Coefficient of Friction Testing
Slide Angle Friction is a measurement of a sheet like substrate such as paper, corrugated, plastic film or paperboard that determines the angle of inclination at which one substrate affixed to a sled will begin to slide/slip against another substrate of a similar material.
During a test, an inclined plane is increased at a rate of 1.5 ± 0.5º per second by an electric motor until the test block begins to slide. The initial movement of the sled is the Slide Angle or Coefficient of Static Friction of the material. When the test block just begins to slide a photo-optical sensor automatically stops the inclined plane and the operator can read the slide angle result.
A variety of factors can affect the Slide Angle measurements including abrasion, coating, varnishes, printing and most importantly humidity.
Water absorptiveness of paperboard or other materials is a function of various characteristics such as sizing, porosity, etc. The Gurley-Cobb sizing test can be used to test absorption or resistance of water, oil and other liquids.
Trials are a critical step in the success of any project and Jain Chems philosophy is to work intimately with customers to assure that all variables are considered before a trial investment is made. Our team of chemists and engineers are trained to understand how Ulterion® brand products respond to different process conditions and work with customers to develop trial plans that meet performance objectives. Our goal is to help our customers in every way possible to make every trial a success.
Air Permeability Testing
Jain Chem uses Gurley Densometers that are the accepted standard for measuring the porosity of materials such as papers, textiles, plastics and membranes. All Densometers measure the time required for a given volume and of air (25cc to 400cc) to flow through a standard area of material being tested under light uniform pressure. Conform to TAPPI T-460, ASTM D-726-58 & APPITA/AS 1301-420, BS 5926, CPPA D-14, ISO 5636/5, D-202-77, SCAN P-19 & P-53.
High Pressure Densometers are the accepted standard for measuring the porosity, air-permeability or air-resistance of materials having low permeability. Typical materials include coated papers, plastics and membranes. High Pressure units are recommended whenever a standard unit would yield excessive measurement times. Conform to TAPPI T-536-88 and ASTM D-726-58, Method B.