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Significance and Use
This test method is intended to measure the amount of curl of a carbonless copy paper sheet relative to the flat surface supporting the sample. The test is useful as a quality control method and for predicting field performance.
1.1 This test method covers the determination of the curl of carbonless copy papers, that is, the degree of curvature of a sheet of these papers when exposed to varying conditions of humidity.
1.2 This test method may be used for manufacturing control, development, and research.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D585 Practice for Sampling and Accepting a Single Lot of Paper, Paperboard, Fiberboard, and Related Product
D685 Practice for Conditioning Paper and Paper Products for Testing
E104 Practice for Maintaining Constant Relative Humidity by Means of Aqueous Solutions
F221 Terminology Relating to Carbon Paper and Inked Ribbon Products and Images Made Therefrom
F549 Terminology Relating to Carbonless Copy Products
TAPPI StandardTIS0808 Equilibrium Relative Humidities over Saturated Salt Solutions Available from Technical Association of the Pulp and Paper Industry (TAPPI), P.O. Box 105113, Atlanta, GA 30348; 15 Technology Parkway South, Norcross, GA 30092.
ICS Number Code 85.080 (Paper products); 85.080.10 (Office paper)
UNSPSC Code 14111527(Carbonless paper)