Package making – Methods – Forming or partial forming a receptacle and subsequent filling
Patent
1986-11-19
1987-10-06
Sipos, John
Package making
Methods
Forming or partial forming a receptacle and subsequent filling
53479, 53568, 53201, 53372, 53373, B65B 908
Patent
active
046974016
ABSTRACT:
An L-sealer apparatus in which the transverse arm portion of the pivotal pressure frame is provided with an adjustably-retractable cutting blade for alternatively forming bags having only three sealed sides thereof, with one side edge being left unsealed for subsequent closure by a twist-tie, and for alternatively forming conventional, completely sealed bags. A clamping element is provided for clamping the plastic film adjacent to the portion at which the cutting blade is to cut, in order to provide a clean cut. The plastic film is cut downstream or upstream of the portion being heat-sealed by the electrical heating wire provided with the transverse arm portion of the pressure frame. The cutting blade is adjustable such that its lower cutting edge may be alternately positioned below the lower edge surface of the clamping element to cut the plastic film, in order to form a bag sealed on three sides, or to raise the cutting edge of the blade above the lower edge surfaces of the clamping member, in order to provide a conventional bag completely sealed on all sides. The clamping member is mounted for relative movement with respect to the transverse arm portion of the pressure frame, with which it is floatingly mounted and urged toward the upper surface of the transverse arm portion by a plurality of spring members.
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Kessler Sheldon
Strubulis Vasilios
Benn Marvin N.
Gerstein Milton S.
Pack-All, Inc.
Sipos John
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