{"id":51,"date":"2026-11-06T19:04:40","date_gmt":"2026-11-06T11:04:40","guid":{"rendered":"https:\/\/kerkepm.com\/applications\/pet-recycling\/"},"modified":"2026-11-11T23:40:53","modified_gmt":"2026-11-11T15:40:53","slug":"pet-pelletizing","status":"publish","type":"page","link":"https:\/\/kerkepm.com\/es\/applications\/pet-pelletizing\/","title":{"rendered":"PET Pelletizing &#038; Sheet: Keep the IV"},"content":{"rendered":"<div class=\"k3\">\n<div class=\"wrap\"><div class=\"crumbs\"><a href=\"\/\">Home<\/a><span>\/<\/span><a href=\"\/applications\/\">Applications<\/a><span>\/<\/span>PET Pelletizing & Sheet<\/div><\/div><div class=\"wrap\"><div class=\"hero\">\n<p class=\"kicker\">Application \u00b7 Recycling & PET<\/p>\n<h1>PET Pelletizing & Sheet: Keep the IV<\/h1>\n<p class=\"dek\">PET is judged on one number after pelletizing: intrinsic viscosity. Water and heat destroy it, so drying, low-shear screw design and the right pelletizer are not options but the specification. A reference pet pelletizing page from Kerke.<\/p>\n<div class=\"byline\"><div><b>Updated<\/b> 6 November 2026<\/div>\n<div><b>Output<\/b> 300\u20132,000 kg\/h<\/div>\n<div><b>Line type<\/b> Co-rotating twin screw KTE<\/div>\n<div><b>Basis<\/b> parameter table + material trial<\/div><\/div>\n<\/div><\/div>\n<div class=\"wrap\"><div class=\"appmedia\">\n<div class=\"mslider\" id=\"appslider\">\n<div class=\"ms-frame\"><div class=\"ms-slide on\"><img decoding=\"async\" src=\"\/wp-content\/uploads\/2026\/11\/pet-recycling-s1.webp\" alt=\"PET Pelletizing &amp; Sheet \u2014 workshop photo 1, Kerke workshop, Nanjing\" loading=\"lazy\"><span class=\"ms-cap\">PET Pelletizing &amp; Sheet \u2014 workshop photo 1, Kerke workshop, Nanjing<\/span><\/div><div class=\"ms-slide\"><img decoding=\"async\" src=\"\/wp-content\/uploads\/2026\/11\/pet-recycling-s2.webp\" alt=\"PET Pelletizing &amp; Sheet \u2014 workshop photo 2, Kerke workshop, Nanjing\" loading=\"lazy\"><span class=\"ms-cap\">PET Pelletizing &amp; Sheet \u2014 workshop photo 2, Kerke workshop, Nanjing<\/span><\/div><div class=\"ms-slide\"><img decoding=\"async\" src=\"\/wp-content\/uploads\/2026\/11\/pet-recycling-s3.webp\" alt=\"PET Pelletizing &amp; Sheet \u2014 workshop photo 3, Kerke workshop, Nanjing\" loading=\"lazy\"><span class=\"ms-cap\">PET Pelletizing &amp; Sheet \u2014 workshop photo 3, Kerke workshop, Nanjing<\/span><\/div><div class=\"ms-slide\"><img decoding=\"async\" src=\"\/wp-content\/uploads\/2026\/11\/pet-recycling-s4.webp\" alt=\"PET Pelletizing &amp; Sheet \u2014 workshop photo 4, Kerke workshop, Nanjing\" loading=\"lazy\"><span class=\"ms-cap\">PET Pelletizing &amp; Sheet \u2014 workshop photo 4, Kerke workshop, Nanjing<\/span><\/div><div class=\"ms-slide\"><img decoding=\"async\" src=\"\/wp-content\/uploads\/2026\/11\/pet-recycling-s5.webp\" alt=\"PET Pelletizing &amp; Sheet \u2014 workshop photo 5, Kerke workshop, Nanjing\" loading=\"lazy\"><span class=\"ms-cap\">PET Pelletizing &amp; Sheet \u2014 workshop photo 5, Kerke workshop, Nanjing<\/span><\/div><div class=\"ms-slide\"><img decoding=\"async\" src=\"\/wp-content\/uploads\/2026\/11\/pet-recycling-s6.webp\" alt=\"PET Pelletizing &amp; Sheet \u2014 workshop photo 6, Kerke