What is Paper Machine Pick up Felt

The pick up felt is mainly used for picking up the wet paper sheet from forming section to dryer section. The pick up felt play an important role in the pick up process, normally the paper machine pick up have three type methods is open type pick up, stick paper pick up, and vacuum type pick up.

Application of Pick-up Felt

The pick up felt is very important for stick type pick up. The wet paper sheet on the couch roll will be sticked on the pick up felt and be transferred to press section. It need the felt structure solid, tight woven, felt surface flat, and must singe the felt edge. And It’s very important to clean the felt during paper machine running.

How to Choose Suitable Pick-up Felt?

The pick up felt is better use needle felt. The needle felt have good water filtration performance, not easy to move or break during operation, it’s service life can be more 15-17 days than normal felt, and also can avoid destroy the forming fabric due to the felt blending. Normally the pick up felt service life is around 40 -50 days.

The Importance of Cleaning Pick-up Felt Regularly

Cleaning and removing fibers and fillers adhered to the paper pick up felt is very important.
Blocking the pores of the pick up felt with debris can reduce its water filtration and openness, thereby affecting its ability to attract and transfer wet paper sheets; Due to making the surface of the felt smooth and increasing its humidity, the wet paper sheet does not bond well with the felt. Therefore, it is important to strengthen the washing of paper pick up felt.

Advantages of Pick up Felt

During the paper pick up process, the wet paper sheet does not stretch significantly, resulting in minimal loss of strength. This not only prevents breakage at the rollers, but also reduces the breakage rate of subsequent parts, thus meeting the requirements of high machine speeds;

The paper tension is low. The low requirement for wet strength of wet paper sheets facilitates the operation and management of paper machines, enhancing their adaptability;

Automatic paper collection, easy to operate. For paper machines that operate at high speeds and use high speeds to make straw pulp paper, it is more appropriate to use a closed paper delivery system from the web to the press section in order to reduce breakage.