The Paper Industry
PMI provides the paper and packaging industry with testing equipment and analytical services for applications ranging from measuring the permeability of coated paper to characterizing pulp. These applications utilize instruments in the PMI Porometer and Permeameter product lines.
PMI Analytical Services and PMI Permeameters are invaluable to scientists and engineers searching for the "right" coatings for paper. Determining the appropriate coating for papers used in printing, copying, etc., is crucial in terms of customer satisfaction and cost. Two of the key components in determining the "right" coating are porosity and permeability -- physically knowing how the fiber will interact with the ink. PMI's Permeameter provides data that allow direct correlation between the various coatings and the performance of the paper. Quality of print is often determined by the relative in-plane and through-plane pore diameters. PMI's In-Plane Porometer is ideal for such tests.
Paper, plastic sheets and metallic foils are widely used for packaging and storing in biotech, medical, healthcare, pharmaceutical, food, and beverage industries. One of the requirements of the packaging material is to prevent passage of gases like oxygen to prevent degradation of stored material. PMI instruments like the diffusion permeameter can measure the permeability of gases. Permeation of water vapor can also be measured by PMI's Water Vapor Transmission Analyzer.
Coatings also change the affinity of the paper to water, and often provide water repellency. The PMI Permeameter provides the engineer with the option of measuring the liquid permeability of coated paper. As a result, the paper mill will be aware of the specific properties of the products.
Paper is also commonly used as a filtration medium. If you are using paper as a filter, please consult our information on the Filtration Industry.