Sheet packaging material, of the type used for packaging objects on automatic packaging machines where the material is supplied in very long lengths on reels, where said material may be a single or multi layer material, where means are provided for determining where cut-off lines shall be placed, where cut-off lines indicate sections where the material will be cut when separating the packages from each other after the material has been formed into a package, and where one or more substantially parallel longitudinal slits are provided across said cut-off lines.
B65B 61/02 - Dispositifs accessoires, non prévus ailleurs, opérant sur feuilles, flans, bandes, attaches, réceptacles ou paquets pour perforer, inciser ou appliquer des marques de code ou de dates avant l'emballage
Method of manufacturing a package of the type formed from a single-layer or multilayer material sheet, where said package has an easy to open feature, where the sheet is shaped into the finished package having an inner side suitable to be in contact with the matter to be packaged and an outer side, comprising the following method steps: forming the film into a tube, by connecting the two side edges of the sheet longitudinally; where the connection creates a side flap (10) on the outside of the tube or where the tube is passed over a former having a projecting fin, whereby a side flap is formed on the outside of the tube; where cross seals (3, 4) are provided across the tube, thereby delimiting each package between two cross seals; that perforation lines (25) are established in said cross seals, for detaching/ separating two adjacent packages; that a perforation (7) of one material layer is established, parallel to and adjacent the side flap, extending from the perforation line towards or into the cross seal.
B65B 61/04 - Dispositifs accessoires, non prévus ailleurs, opérant sur feuilles, flans, bandes, attaches, réceptacles ou paquets pour découper les bandes ou pour séparer les paquets joints
B65B 61/12 - Dispositifs accessoires, non prévus ailleurs, opérant sur feuilles, flans, bandes, attaches, réceptacles ou paquets pour découper les bandes ou pour séparer les paquets joints en déchirant le long des perforations ou des lignes de moindre résistance
B65D 75/44 - Paquets individuels découpés dans des bandes ou des tubes
B65B 9/20 - Enserrage d'objets les uns à la suite des autres ou de quantités de matériaux, dans des bandes tubulaires préformées ou dans des bandes en forme de tubes autour des tuyères de remplissage, p. ex. des bandes tubulaires extrudées les bandes étant mises en forme de tube sur place autour des tuyères de remplissage
brevets