Paper Machine Blind Hole Press Roller Rubber Coated 600-1700mm Diameter
Product Description
The Blind Hole Press Roll features numerous drilled holes of specific depths on its surface, typically arranged in two or three different depth sizes. These holes do not connect to the atmosphere or vacuum system, hence the name "blind hole".
Blind Hole Press Roll Basis Information
The pressing system utilizing blind hole press rolls is called blind hole press. These rollers are either rubber-coated or polyurethane-coated on an iron roller core. The rubberized surface contains blind holes measuring 2mm in diameter and 12-15mm in depth, which can also be drilled in different depths with alternate row arrangements.
- Opening rate of approximately 25%-30%
- Hole volume about 5 times larger than groove press rollers, accommodating more squeeze water
- Solid parts are more durable than groove pressure rollers
- Can be covered with softer layers (70-90 Shore hardness) to reduce felt wear
- Provides wider nip for increased pressure line pressure
- Allows significantly more regrinding compared to grooved rollers before requiring recoating
Blind Hole Press Roll Parameters
| Parameter |
Specification |
| Bearing center distance |
3500-11000mm |
| Working width |
3000-9000mm |
| Diameter |
600-1700mm |
| Rubber thickness |
15-40mm |
| Shell material |
Cast steel / Stainless steel |
| Shaft |
Cast steel / Stainless steel |
| Hole diameter |
2.7-3mm |
| Drill hole depth |
7-9mm |
| Hole area rate |
22-30% |
Blind Hole Press Roll Function
The primary function in the press section is mechanical dewatering of the fiber mat. Increasing dry content before the dryer section reduces energy requirements, making the paper manufacturing process more efficient and cost-effective. The blind hole design maximizes dewatering efficiency for optimal performance.
About Huatao Group
Founded in 2008, Huatao Group is a professional supplier with over 15 years of experience providing rollers for:
- Paper industry: forming rollers, vacuum couch rollers, press rollers, dryer cylinders, and more
- Plastic & rubber industry: chill rollers, treatment rollers, winding cores, and coating drums
- Nonwoven fabric industry: cylinder rollers, guide rollers, and embossing rollers
Our products are exported to over 96 countries with excellent reputation. We specialize in custom solutions, matching superior quality to specific requirements while ensuring customer satisfaction throughout the product lifecycle.
