{"id":19485,"date":"2026-05-18T10:27:22","date_gmt":"2026-05-18T02:27:22","guid":{"rendered":"https:\/\/www.energycle.com\/pelletizing-plastic\/"},"modified":"2026-05-19T10:39:08","modified_gmt":"2026-05-19T02:39:08","slug":"procesarea-plasticului-in-granule","status":"publish","type":"post","link":"https:\/\/www.energycle.com\/ro\/procesarea-plasticului-in-granule\/","title":{"rendered":"\u00cenglobarea plasticului: Metode, Ma\u0219ini \u0219i Ghidul Costurilor (2026)"},"content":{"rendered":"

Transformarea plasticului \u00een granule transform\u0103 de\u0219eurile mixte de scrap, film, fibr\u0103 sau fl\u0103c\u0103ru\u021b\u0103 post-consumator \u00een granule uniforme pe care molderii de injec\u021bie, extrudorii \u0219i compounderii le vor pl\u0103ti cu adev\u0103rat. Metoda pe care o alegi - prin fire, cu circula\u021bie de ap\u0103, subacvatic\u0103 sau cu fa\u021b\u0103 de die cald\u0103 - determin\u0103 capacitatea de produc\u021bie maxim\u0103, calitatea granulelor, factura de energie \u0219i pre\u021bul de v\u00e2nzare pe ton\u0103. Acest ghid compar\u0103 cele patru metode de baz\u0103, le mapre fiecare la PET, HDPE, PP \u0219i filmul PE \u0219i ofer\u0103 intervale de cost realiste pentru echipamentele din 2026, astfel \u00eenc\u00e2t s\u0103 po\u021bi dimensiona corect linia la prima \u00eencercare.<\/p>\n

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Tabel de con\u021binut<\/h2>\n
    \n
  1. Ce \u00eenseamn\u0103 de fapt transformarea plasticului \u00een granule<\/a><\/li>\n
  2. Cele patru metode de granulare comparate<\/a><\/li>\n
  3. Aranjamentul liniei de granulare: fiecare etap\u0103 explicat\u0103<\/a><\/li>\n
  4. Ghide specifice materialelor: PET, HDPE, PP, filmul PE<\/a><\/li>\n
  5. Alegerea unui granulator de plastic fa\u021b\u0103 de un granulator<\/a><\/li>\n
  6. Dimensionarea capacit\u0103\u021bii de produc\u021bie \u0219i intervalele de cost din 2026<\/a><\/li>\n
  7. Eroarele comune care ucid calitatea granulelor<\/a><\/li>\n
  8. Intrebari frecvente<\/a><\/li>\n<\/ol>\n
    \n

    Ce \u00eenseamn\u0103 de fapt transformarea plasticului \u00een granule<\/h2>\n

    Transformarea plasticului \u00een granule este conversia de\u0219eurilor de plastic sparte, sp\u0103late sau topite \u00een granule mici, uniforme - de obicei de 2\u20135 mm - care pot fi reciclate \u00een echipamente de procesare standard. Granula este unitatea de tranzac\u021bionare a industriei de reciclare: brokerii coteaz\u0103 pe ton\u0103 de granul\u0103, nu pe ton\u0103 de de\u0219euri, deoarece forma \u0219i densitatea volumetric\u0103 a granulelor determin\u0103 modul \u00een care ma\u0219ina de mai jos alimenteaz\u0103.<\/p>\n

    O ma\u0219in\u0103 de granulare pentru reciclarea plasticului se afl\u0103 la sf\u00e2r\u0219itul unei linii de reciclare. \u00cen partea superioar\u0103, spargi, speli \u0219i usci; granulatorul tope\u0219te fl\u0103c\u0103ru\u021ba curat\u0103, o filtreaz\u0103, o extrudeaz\u0103 \u0219i o taie. Metoda de t\u0103iere este ceea ce diferen\u021biaz\u0103 cele patru tehnologii de granulare prezentate mai jos.<\/p>\n

    \n

    Rezumat important:<\/strong> \u201cGranularea\u201d este doar pasul de t\u0103iere, nu \u00eentreaga linie. Alege mai \u00eent\u00e2i metoda de t\u0103iere, apoi dimensioneaz\u0103 extruderul \u0219i sistemul de alimentare \u00een jurul acesteia.<\/p>\n<\/blockquote>\n

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    Cele patru metode de granulare comparate<\/h2>\n

