Heat sealing apparatus

Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – With means applying wave energy or electrical energy...

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

156251, 156272, 156498, 156499, 156515, B29C 2702

Patent

active

042670055

ABSTRACT:
There is disclosed a radiant energy device for bonding thermoplastic films without contact between the plastic films and the radiant energy sources in the form of resistance wires heated to incandescence by pulses of current timed to occur when the plastic films have been supported in tension and the wires have been brought to a point of close proximity to but spaced from the films. The wires are received in contoured reflecting cavities to focus and control the radiant energy, and the cavities are ducted to a source of coolant fluid which is applied in pulses timed in relation to the current pulses to cool and solidify the plastic seals and to cool the system to a reference temperature level at the conclusion of each cycle so that uniform sealing standards can be maintained. Resiliently biased, movable end supports for the wires maintain uniform tension under changes of wire length with temperature so that the distance of the wires from the films is uniform and unchanging at all points along its length.

REFERENCES:
patent: 3262833 (1966-07-01), Zelnick
patent: 3347729 (1967-10-01), Seefluth
patent: 3672116 (1972-06-01), Ingmarson
patent: 3846210 (1974-11-01), Groundwater
"Innovations", Package Engineer, Barnaby, p. 45, Apr. 1978.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Heat sealing apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Heat sealing apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Heat sealing apparatus will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2044886

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.