A method for producing a steel tube including the step of the manufacturing a steel tube having an inner tube wall, an outer tube wall, and a free tube cross-section enclosed by the inner tube wall, wherein after the manufacturing, the steel tube includes at least one contaminant on the inner tube wall. After the manufacturing of the steel tube, the inner tube wall is cleaned by introducing liquid or solid CO.sub.2 into the free tube cross-section, and of applying the liquid or solid CO.sub.2 onto the inner tube wall to remove the contaminant therefrom.

The rewinding machine includes a first winding cradle, formed between a first winding roller, a second winding roller and a third winding roller, and a second winding cradle formed between the first winding roller, the second winding roller and a fourth winding roller. The first winding roller and the second winding roller define a nip through which nip the winding cores, around which the web material is found, pass and the web material is fed towards a roll being formed in the second winding cradle. A severing member is furthermore provided, acting on the web material between a winding core and the nip, to sever the web material thus generating a tail edge of a completed roll and a leading edge of a new roll to be wound.

A system has first and second winding drums and a core feeder for inserting a core into a winding nest for forming a convoluted roll. The leading edge of the web is engaged with a threading belt and directed around the first winding drum and through the winding nest to a position where the leading edge is beyond where the core feeder inserts the core into the winding nest thus providing an excess portion of the web between the leading edge and the core feeder core insertion position. A thread-up core is inserted into the winding nest and rotated with the winding drums so that the excess portion moves around the thread-up core. The leading edge is separated from the threading belt, the excess portion of the web is wound around the thread-up core, and the web from the supply is wound around the thread-up core.

A system has first and second winding drums and a core feeder for inserting a core into a winding nest for forming a convoluted roll. The leading edge of the web is engaged with a threading belt and directed around the first winding drum and through the winding nest to a position where the leading edge is beyond where the core feeder inserts the core into the winding nest thus providing an excess portion of the web between the leading edge and the core feeder core insertion position. A thread-up core is inserted into the winding nest and rotated with the winding drums so that the excess portion moves around the thread-up core. The leading edge is separated from the threading belt, the excess portion of the web is wound around the thread-up core, and the web from the supply is wound around the thread-up core.

The rewinding machine includes a first winding cradle, formed between a first winding roller, a second winding roller and a third winding roller, and a second winding cradle formed between the first winding roller, the second winding roller and a fourth winding roller. The first winding roller and the second winding roller define a nip through which nip the winding cores, around which the web material is found, pass and the web material is fed towards a roll being formed in the second winding cradle. A severing member is furthermore provided, acting on the web material between a winding core and the nip, to sever the web material thus generating a tail edge of a completed roll and a leading edge of a new roll to be wound.

A web unwind stand for obtaining, loading, splicing, and unwinding a web material from a plurality of convolutely wound rolls and forwarding the web material unwound from each of the convolutely wound rolls uninterruptedly to a downstream apparatus is disclosed. The unwind stand has a frame, a positionable roll grasping apparatus having a mandrel connectively engaged thereto and, splicing means. The positionable roll grasping apparatus is capable of obtaining and disposing the convolutely wound rolls proximate to the splicing means relative to the frame.

The rewinding machine includes a first winding cradle, formed between a first winding roller, a second winding roller and a third winding roller and a second winding cradle formed between the first winding roller, the second winding roller and a fourth winding roller. The first winding roller and the second winding roller define a nip through which nip the winding cores, around which the web material is found, pass and the web material is fed towards a roll being formed in the second winding cradle. A severing member is furthermore provided, acting on the web material between a winding core and the nip, to sever the web material thus generating a tail edge of a completed roll and a leading edge of a new roll to be wound.

A loading apparatus for loading a fabric attachment hardware element to a rotator holder apparatus for positioning the attachment hardware element for attachment to a fabric. The attachment hardware element has at least one opening for securing the attachment hardware element to the fabric. The loading apparatus comprises a receiving member and a loading arm. The receiving member includes support members positioned to create a channel that receives the attachment hardware element, wherein at least one of the support members is moveable. The loading arm is moveable laterally relative to the receiving member and configured to contact and move the attachment hardware element towards the rotator holder apparatus, the loading arm further configured to, upon movement of the attachment hardware element towards the rotator holder apparatus, contact and dislodge the moveable support member(s) and release the attachment hardware element from the channel to permit movement of the attachment hardware element.

The disclosed subject matter provides a mandrel feeding device and a battery winder. The mandrel feeding device has a dispensing station, an adjusting station, an adhesive application station, a transferring unit, a dispensing unit, a feeding unit configured for gripping a mandrel on the transferring unit and transferring gripped mandrel to a winding mechanism.