Adhesive bonding and miscellaneous chemical manufacture – Delaminating processes adapted for specified product – Delaminating in preparation for post processing recycling step
Patent
1978-06-05
1981-02-24
Lusignan, Michael R.
Adhesive bonding and miscellaneous chemical manufacture
Delaminating processes adapted for specified product
Delaminating in preparation for post processing recycling step
346 11, 3461351, 106 19, 106311, 206214, 206215, 252 791, 252364, 427161, B44C 122, H01L 21312, A45C 1134, B65D 8500
Patent
active
042526019
ABSTRACT:
Transparencies for overhead projection are formed in which the information to be displayed is in the form of transparent lines, or other geometric patterns, on an opaque background. The transparent lines are formed on an opaque layer of a recording material formed from a clear or colored transparency on which the opaque layer is firmly adhered. The opaque layer is formed from finely divided organic styrene resin pigment uniformly distributed in a film-forming binder resin. The writing liquid is formed from a solvent for the organic styrene resin pigment. When the writing liquid is applied to the opaque layer using a suitable writing instrument, such as a pen, the opaque layer immediately becomes transparent where it is contacted with the solvent. The potential toxicity of the solvent (or solvent vapors) is eliminated and writing speeds may be increased by mixing a chlorofluoroalkane of from 1 to 3 carbon atoms with the solvent.
REFERENCES:
patent: 2962382 (1960-11-01), Ives
patent: 3014301 (1961-12-01), Grupe
patent: 3147062 (1964-09-01), Glenn
patent: 3180752 (1965-04-01), Bollinger et al.
patent: 3265524 (1966-08-01), Echeagaray
patent: 3320089 (1967-05-01), Bourgeois
patent: 3642475 (1972-02-01), Vrancken et al.
La Cellophane
Lusignan Michael R.
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