flanged trays are deposited on a conveyor belt. A continuous film is applied across the top surface of the trays. A heated flat plate is pressed into the film and causes the tray flanges to bend to a desired position. The plate heats the film throughout and bonds the film to the tray flanges. Directly thereafter and while at the same station, vacuum is applied which serves to deform the film into the interior of the trays. The formed film preferably has rounded corners and may be partially separated from the bottom wall and side walls of the tray by an air space. Thereafter, a heated plug preferably having insulated sides, heat seals the now deformed film to the bottom wall of the tray. A cutting device trims the excess film at the tray flanges. The excess film may be scavenged and recycled. The cutting device may be provided at the deforming station or the sealing station or at a trimming station downstream of either of these stations. After one or more food products is deposited in each film lined tray, a second film is applied across the surface of the filled tray and heat sealed to the first film at the tray flanges. A single trimming station might be used to trim both the second film and the now deformed and sealed first film.
REFERENCES:
patent: 3218776 (1965-11-01), Cloud
patent: 3932105 (1976-01-01), Knoell
patent: 3957558 (1976-05-01), Lee et al.
patent: 4010230 (1977-03-01), Repenning
patent: 4092201 (1978-05-01), Wommelsdorf
patent: 4124434 (1978-11-01), Wommelsdorf et al.
Champion International Corporation
Sommer Evelyn M.
Weston Caleb
LandOfFree
Apparatus for making a lined tray 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 making a lined tray, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for making a lined tray will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1683011