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Paper Machine open type headbox

Open headbox (with two-distribution rolls) stock flow process,perforated rolls and other mainly equipment are similar with air-cushion headbox. A gravity head of stock is used to give the corrected by pond level.Open headbox‘s work speed is mainly slow.

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Open Type Headbox


Open headbox (with two-distribution rolls) stock flow process,perforated rolls and other mainly equipment are similar with air-cushion headbox. A gravity head of stock is used to give the corrected by pond level.Open headbox‘s work speed is mainly slow.




Application


lt's suitable for the paper machine with working speed 80-280m/min as the requested design.


Features

1.The pulp level in the box is used to control the speed of online pulp (pulp speed), which is usually controlled by adjusting the height of weir plate in the box

2.Equipped with dial gauge for fine tuning.

3.Paper web Lateral directional difference is士1%-2%

4.lt consists of cone duct cloth paste, organic glass, spiral hole diffusion step, before the rectifier roll overflow, the upper lip plate adjustment and upper lip plate spinner indicator.

 图片1


Key parameters

Adaptive speed : 80-280M/min (designed on requirements)

For example: 1800/200 Open Type Headbox

 

Paper kinds

Kraft paper, fluting paper

Raw material

wood pulp, waste paper

Working speed

90-180m/min

Design speed

200m/min

Quantitative

100-190g/㎡

Spout width

2100mm

Pulp inflow consistency

0.4%-0.8%

Dryness of finished paper

93%

Beating degree

20-50°SR

Diameter of breast roll

D400

Headbox bottom rail gauge

2700mm

Machine type

Left hand machine

 


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