| 摘要 |
PURPOSE: A wrapping system is provided to displace a package in the backward direction of normal moving direction through an inlet while double welded beams move to reduce tension of foils at least partially. CONSTITUTION: In a wrapping system of wrapping a package with foil, a frame(9) forms an inlet(8). A conveyor(1) has an extensional portion extended through the inlet, supporting the package. Driven foil rolls(11) have foils(12) connected at the end portion to form a curtain connected across the inlet. Double welded beams can move simultaneously from the opposed side portion of the inlet. The package is conveyed through the inlet to drag the curtain. The curtain encloses the package and the double welded beams are move together. The curtain is shut by welding the foils in the rear of the package. The package is displaced in the backward direction while the double welded beams move, to reduce tension of the foils.
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