Rubber Cover Expander Roll Banana Roll Wrinkle Removing Bow For Converting Machine

Expander roll basis information

Expander roll is known as Spreader Rolls, Bowed Rolls, Curve bar Expanders, Banana Rolls, Camber Rolls, and Wrinkle removing Rolls.

Most of the expander rolls are driven by web tension itself without any extra drive. Used in Textile processing machines, Plastic converting machines, Paper Industries, manufacturing, processing, printing, laminating, coating, Batching, Winding, and Re-Winding.

Expander roll specification

Expander roll working principle

The difference between normal straight roller and expander roller is whether the axis has radian. In fact, we can think of a normal straight roller as a special expander roller with an axis radius of infinite days. In the process of paper production and processing, due to the shrinkage force of paper cross-section, the paper often appears wrinkles during operation. In the application of the arc roller, when the coil is close to the entrance span L of the arc roller, the edges of both sides of the paper begin to tilt towards the end of the corresponding arc roller, and then slowly stretch the paper to obtain the tension effect, so as to prevent wrinkling. When the paper contacts the surface of the curved roller, the edge of the paper will move further, so that every point of the paper is transported perpendicular to the roller surface.

Expander roll with hard chrome: deliver big torque, good sealing,rotate freely, not to come out of the joint, no leakage of oil.

Expander roll with rub cover: resist ofabrasion,long work life.Adopt unique structure on the both end of the roll to ensure the cover not to expansion and contract.

Expander roll function

Expander roll is widely used for paper, film, texitiles and similar machine and equipment.

In the process of paper production and processing, due to the shrinkage force of paper cross-section, the paper often appears wrinkles during operation. And the bow roll in the paper wrinkle has superior performance. The main function of the tension roller in the transverse direction is the anti crease function. The selection of the arc roller will determine the tightness of the paper, thus affecting the anti wrinkle effect.

Expander roll features

1. Bearing ring for internal structure.
2. Bearing installed in the rubber sleeve, resulting in small swing torque.
3. Smooth rubber surface without any negative impact in the material.
4. Roller face angle can be adjusted freely.

5.Better high temperature resistance, abrasion proof, anti-adhesive, and easy to clean.
6.The highest speed:2000m/min.
7.Different surface processing methods, such as Sand-blasting,Chrome plated,cover grooving.Special executions upon request.
8.Suitable machine: Cutter machine,Re-reeling machine,coating machine and paper machine.

About us

Huatao Group was founded in 2008. We are a professional and leading supplier of various rollers for paper machine, corrugator, rubber & plastic industry, nonwoven fabric industry over 15 years of experience.

Paper Industry: forming roller, vacuum couch roller, dandy roller, breast roller, rubber press roller, stone press roller, rubber roller, dryer cylinder, size press roller, calender roller, pope reel roller, spreader roller, embossing roller.

Plastic & Rubber industry: chill roller, MDO preheating roller, MDO nip roller, MDO stretching roller, PRS cooling roller, corona treater roller, corona treatment nip roller, flame treatment roller, CFRP contact roller, CFRP tension roller, CFRP nip roller, winding core, coating drum, cooling drum, spreader roller, anilox roller, calender roller, embossing roller.

Nonwoven fabric industry: cylinder roller, doffer roller, CFRP guide roller, embossing roller, cooling roller, spreader roller.

With a strong commitment to innovation, reliability, and customer satisfaction, Huatao Group has become a trusted provider in the industry and our products have been exported to more than 96 countries and have a good reputation.

Huatao understands that each customer may have different requirements, which cannot meet from one factory, but we can meet, we are also familar with domestic factory advantages with matching superior quality and help customer not walk bend road.

We pursue each customer is buying and using HUATAO products with a rest assured heart and service is never end.