workshop, Nanjing\" loading=\"lazy\"><span class=\"ms-cap\">PET Pelletizing &amp; Sheet \u2014 workshop photo 6, Kerke workshop, Nanjing<\/span><\/div><div class=\"ms-slide\"><div class=\"ms-video\" data-yt=\"QoeA6k_q4qk\"><img decoding=\"async\" src=\"\/wp-content\/uploads\/2026\/11\/pet-recycling-s1.webp\" alt=\"Running video \u2014 PET Pelletizing &amp; Sheet, Kerke workshop\" loading=\"lazy\"><button type=\"button\" class=\"ms-play\" aria-label=\"Play video\">&#9654;<\/button><\/div><span class=\"ms-cap\">Running video \u2014 PET Pelletizing &amp; Sheet, Kerke workshop<\/span><\/div><\/div>\n<button type=\"button\" class=\"ms-nav prev\" aria-label=\"Previous slide\">&#8249;<\/button>\n<button type=\"button\" class=\"ms-nav next\" aria-label=\"Next slide\">&#8250;<\/button>\n<div class=\"ms-dots\"><button type=\"button\" data-i=\"0\" class=\"ms-dot on\" aria-label=\"Slide 1\"><\/button><button type=\"button\" data-i=\"1\" class=\"ms-dot\" aria-label=\"Slide 2\"><\/button><button type=\"button\" data-i=\"2\" class=\"ms-dot\" aria-label=\"Slide 3\"><\/button><button type=\"button\" data-i=\"3\" class=\"ms-dot\" aria-label=\"Slide 4\"><\/button><button type=\"button\" data-i=\"4\" class=\"ms-dot\" aria-label=\"Slide 5\"><\/button><button type=\"button\" data-i=\"5\" class=\"ms-dot\" aria-label=\"Slide 6\"><\/button><button type=\"button\" data-i=\"6\" class=\"ms-dot\" aria-label=\"Slide 7\"><\/button><\/div>\n<\/div>\n<div class=\"appmedia-text\">\n<section class=\"qa\" id=\"answer\"><nav class=\"wp-block-rank-math-toc-block k3-toc\" aria-label=\"On this page\"><b>On this page:<\/b><a href=\"#rm-s1\">Quick answer<\/a><a href=\"#rm-s2\">What sets the limit<\/a><a href=\"#rm-s3\">Process flow, step by step<\/a><a href=\"#rm-s4\">Equipment configuration<\/a><a href=\"#rm-s5\">Output by model<\/a><\/nav><h2 id=\"rm-s1\">Quick answer<\/h2><p>PET bottle flake recycling requires <strong>pre-drying at 160 \u00b0C for 4\u20136 hours<\/strong>, low-shear melting to protect intrinsic viscosity, vacuum devolatilization and <strong>water-ring strand pelletizing<\/strong>. Output <strong>300\u20132,000 kg\/h<\/strong>; IV loss per pass is typically 0.02\u20130.05 dL\/g when the flake is dry.<\/p><\/section>\n<\/div>\n<\/div><\/div>\n<div class=\"wrap\"><div class=\"grid\"><main>\n<div class=\"stats\"><div class=\"stat\"><b>160 \u00b0C \u00d7 4\u20136 h<\/b><span>drying<\/span><\/div><div class=\"stat\"><b>&lt;50 ppm<\/b><span>moisture<\/span><\/div><div class=\"stat\"><b>water strand<\/b><span>pelletizing<\/span><\/div><\/div>\n<p class=\"note\">Workshop photos and a running video \u2014 shot on our own lines, not stock images.<\/p>\n\n<h2 class=\"sec\" id=\"limit\" id=\"rm-s2\">What sets the limit<\/h2>\n<p class=\"lead\">Flake is de-dusted, crystallized and dried, then melt-filtered (60\u201380 \u00b5m), devolatilized, optionally chain-extended and strand-pelletized. The whole line is designed around moisture and IV, not throughput.<\/p>\n<div class=\"tw\"><table><caption><b>Table 1.<\/b> Key parameters for pet bottle flake recycling &amp; pelletizing line. Reference values \u2014 confirm on a material trial.