Importance

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Abstract

A cutting apparatus for cutting shrink wrap film residing in a roll. The apparatus includes a first roller pair receiving the film from the roll and carrying the film away from the roll; a second roller pair receiving the sheet of film from the first roller pair and carrying the film away from the first roller pair; a mechanism for providing an air stream to direct the leading edge of the film into the second roller pair; a mechanism for regulating the pressure exerted by the second roller pair against the sheet of film to maintain tension on the film between the first roller pair and the second roller pair; and a rotating blade to cut the film as the film exits the first roller pair, thereby producing a cut sheet of film. The apparatus may also include intermediate supports to prevent roller deflection, thus allowing the use of light-weight rollers to minimize inertia. A method for cutting a sheet of shrink wrap film, including: feeding the film into a first roller pair; feeding the film from the first roller pair into a second roller pair; regulating the pressure exerted by the second roller pair on the film so as to prevent slack from developing in the film without fully tensioning the film; and cutting the film between the first roller pair and the second roller pair.

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First Claim