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.

A reel-up for reeling of a fiber web (W) around a reel spool (15B) to form a parent roll (20B; 20A) by use of a reeling nip (N) between a reeling cylinder (10) of the reel-up and the parent roll (20B) under reeling, has a primary reeling position and a secondary reeling position. The reel-up (10) has the reeling cylinder (10), substantially horizontal guides (14) and for each end of the reel spool (15A; 15B), loading arms (12,13; 16,17) and carriages (18) and the primary reeling position is fixed.

A reel-up for reeling of a fiber web (W) around a reel spool (15B) to form a parent roll (20B; 20A) by use of a reeling nip (N) between a reeling cylinder (10) of the reel-up and the parent roll (20B) under reeling, has a primary reeling position and a secondary reeling position. The reel-up (10) has the reeling cylinder (10), substantially horizontal guides (14) and for each end of the reel spool (15A; 15B), loading arms (12,13; 16,17) and carriages (18) and the primary reeling position is fixed.

This invention relates to a method of controlling the operation of a winder in which method while forming at least one fiber web roll the fiber web is brought on the web roll via a nip formed by a first support drum and the web roll, which first support drum is driven by a first drive assembly (20) applying controllable torque to the drum and the winding force is applied to the web roll by a second drive assembly (22). In the method the second drive assembly (22) is controlled based on the indicative speed difference of the second drive assembly (22) and setting a friction coefficient for determination of maximum winding force.

A slitter-winder for winding of pulp webs or corresponding webs with a thickness of at least 0.5 mm, in which the winder is a two-drum winder having two winding drums on support of which at least two pulp web rolls are wound. At least one of the winding drums is a nip acceptance winding drum (NAWD), that is a winding drum with a cover having a hardness of 40-80 Shore A and a thickness of 3-50 mm. The winding drums and a steel core or a shaft of the at least two pulp web rolls have parallel rotation axes and are in a rolling contact where the at least one winding drum is driven.

A slitter-winder for winding of pulp webs or corresponding webs with a thickness of at least 0.5 mm, in which the winder is a two-drum winder having two winding drums on support of which at least two pulp web rolls are wound. At least one of the winding drums is a nip acceptance winding drum (NAWD), that is a winding drum with a cover having a hardness of 40-80 Shore A and a thickness of 3-50 mm. The winding drums and a steel core or a shaft of the at least two pulp web rolls have parallel rotation axes and are in a rolling contact where the at least one winding drum is driven.

A geotextile rolling and collecting apparatus includes a mounting plate, a pair of outer lower forks arranged laterally, a pair of outer upper forks, at least one linear actuator, at least one lower feed drum, at least one upper feed drum, and at least one first drive motor. The first drive motor is coupled to rotate the lower feed drum on a first horizontal axis and to counter-rotate the upper feed drum on a second horizontal axis. With the geotextile rolling and collecting apparatus in a collecting position, a geotextile liner grasped between the feed drums is fed by counter-rotation of the upper feed drum and the lower feed drum into a collecting volume behind the upper feed drum and the lower feed drum and between the upper forks and the lower forks to form at least one geotextile liner roll in the collecting volume.

A rewinding machine for convolutley winding a web material onto a core to is disclosed. The rewinding machine comprises a first winding drum rotatable at a first peripheral velocity, a second winding drum opposed to the first winding drum and rotatable at a second peripheral velocity, and a core support for gripping opposing ends of the core. The core support grips opposing ends of the core during winding of the web material about the core. The core support has first and second rotatable pins each having corresponding first and second ends capable of insertion into a respective end of the core. The first rotatable pin has a channel that provides fluid communication between a source of positive pressure disposed external to the first rotatable pin and the second end of the first rotatable pin to provide positive pressure to the interior portion of the core.

A rewinding machine for convolutley winding a web material onto a core to is disclosed. The rewinding machine comprises a first winding drum rotatable at a first peripheral velocity, a second winding drum opposed to the first winding drum and rotatable at a second peripheral velocity, and a core support for gripping opposing ends of the core. The core support grips opposing ends of the core during winding of the web material about the core. The core support has first and second rotatable pins each having corresponding first and second ends capable of insertion into a respective end of the core. The first rotatable pin has a channel that provides fluid communication between a source of positive pressure disposed external to the first rotatable pin and the second end of the first rotatable pin to provide positive pressure to the interior portion of the core.