HDPE Glass Carbon Fiber Epoxy Creping Doctor Blade for Cleaning Rolls

Product Description

Paper Machine Doctor Blade

Doctor blade is an important element in paper machine functionality, sheet quality and productivity. Doctors are basically scraping equipment required in many positions on a paper machine and coater to remove contaminants or water from the rolls and for special functions like creping and coating.

Function

Function of Doctor Blade

1. Removal sheet from the surfaces of cylinders and rolls.
2. Cleaning the surface of the rolls and dryer cylinders.
3. It adapts to the different characteristics of paper and the operating conditions of the paper machine, thus ensuring the quality of paper and production efficiency.

Different Material Application

Forming Section

Press Section

Fiberglass: microfiber combined with flexible expoy resin,excellent adhesion to roll surface , excellent chemical property, 185 degree temperature resistence.
HDPE : 80 degree temperature resistence.
Expoy Resin:excellent chemical resistance expoy resin, excellent wear resistance, 160 degree temperature resistence.

Glass Fiber: Microfiber combined with flexible expoy resin, excellent adhesion to roll surface, excellent chemical property, 185 degree temperature resistence.
Carbon Fiber:We have 20%,40%,60%,100% carbon fiber doctor blade. Blades and roll surface have excellent adhesion, 185 degree temperature resistence.
Stainless Steel: Quenched stainless steel (containing 13% chromium), hardness HRC 42-46, standard thickness 1.2mm, also can customized.
Expoy Resin:Microfiber combined with epoxy resin ,excellent chemical properties,185 degree temperature resistence.

Expoy Resin Material

Carbon Fiber Material

HDPE Material

Application: Various rollers from the wirese ction to the winding section.
Excellent chemical properties, 185℃ temperature resistance.

Application: Ceramic rolls, mirror rolls and soft calender rolls.

100% carbon fiber pressed. Extremely strong self-lubricating 185°C temperature resistance. 

Application: Wet section ,soft cots, polyurethane rollers, etc.

80°C temperature resistance, molecular weight 8million.

Dryer Section

Reels & Calender Roll

Expoy Resin:Microfiber combined with epoxy resin ,excellent chemical properties,185 degree temperature resistence.
Phosphor-bronze:Softest in all metal blades, better removing dirt, less damaging rolls.
Carbon Fiber:We have 20%,40%,60%,100% carbon fiber doctor blade. Blades and roll surface have excellent adhesion, 185 degree temperature resistence.
Stainless Steel: Quenched stainless steel (containing 13% chromium), hardness HRC 42-46, standard thickness 1.2mm, also can customized.
Carbon Steel: Quenched carbon steel ( carbon content 0.75%)

Glass Fiber: Microfiber combined with flexible expoy resin, excellent adhesion to roll surface, excellent chemical property, 185 degree temperature resistence.
Carbon Fiber:We have 20%,40%,60%,100% carbon fiber doctor blade. Blades and roll surface have excellent adhesion, 185 degree temperature resistence.
Phosphor-bronze:Softest in all metal blades, better removing dirt, less damaging rolls.
Stainless Steel: Quenched stainless steel (containing 13% chromium), hardness HRC 42-46, standard thickness 1.2mm, also can customized.
Carbon Steel: Quenched carbon steel ( carbon content 0.75%)

Phosphor Bronze

Carbon Steel

Stainless Steel

Precision copper alloy blade.

Quenched carbon steel (carbon content 0.75%) Hardness:HV470-520.

Quenched stainless steel (containing 13% chromium

Hardness: HRC42-46 Standard thickness:1.2mm

How to Protect Doctor Blade

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

Production Equipment

Quality Test Before Shipping

Packing & Shipping

1.Bubble Film and waste thick fabric wrapping while protecting inside fabric.
2.Wrapped special fabric package outside(air shipping).
3.Composite wooden box(sea shipping).

Company Profile

SUN HONG PAPER TECH XUZHOU LTD

Sun Hong Paper Tech was established in 2010 and is located in Xuzhou City, Jiangsu Province. It is a production and manufacturing enterprise that integrates industry and trade. We mainly produce and supply products related to the paper and pulp industry. In the early stage, we mainly produced press felts, forming fabrics, and dryer fabrics, and had our own production factory and technical team. With the recognition and trust of our customers in our products,our business scope has expanded from paper machine clothing to almost all parts related to the paper industry, and has established long-term cooperative relationships with multiple domestic equipment factories, possessing a sound quality control system and the power to participate in pricing, we provide customers with high-quality products and preferential factory prices. We also have engineers team with over 30 years of experience in the paper industry,so we can provide professional technical support and services to customers. Sun Hong has sufficient production and technical strength. In 2019 and 2021, we successfully contracted two turnkey projects for kraft paper machines in Bangladesh, which received unanimous praise from customers.

Self Owned Factory

Globe Customer

Screen basket

Refiner plate

Paper Machine Clothing (press felt, forming fabric, dryer fabric)

Doctor Blade

Spray Nozzle........

We participite international exhibition every year.

Visiting customer's factory and provide after service for our customer.

Professional technicial design

Full process quality test.

FAQ

Q: What's the lead time for orders?
A: Standard product in 15 days; customized units require 30–45 days.

Q: Do you provide after-sales service?
A: Yes, we have professional after sale service.

Q: Can I request a customized bucket size?
A: Absolutely! We offer tailored attachments.

Q: What documents do you provide for export?
A: Full export package (Commercial Invoice, Packing List, Bill of Lading, COC, etc.).

Q: How do I place an order?
A: Contact us via email/phone for a quote, then confirm with a PO.