摘要:
A dry end of a tissue machine is made shorter by close-coupling a reel-up to the drying section and supporting the web from the drying section to the reel-up by a foil or a belt such that web stability is maintained, thus allowing high-speed operation. The foil's downstream edge can form a nip with the paper roll and nip load can be controlled by controlling pivotal movement of the foil. The reel-up can include a calendering belt for calendering the web as it passes through a nip between the belt and a reel drum supported on the belt, and a rotatable reel spool on which a paper roll is wound in nipping engagement with the reel drum. Alternatively, the reel drum can be eliminated and the paper roll can be supported on the belt. A composite shaftless core for winding is also disclosed.
摘要:
A double drum winder machine for web-formed material, especially paper webs, including a support. The machine further includes two winder drums which are disposed on the support and form therebetween a drum bed. A wound roll is operatively supported in the drum bed. One of the winder drums receives the web-formed material and directs the material towards the wound roll so that the material is wound onto the wound roll. A load drum is disposed on the support and rides on the wound roll. A relief drum is in cooperation with and is disposed on the same side of the wound roll as the one winder drum. The relief drum is operatively installed on rocking levers which are pivotally connected to the support. A drive mechanism operatively engages the rocking levers to pivot the levers toward and away from the wound roll so as to selectively and responsively press the relief drum against the wound roll whereby the weight of the wound roll against the one winder drum is adjustable during the winding operation.
摘要:
A roll sheet with a continuous sheet wound in a roll form is rotated in a forward direction to supply the sheet to a printing unit. A sensor whose output is changed in accordance with a distance between the sensor and the sheet is used. A rotation direction of the roll sheet is switched from an opposite direction to the forward direction on the basis of the output of the sensor during rotation of the roll sheet in the opposite direction.
摘要:
A flying reel change is accomplished by joining an exhausting web of a first reel that is to be replaced to a web of a fresh or replacement reel. The fresh reel is caused to run at the speed of the exhausting reel to be replaced prior to such joining. The exhausting web is joined to the fresh web once the diameter of the reel to be replaced has reached a set minimum. This minimum diameter may be fixed by the characteristics of a core for this exhausting reel.
摘要:
A dry end of a tissue machine is made shorter by close-coupling a reel-up to the drying section and supporting the web from the drying section to the reel-up by a foil or a belt such that web stability is maintained, thus allowing high-speed operation. The foil's downstream edge can form a nip with the paper roll and nip load can be controlled by controlling pivotal movement of the foil. The reel-up can include a calendering belt for calendering the web as it passes through a nip between the belt and a reel drum supported on the belt, and a rotatable reel spool on which a paper roll is wound in nipping engagement with the reel drum. Alternatively, the reel drum can be eliminated and the paper roll can be supported on the belt. A composite shaftless core for winding is also disclosed.
摘要:
A dry end of a tissue machine is made shorter by close-coupling a reel-up to the drying section and supporting the web from the drying section to the reel-up by a foil or a belt such that web stability is maintained, thus allowing high-speed operation. The foil's downstream edge can form a nip with the paper roll and nip load can be controlled by controlling pivotal movement of the foil. The reel-up can include a calendering belt for calendering the web as it passes through a nip between the belt and a reel drum supported on the belt, and a rotatable reel spool on which a paper roll is wound in nipping engagement with the reel drum. Alternatively, the reel drum can be eliminated and the paper roll can be supported on the belt. A composite shaftless core for winding is also disclosed.
摘要:
A property of a paper web is measured using one or more reflectance measurement sensors emitting measuring beams onto the web and receiving the beams reflected from the web, from which the web property is deduced. The web is supported on a web support during the measurement, such as on a passive or active airfoil or fabric. One or more measurement sensor(s) can be integrated within an active airfoil, and can comprise a plurality of optical fibers having sensing ends arranged in the airfoil such that the sensing ends of the fibers face the moving paper web through one or more apertures in a web-supporting panel of the airfoil. Alternatively, a traversing sensor can be mounted within the airfoil. Other embodiments include a reflectance sensor mounted adjacent an airfoil or other web support such as a through-air drying fabric or a support belt for the web.
摘要:
A system for creating and dispensing cushioning dunnage is small and permits flexible installation configuration options for a single or multiple packing stations. A compact apparatus of the system is capable of being pivotally mounted as a unit on a stand and includes a motor and a material feeding arrangement driven by the motor for pulling material from a supply roll of the material supported on a stand of the system, and feeding it through the apparatus. A plurality of material shaping members upstream of the feeding arrangement shape the material in the apparatus to convert it into a continuous strip of cushioning product. The feeding arrangement in one embodiment includes cooperating feed rollers, at least one of which is a rotary cutting die having a plurality of cutting blades on its surface for cutting slits in the material at spaced locations along the length of the material to allow an operator to manually rip a desired length of cushioning product from the material being dispensed from the apparatus.
摘要:
A reel shaft for reeling a paper web in a reel-up, which reel-up includes at least one unit that is mobile in the longitudinal direction of the paper machine and supports a pair of opposite engagement members each of which includes an engagement part, which engagement parts are arranged for rotatably carrying and detachably engaging the reel shaft during reeling. In accordance with the invention, the reel shaft is free of a support shaft and has a self-supporting, tubular sleeve substantially formed of fiber-reinforced plastic, which sleeve has an envelope surface on which the initial wrapping of the paper web shall be performed, and also an internal surface defining an axial channel terminating in axial openings at the ends of the reel shaft. The invention also relates to a reel-up for such reel shafts.
摘要:
A method, apparatus and system for making cushioning product, and a roll tensioner therefor apply frictional resistance to the periphery of a roll of material to be converted into cushioning product with at least one roll support member which supports the roll in addition to applying frictional resistance to rotation. Efficient operation is attained automatically in that the frictional resistance applied and also the pulling profile exerted on the material during unwinding of the roll are changed as a function of weight and/or other characteristics of the roll of material to be converted into cushioning product.