Patent EP-2156947-A1 (EP)
Inventor: FINK BERNHARD
IPC: B65B9/20
Filed: 2008-08-18
Abstract: The composite material comprises a composite foil (1) for the production of a tubular bag according to form-fill-seal-process or composite cardboard, a first layer, a radiation sensitive material (3) and a second layer that is connected with the first layer over a heat sensitive laminating glue that is equipped in an area of the radiation sensitive material and/or in an area reserved from the radiation sensitive material. An increased adhesive properties form in the heat supply through application of heat radiation- or microwave introduction. The first layer is a heat-shrinkable layer (2). The composite material comprises a composite foil (1) for the production of a tubular bag according to form-fill-seal-process or composite cardboard, a first layer, a radiation sensitive material (3) and a second layer that is connected with the first layer over a heat sensitive laminating glue that is equipped in an area of the radiation sensitive material and/or in an area reserved from the radiation sensitive material. An increased adhesive properties form in the heat supply through application of heat radiation- or microwave introduction. The first layer is a heat-shrinkable layer (2) and the second layer is a passive layer (4). Both layers are connected to each other in such a way that the composite material is transformed in the application of heat radiation- or microwave in predetermined manner. The passive layer is a cardboard- and/or paper layer and the heat-shrinkable layer is a film layer. The cardboard- and/or paper layer consist of points and/or dots. The radiation sensitive material is formed from a layer consisting of metal particles and/or from a pressure layer. The pressure layer consists of metal particle containing- or conductive components, semiconductor, electric conductive and/or non-conductive component, component forming dipole, color pigments and/or microencapsulated oil. The layer consisting of metal particles and/or the pressure layer are formed in the form of a predetermined points, lines and/or areas pattern. In the composite foil, the laminating glue is completely equipped over the composite foil and the composite foil between the first and the second layer comprises non-stick coating covering a point, line and/or area patterns and the radiation sensitive materials. The laminating glue is equipped completely over the composite foil and an anti-adhesive coating (5) is equipped in an area between the first and second layer of the composite foil removing from the radiation sensitive materials. The points-, lines and/or area patterns are formed through a graft connection pattern and/or circles or ellipse, through two rectangles with rounded corners, through two lines with contact points and/or through patterns formed through two parallel lines. The heat-shrinkable layer is formed from radiation sensitive material and the heat sensitive laminating glue and/or an anti-adhesive coating are produced from anti-adhesive lacquer with a pre-determined lacquer patterns. The film layer is a heat-shrinkable layer made of oriented polypropylene, a middle layer of passive layer made of polyethyleneterephthalate and external layer of a further passive layer made of oriented polypropylene. An independent claim is included for a form-fill-seal-process for the production of a tubular bag.