    Fiecare granulator comercial de plastic folose\u0219te una dintre cele patru principii de t\u0103iere. Fiecare se potrive\u0219te unui material \u0219i unui specific de granul\u0103 diferit.<\/p>\n\n\n\n\n\n\n\n\n
    Metod\u0103<\/th>\nCum taie<\/th>\nCel mai bun pentru<\/th>\nCapacitatea de produc\u021bie tipic\u0103<\/th>\nForma granulelor<\/th>\nEnergie (kWh\/ton)<\/th>\n<\/tr>\n<\/thead>\n
    Strand pelletizing<\/strong><\/td>\nFirele trec prin un b\u0103\u021b de ap\u0103, apoi sunt t\u0103iate cu un cu\u021bit rotativ<\/td>\nHDPE rigid, PP, ABS, PS<\/td>\n100\u20132,000 kg\/h<\/td>\nCilindric<\/td>\n280\u2013380<\/td>\n<\/tr>\n
    Peletizare cu inel de ap\u0103<\/strong><\/td>\nCu\u021bitul taie firele topite la fa\u021ba de die; circula\u021bia de ap\u0103 r\u0103ce\u0219te<\/td>\nPE, PP, masterbatch<\/td>\n150\u20131,500 kg\/h<\/td>\nLentil\u0103 \/ disc<\/td>\n250\u2013340<\/td>\n<\/tr>\n
    Granularea subacvatic\u0103<\/strong><\/td>\nFa\u021ba de die este scufundat\u0103; granulele sunt t\u0103iate \u0219i r\u0103cite simultan<\/td>\nPET, rezina de inginerie, PE cu randament ridicat<\/td>\n300\u20136,000 kg\/h<\/td>\nAproape sferice<\/td>\n220\u2013310<\/td>\n<\/tr>\n
    Hot-die-face \/ air-cooled<\/strong><\/td>\nBlade cuts at die face; pellets fall, cooled by air<\/td>\nSoft PE film, foam, low-melt material<\/td>\n80\u2013800 kg\/h<\/td>\nLens \/ teardrop<\/td>\n200\u2013280<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    When strand pelletizing wins<\/h3>\n

    Strand pelletizing is the workhorse for clean rigid scrap \u2014 bottle flake, industrial regrind, fiber waste. Tooling is cheap, blade changes take minutes, and pellet length is easy to tune. The weak point is wet material: strands break in the water bath if moisture is above ~1%, causing stop-starts that wreck throughput.<\/p>\n

    When water-ring pelletizing wins<\/h3>\n

    Water-ring sits between strand and underwater. The die face is in the open air but a high-velocity water ring quenches the pellet the instant it is cut. Operators get underwater-style pellet shape without the operating complexity of a pressurized water chamber. It is the default for PE\/PP masterbatch lines under 1,500 kg\/h.<\/p>\n

    When underwater pelletizing wins<\/h3>\n

    Underwater is the only sensible choice for Peletizare PET<\/strong> above 500 kg\/h and for any line that has to crystallize pellets inline (most PET bottle-to-bottle plants). The submerged cut gives a perfectly spherical pellet, which improves dryer airflow and downstream feeding consistency. The trade-off: tighter process control, higher capex, and dies that cost 3\u20135\u00d7 a strand die.<\/p>\n

    When hot-die-face air-cooled wins<\/h3>\n

    Air-cooled pelletizing is the rescue method for materials that hate water. Soft LDPE film with high MFI, EVA, hot-melt adhesives, and some TPEs all stick or clump in water. Air cooling gives a forgiving process at the cost of lower output and a slightly irregular pellet.<\/p>\n

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    Aranjamentul liniei de granulare: fiecare etap\u0103 explicat\u0103<\/h2>\n

    A pelletizing machine for plastic recycling is one node in a longer chain. A typical post-consumer film line looks like this:<\/p>\n

      \n
    1. Infeed and metering<\/strong> \u2014 belt conveyor with metal detector; weight-loss feeders for masterbatch or additives<\/li>\n
    2. Pre-compaction (for film\/fiber)<\/strong> \u2014 single-shaft compactor or agglomerator densifies low-bulk-density material to 300\u2013450 kg\/m\u00b3 so the extruder can feed it<\/li>\n
    3. Extrudare<\/strong> \u2014 single-screw for clean scrap, twin-screw for contaminated or multi-material feed; degassing zones remove moisture and volatiles<\/li>\n
    4. Filtrarea topiturii<\/strong> \u2014 screen changer (continuous or backflush) holds 80\u2013250 \u00b5m screens to catch paper, aluminum, gels<\/li>\n
    5. Die and pelletizing head<\/strong> \u2014 strand die, water-ring die, or underwater die plate; pellet size set by hole diameter and blade speed<\/li>\n
    6. Cooling and drying<\/strong> \u2014 water bath + centrifugal dryer (strand), or pellet\/water separator + dewatering screen (underwater)<\/li>\n
    7. Classification and storage<\/strong> \u2014 vibrating sieve removes fines and oversize; pellets go to silo or big-bag station<\/li>\n<\/ol>\n

      The single most-skipped stage is filtrare topit\u0103<\/strong>. Buyers spec pellet contamination in ppm; a backflush filter at 80 \u00b5m is the difference between a $900\/ton resale price and a $400\/ton one.<\/p>\n

      \n

      Ghide specifice materialelor: PET, HDPE, PP, filmul PE<\/h2>\n

      Peletizare PET<\/h3>\n

      PET hydrolyzes when melted wet. Every PET recycling pelletizing machine needs:<\/p>\n