Package making – Interrelated or safety controls
Patent
1974-03-25
1978-03-21
Simpson, Othell M.
Package making
Interrelated or safety controls
53 30R, 53184R, 53198R, B65B 1310
Patent
active
040795659
ABSTRACT:
This invention provides an apparatus and process for making a unitary package which comprises a load that has a band formed of plural layers of a stretched material wrapped around it.
The apparatus comprises a frame with a rotatable drive shaft driven by a drive mechanism, an arm secured to the drive shaft and a roll holding shaft rotatably mounted to the arm. A sensor device measures the thickness of a material roll placed on the roll holding shaft to control an electromagnetic brake mechanism mounted on the roll holding shaft to variably engage the roll holding shaft thus maintaining a constant tension on the film unwrapped from the roll.
The steps of the process are placing a load on a support; locating a rolled-up sheet of a stretchable material on dispenser roll adjacent to the support; withdrawing a leading edge of the material from the dispenser roll and holding the leading edge of the material against the load. Relative movement between the dispenser roll and the support means is initiated but is restricted so that the material will be stretched with a sufficient amount of the stretched material being dispensed from the dispenser roll to provide a band comprising plural layers of the stretchable material around the load.
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Lancaster William G.
Lancaster, III Patrick R.
Lantech Inc.
Simpson Othell M.
Sipos John
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