Filtration of coatings for SAPPI – PVDC Dispersion

  • Filtration of coatings Siga Filtration

Sappi is a global diversified woodfibre company focused on providing dissolving pulp, packaging and speciality papers, graphic papers, as well as biomaterials and biochemicals. 

 
APPLICATION
We were approached by SAPPI to filter their aqueous PVDC dispersion which is a water based coating used in packaging of drugs, foods and cosmetics to increase shelf life due to its excellent moisture and gas barrier properties. In order to ensure a good coating the solution must be free of any contaminants. PVDC dispersions can form skin, coagulate when exposed to air and collect particulates during tanks transfers, mixing and handling. 
 
SOLUTION
Siga Filtration offered ALSI bag filter housings with our acuraBag filter bags to filter out contaminants.
 
This filter was installed after the process pump and before the coating entered the process to ensure a contaminant free solution prior to application.  ALSI bag filter housings were supplied with acuraBag felt type filter bags to provide better retention of deformable particles (skin, coagulates). 

 

WHY USE SIGA FILTRATION
– Process knowledge and expertise. We can help with filter selection at all stages of process development and optimisation. 
– Comprehensive range of filtration products allows us to select the best filter for your application.
– Capability to offer customised filtration solutions. 
– All filtration products comply fully with latest regulations
WHO WE WORK WITH
NEED A FILTRATION SOLUTION

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