摘要:
For the purpose of improving the quality and especially the mechanical properties of single- or multi-ply sheets with at least one ply, consisting at least in part of thermoplastically processable starch, the sheets are stretched monoaxially or biaxially after they have been produced.
摘要:
The invention relates to a composite film (100) for packaging containers (1), having a film composite made of a plurality of packaging material layers (101 to 108), wherein an inner packaging material layer (108) is designed as a heat-sealing layer and an opening device (10) can be fixed to an outer packaging material layer (101), in particular by sealing to the outer packaging material layer (101), and wherein the packaging material layers (101 to 108) comprise a weakening region (20) in the region of the opening device (10). According to the invention, the weak region (20) is disposed on the side of the inner packaging material layer (108) and is implemented as an at least partial reduction in the layer thickness (D) of the inner packaging material layer (108), wherein the shape of the weak region (20), in particular having a circular cross section, is adapted to the arrangement of cutters (13) that are disposed on a partial circular diameter (T) of the opening device (10) as a part of the opening device (10).
摘要:
The invention relates to a composite film (100) for packaging containers (1), having a film composite made of a plurality of packaging material layers (101 to 108), wherein an inner packaging material layer (108) is designed as a heat-sealing layer and an opening device (10) can be fixed to an outer packaging material layer (101), in particular by sealing to the outer packaging material layer (101), and wherein the packaging material layers (101 to 108) comprise a weakening region (20) in the region of the opening device (10). According to the invention, the weak region (20) is disposed on the side of the inner packaging material layer (108) and is implemented as an at least partial reduction in the layer thickness (D) of the inner packaging material layer (108), wherein the shape of the weak region (20), in particular having a circular cross section, is adapted to the arrangement of cutters (13) that are disposed on a partial circular diameter (T) of the opening device (10) as a part of the opening device (10).
摘要:
In a flat-ended bag made of a flexible film material, two bag wall parts are connected via two longitudinal seams running substantially in a longitudinal direction (z) to form a bag wall that forms a tubular body and has sealing edge strips projecting from the bag wall. The tubular body is closed at both ends, at least one end of the tubular body has a base part disposed substantially perpendicular to the longitudinal axis (z) and serving as a standing surface, and a resealable opening is provided on at least one end of the tubular body. In order to increase the rigidity of the tubular body, the sealing edge strips are folded over onto the bag wall and sealed or glued to the bag wall.
摘要:
A multilayer film for the production of flexible packaging for thermal treatment has a plastic layer as outer layer and a sealable layer as inner layer, and middle layers. The outer layer, the inner layer and the middle layers are coextruded to form a biaxially oriented film, and the multilayer film has a maximum degree of dimensional change of 2% at most when exposed to temperature.