Overlapped edges are fused together in the shrink tunnel, forming a tight seal and eliminating the need for a seal bar.
Shrink wrap system
Arpac's (Schiller Park, IL) Model BPTW-60 shrink wrap system overwraps 60 trays/min using either plain or print-registered PE film. It uses an overwrap flight bar system and single sheets of film cut by a rotary knife.
Feb 28, 1995
Machinery Basics
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