COMPOSITE PROFILE AND PREPARATION METHOD THEREOF Russian patent published in 2017 - IPC B32B27/20 

FIELD: chemistry.

SUBSTANCE: invention relates to composite profile made of aluminium, plastic using secondary raw material. Described is a composite profile, comprising a core made of mineral substances, vegetable fibres, additives and plastic of a single type, characterised by that plastic core consists of plastic wastes, as additives contains maleic anhydride MA, and on external surface of core there is a protective layer, which fully covers outer surface of core and is formed by a layer of not used plastic of single type, wherein plastic protective layer and plastic core are related to same type, wherein core and protective layer are made on principle of coextrusion, wherein core and protective layer are integrated with each other only due to production on principle of coextrusion, wherein outer side of protective layer on opposite side of composite section is lined with decorative layer of aluminium foil. Also described is a method of making composite profile.

EFFECT: technical result is obtaining high-quality construction profiles by coextrusion, which have strong connection, long service life, are durable and are widely used.

7 cl, 6 dwg, 5 ex