| After-sales Service: | Warranty |
|---|---|
| Warranty: | 1 Year |
| Certification: | CE, UL, ISO |
| Surface Treatment: | Polishing |
| Manufacturing Process: | Carbon |
| Material: | Carbon |
| Customization: |
|---|
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The wet paper is produced in a continuous high-temperature rotary dryer through a rotary dryer. When the formed paper is about to leave the yankee cylinder, the paper is continuously peeled off by the wrinkling scraper installed on the banner of the yankee cylinder. This peeling produces continuous extrusion effect at the local contact between the paper sheet and the knife tip, making the paper form tiny, fine and uniform wrinkles. Through this wrinkling process, the toilet paper can have good softness, uniformity and water absorption. This is an irreplaceable hard core of quality assurance in the production process, which shows the importance of creping doctor in toilet paper production.
Creping doctor are usually used in the paper industry to produce tissue paper, such as toilet paper or tissue. Separate the paper from the hot dryer and apply compression to the sheet,so that product the typical wrinkle structure of tissue paper.
Once in the maintenance period, the doctor blade is usually easily ignored. But some simple routine maintenance can keep the equipment running efficiently.One of the most effective ways to check the same problem is to check the blade with vision. The following table shows the different types of blade wear and the corresponding treatment methods. This inspection method is very effective.
| Problem | Reason | Measure |
| Uneven wear, frequent blade replacement | 1. The surface of roller or dryer is uneven 2. The doctor holder is damaged or dirty 3. Sediment |
1. Use a softer blade 2. Clean, repair or replace the doctor holder 3. Use abrasive blade |
| Excessive wear on middle or edge of blade | 1. The blade is not installed on the top of the roller 2. The old blade sinks (or leaves) the roller or dryer |
1. Refit or add gasket at the back of blade if necessary 2. Replace the old and sunken blade |
| Excessive wear at one end of blade | The displacement of blade is not parallel to the axial direction of roller or dryer | Add gasket, if necessary, move bearing and bracket to adjust scraper parallel to axial direction |
| The blade is worn evenly, but the end face is rough | 1. There is deposit on the surface of roller or dryer 2. The pressure of blade is too high 3. The material of blade is too hard |
1. Use abrasive blade when necessary 2. Reduce the pressure 3. Use a slightly soft blade |
| Excessive wear in sheet area | The sheet leaves sediment on the roller or dryer | 1. Use abrasive blade when necessary 2. Trim the edge of blade frequently 3. Use blade with slotted end to prevent excessive pressure on both ends of roller or dryer |
| Excessive wear out of sheet area | The sheet lubricates the roller or dryer | Use blade with slotted end |
| Local depression | The blade is damaged, electrostatic (discharge/ electrolysis /heating) | Insulate the blade from the holder or use a non-metallic blade |
| The blade produces burr | 1.The material of the blade is too soft 2. The pressure is too high 3. The angle of the blade is too small |
1. Use a slightly hard scraper 2. Reduce the pressure 3. Adjust the bearing or bracket to increase the angle, and use the instrument to check and correct the angle |
The first very effective routine is to change the blade as often as necessary. When the blade is worn, the angle between the blade and the roller will change, thus reducing the cleaning efficiency of the blade. When the width of the blade is worn by 6 mm to 12 mm, the blade needs to be replaced.
The second important component that needs to be paid attention to is the doctor holder. Any damage to the doctor holder will affect the pressure between the blade and the roller, and the damaged doctor holder should be replaced in time.
During each inspection, the pressure device and swing device in operation should be carefully checked. When defects are found, they should be repaired.
| Name | Creping blade |
| Material | HMWPE |
| Epoxy resin | |
| GFRP | |
| Stainless steel | |
| Carbon steel | |
| phosphor bronze | |
| Thickness (mm) | 0.1-8 |
| Width(mm) | 10-15 |
| Length (mm) | As required,Maximum limited to11.5m |
Sun Hong as a professional manufacturer of all kinds of soft packaging and printing paper making doctor blade.
We own professional technical staff, which provide you a full range of solutions in packaging and printing industry related technology equipment for customers.
Our company will stick on good faith principle, pragmatic attitude, to provide high-quality products and service for the domestic printing industry.
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