Accession Number : AD0712268

Title :   TORKNING AV PAPPER MED MIKROVAGENERGI (Drying Newsprint with Microwave Energy),

Corporate Author : SVENSKA TRAFORSKNINGSINSTITUTET STOCKHOLM

Personal Author(s) : Andersson,Nils ; Gardh,Henry

Report Date : 15 JAN 1969

Pagination or Media Count : 5

Abstract : Running wet webs of newsprint were dried using a laboratory microwave drier with a maximal effect of 2 kW. The studies included two advantages offered by this drying method, namely the adjustment of the final moisture content in the web and the leveling out of wet streaks. Further the properties of microwave dried paper were compared with those of the same web dried in a multi-cylinder drier. The possibility of automatic adjustment of the final moisture content in the web was found to be good which was indicated as a rapid decrease in the drying efficiency within the moisture ratio interval 0.10--0.05. A wet streak with a moisture ratio of 0.27 which was sprayed on a web with a moisture ratio of 0.09 was removed when drying to the moisture ratio 0.07. The properties of the paper were not found to be deteriorated by the use of the microwave drier. (Author)

Descriptors :   (*PAPER, MANUFACTURING), NEWSPAPERS, MOISTURE, DRIERS(APPARATUS), SWEDEN

Subject Categories : Wood, Paper and Related Forestry Products
      Mfg & Industrial Eng & Control of Product Sys

Distribution Statement : APPROVED FOR PUBLIC RELEASE