SEDL / STP / STP133-EB / STP47698S

Conditioning and Weathering of Paper

Willets, William R.
Assistant ManagerChairman ASTM Committee D-6 on Paper and Paper Products, Titanium Pigment Corp., a Subsidiary of National Lead Co., New York, N. Y.

Pages: 7    Published: Jan 1953

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Abstract

The main atmospheric component in the conditioning of paper is relative humidity which determines moisture content. This moisture acting as a plasticizer affects strength, rigidity, and plasticity. Changes in moisture content produce dimensional changes in the fibers which in turn are translated into over-all dimensional changes in the sheet. Examples are given showing the importance of relative humidity in testing, specification, converting, and end use. Other conditioning and weathering factors are discussed.