<\/caption>\n<thead><tr><th scope=\"col\">Parameter<\/th><th scope=\"col\">Value \/ range<\/th><\/tr><\/thead><tbody><tr><td><b>Feed<\/b><\/td><td>PET bottle flake, washed, &lt; 100 ppm moisture after drying<\/td><\/tr><tr><td><b>Pre-drying<\/b><\/td><td>160 \u00b0C \u00d7 4\u20136 h (crystallizer + dryer)<\/td><\/tr><tr><td><b>L\/D<\/b><\/td><td>36\u201344 (low shear)<\/td><\/tr><tr><td><b>Devolatilization<\/b><\/td><td>2-stage vacuum, optional chain extender (ADR)<\/td><\/tr><tr><td><b>Pelletizing<\/b><\/td><td>Water-ring strand<\/td><\/tr><tr><td><b>Output (reference)<\/b><\/td><td>300\u20132,000 kg\/h<\/td><\/tr><\/tbody><\/table><\/div>\n<p class=\"note\">Output figures are measured on the reference material stated above. Filler grade, bulk density and moisture move output by \u00b115% \u2014 that is why every quotation we issue is tied to a trial report.<\/p>\n\n<h2 class=\"sec\" id=\"process\" id=\"rm-s3\">Process flow, step by step<\/h2>\n<ol class=\"flow\"><li><b>Feeding<\/b>Loss-in-weight dosing of polymer and filler; side feeder or liquid injection where the formulation needs it.<\/li><li><b>Melting and dispersing<\/b>Screw geometry with 45\u00b0\/90\u00b0 kneading blocks; barrel profile set by the polymer.<\/li><li><b>Devolatilization<\/b>Vacuum vent at \u22120.06 to \u22120.09 MPa removes moisture and volatiles before the die.<\/li><li><b>Pressure build-up<\/b>Throttle or discharge section stabilises die pressure; a melt pump where gauge control matters.<\/li><li><b>Pelletizing and packing<\/b>Water-ring strand; then centrifugal dryer, vibrating screen and bagging.<\/li><\/ol>\n\n<h2 class=\"sec\" id=\"equipment\" id=\"rm-s4\">Equipment configuration<\/h2>\n<div class=\"tw\"><table><caption><b>Table 2.<\/b> What the line is made of, and why each part is specified that way.<\/caption>\n<thead><tr><th scope=\"col\">Stage<\/th><th scope=\"col\">Equipment<\/th><th scope=\"col\">Why this choice<\/th><\/tr><\/thead><tbody>\n<tr><td>Main machine<\/td><td><a href=\"\/machines\/co-rotating-twin-screw-extruder\/\">Co-Rotating Twin Screw Extruder<\/a><\/td><td>Architecture follows the filling level and the mixing duty, not the required tonnage.<\/td><\/tr>\n<tr><td>Screw geometry<\/td><td>Building-block elements, W6Mo5Cr4V2, bimetallic liner<\/td><td>Wear package for abrasive filler; mixing blocks only where dispersion demands them.<\/td><\/tr>\n<tr><td>Feeding<\/td><td><a href=\"\/machines\/gravimetric-feeding-system\/\">Loss-in-weight feeder<\/a>, side feeder where needed<\/td><td>Recipe accuracy: \u00b10.5% short term on the weighed component.<\/td><\/tr>\n<tr><td>Pelletizing<\/td><td><a href=\"\/machines\/pelletizing-systems\/\">Pelletizing system<\/a><\/td><td>Chosen by polymer and filler ceiling \u2014 water contact is the deciding column.<\/td><\/tr>\n<tr><td>Downstream<\/td><td>Centrifugal dryer, vibrating screen, bagging<\/td><td>Fines below 2% and moisture below the specification of your downstream process.<\/td><\/tr>\n<\/tbody><\/table><\/div>\n\n<h2 class=\"sec\" id=\"output\" id=\"rm-s5\">Output by model<\/h2>\n<div class=\"tw\"><table><caption><b>Table 3.<\/b> Co-rotating twin screw KTE \u2014 reference output. Full range on the <a href=\"\/machines\/co-rotating-twin-screw-extruder\/\">machine page<\/a>.