Abstract

The invention belongs to the field of recycling plastic waste, particularly mixed plastic, recycling of which is very challenging. The invention relates to a device and a method for processing mixed waste plastic (MWP) and products made from mixed waste plastic. The mixed waste plastic comprises at least two of the following plastics: acrylonitrile butadiene styrene (ABS), ABS and glass fibre composite (ABS GF), polycarbonate (PC), polycarbonate and glass fibre composite (PC GF), PC-ABS composite, polyamide (PA), polybutylene terephthalate (PBT), and quartz sand (QS) with granulation up to 3 mm mixed in a selected ratio, which is from 30% : 70% to 60% : 40%. The method comprises the following steps: a) mixing MWP and QS, b) leading the prepared mixture to the extruder comprising a shaft with blades arranged for mixing and moving the material along the extruder, wherein the extruder is heated to a temperature between 200 and 250 °C, c) extruding the material from the extruder to a heated container, heated so that the temperature of the material inside it is between 210 and 240 °C, d) leading the material into a mould inside a press arranged to compress the mould, which presses the material into the desired shape, wherein said mould is cooled so that the product is cooled to a temperature between 60 and 90 °C and hardens.

IPC Classes  ?

• B29B 7/00 - MixingKneading
• B29B 7/42 - MixingKneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with screw or helix
• B29B 7/44 - MixingKneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with paddles or arms
• B29B 7/90 - Fillers or reinforcements
• B29B 17/04 - Disintegrating plastics
• B29C 43/00 - Compression moulding, i.e. applying external pressure to flow the moulding materialApparatus therefor
• B29C 48/00 - Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired formApparatus therefor
• B29C 48/285 - Feeding the extrusion material to the extruder
• B29C 48/395 - Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
• B29C 48/605 - Screws characterised by details of the thread, i.e. the shape of a single thread of the material-feeding screw the thread being discontinuous

Goods & Services

Plastic and sand construction materials; Construction materials of waste plastic and sand; Construction materials made of heat-treated mixture of waste plastic and sand; Products for use in construction made of plastic and sand; Products for use in construction from waste plastic and sand; Products for use in construction made of a heat-treated mixture of waste plastic and sand; Construction panels made of plastic and sand; Waste plastic and sand panels; Panels made of a heat-treated mixture of waste plastic and sand; Plastic and sand paving tiles; Waste plastic and sand paving tiles; Paving tiles made of heat-treated mixture of waste plastic and sand; Plastic and sand bricks; Waste plastic and sand bricks; Bricks made of a heat-treated mixture of waste plastic and sand; Plastic and sand moulds; Mouldings from waste plastic and sand; Castings from a heat-treated mixture of waste plastic and sand; Plastic and sand roof tiles; Waste plastic and sand roof tiles; Roof tiles made of a heat-treated mixture of waste plastic and sand.

Goods & Services

Building and construction materials and elements, not of metal; Works of art and decorations, including sculptures, made primarily of non-metallic mineral materials such as stone, bitumen or concrete, or of substitutes for these; Unprocessed and semi-processed non-metallic mineral materials such as stone, clay, bitumen or concrete, or substitutes for these; Non-metallic transportable buildings; Concrete substitute construction materials; Plastic and sand construction materials; Panels for building construction; Duckboards, not of metal; Wallboards; Construction panels made of plastic and sand; Plastic and sand paving tiles; Cobbles; Breeze blocks; Plastic and sand bricks; Non-metal castings; Plastic and sand moulds; Pantiles; Plastic and sand roof tiles. Development of industrial machinery and equipment; Development of products in the construction industry; Development of building materials; Development of industrial processes in the field of plastic waste recycling; Development of equipment for recycling plastic waste; Development of construction materials from recycled plastic waste; Research in the field of building construction; Research in the field of mechanical engineering; Research in the field of environmental conservation; Plastic recycling research.