PL432317A1 - Method of producing polyester monofilaments from recyclates for food contact - Google Patents
Method of producing polyester monofilaments from recyclates for food contactInfo
- Publication number
- PL432317A1 PL432317A1 PL432317A PL43231719A PL432317A1 PL 432317 A1 PL432317 A1 PL 432317A1 PL 432317 A PL432317 A PL 432317A PL 43231719 A PL43231719 A PL 43231719A PL 432317 A1 PL432317 A1 PL 432317A1
- Authority
- PL
- Poland
- Prior art keywords
- recyclate
- optionally
- recyclates
- producing polyester
- main
- Prior art date
Links
- 238000000034 method Methods 0.000 title abstract 2
- 229920000728 polyester Polymers 0.000 title abstract 2
- 239000010410 layer Substances 0.000 abstract 2
- 229920000139 polyethylene terephthalate Polymers 0.000 abstract 2
- 239000005020 polyethylene terephthalate Substances 0.000 abstract 2
- 239000007795 chemical reaction product Substances 0.000 abstract 1
- 238000010924 continuous production Methods 0.000 abstract 1
- 238000005202 decontamination Methods 0.000 abstract 1
- 230000003588 decontaminative effect Effects 0.000 abstract 1
- 239000011261 inert gas Substances 0.000 abstract 1
- 239000000155 melt Substances 0.000 abstract 1
- 238000006068 polycondensation reaction Methods 0.000 abstract 1
- 239000002356 single layer Substances 0.000 abstract 1
- 239000007787 solid Substances 0.000 abstract 1
Landscapes
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Artificial Filaments (AREA)
Abstract
Przedmiotem zgłoszenia jest sposób wytwarzania monofolii poliestrowej z recyklatów do kontaktu z żywnością, który polega na tym, że recyklat poli(tereftalanu etylenu) PET w stanie stałym podgrzewa się w przepływie gorącego powietrza do temperatury 160°C do 210°C pod obniżonym ciśnieniem i/lub w przepływie gazu obojętnego, po czym produkt reakcji polikondensacji w stanie stałym połączonej z dekontaminacją chłodzi się do temperatury poniżej 100°C i kieruje do głównej wytłaczarki jedno- lub dwuślimakowej i prowadzi wytłaczanie folii w procesie ciągłym z zastosowaniem urządzenia wyposażonego w jedną główną wytłaczarkę i ewentualnie wytłaczarki dodatkowe, przy czym ewentualnie w bloku współwytłaczającym łączy się strumienie stopionego tworzywa pochodzące z wytłaczarki głównej i ewentualnie wytłaczarek dodatkowych w jeden uzyskując układ jednowarstwowy zawierający 100% recyklatu lub wielowarstwowy, przy czym ilość recyklatu w folii wielowarstwowej jest większa niż 50%.The subject of the application is a method of producing polyester monofilament from recyclates for contact with food, which consists in the fact that solid state poly (ethylene terephthalate) PET recyclate is heated in the flow of hot air to a temperature of 160 ° C to 210 ° C under reduced pressure and / or in an inert gas flow, whereafter the solid-state polycondensation reaction product combined with decontamination is cooled to a temperature below 100 ° C and directed to the main single or twin screw extruder and the film is extruded in a continuous process using a device equipped with one main extruder and optionally, additional extruders, where, optionally, in the coextrusion block, the melt streams from the main extruder and optionally additional extruders are combined into one to obtain a single-layer system containing 100% of recyclate or a multi-layer system, where the amount of recyclate in the multi-layer film is greater than 50%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL432317A PL244014B1 (en) | 2019-12-20 | 2019-12-20 | Method of producing polyester monofilaments from recyclates for food contact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL432317A PL244014B1 (en) | 2019-12-20 | 2019-12-20 | Method of producing polyester monofilaments from recyclates for food contact |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| PL432317A1 true PL432317A1 (en) | 2021-06-28 |
| PL244014B1 PL244014B1 (en) | 2023-11-20 |
Family
ID=76547991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PL432317A PL244014B1 (en) | 2019-12-20 | 2019-12-20 | Method of producing polyester monofilaments from recyclates for food contact |
Country Status (1)
| Country | Link |
|---|---|
| PL (1) | PL244014B1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PL446385A1 (en) * | 2023-10-13 | 2024-04-08 | Makdor Spółka Z Ograniczoną Odpowiedzialnością Spółka Komandytowa | Polyethylene terephthalate foil |
| PL446286A1 (en) * | 2023-09-28 | 2025-03-31 | Kgl Spółka Akcyjna | Method of manufacturing foamed polypropylene foil packaging intended for takeaway meals |
-
2019
- 2019-12-20 PL PL432317A patent/PL244014B1/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PL446286A1 (en) * | 2023-09-28 | 2025-03-31 | Kgl Spółka Akcyjna | Method of manufacturing foamed polypropylene foil packaging intended for takeaway meals |
| PL446385A1 (en) * | 2023-10-13 | 2024-04-08 | Makdor Spółka Z Ograniczoną Odpowiedzialnością Spółka Komandytowa | Polyethylene terephthalate foil |
Also Published As
| Publication number | Publication date |
|---|---|
| PL244014B1 (en) | 2023-11-20 |
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