摘要:
A belt press for a paper machine, the belt press including a roll having an exterior surface and a permeable belt. The permeable belt including a first side being guided over a portion of the exterior surface of the roll. The permeable belt having a tension of at least approximately 30 kN/m. The first side of the belt having an open area of at least approximately 25% and a contact area of at least approximately 10%. A web travels between the permeable belt and the exterior surface of the roll.
摘要:
Method and device for producing a web of tissue. In the method, the web of tissue is led over at least one drying cylinder, doctored off the latter with a creping doctor and then wound up by way of a winding device. The web of tissue is supported at least largely over the entire distance between creping doctor and winding device on one side by a transfer device, so that there is only a short free web draw, while its other side is free. The device includes at least one drying cylinder, a creping doctor arranged on the drying cylinder and a winding device that winds up the web of tissue. Between the creping doctor and the winding device, a transfer device at least largely bridges the entire distance which supports the web of tissue on one side. There is a short free web draw, but its other side is left free.
摘要:
A paper machine dewatering system includes a first fabric, a second fabric, and an airflow device. The first fabric carries a fibrous web on a side thereof. The second fabric is in at least partial contact with the fibrous web, the fibrous web being between the first fabric and the second fabric. The airflow device moves air successively through the first fabric, the fibrous web, and the second fabric.
摘要:
An apparatus for producing a fibrous web includes: a circulating permeable structured belt defining a sheet forming zone in which the fibrous web is formed; a circulating unstructured permeable supporting belt; a pressing section through which the fibrous web is led lying between the circulating permeable structured belt and the circulating unstructured permeable supporting belt; a Yankee cylinder having a surface and defining a press nip and a press nip region, wherein the fibrous web is led together with the structured belt through said press nip, the fibrous web in the region of the press nip being transferred from the structured belt to the surface of the Yankee cylinder; at least one doctor which doctors off the surface of the Yankee cylinder continuously; and a coating device which recoats the surface of the Yankee cylinder so that a renewed coating material is always present in the press nip.
摘要:
A process for producing a fibrous web, in particular a tissue web, includes the following steps: in a pressing zone, the fibrous web is pressed lying between the structured belt and a circulating, unstructured permeable supporting belt; the fibrous web and the structured belt are fed to a press nip provided on a Yankee cylinder; the fibrous web is transferred from the structured belt to the surface of the Yankee cylinder in the region of the press nip; and the surface of the Yankee cylinder is doctored off continuously and then recoated again, so that a renewed coating is always present in the press nip.
摘要:
System for drying a tissue or hygiene web. The system includes a permeable structured fabric carrying the web over a drying apparatus. A permeable dewatering fabric contacts the web and is guided over the drying apparatus. A mechanism is used to apply pressure to the permeable structured fabric, the web, and the permeable dewatering fabric at the drying apparatus. This Abstract is not intended to define the invention disclosed in the specification, nor intended to limit the scope of the invention in any way.
摘要:
Apparatus for treating a fibrous web, in particular for producing a tissue paper web, with at least one crêping nip which is limited on the one side by a crêping belt and on the other side by a web supporting face formed in particular by a mating roll and through which the fibrous web can be passed, whereby a relative speed is provided between the crêping belt and the web supporting face, whereby in order to achieve a good crêping effect with simultaneous little crêping belt wear the material and/or the structure of the web supporting face and the surface of the crêping belt are coordinated with each other with a view to reducing the crêping belt wear caused by operation of the apparatus.
摘要:
A belt press including a roll having an exterior surface and a permeable belt having a side in pressing contact over a portion of the exterior surface of the roll. The permeable belt having a tension of at least 30 KN/m applied thereto. The side of the permeable belt having an open area of at least approximately 25%, and a contact area of at least approximately 25%.
摘要:
A permeable belt for use in a system for dewatering and/or drying a fibrous web. The permeable belt capable of being subjected to a tension of at least approximately 30 kN/m, the permeable belt having at least one side having an open area of at least approximately 25% and a contact area of at least approximately 10%.
摘要:
A permeable belt for use in a system for dewatering and/or drying a fibrous web. The permeable belt capable of being subjected to a tension of at least approximately 30 kN/m, the permeable belt having at least one side having an open area of at least approximately 25% and a contact area of at least approximately 10%.