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Solvent Recovery in Transfer Ribbon Manufacture Disclosure Number: IPCOM000052728D
Original Publication Date: 1981-Jul-01
Included in the Prior Art Database: 2005-Feb-11

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Findlay, HT [+details]


Resins cast in typewriter ribbon manufacture and the like in solutions of dichloromethane (CH(2)Cl(2)) or tetrahydrofuran (THF) are removed by immersing the cast layer directly into a low viscosity mineral oil. The process avoids removal of the solvent by evaporation, thus eliminating the concern that vapor will enter the atmosphere during evaporative extraction.