.Preparation for Super Calendering
DATE：2020/1/13 9:03:03 / READ： / SOURCE：This station
.Preparation for Super Calendering
The start of the paper picking operation starts with the unloaded paper roll loaded in the paper ejection rack, and then the sliding clutch is connected to prevent the friction. Cut out the tail of the collar paper obliquely on the outer layer of the paper roll. With the assistance of the assistant, the operator leads the paper tail past the top roller of the super calender and passes through each nip in turn. Before entering the next nip, a short piece of paper sufficient for the operator to transport is added one by one Enter the nip at right angles. This transfer method continues until the supercalender is fully loaded with paper. The current practice on many paper grades is to use a collar or platen roller to make the paper possible to adapt to the effect of the previous nip before entering the next nip.
The reason why paper is hard
This eliminates stress creases and possible calenders (a kind of paper disease). In a high speed super calender, the paper from the first three nips is brought into contact with a stretching roller located between the nip and the platen roller. The platen roller and the stretcher roller are installed in adjustable bearings so that their movements match the operating conditions of the paper sheet.
The paper is fed into a super-calender with the surface to be finished in contact with the metal roller. Responsible for adjusting the operation with the assistant when receiving the paper, one at the back and the other at the front
When picking the paper, the operator is located on a reel that rotates on the control panel in parallel. At the same time, he helps to lead the paper tail from the super calender to the reel, and then winds the On the shaft. In the case of automatic continuous calendering,
heat
The rewind tensioner begins to wind on an empty reel or core tube.
3. Super Calendering of Paper
The next step is to accelerate the super calender and apply the appropriate pressure. The speed is based on the paper permitting, that is, it is required to be able to inspect and eliminate the root cause of paper creases. Once you are sure that the root cause of paper sickness has been eliminated, you can use operating speed and operating pressure. From this point on, the operator's attention will turn to the warning signal flags that monitor the web's operation and require proper decompression (or at least slow down) when there are joints, tears, or paper problems. During this time, the operator should prepare the next unprocessed paper roll at the exit bin.
When the paper is super-calendered, the lack of experience or knowledge of the quality of super-calendering, it is necessary to find out the best conditions through trial and error, so frequent startup and shutdown may be required.
With the modernization of equipment and operating procedures, as well as technological advances in the field of coated paper, downtime has been rapidly reduced to a minimum.
What helps to reduce the time loss of super calender is mainly the cooperation of paper mills in making necessary changes and adjusting operating procedures to ensure that high-quality paper is provided to the super calender. Many paper mills have taken steps to document the causes of super press shutdowns daily and take quick steps to eliminate them.
Some factories that produce super-calendered paper in large batches prepare paper rolls with a surface rewinder before super-calendering. Interruption of downtime on super calender
time. thousand,
Another way to help increase production in supercalenders is to eliminate the trial and error approach of experimenting in supercalenders and to place coated paper technology under the control of experimental technicians. Work with the operator to develop the best procedure. Such laboratories are equipped with test work from start to finish (including printing effects on products). Super calender
The start of the paper picking operation starts with the unloaded paper roll loaded in the paper ejection rack, and then the sliding clutch is connected to prevent the friction. Cut out the tail of the collar paper obliquely on the outer layer of the paper roll. With the assistance of the assistant, the operator leads the paper tail past the top roller of the super calender and passes through each nip in turn. Before entering the next nip, a short piece of paper sufficient for the operator to transport is added one by one Enter the nip at right angles. This transfer method continues until the supercalender is fully loaded with paper. The current practice on many paper grades is to use a collar or platen roller to make the paper possible to adapt to the effect of the previous nip before entering the next nip.
The reason why paper is hard
This eliminates stress creases and possible calenders (a kind of paper disease). In a high speed super calender, the paper from the first three nips is brought into contact with a stretching roller located between the nip and the platen roller. The platen roller and the stretcher roller are installed in adjustable bearings so that their movements match the operating conditions of the paper sheet.
The paper is fed into a super-calender with the surface to be finished in contact with the metal roller. Responsible for adjusting the operation with the assistant when receiving the paper, one at the back and the other at the front
When picking the paper, the operator is located on a reel that rotates on the control panel in parallel. At the same time, he helps to lead the paper tail from the super calender to the reel, and then winds the On the shaft. In the case of automatic continuous calendering,
heat
The rewind tensioner begins to wind on an empty reel or core tube.
3. Super Calendering of Paper
The next step is to accelerate the super calender and apply the appropriate pressure. The speed is based on the paper permitting, that is, it is required to be able to inspect and eliminate the root cause of paper creases. Once you are sure that the root cause of paper sickness has been eliminated, you can use operating speed and operating pressure. From this point on, the operator's attention will turn to the warning signal flags that monitor the web's operation and require proper decompression (or at least slow down) when there are joints, tears, or paper problems. During this time, the operator should prepare the next unprocessed paper roll at the exit bin.
When the paper is super-calendered, the lack of experience or knowledge of the quality of super-calendering, it is necessary to find out the best conditions through trial and error, so frequent startup and shutdown may be required.
With the modernization of equipment and operating procedures, as well as technological advances in the field of coated paper, downtime has been rapidly reduced to a minimum.
What helps to reduce the time loss of super calender is mainly the cooperation of paper mills in making necessary changes and adjusting operating procedures to ensure that high-quality paper is provided to the super calender. Many paper mills have taken steps to document the causes of super press shutdowns daily and take quick steps to eliminate them.
Some factories that produce super-calendered paper in large batches prepare paper rolls with a surface rewinder before super-calendering. Interruption of downtime on super calender
time. thousand,
Another way to help increase production in supercalenders is to eliminate the trial and error approach of experimenting in supercalenders and to place coated paper technology under the control of experimental technicians. Work with the operator to develop the best procedure. Such laboratories are equipped with test work from start to finish (including printing effects on products). Super calender
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