Papermaking Polyester Spiral Dryer Fabric

Papermaking Polyester Spiral Dryer Fabric

Papermaking Polyester Spiral Dryer Screen  are an endless construction comprising a plurality of helical formed loops of monofilament yarns. Polyester spiral belts can operate as dryer fabrics, filter mesh screens or conveyor belts. Spiral dryer fabric is available in a broad air permeability range. Spiral fabrics are easy to fit and install, simple to clean and remain stable even after long running times of operation. 

The dryer screen/fabric/canvas 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/fabric/canvas assist to support the paper sheet to shift from one cylinder to another cylinder. Dryer screen/fabric/canvas controlled paper web shrinkage.

The selection of dryer screen/fabric/canvas 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/fabric/canvas design and materials are also very important.

Depending on the intended purpose, the Spiral Dryer Canvas can be made from round or flat wires and have antistatic, dirt-repellent or enhanced abrasion-resistance properties.
Dryer screen/fabric/canvas can be classified depending on weaving struction can be devided into WOVEN type and SPIRAL type.

Spiral Link Dryer Fabric
Huatao has developed a wide range of spiral dryer screen to meet each client’s needs helping to reduce operation cost through energy efficient solutions. Also called as Spiral link dryer fabric or SLDF, spiral dryer screen is assembled with spiral loops linked by a pin yarn inserted in the adjacent holes. Spiral fabrics are widely used in various industries as paper machine dryer fabrics, drying & conveyor belts, filter cloth or screening media. Excellent materials are adopted to make the spiral fabric to protect against hydrolysis and high temperatures conditions.. Depending on the filler wire added to the spiral dryer screen, air permeability range from 100 to 1380 CFM.

For a particular paper machine, the permeability, design and materials of the dryer screen/fabric/canvas should be adapted to make sure optimum drying from a drying section. The air permeability of the dryer screen/fabric/canvas 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.
High numbers of contact areas with the drying surface ensure uniform drying.
Proper chosen of dryer clothing improve paper machine runnability, increased drying rate, improved paper quality and savings energy.

Dryer Fabric / Dryer screen / Dryer canvas 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.

Product Photos of Papermaking Polyester Spiral Dryer Screen