<\/caption>\n<thead><tr><th scope=\"col\">Model<\/th><th scope=\"col\">Dia. (mm)<\/th><th scope=\"col\">Speed (rpm)<\/th><th scope=\"col\">Motor (kW)<\/th><th scope=\"col\">Torque (N\u00b7m)<\/th><th scope=\"col\">Output (kg\/h)<\/th><\/tr><\/thead><tbody><tr><td class=\"num\"><a href=\"\/applications\/kte-50b\/\">KTE-50B<\/a><\/td><td class=\"num\">50.5<\/td><td class=\"num\">500\u2013600<\/td><td class=\"num\">55\u201375<\/td><td class=\"num\">2\u00d7525<\/td><td class=\"num\">80\u2013200<\/td><\/tr><tr><td class=\"num\"><a href=\"\/applications\/kte-50d\/\">KTE-50D<\/a><\/td><td class=\"num\">50.5<\/td><td class=\"num\">300\u2013800<\/td><td class=\"num\">75\u201390<\/td><td class=\"num\">2\u00d7860<\/td><td class=\"num\">100\u2013300<\/td><\/tr><tr><td class=\"num\"><a href=\"\/applications\/kte-52b\/\">KTE-52B<\/a><\/td><td class=\"num\">51.4<\/td><td class=\"num\">500\u2013600<\/td><td class=\"num\">55\u201375<\/td><td class=\"num\">2\u00d7720<\/td><td class=\"num\">80\u2013200<\/td><\/tr><tr><td class=\"num\"><a href=\"\/applications\/kte-52d\/\">KTE-52D<\/a><\/td><td class=\"num\">51.4<\/td><td class=\"num\">500\u2013600<\/td><td class=\"num\">75\u2013110<\/td><td class=\"num\">2\u00d71050<\/td><td class=\"num\">100\u2013400<\/td><\/tr><tr><td class=\"num\"><a href=\"\/applications\/kte-65b\/\">KTE-65B<\/a><\/td><td class=\"num\">62.4<\/td><td class=\"num\">500\u2013600<\/td><td class=\"num\">90\u2013110<\/td><td class=\"num\">2\u00d7860<\/td><td class=\"num\">200\u2013450<\/td><\/tr><tr><td class=\"num\"><a href=\"\/applications\/kte-65d\/\">KTE-65D<\/a><\/td><td class=\"num\">62.4<\/td><td class=\"num\">300\u2013800<\/td><td class=\"num\">132\u2013160<\/td><td class=\"num\">2\u00d71530<\/td><td class=\"num\">350\u2013600<\/td><\/tr><tr><td class=\"num\"><a href=\"\/applications\/kte-75b\/\">KTE-75B<\/a><\/td><td class=\"num\">71<\/td><td class=\"num\">500\u2013600<\/td><td class=\"num\">132\u2013160<\/td><td class=\"num\">2\u00d71530<\/td><td class=\"num\">300\u2013800<\/td><\/tr><tr><td class=\"num\"><a href=\"\/applications\/kte-75d\/\">KTE-75D<\/a><\/td><td class=\"num\">71<\/td><td class=\"num\">300\u2013800<\/td><td class=\"num\">200\u2013315<\/td><td class=\"num\">2\u00d72100<\/td><td class=\"num\">500\u20131000<\/td><\/tr><tr><td class=\"num\"><a href=\"\/applications\/kte-85b\/\">KTE-85B<\/a><\/td><td class=\"num\">85<\/td><td class=\"num\">500\u2013600<\/td><td class=\"num\">220\u2013315<\/td><td class=\"num\">2\u00d72100<\/td><td class=\"num\">550\u20131000<\/td><\/tr><tr><td class=\"num\"><a href=\"\/applications\/kte-95b\/\">KTE-95B<\/a><\/td><td class=\"num\">93<\/td><td class=\"num\">500\u2013600<\/td><td class=\"num\">250\u2013315<\/td><td class=\"num\">2\u00d73000<\/td><td class=\"num\">800\u20131500<\/td><\/tr><tr><td class=\"num\"><a href=\"\/applications\/kte-95d\/\">KTE-95D<\/a><\/td><td class=\"num\">93<\/td><td class=\"num\">500\u2013800<\/td><td class=\"num\">315\u2013500<\/td><td class=\"num\">2\u00d74800<\/td><td class=\"num\">1000\u20132000<\/td><\/tr><tr><td class=\"num\"><a href=\"\/applications\/kte-135b\/\">KTE-135B<\/a><\/td><td class=\"num\">135<\/td><td class=\"num\">500\u2013600<\/td><td class=\"num\">315\u2013500<\/td><td