Paper Making Doctor Blade for Yankee Dryer Cylinder

Product Description

Product Description
Leizhan offers a comprehensive range of doctor blades for all types of machine positions and process needs. The continuous testing of blade materials and development of blades ensures the reliability and high quality of our doctor blades.
All our blades are ranged according to their functionality. Economy range blades are designed to meet today's quality demands at competitive prices. Doctor blades in the Durability range are designed for maximum blade lifetime. The Performance range includes blades with specific superior features like low friction, high heat resistance or effective cleaning properties.
Product Parameters

Material	HDPE--Polymer blade
Major uses	Suitable for rubber rolls in wet end and polyester rubber rolls.
Key Features	Molecular polyethylene: promoting lubricity blade and suitable for the wet end.
Temperature resistance	over 80 centigrade.
Molecular weight	6 million.

Material	EP/Resin blade
Major uses	Suitable for all rolls from mesh fabric to automatic paper-reel.
Key Features	Microfiber and epoxy fiber, with very good chemical resistance.
Temperature resistance	185 centigrade.

Material	2C--Carbon fiber blade
Major uses	Suitable for ceramic rolls, dryer rolls, ebonite rolls.
Key Features	Carton fiber 20%. Epo-glass fiber, with better lubricity and anti-abrasion.
Temperature resistance	185 centigrade.
Bending strength	600N/mm2.

Material	4C-Carbon fiber blade
Major uses	Suitable for drying rolls with stickies.
Key Features	Epo-glass fiber, ultra-fine fibre glass and super-fine carbon grinding. Chemical-resistance: very good.
Temperature resistance	185 centigrade.
Bending strength	760N/mm2.

Material	100C--Carbon fiber blade
Major uses	Suitable for ceramic rolls, dryer rolls, Ebonite rolls.
Key Features	Carton fiber 60%. It is made of Epo-glass fiber, with good lubricity and anti-abrasion.
Temperature resistance	185 centigrade.
Bending strength	790N/mm2.

More material and types doctor blade, please contact us.
Our doctor blade is worthing trying! Detailed Photos
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Packaging & Shipping

Installation Instructions
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

Company Profile
LEIZHAN is a China Based engineering company and machinery supplier committed to offer complate solution and provide high-cost-performance equipments related to stock preparation and paper-making industry. With advantage technology and excellent equipment,we provide one-stop service from consultation,process design and optimization,manufacture,installation,commissing and personnel training and so on. At the same time,we can supply all kinds of stock preparation and paper making equipment and accessories.
For years,we have insisted on taking customer's value as our center and having strict quality-control and innovation in the whole process.
Our products have reliable quality and superior performance and have been exported to Poland,Greece,Turkey,Iran,India,Packistan,Bangladesh,Thailand,Indonesia,Philippines,Malaysia,Vietnam,Mexico,Guatemala,Costa Rica,Columbia,Egypt etc.
We have established long-term cooperation relationship with many paper mills and agent.
Honesty,cooperation and win-win are important to us.We insisted on serve our customers with high quality products,sincere service and good reputation.We are appreciated for the long-term trust and favor from our customers.Hope we can cooperate sincerely and make progress together with our new and old customer.

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