The woven dryer screen presses the paper web against the surface of steam-heated drying cylinders. Therefore the temperature of the paper web increases and water is evaporated into and through a porous dryer screen. Moreover dryer screen assist to support the paper sheet to shift from one cylinder to another cylinder. Dryer screen controlled paper web shrinkage.
Dryer Fabric , Dryer Screen , Paper Making Dryer Fabric
Dryer Fabric can be classified depending on weaving struction can be devided into woven dryer fabric and spiral dryer fabric.
We has launched new flat yarn woven dryer fabric, which is a unique two-tier flat warp weave screen with controlled permeability, recommended for Unirun positions and high speed machines. The higher surface contact area helps to increase the heat transfer with better sheet support thus lowering the energy consumption.
PPS yarn have better wear resistance and high temperature resistance than PET yarn, with Huatao's special design add the PPS yarn into the edge of dryer screen ensure higher life.
The selection of dryer fabric is depending on the various paper machine parameters such as paper grades, dryer cylinders configuration, dryer cylinder temperatures, air balance in the hood etc. Dryer screen design and materials are also very important.
For a particular paper machine, the permeability, design and materials of the dryer screen should be adapted to make sure optimum drying from a drying section. The air permeability of the dryer screen has a great impact on the rate of evaporation of water. If the permeability is decreased, then it is reduction in drying capacity of the dryer screen.
The dryer screen, whose air permeability range between 700-1000cfm is used on paper machine for producing higher gsm Kraft and board varieties. On the other hand 200-400cfm dryer screen widely used in medium and high speed paper machine and below these rage used in lower speed paper machine. Proper chosen of dryer clothing improve paper machine runnability, increased drying rate, improved paper quality and savings energy.
Moreover the dryer screen should have the following parameters or characteristics: Aerodynamic Properties, Heat Transfer, Fabric Tension, Sheet Support, caliper, heat resistant, wet-resistant, should be less elongation at heat, durability, silent drive, easy to operation etc.
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HUATAO GROUP
Tel: +86-311-80690567
Fax: +86-311-68008382
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Email: market@huataogroup.com
Address: No.298 Zhonghua North Street, Xinhua District, Shijiazhuang, China.
Website: www.papermachineclothings.com