class=\"num\">2\u00d74800<\/td><td class=\"num\">1500\u20133000<\/td><\/tr><tr><td class=\"num\"><a href=\"\/applications\/kte-135d\/\">KTE-135D<\/a><\/td><td class=\"num\">135<\/td><td class=\"num\">500\u2013800<\/td><td class=\"num\">500\u20131000<\/td><td class=\"num\">2\u00d77800<\/td><td class=\"num\">1500\u20134000<\/td><\/tr><\/tbody><\/table><\/div>\n\n<h2 class=\"sec\" id=\"mistakes\" id=\"rm-s6\">Three mistakes that cost the most<\/h2>\n<div class=\"call warn\"><h4>1. Skipping crystallization: amorphous flake fuses into a solid mass in the dryer.<\/h4><p>Skipping crystallization: amorphous flake fuses into a solid mass in the dryer.<\/p><\/div><div class=\"call warn\"><h4>2. High shear screw: IV drops 0.1+ per pass and the pellets fail the downstream spec.<\/h4><p>High shear screw: IV drops 0.1+ per pass and the pellets fail the downstream spec.<\/p><\/div><div class=\"call warn\"><h4>3. No fine filtration: paper and label residue end up as specks in the filament.<\/h4><p>No fine filtration: paper and label residue end up as specks in the filament.<\/p><\/div>\n\n<h2 class=\"sec\" id=\"faq\" id=\"rm-s7\">FAQ<\/h2>\n<details open><summary>How much IV loss per pass?<\/summary><p>0.02\u20130.05 dL\/g with dry flake and a low-shear screw. If you see more, check flake moisture first, then melt temperature.<\/p><\/details><details><summary>Do I need a chain extender?<\/summary><p>Only if the incoming IV is below 0.70 or you need food-grade IV above 0.80. ADR adds cost and needs careful dosing.<\/p><\/details><details><summary>What about food-grade rPET?<\/summary><p>That requires a certified process (EFSA\/FDA letter of no objection), usually with a vacuum devolatilization stage and documented residence time \u2014 we design the mechanical part, certification is with your process auditor.<\/p><\/details><details><summary>Can the line run bottle flake and film scrap?<\/summary><p>Bottle flake yes; film needs a different feeding and compaction stage, so it is normally a separate line configuration.<\/p><\/details><details><summary>What output can you guarantee for this application?<\/summary><p>The reference band is 300\u20132,000 kg\/h, measured on the stated material. We quote a guaranteed figure only after a trial on your own material, because filler grade, bulk density and moisture move output by \u00b115%.<\/p><\/details><details><summary>Can we run our material before ordering?<\/summary><p>Yes \u2014 send 25\u201350 kg. We return pellets, a running video and a report with temperatures, screw speed, feeder settings and output per hour. The trial is free; you cover the freight.<\/p><\/details><details><summary>What is the delivery time?<\/summary><p>30\u201345 working days for standard configurations, 45\u201370 for custom screw geometry and ODM work. Voltage and frequency are built for the destination country.<\/p><\/details>\n\n<div class=\"method\"><h2 id=\"rm-s8\">Where these numbers come from<\/h2>\n<p>Parameters are taken from the Kerke product parameter table and the product master data sheet, and cross-checked against commissioning records for lines in the same application. Formulations and temperature windows are typical industry values, not a recommendation for your specific compound \u2014 every figure marked <em>reference<\/em> must be confirmed on a material trial before it becomes a contractual number.