Department of Home Economics
This investigation was limited in scope to strength, appearance and color change. The polyester/cotton cases did maintain strength for this specified period but other physical properties which were not measured could be important such as pilling and tear strength after longer wear. The cases were not worn to destruction by 45 launderings. They apparently have a much longer wear period.
cotton pillow cases, polyester pillow cases
South Dakota Agricultural Experiment Station, South Dakota State University
Sivers, C. R. and Lund, L. O., "Polyester/cotton for pillow cases" (1974). Research Bulletins of the South Dakota Agricultural Experiment Station (1887-2011). 619.