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How to seam the felts?
The seamed unit comprises two layers of warp threads and a sewing ring, each of the two layers of warp threads being woven over the weft threads and at least part of one layer of warp threads passing through the sewing ring.
The joining units are joined together by means of respective joining rings, which are arranged in the direction of the weft threads to form two common holes, and in each of which a joint core is inserted.
Application
As we all know, press felts are used in the press section of paper machine. It’s main effect is to press paper sheet and let the water off as much as possible before drying process.
Every increase of 1% of the dryness of the output press paper can reduce the drying load of the dryer by 4%. Therefore, it can save energy and increase production;
Due to the huge consumption of workers and time for installing and changing the felts, seamed felt appeared. It’s more suitable for huge paper machines.
Product parameters
Layer | single layer | double layer | triple layer |
Paper machine | all kinds of machine | all kinds of machine | all kinds of machine |
Speed | ≤800m/min | ≤1000m/min | ≤1000m/min |
Paper | ≥8g/m2 | ≥8g/m2 | ≥40g/m2 |
NIP | ≦80kN/m | 60-200kN/m | ≧200kN/m |
Installation of felt
01 Keep the felt clean to prevent oil from sticking to the felt.
02 Before the felt is flattened on each roll, it is not allowed to drop the top press roll, couch roll or support roll. Never pressurize the press roll until the paper machine is running normally.
03 let the machine run slowly at the beginning until it is running well, then set the suitable tension for stretching the felts to an ideal status.
04 There shall be sufficient gap between the spoke and the shaft sleeve or between the spoke and the spoke to make the felt easy to cover and avoid pulling the felt in through the gap.
05 remember to check and confirm there are no foreign matters on felt and machine.
06 The running direction of the felt on the paper machine shall be marked by the arrow on the felt surface.
How to confirm the felt type?
1). paper machine working speed
2). paper kind
3). weight of paper
4). use position
You can also indicate if you have any special requirement. We'll recommend most suitable type for you and provide a formal quotation list after received your inquiry.