PLASTIC MULTILAYER EXTRUDED ARTICLE PRODUCED BY WELDING IN ELECTROMAGNETIC ALTERNATING FIELD Russian patent published in 2011 - IPC B29C65/14 

FIELD: process engineering.

SUBSTANCE: set of invention relates to plastic multilayer extruded article and to method of its production. In producing said article weld joint is made using plastic material that comprises nanoscalar magnetic oxide particles with non-sintered super paramagnetic domains and consisting of aggregated primary particles. Note here that said primary particles are formed from magnetic domains of metal oxides with diameter of 2 to 100 nm in nonmagnetic matrix of metal oxides or metalloid oxides.

EFFECT: plastic materials that may be welded in electromagnetic field.

15 cl, 1 dwg, 3 ex, 1 tbl