By using Leizhan customized pulp and paper machines and optimal flow system designs, paper plants can make high quality culture paper like writing and printing paper, A4 paper by using commodity wood pulp, white shavings and waste paper as raw materials.
The whole cultural paper production project contains two parts: Stock preparation line and paper making machinery.
Stock preparation line
Firstly, raw material is conveyed into drum pulper for pulping by Chain Conveyor. The large and heavy impurities exist will be removed in High Density Cleaner.
Secondly, to screen and remove various impurities in pulp suspension, you can choose Vibrating Screen, Low Density Cleaner, Mid Consistency Pressure Screen or Inclined Thickener.
Eventually, the waste paper turn into fine pulp after a series of screening and deslagging and it will be conveyed into headbox for paper making.
Paper making machinery
Cultural paper making machinery contains the following parts: Forming part(web end), Pressing part, Drying part, Sizing part, Calendering part, Rewinding part.
Forming part: The fine pulp come into the headbox, and then it will be spread along the felts evenly.
Pressing part: To To squeeze out as much water as possible in pulp by pressing felts which attached on the press roll.
Dryer part: Dryers work in group to ensure it can be operate at a gradually slower speed to compensate for paper shrinkage as the paper dries. It will discharge the water content down to a level of about 6%.
Sizing part: Sizing prevents bleeding of ink during printing, improving printing properties and surface bond strength.
Calendering part: Calender helps to make the surface of sheet more smooth and glossy. What’s more, it ensures consistent thickness of paper.
Rewinding section: To make it easier for shipping and conveying, we use rewinder to shape it into rolls and use slitter to cut the product into multiple strips to meet customers’s requirements.