Defining the Strength of Paper: How Many Tests Are Enough?, 1995 Process & Product Quality Conference Proceedings
Roger H. Van Eperen
Institute of Paper Science and Technology
Paper is tested to define the product being manufactured, to provide guidance in controlling the manufacturing process, to determine compliance with customer specifications, and to measure progress in product development and research. The preferred system of defining paper properties is in fundamental terms. However, many fundamental properties are not easily defined and/or measured. Hence, most commonly measured paper properties are determined from arbitrarily defined systems of measurements for which interlaboratory agreement is difficult to achieve. It is suggested that too many arbitrarily defined properties are sanctified in TAPPI test methods. Many of these are no longer relevant, or have been replaced by improved technology. Tappi should take a leading role in removing these outdated methods from its’ collection. ---------------------------------------------