Stock material or miscellaneous articles – Two dimensionally sectional layer – Transparent or translucent layer or section
Patent
1995-08-10
1997-12-30
Ryan, Patrick
Stock material or miscellaneous articles
Two dimensionally sectional layer
Transparent or translucent layer or section
428 402, 428 415, 428 43, 428195, 428207, 428212, 428346, 428914, 156234, 156247, 156257, 156264, 156267, B32B 900
Patent
active
057027900
ABSTRACT:
A water-evaporation process for making thin one-color plastic lettering, as used in sets for computer-cutting and application in spaced array. Water-based plastics, particularly urethanes and acrylics are used instead of polyvinyl chloride. These more flexible films are opaque, resulting from use of large amounts of water-dispersed pigments. After spreading, the water is evaporated, causing the spread mixture to coalesce into a thin tough well-pigmented opaque film. Films less than two mils thick may be formed, free from migratory plasticizers which might cause pigments to migrate or to damage adjacent the flanking layers of adhesives and release films. The water evaporation process, at only about 220.degree. F., requires minimal workplace or environmental safeguards compared to the use of solvent containing systems.
REFERENCES:
patent: 5095069 (1992-03-01), Ambrose et al.
patent: 5312645 (1994-05-01), Dressler
patent: 5441785 (1995-08-01), Liebe, Jr.
Bahta Abraham
Ryan Patrick
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