Polymer composition from mixed plastic waste

Abstract

A polymer composition from mixed plastic waste is disclosed. The composition comprises plastic waste of different types obtained from recycled unidentified, uncleaned, unsorted, compacted and homogenized plastic waste. Preferably the plastic waste comprises polyethylene (PE), approximately 50-60% of its total volume; polypropylene (PP), approximately 20-30% of its total volume; polystyrene (PS), approximately 5-10% of its total volume; a mixture of unidentified plastic and other materials, approximately 1-10% of its total volume. The mixture of unidentified plastics comprises polyamides (PA), Polyethylene terephthalate (PET), Polyacetal (POM), and Polycarbonate (PC).

What is claimed is: 
     
         1 . A polymer composition from mixed plastic waste, comprising plastic waste of different types, wherein the polymer composition is obtained from recycled unidentified, uncleaned, unsorted, compacted and homogenized plastic waste of small volume weight, comprising:
 polyethylene (PE), approximately 50-60% of its total volume;   polypropylene (PP), approximately 20-30% of its total volume;   polystyrene (PS), approximately 5-10% of its total volume; and   a mixture of unidentified plastic and other materials, approximately 1-10% of its total volume.   
     
     
         2 . The polymer composition from mixed plastic waste according to  claim 1 , wherein the polymer composition has the following properties:
 Density of the material in agglomerated phase: 380-450 kg/m 3 ;   Density of the material in melted and solidified phase: 950-1050 kg/m 3 ;   Melt flow index (g/10 min.): 1-5;   Melting temperature: 165-180° C.;   Color: grey;   Moisture content: below 1%;   Fraction size: up to 10 mm;   Tensile modulus (Elongation 50 mm/min): 642.76-854.28 MPa;   Tensile stress at maximum load (Elongation 50 mm/min): 14.6-17.01 MPa;   Flexural modulus (Bending rate 20 mm/min): 1126-1723 Mpa;   Impact strength Charpy (Hammer 4 J): 1.938-3.544 kJ/m 2 ; and   Heat deflection temperature: 80-82° C.   
     
     
         3 . The polymer composition from mixed plastic waste according to  claim 1 , wherein the mixture of unidentified plastics comprises polyamides (PA), Polyethylene terephthalate (PET), Polyacetal (POM), and Polycarbonate (PC). 
     
     
         4 . The polymer composition from mixed plastic waste according to  claim 1 , wherein the composition additionally comprises unidentified, uncleaned, unsorted, homogenized plastic waste of large volume weight so that the plastic waste content is:
 compacted and homogenized plastic waste of small volume weight, approximately 50-75% of the total volume, and   homogenized plastic waste of large volume weight, approximately 25-50% of the total volume.   
     
     
         5 . The polymer composition from mixed plastic waste according to  claim 1 , wherein the composition additionally comprises unidentified, uncleaned, unsorted homogenized plastic waste of large volume weight, an additional component X, and additives Y, and wherein the polymer composition comprises:
 recycled plastic waste of small volume weight, approximately 55-60% of the total volume;   plastic waste of large volume weight, approximately 10-20% of the total volume, and additionally   polystyrene (PS), approximately 10-20% and polypropylene (PP) approximately 10-20% of the total volume, and   additives Y approximately 0.2-10%.   
     
     
         6 . The polymer composition from mixed plastic waste according to  claim 5 , wherein the polymer composition has the following properties:
 Density of the material: 979-1026 kg/m 3 ;   Melt flow index (g/10 min.): 2-5;   Melting temperature: 165-180° C.;   Tensile modulus (Elongation 50 mm/min): 794.97-864.70;   Tensile stress at maximum load (Elongation 50 mm/min): 18.11-21.04 Mpa;   Flexural modulus (Bending rate 20 mm/min);   Impact strength Charpy (Hammer 4 J): 1.348-1.938 kJ/m 2 ; and   Heat deflection temperature: 79-81° C.   
     
     
         7 . The polymer composition from mixed plastic waste according to  claim 5 , wherein the homogenized plastic waste of large volume weight comprises polypropylene (PP), HD polyethylene (HDPE), LD polyethylene (LDPE), polystyrene (PS), ABS, PET, PS/PP compounds, PP/HD compounds, and other unidentified types of plastic material. 
     
     
         8 . The polymer composition from mixed plastic waste according to  claim 5 , wherein the component X is either a single-type polymer or mixture of single-type polymers. 
     
     
         9 . The polymer composition from mixed plastic waste according to  claim 5 , wherein the additive Y is a pigment, UV protective agent, antioxidant, foaming agent, mineral substance, glass fiber substance and/or textile fibre substance. 
     
     
         10 . The polymer composition from mixed plastic waste, comprising plastic waste of different types, wherein the polymer composition is obtained from recycled unidentified, uncleaned, unsorted, homogenized plastic household waste of large volume weight. 
     
     
         11 . The polymer composition from mixed plastic waste according to  claim 10 , wherein the homogenized plastic waste of large volume weight comprises polypropylene (PP), HD polyethylene (HDPE), LD polyethylene (LDPE), polystyrene (PS), ABS, PET, PS/PP compounds, PP/HD compounds, and other unidentified types of plastic material.