FIELD: application of protective films on paper substrates, for example, securities. SUBSTANCE: transfer material is composed of separable (temporary) carrier and petroreflector structure proper. Copolymer of vinylacetate, butylacrylate and acrylic acid which contains 87.0∓ 3.0% of 2.5% hydrogen of melamineformaldehyde resin in encapsulated form is used to form adhesive (binding) layer. EFFECT: improved reliability of material. 1 dwg
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Authors
Dates
1997-12-10—Published
1996-03-15—Filed