A separation device is usable for separating portions of a material web. The separation device has at least one front clamping device, with at least one front clamping point, and at least one rear clamping device, with at least one rear clamping point, and at least one first stretching element. The separation device can be switched between at least one traversing mode and at least one separation mode by the movement of at least the at least one first stretching device between at least one first traversing position and at least one first separation position. A transport line is the shortest connection between the at least one front clamping point and the at least one rear clamping point, that connection line completely on a vertical reference plane and traversing or running at a tangent to any component of the separation device on the respective same side as one of a transport path provided for the material web and the portions to be separated. The transport line, in the at least one separation mode, is 2 mm longer than in the at least one traversing mode and has the smallest radius of curvature in the at least one separation mode of at least 0.05 mm. A first reference plane and a second reference plane are mutually spaced apart in an axial direction and a first transport line, lying on the first reference plane, and a second transport line, lying on the second reference plane, have different lengths when the first stretching element is located in the at least one first separation position.

A separation device is usable for separating portions of a material web. The separation device has at least one front clamping device, with at least one front clamping point, and at least one rear clamping device, with at least one rear clamping point, and at least one first stretching element. The separation device can be switched between at least one traversing mode and at least one separation mode by the movement of at least the at least one first stretching device between at least one first traversing position and at least one first separation position. A transport line is the shortest connection between the at least one front clamping point and the at least one rear clamping point, that connection line completely on a vertical reference plane and traversing or running at a tangent to any component of the separation device on the respective same side as one of a transport path provided for the material web and the portions to be separated. The transport line, in the at least one separation mode, is 2 mm longer than in the at least one traversing mode and has the smallest radius of curvature in the at least one separation mode of at least 0.05 mm. A first reference plane and a second reference plane are mutually spaced apart in an axial direction and a first transport line, lying on the first reference plane, and a second transport line, lying on the second reference plane, have different lengths when the first stretching element is located in the at least one first separation position.

A method and an apparatus for opening value document packages in which value documents are packaged by means of a packaging material. A region of the packaging material is heated by means of hot air in such a manner that the packaging material opens along a cutting pattern. A system comprises such an apparatus and a value document package.

A method for manufacturing a sanitary cover for a beverage can and relates to a technique for forming a cutting line along a circumferential surface of a sanitary cover while the sanitary cover is covering a beverage can, thereby maximizing the production efficiency of the sanitary cover having improved functionality. Also, the technique which, in three-dimensionally forming a cutting line as such, can carry out the process of forming the cutting line easily and rapidly via a simple structure, thereby increasing the production efficiency even further.

A method for perforating a film of plastic material in which the film is perforated whilst it is slid through a perforating device by a plurality of pressurised hot gas jets having a temperature above the melting temperature of the main film, in which the hot gas jets are correlated with the sliding speed of the main film, and in which reinforcing bands obtained from an auxiliary film of plastic material are connected to the perforated main film, making the reinforcing bands adhere between parallel rows of base holes. During perforating, the main film of plastic material is pressed against a perforating template, making the main film of plastic material instantaneously penetrate openings of the perforating template by said hot gas jets. A hot gas perforating device and a suitable apparatus for perforating and stretching a film of plastic material are also provided.

A method for perforating a film of plastic material in which the film is perforated whilst it is slid through a perforating device by a plurality of pressurised hot gas jets having a temperature above the melting temperature of the main film, in which the hot gas jets are correlated with the sliding speed of the main film, and in which reinforcing bands obtained from an auxiliary film of plastic material are connected to the perforated main film, making the reinforcing bands adhere between parallel rows of base holes. During perforating, the main film of plastic material is pressed against a perforating template, making the main film of plastic material instantaneously penetrate openings of the perforating template by said hot gas jets. A hot gas perforating device and a suitable apparatus for perforating and stretching a film of plastic material are also provided.

A system comprising a wrapping device that forms a ring of tensioned material by wrapping a material around an outer circumference of a tube encasement, and a cutting device that cuts through an entire cross-section of the ring of tensioned material, the tube encasement and a tube encased by the tube encasement, wherein the ring of tensioned material applies a first radial force onto the tube encasement and induces a second radial force from the tube encasement onto the tube.

A separation device is usable for separating portions of a material web. The separation device has at least one front clamping device, with at least one front clamping point, and at least one rear clamping device, with at least one rear clamping point, and at least one first stretching element. The separation device can be switched between at least one traversing mode and at least one separation mode by the movement of at least the at least one first stretching device between at least one first traversing position and at least one first separation position. A transport line is the shortest connection between the at least one front clamping point and the at least one rear clamping point, that connection line completely on a vertical reference plane and traversing or running at a tangent to any component of the separation device on the respective same side as one of a transport path provided for the material web and the portions to be separated. The transport line, in the at least one separation mode, is 2 mm longer than in the at least one traversing mode and has the smallest radius of curvature in the at least one separation mode of at least 0.05 mm. A first reference plane and a second reference plane are mutually spaced apart in an axial direction and a first transport line, lying on the first reference plane, and a second transport line, lying on the second reference plane, have different lengths when the first stretching element is located in the at least one first separation position.

According to embodiments, a method of selectively ablating an optically transparent material covering a metal layer of a device may comprise: providing a layer of optically transparent material on a metal layer; and irradiating a portion of the layer of optically transparent material with a defocused or shaped laser beam and ablating the portion of the layer of optically transparent material; wherein the ablating leaves the metal layer completely intact and wherein the laser light has a wavelength within a range of 355 nm to 1070 nm and wherein the layer of optically transparent material absorbs less than or equal to 50% of the laser light from the laser beam on a single pass of the laser light through the layer of optically transparent material. Apparatus for laser ablation of a layer of transparent material on a metal layer, while leaving the metal layer completely intact are described.

According to embodiments, a method of selectively ablating an optically transparent material covering a metal layer of a device may comprise: providing a layer of optically transparent material on a metal layer; and irradiating a portion of the layer of optically transparent material with a defocused or shaped laser beam and ablating the portion of the layer of optically transparent material; wherein the ablating leaves the metal layer completely intact and wherein the laser light has a wavelength within a range of 355 nm to 1070 nm and wherein the layer of optically transparent material absorbs less than or equal to 50% of the laser light from the laser beam on a single pass of the laser light through the layer of optically transparent material. Apparatus for laser ablation of a layer of transparent material on a metal layer, while leaving the metal layer completely intact are described.