A horizontal forming device, in particular for horizontal flow pack machines, comprises at least one, in particular roller-free, forming unit (12a-12d), in particular a forming shoulder, which is configured for forming a packaging material web (14a), in particular a paper web, into a packaging material tube (16a), the forming unit (12a-12d) comprising at least one folding edge (72a-72d) around which the packaging material web (14a) is deflectable, and comprises at least one form-guiding unit (18a-18d), in particular a further forming shoulder, which is configured for further guiding the packaging material tube (16a) transversely to a run-in direction (20a-20d) of the packaging material web (14a) at the forming unit (12a-12d) while maintaining an, in particular homogeneous, material tension generated by the forming unit (12a-12d), wherein the horizontal forming device comprises at least one support surface (22a), in particular a work plate, on which products (24a) that are to be packaged can be transported, the forming unit (12a-12d) and the form-guiding unit (18a-18d) being arranged on sides (26a-26d, 28a-28d) of the support surface (22a) that face away from each other, wherein the form-guiding unit (18a-18d) comprises at least one form-guiding contour (86a-86d), which is configured to support the guided packaging material tube (16a) in order to implement a maintaining of the homogeneous material tension.

A horizontal forming device, in particular for horizontal flow pack machines, comprises at least one, in particular roller-free, forming unit (12a-12d), in particular a forming shoulder, which is configured for forming a packaging material web (14a), in particular a paper web, into a packaging material tube (16a), the forming unit (12a-12d) comprising at least one folding edge (72a-72d) around which the packaging material web (14a) is deflectable, and comprises at least one form-guiding unit (18a-18d), in particular a further forming shoulder, which is configured for further guiding the packaging material tube (16a) transversely to a run-in direction (20a-20d) of the packaging material web (14a) at the forming unit (12a-12d) while maintaining an, in particular homogeneous, material tension generated by the forming unit (12a-12d), wherein the horizontal forming device comprises at least one support surface (22a), in particular a work plate, on which products (24a) that are to be packaged can be transported, the forming unit (12a-12d) and the form-guiding unit (18a-18d) being arranged on sides (26a-26d, 28a-28d) of the support surface (22a) that face away from each other, wherein the form-guiding unit (18a-18d) comprises at least one form-guiding contour (86a-86d), which is configured to support the guided packaging material tube (16a) in order to implement a maintaining of the homogeneous material tension.

The invention describes contact rolls for pressing at least one web of material, preferably a web of plastic film, against at least one rotating winding device, the contact roll comprising a surface layer.

At least two segments are provided which are spaced axially apart and which extend around, in which segments the quality of the surface layer differs from the quality of the other areas of the surface layer, at least some portions of said segments being in contact with the edges of the at least one web of material.

The invention describes contact rolls for pressing at least one web of material, preferably a web of plastic film, against at least one rotating winding device, the contact roll comprising a surface layer.

At least two segments are provided which are spaced axially apart and which extend around, in which segments the quality of the surface layer differs from the quality of the other areas of the surface layer, at least some portions of said segments being in contact with the edges of the at least one web of material.

The machine comprises an unwinding section (3) for unwinding parent reels (Ba, Bb) of web material (Na, Nb), and at least one unwinding station (15). A winding device (41, 53) is arranged in the unwinding station, and a longitudinal strip (S) of web material is fed to it and a respective spool (B) of web material is formed in it. A control unit (70) is also provided, configured to control the winding speed of the longitudinal strip (S) in the winding station (15), so as to perform an acceleration cycle to accelerate the winding of the longitudinal strip (S), comprising at least one step of gradually increasing the feeding speed (Vp) of the longitudinal strip (S), wherein the feeding speed is linked to the diameter of the spool (B).

A method for film production includes the steps of obtaining information on the position of a defect (D) in a separator (12a) and providing marks (LA, LB) at the respective positions in the vicinity of the defect (D), the marks indicating the position of the defect.

A roll (10) of glass ribbon (20), having a thickness of 0.3 mm or less, wherein a thickness compliant material interlayer (40) is wound together with the glass ribbon. The characteristics of the interlayer are chosen to form the roll with minimal lateral offset (9). For example, the static coefficient of friction between the interlayer and the glass ribbon may be greater than or equal to 3.0 (as measured with a vertical force of 0.5 N). Other characteristics may include the width, thickness, and compliance, of the interlayer. There is also disclosed a method of rolling a glass ribbon wherein the roll winding parameters, for example web tension and pressure between the layers of the roll, are chosen to minimize the lateral offset.

A roll (10) of glass ribbon (20), having a thickness of 0.3 mm or less, wherein a thickness compliant material interlayer (40) is wound together with the glass ribbon. The characteristics of the interlayer are chosen to form the roll with minimal lateral offset (9). For example, the static coefficient of friction between the interlayer and the glass ribbon may be greater than or equal to 3.0 (as measured with a vertical force of 0.5 N). Other characteristics may include the width, thickness, and compliance, of the interlayer. There is also disclosed a method of rolling a glass ribbon wherein the roll winding parameters, for example web tension and pressure between the layers of the roll, are chosen to minimize the lateral offset.

A device for winding up a film at a packaging machine, the device including a reception mandrel drivable for rotation about a rotation axis and a reception sleeve for the film for being pushed onto the reception mandrel. The reception sleeve may be formed by segments arranged next to each other along a circumference or perimeter of the reception sleeve, wherein neighboring or adjacent segments may be pivotably connected to each other. The reception mandrel may be formed as rigid body having engagement structures that are configured to cooperate with shape features of an inner circumference or perimeter of the reception sleeve, when the reception sleeve has been pushed onto the reception mandrel, so that a rotation of the reception mandrel about the rotation axis causes the reception sleeve to rotate with the reception mandrel.

A device for winding up a film at a packaging machine, the device including a reception mandrel drivable for rotation about a rotation axis and a reception sleeve for the film for being pushed onto the reception mandrel. The reception sleeve may be formed by segments arranged next to each other along a circumference or perimeter of the reception sleeve, wherein neighboring or adjacent segments may be pivotably connected to each other. The reception mandrel may be formed as rigid body having engagement structures that are configured to cooperate with shape features of an inner circumference or perimeter of the reception sleeve, when the reception sleeve has been pushed onto the reception mandrel, so that a rotation of the reception mandrel about the rotation axis causes the reception sleeve to rotate with the reception mandrel.