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Primary Examiner—Horace M. Culver
Attorney, Agent, or Firm—Shefte, Pinckney & Sawyer
An improvement in film sealing apparatus, such as Lsealers, having an endless package discharge conveyor provides an arrangement for momentary conveyor reversal at the beginning of each sealing cycle to relieve film tension for maximization of seal strength. A cooling manifold directs an air stream at the transverse seal line at the completion of each sealing cycle to accelerate the curing of the seal to prevent undesired seal separation.
10 Claims, 3 Drawing Sheets