Weldotron Corporation

Seymour Zelnick

The disclosure concerns an apparatus and method for wrapping products in stretch film by placing each product on a product support table having collapsible fingers. A pivotable frame is loaded with successive lengths of stretch film and pivoted down over each product placed on the support table. Tucking blades mounted on the frame tuck the side edges of the film under the product, while infeed and outfeed rollers tuck the front and back edges under the product. Pusher means then advance the product onto the outfeed conveyor to complete the front tuck and seal the film beneath the product.

Stretch wrap system and method of packaging

The disclosure is of apparatus including a pallet load which is to be wrapped with film, the pallet and load being horizontally movable along a straight-line path from a loading area to a wrapping station. At the wrapping station, there are a fixed vertical roll of wrapping film and a movable vertical roll of wrapping film, and the film to be wrapped around the load extends, as a curtain, between the two rolls. When the pallet load is moved into the wrapping station, it is pushed into the curtain of film which partially encloses the load, and the movable roll is driven toward the fixed roll to complete the wrapping of the film about the load and to provide a region where two layers of film overlap each other. With the load thus completely enclosed, a clamping bar secures the seal area, and a heat-sealing device is used to seal the overlapping layers of film to complete the wrap. The film is then cut in the seal area, the movable roll is returned to its starting position to re-form the curtain of film, and the wrapping operation is ready to be repeated.

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Somerville, NJ, United States of America

Seymour Zelnick