- Contact Person : Ms. zhai lina
- Company Name : Dandong Huaxing Papermaking Machine Co., Ltd.
- Tel : 86-415-7591906
- Fax : 86-415-7591906
- Address : Liaoning,DANDONG,Port industrial Park,Portneigh Boring Industrial estate,dandong city,liaoning Province
- Country/Region : China
- Zip : 118301
paper rewinder
ADVANTAGE:
1.Good quality2.Lower price3.Experienced engineer4.Advanced on technology5.More than 20 years of manufacture history
Unitary Underfeed Rewinder
Unitary underfeed rewinder have two sections: unwind section, slitting and reeling section.
As the slitting and reeling section are all in one frame, so it is called unitary underfeeding rewinder.
As the rider roll and slitter knife roll are independent, there has no roller mark on the surface of paper, so it is fit for reeling the paper with high surface requirement. Underfeed rewinder has the different slitting, reeling principle and structure from the onfeed rewinder, so it can meet the higher working speed requirement.
Working speed: less than 1200m/min
Web width: it can reach to 5000mm
Usually, the rewinder working speed is three times than that of the paper machine.
The unwind section can use the tension control with drive device or pneumatic control, which is decided by working speed. The under reel can be adjusted by hydraulic control or manual operation, which is decided by web width and diameter.
The slitting section is constituted by the top and bottom slitter device, multi-segments guide roll, leading roll, onfeed device, web bowed spreader roll and trim collection system.
The structure of bottom knife is decided by the number of slitting disc (the slitter group) and the accuracy of slitting. When there has fewer discs need to slit it can use the multi independent bottom knife with drive device; when there has many more discs, it can use the integrate bottom knife roll with drive device.
The number of bowed spreader roll is decided by web width. When the width is small, it can put one more movable bowed roll after slitting; when the width is large, it can put one more movable bowed roll before slitting.
The reeling section includes: front and rear support rolls, rider roll, hydraulic lifter, under transfer device and automatic discharge device. According to the different paper grade and working speed, the surface of support roll can be processed by making groove, sand blowing or molybdenum blowing.
The rider roll can use integrate-type or multi-stage type, which is decided by the web width. Hydraulic lifter always uses the hydraulic cylinder through chains drive, the pressure between rider roll and support roll can be controlled by PLC automatically.
Drive section: DC or AC. According to the working speed, it can use single-point drive, double-point drive or triple point drive.
The unitary underfeed rewinder is used widely, which covers a small area, good safety performance and right price.
It is especially fit for the paper machine that working speed is less than 400m/min.
Our company undertakes design, manufacturing, supply, erection and commissioning of paper machines & new Pulp mill and also modernization of existing pulp mill and Paper machines on a turkey basis. We have the necessary capabilities in project engineering, design, manufacturing and project management.Our company has completed many large projects in many countries around Southeast Asia, Middle East and Africa as well. Our clients are worldwide. And we have a high reputation in the
Our company has completed many large projects in many countries around Southeast Asia, Middle East and Africa as well. Our clients are worldwide. And we have a high reputation in the</p><p>industry.</p>industry.
paper rewinder
