Bag sealing bar
AssigneeHayssen Manufacturing Company
InventorLloyd Kovacs
Life of this patent
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Abstract
A sealing bar for heat sealing a length of heat-sealable material, such as tubing, to form packages and the like. The sealing bar has a metal surface adapted for pressure engagement with the heat-sealable material for flattening it and heating it. A slot extends substantially through the bar, the slot being arranged to define the portion of the bar between the slot and the surface as a relatively thin resiliently flexible metal bridge. The bridge is engageable with a portion of the flattened heat-sealable material, such as a portion of tubing having a longitudinal seam or a gusset, thicker than other portions of the heat-sealable material and the bridge is adapted resiliently to yield on engagement with the thicker portion of the material.
Claims6
A sealing bar for heat sealing a length of heat-sealable material, such as tubing, to form packages and the like, said bar having a metal surface adapted for pressure engagement with the heat-sealable material for flattening it and heating it, said bar having a slot extending substantially therethrough adjacent said surface, said slot being arranged to define the portion of the bar between the slot and said surface as a relatively thin resiliently flexible metal bridge which is engageable with a portion of the heat-sealable material, such as a portion of tubing having a longitudinal seam or a gusset, thicker than other portions of the flattened material, and adapted resiliently to yield on engagement with said thicker portion of the material.
Dependencies are inferred from the claim text.