FAQ

• Doctor Blade For Paper Production FAQ

  If you need paper doctor blade, please provide the following information:

  1. Where will the doctor blade be used on the paper machine? We can recommend materials according to different parts.

  2. What kind of paper does your paper machine make?

  3. Which company you use for your current doctor blade?

  4. If a carbon fiber doctor blade is required, what is the carbon fiber content? Our regular content is 20%, 40%, 100%. The carbon content used in different parts is also different.

  5. What is the speed of the paper machine?

  6. We can provide you with a trial scraper for free, but you need to bear the international express delivery fee. Please contact us further if necessary.

• What Doctor Blade does Hui zhuo new material group make?

  We have developed blade holders and double doctors for press section and suction couch, craping doctor, cleaning docotor and other doctors.
  

  We are in the leading position in this industry. We also produce the doctor blades such as EPO doctor blade, Superfine doctor blade, Carbon firber doctor blade, HDPE doctor blade, Cotton fiber doctor blade and metal doctors such as Bronze doctor blade, Stainless steel doctor blade, Carbon steel doctor blade and K500.
  

  We can give you the technic consultation as per the meterial of roll, the speed of paper machine and working environment for doctor.

• Do you know the benefits of carbon fiber doctor blades for paper machines?

  Carbon fiber doctor blade: epoxy resin combine with carbon fiber for excellent resistance.

  High temperature resistant, high strength. Mainly used in paper industry , has a special self lubricating effect on equipment, can be compared with the metal scraper with a long service life.
  

  Suitable for all kinds of harsh working environment and no fire equipment, for all kinds of rollers and cylinder face. Also suitable for dry parts, press parts, hard rubber roller for mesh part etc.
  

  It can deal with the rough and hardly cleaning surface.

• Where is the doctor blade used in the paper machine?

  Doctor Blade is used in all parts of the paper machine and board machine to remove excess pollutants, chemical accumulation, paper dust, etc. 

  On the surface of the roll or cylinder, and prevent the paper from wrapping around the roll or cylinder.

  Doctor blades are also used to remove paper from the roll surface during paper breaks or during paper threading.

  Doctor blades must be inspected and cleaned regularly to ensure their continued, safe, and efficient operation. As machine widths and speeds increase, doctor blades play an increasingly important role in cleaning roll surfaces and guiding paper during machine operation.

• Selecting the Right Doctor Blade for Your Paper Machine

  Choosing the right doctor blade for a paper machine application can be a daunting task. There are numerous suppliers with extensive product ranges,  often making the choice difficult. Here are some tips for selecting a doctor blade supplier, finding the right doctor blade for your application, and optimizing the doctor blade runnability.

  
  

  Choosing a Doctor Blade Supplier

  
  

  Doctor blade suppliers should:

  1. Be a partner.

  Be knowledgeable about your paper machine, doctor blade holder, and application needs.

  Have experience across various machine types with varying doctor systems.

  A supplier with these traits can better help you select the right doctor blade for your application.

  
  

  2. How to Choose the Right Blade

  Once you have a supportive doctor blade supplier, there are tips for determining the best doctor blade for your application.

  
  

  3. Determine the position needs for the application. 

  Doctor blades typically serve multiple purposes such as removing water, cleaning contaminants off the roll, shedding the sheet, or conditioning the roll and maintaining proper surface roughness.

  Choose the appropriate material. Consider a blade material that leads to extended blade life, higher temperature resistance, lower friction, higher machine direction stiffness, and/or more cross-machine direction conformability.

  Optimize doctor blade runnability. Additionally, the blade angle and loading may be adjusted, and showering or oscillation may be introduced to provide better doctoring performance.