Paper Machine Press Section

Wet pressing increases sheet dryness in order to ensure adequate paper machine drying capacity and to improve web runnability at the beginning of the dryer section.

Paper machine press section. The most important functions of pressing are to increase sheet solid consistency in order to ensure adequate drying capacity to consolidate. With its latest press section designs and references toscotec has focused on ease of operation and overall plant efficiency. A modern press section should fulfill the following requirements. The task of the paper machine press section is to remove water primarily through wet pressing.

Water removal in the press section of paper board and pulp machines has an important influence on machine efficiency and cost. As the paper passes through the nips the water is pressed out of the sheet into press felts that transport and cushion the sheet on its journey through. The suction press uses mechanical action to extract the water from the paper sheet. Paper machine clothing second edition 103 3 pressing the press section is the next part of the paper machine after the forming section.

The paper web consistency leaving the press section can be above 40. Of the machine wahlstrom 1969. The press section also has a major impact on sheet surface properties such as. A press section machine removes water or moisture from the wooden pulps to make varied range of paper sheets and boards.

Ashok industries amraiwadi ahmedabad near swastik char rasta nagarvel hanuman road amraiwadi ahmedabad 380026 dist. Paper machine press section represent a key area for rebuilds to improve quality of the paper and energy savings. The dewatering capacity of a press section and the properties of paper depend on the design and the number of nips. The risk of web breaks is determined by the general design of press section and the arrangement of open draws if any.

A press section design equation based on the decreasing. The higher the dry content of the paper web after leaving the press section the less energy has to be expended in subsequent drying. The second section of the paper machine is the press section which removes much of the remaining water via a system of nips formed by rolls pressing against each other aided by press felts that support the sheet and absorb the pressed water. A high initial wet strength of the moist paper web after leaving the press also leads to a lower number of breaks especially in the first dryer groups.