Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1986-06-30
1988-02-23
Coughenour, Clyde I.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
101473, 156334, B41M 502, B44C 117
Patent
active
047268646
ABSTRACT:
Hectograph master webs and sheets formulated to provide sharper, more-complete transfer under reduced imaging pressures, and sharper, more-numerous duplicate copies in the hectograph duplicating process and resistance to adhesion and coating-transfer under the pressures exerted by a hectograph duplicating machine. The receptive surface formed on the master sheet comprises a hard, pressure-adhesive coating consisting by weight essentially of 45 to 65 percent paraffinic wax, 5 to 20 percent hard wax and 15 to 40 percent polybutene polymer having a Staudinger molecular weight of from 10,400 to 12,300 which bonds to the hectograph transfer layer under relatively low, localized imaging pressure but which is sufficiently hard to resist adhesion, sticking and pick-over to hectograph copy sheets during the hectograph copying processes. The receptive coating also provides a barrier against the migration of the hectograph composition and/or of the spirit duplicating fluid into the master sheet.
REFERENCES:
patent: 2610939 (1952-09-01), Fisher
patent: 3117101 (1964-01-01), Moyer
patent: 3410711 (1968-11-01), Hoge
patent: 4018162 (1977-04-01), Sharkey
patent: 4456649 (1984-06-01), Clarke
Brown Albert E.
Emerson Robert T.
Coughenour Clyde I.
Green Clarence A.
Leedall Products Incorporated
Perman Marley R.
Tully Thomas L.
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