Felt is an important paper machine spare part and is widely used in all kinds of paper making machine, such as toilet paper machine, tissue paper making machine, wet napkin making machine, a3,a4 paper making machine, kraft paper machine and corrugated paper making machine. In drying section, wire section and reeling end of paper machine, felt are an necessary part to ensure the machine to function well.
The Press felt is an important role in removing the water from the paper web after the forming section, at the same time imparting smoothness and conveying it to the dryer section. For this reason, The press felt needs to provide the following functions: water removal, smoothness and runability. In recent years, larger and faster paper machines require press felts of even higher consistency and quality.
1.Absorbing the moisture squeezed out of the wet paper pages in the pressure zone.
2.Supporting the wet page to prevent "embossing" in the pressure area.
3.In the pressure zone, the elasticity of the felt can evenly distribute the pressure on the whole wet paper page.
4.Giving the desired surface properties of the page.
1.Water filtration
As a dewatering medium, when the paper web is dehydrated in the vacuum box and the press area, the paper making blanket absorbs and filters out the water from the paper sheet.
2.Leveling effect
In the process of web transfer and dehydration, it plays a role in leveling and modifying the paper surface
3.Function of conveyor belt
The paper sheet is transferred from the net part to the drying cadre through the pressing part, and the driven roller and cylinder mould are driven to operate.
1. High anti-compaction capacity.
2. Extremely high elasticity and recoverability.
3. Strong drainability abd larger void volumn.
4. Long holding time of wear resistance and plastic strength of felt.
5. Smooth felt surface and even pressure distribution.
| Layers |
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 |
≥40g/m2 |
≥40g/m2 |
| NIP |
≤80kN/m |
60-200kN/m |
≥200kN/m |
Do not put too much strain when use it in the beginning, also the speed can not be too fast. Make the new felt work slowly for the first two to three hours and keep the test speed between 70-80. 24 hours later, push the speed up to 90-100 meters per minute, 36 hours later, push it to 100-130 meters, finally change the machine to full-speed operation. After a week of use,the cloth must be cleaned once, which is conducive to our product.
The felt whipper can only be used in the late stage, before cleaning it, you have to know the material, tapestries are acid resistant but not alkali resistant, while nylon is opposite, so we must reasonably deploy the detergent. In case,when wash the felt with acid,keep it under strict control at 3%-5%.Nylon felt can not be washed with acid, or it will dissolve and its surface would be gelatinous. In addition, after washing, you should clean with fresh water in time.If there is residual acid, use alkali to neutralize it.
1.Bubble Film and waste thick fabric wrapping while protecting inside fabric.
2.Wrapped special fabric package outside(Air shipping ).
3.Composite wooden box(seashipping ).
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