Patent ID: 7913474
Filing Date: 2011-03-29
Classification: B31D,Y10S

Abstract:
1. An apparatus for inflating film for manufacturing packaging material in situ, wherein the apparatus comprises: an inflating unit, a film conveying provision, a sealing unit and a film receiving means for receiving a film roll, wherein the apparatus is a compact apparatus, wherein the inflating unit, the film conveying provision and the sealing unit are provided in a central unit on the apparatus and are operatively positioned with respect to a center of the film to be inflated and sealed viewed in a direction at right angles to a film conveying direction, wherein the film to be inflated is operatively engaged only in or near the center thereof by the central unit, for inflating the film from or from near the center, then sealing the film and conveying it, wherein the inflating unit has a blow nozzle, which comprises a rounded top at a blow nozzle end, and a downstream inside of the rounded top gradually merges into upstream longitudinal sides of the blow nozzle, upstream and downstream referring to a normal air flow direction in the blow nozzle during use, wherein the blow nozzle has at least two air outlet openings that are placed at an angle with respect to the film conveying direction, such that, during use, air flows from each of said at least two air outlet openings in a regular manner into the film in a direction that lies in a same plane as the film, and that comprises a first component that is directed oppositely to the film conveying direction and a second component that is directed perpendicularly to the film conveying direction, and wherein the angle between the at least two air outlet openings and the film conveying direction has a magnitude of 15-50°.