紙の伸縮挙動について
「紙の伸縮安定性に関する研究」第5報
1979 年 33 巻 8 号 p. 529-535
詳細
1979 年 33 巻 8 号 p. 529-535
This paper is intended to measure the moisture content under the various humidity and temperature and shrinking stress during desorption for handmade sheets and laboratory foundrineir machine made sheets.
The relation between the stress and moist-expansivity was also discussed for above mentioned sheets. The results obtained are summerized as follows :
1) Under the same relative humidity, papers showed slightly higher moisture contents at lower temperature in the range of 10°C to 40°C. However, moist-expansivity of the papers were not affected by temperature.
2) There was good correlation between relative humidity and stress of papers during desorption.
3) Stress of papers during desorption varied depending on the wood species, pulping process and the degree of beating. But the relations between shrinking stresses during drying and desorption were not different in these pulps.
4) Moist-expansivity of papers depended on the drying process, however, stress during desorption was not affected by drying process.
