POLYMER-CONTAINING COMPOSITE PROTECTED ARTICLE Russian patent published in 2019 - IPC B42D25/00 B32B15/08 B32B15/12 B32B27/10 

FIELD: manufacturing technology.

SUBSTANCE: invention relates to counterfeit-proof articles, for example, coins, tokens, medals, and concerns a polymer-containing composite article. Product comprises insert disc made of laminar plastic and outer metal ring. Insert is sheet of paper impregnated with polymer binder collected in packages. Surface of each sheet is coated with polymer layer and contains visual and/or concealed protective elements. Ring and the insert are permanently attached. At least one part of the product has a relief. Product dimensions comply with the following ratios: 0.8≤δ1/δ2<1; D1-D2≥8; 0.3≤S1/S2<0.9; D2>16 mm, Δ≤1, where D1 is an outer diameter of metal ring without allowance for surface-edge, mm, D2 – diameter of insert disc, mm, S1 – area of metal ring without surface-edge, mm², S2 is area of insert disc, mm², δ1 is maximum thickness of metal ring, mm, δ2 - maximum thickness of insert disc, mm, Δ – difference between maximum and minimum protruding elements of metal part of article, mm.

EFFECT: invention provides a higher degree of protection of the product, ease of manufacture and determination of its authenticity.

12 cl, 4 dwg, 4 ex