# US 4,400,612 A · Oven for skin packaging machine

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- Number: US 4,400,612 A
- Document ID: US4400612A
- Status: Granted
- Kind: A
- Application number: 06/261,003
- Filed: 1981-05-06
- Granted: 1983-08-23
- Earliest claimed: 1981-05-06
- Assignees: Nordson Corporation
- Inventors: Cleve L. Lee
- Web page: https://patentgrep.com/patent/US4400612A

## CPC

- B65B 11/52: one sheet being rendered plastic, e.g. by heating, and forced by fluid pressure, e.g. vacuum, into engagement with the other sheet and contents, e.g. skin- {, blister-, or bubble-} packaging
- B65B: MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING (bundling and pressing devices for cigars A24C1/44; devices for tensioning and securing binders adapted to be supported by the article or articles to be bound B25B25/00; applying closure members to bottles, jars or similar containers B67B1/00-B67B6/00; concurrent cleaning, filling and closing of bottles B67C7/00; emptying bottles, jars, cans, casks, barrels or similar containers B67C9/00)

## Abstract

A film heating oven for a skin packaging machine. The oven has a metallic housing in which are supported a plurality of elongated heaters in spaced parallel relationship. The heaters are energized by a control system which raises their temperature for heating the film and lowers the temperature during other operations of the machine. The housing includes a reflector for each tube to direct the heat downwardly onto the film and further includes an outer covering of insulation to minimize the escape of heat.

## Claims

### Claim 1

An oven for heating film in a skin packaging machine comprising:
a rectangular-shaped housing having an exterior surface and a downwardly facing, open interior;
a plurality of inverted channel-shaped reflectors each including a flat base mounted to said housing and downwardly and outwardly flaring wings projecting from said base, said reflectors being mounted in said interior of said housing in parallel, spaced relation;
at least two electrical connectors mounted on said flat base of each said reflector;
a plurality of elongated heating elements, each of said reflectors receiving at least one of said heating elements mounted to said electrical connectors;
thermal insulative material surrounding said exterior surface of said housing; and
control means for supplying high energy to said heating elements for a portion of the cycle of operations during which film is heated, and for supplying low energy to said heating elements for the remaining portion of the cycle of operations of the skin packaging machine.