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William K. Donaldson, Werner Wilke and Hans Fetzer received US Patent No. 3,634,568 on January 11, 1972, filed April 14, 1969.
The patent's abstract:
CONTINUOUS STRAND PRODUCTS OF ASBESTOS ARE PRODUCED BY DISPERSING ASBESTOS IN WATER TO PROVIDE A FIBROUS ASBESTOS DISPERSION OF FILM-FORMING CONSTITUTION, THEN CONTACTING THE DISPERSION WITH AN ENDLESS CARRIER WHILE MOVING THE CARRIER IN A GIVEN DIRECTION AND WETTING THE CARRIER WITH COAGULATING LIQUID AHEAD OF THE CONTACTING LOCALITY. A FILM OF ASBESTOS DISPERSION IS THUS ENTRAINED BY THE CARRIER AND COAGULATES AT THE FACE CONTACTING THE CARRIER. THE OTHER FACE OF THE FILM IS SUPPLIED WITH FURTHER COAGULATING LIQUID. WHEN THE FILM IS FULLY COAGULATED IT IS STRIPPED FROM THE CARRIER. PREFERABLY THE FILM IS THEN TWISTED TO YARN DURING ITS CONTINUING TRAVEL. SEVERAL NARROW STRAND COMPONENTS CAN THUS BE PRODUCED BY CONTACT ENTRAINMENT IN PARALLEL RELATION TO EACH OTHER AND ARE THEN TWISTED ABOUT EACH OTHER TO FORM THE YARN.
- Author
- William K. Donaldson; Werner Wilke; Hans Fetzer
- Published by
- US Patent Office
- Series
- US Patent No. 3,634,568
- Date
- January 11, 1972
- Library no.
- ACL Doc 23507 · asbestosclaims.law/library/23507
- Rights
- US government work, in the public domain.
Read or download
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Where it was listed
- Asbestos, June 1972, in its patents department (the year's issues)
Cited on this site
Cite this document
William K. Donaldson, Werner Wilke, Hans Fetzer. “Production of coherent bodies from asbestos dispersions (US Patent 3,634,568, 1972).” January 11, 1972. US Patent No. 3,634,568. US Patent Office. AsbestosClaims.Law Library, ACL Doc 23507. https://asbestosclaims.law/library/23507.
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