FIELD: technological processes.
SUBSTANCE: invention is related to plastic industry. Wastes of biaxially oriented polystyrene film is crushed by grinding, at that charge consisting of 100% crushed wastes of biaxially oriented film is additionally granulated. Then crushed wastes are mixed with nucleator, melted in extruder, foaming agent is introduced, and prepared mixture is extruded with moulding of foamed target structural product. Foamed target structural product is molded in the form of thin sheet, plate or profile.
EFFECT: provision of foamed target structural products that are not interior in quality to products made of grade polystyrene, and preservation of high consumer properties of the film itself due to its production without return of wastes.
4 cl, 1 tbl, 9 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF SELF-EXTINGUISHING FROTHED PLATE MAKING | 2000 |
|
RU2190638C2 |
| METHOD FOR PRODUCTION OF FOAMED PLATES WITH HIGH COMPRESSIVE STRENGTH | 1999 |
|
RU2167061C2 |
| METHOD OF PRODUCING CELLULAR POLYSTYRENE BOARD | 2010 |
|
RU2465139C2 |
| METHOD OF OBTAINING GRANULES OF FOAMING STYRENE POLYMER | 2008 |
|
RU2398792C2 |
| BIODEGRADABLE GRANULAR POLYOLEFIN BLEND AND METHOD OF PRODUCTION | 2008 |
|
RU2352597C1 |
| METHOD OF PRODUCTION OF THE GRANULES OF THE FOAMING STYRENE POLYMERIC COMPOUND | 2005 |
|
RU2295439C2 |
| METHOD OF PREPARING POLYSTYRENE GRANULATE CAPABLE OF FOAMING | 2009 |
|
RU2398791C1 |
| METHOD OF MAKING FOAMED POLYSTYRENE SLABS WITH HIGH COMPRESSION STRENGTH | 2009 |
|
RU2400494C1 |
| COMPOSITION FOR PRODUCING EXPANDABLE POLYSTYRENE | 2009 |
|
RU2427595C2 |
| METHOD OF PRODUCING FOAMABLE POLYSTYRENE GRANULATE | 2010 |
|
RU2448130C2 |
