LINE FOR PRODUCTION OF ROOFING MATERIAL AND COMPOSITION FOR MAKING ROOFING SHEET Russian patent published in 2013 - IPC B28B15/00 B28B5/00 

FIELD: process engineering.

SUBSTANCE: invention relates to production of construction materials from loose materials polymer wastes and may be used for making tiles and roofing materials, chemically stable coatings for floors, etc. Proposed line comprises storage bin for initial crushed stock, dyes and additives fed in preset amount onto conveyor and into mixer. Therefrom mixed stock is transferred into heater to obtain fused polymer-bearing pulp to be transferred to finished sheet extrusion. Every storage bin incorporates a proportioner to output weight portion on initial stock into common mixing chamber. The latter is composed of rotary drum with ribbed inner wall and vanes on axle and having mixed stock discharge opening to force said mix onto conveyor for mix to be carried into mix heater to obtain viscous fused polymer-bearing pulp. The latter is carried by conveyor onto extruder rolls, extruder outputting finished sheets to be laid onto finished product acceptance station. Mix heater is composed of tubular extruder accommodating vaned shaft to transfer the mix. Extruder tubular housing outer wall is equipped with electric heaters arranged around said housing to heat polymer-bearing mix to pulp at housing outlet.

EFFECT: better manufacturability, simplified and efficient line.

5 cl, 1 dwg