<\/p>\n<p>Reviewed by the Kerke process team, Nanjing. Page updated 6 November 2026.<\/p><\/div>\n\n<div class=\"related\"><h2 id=\"rm-s9\">Related<\/h2><div class=\"rel-grid\"><a class=\"rel\" href=\"\/applications\/recycled-plastic-pelletizing\/\"><span>Application<\/span>Waste Plastic Recycling Pelletizing Line<\/a><a class=\"rel\" href=\"\/applications\/compounding-extrusion-line\/\"><span>Application<\/span>Plastic Compounding Extrusion Line<\/a><a class=\"rel\" href=\"\/machines\/co-rotating-twin-screw-extruder\/\"><span>Machine<\/span>Co-Rotating Twin Screw Extruder (KTE-50B to KTE-135D)<\/a><a class=\"rel\" href=\"\/machines\/pelletizing-systems\/\"><span>Machine<\/span>Pelletizing systems: 7 methods compared<\/a><a class=\"rel\" href=\"\/knowledge\/pelletizing-methods-compared\/\"><span>Knowledge<\/span>Seven pelletizing methods compared<\/a><a class=\"rel\" href=\"\/knowledge\/twin-screw-extruder-size-chart\/\"><span>Knowledge<\/span>Twin screw size chart, 16\u2013135 mm<\/a><\/div><\/div>\n<div class=\"cta\"><div><b>Tell us your material \u2014 we will tell you the line<\/b><p>Send 25\u201350 kg and we run it on our lab extruder: pellets, running video and a capacity report back in 3\u20137 days.<\/p><\/div>\n<div class=\"acts\"><a href=\"\/get-a-quote\/\">Get a quote<\/a>\n<a class=\"alt\" href=\"\/get-a-quote\/#trial\">Send material for trial<\/a><\/div><\/div>\n<\/main>\n<aside><h5>On this page<\/h5><ol><li><a href=\"#answer\">Quick answer<\/a><\/li><li><a href=\"#limit\">What sets the limit<\/a><\/li><li><a href=\"#process\">Process flow<\/a><\/li><li><a href=\"#equipment\">Equipment configuration<\/a><\/li><li><a href=\"#output\">Output by model<\/a><\/li><li><a href=\"#mistakes\">Costly mistakes<\/a><\/li><li><a href=\"#faq\">FAQ<\/a><\/li><\/ol>\n<div class=\"sidecard\"><b>Which line for your filling level?<\/b>\n<p>Below 85% one twin screw is enough; above it, architecture changes. Tell us the number before we talk tonnage.<\/p>\n<a class=\"btn\" href=\"\/get-a-quote\/\">Ask an engineer<\/a>\n<a class=\"btn ghost\" href=\"\/applications\/\">Browse by material<\/a><\/div>\n<\/aside><\/div><\/div>\n<script>\n(function(){\n  var root=document.getElementById('appslider'); if(!root) return;\n  var slides=[].slice.call(root.querySelectorAll('.ms-slide'));\n  var dots=[].slice.call(root.querySelectorAll('.ms-dot'));\n  var cur=0, timer=null, locked=false;\n  function show(i){\n    cur=(i+slides.length)%slides.length;\n    slides.forEach(function(s,j){\n      s.classList.toggle('on', j===cur);\n      var v=s.querySelector('.ms-video');\n      if(j!==cur && v){ var f=v.querySelector('iframe');\n        if(f){ f.remove(); var p=v.querySelector('.ms-play'); if(p) p.style.display=''; } }\n    });\n    dots.forEach(function(d,j){ d.classList.toggle('on', j===cur); });\n    var v=slides[cur].querySelector('.ms-video');\n    if(v){ locked=true; stop(); playVideo(v); }\n  }\n  \/* \u81ea\u52a8\u64ad\u653e\uff1a3s \u4e00\u5f20\uff1b\u60ac\u505c\u6682\u505c\uff0c\u79fb\u51fa\u6062\u590d\uff1b\u8f6e\u5230\u89c6\u9891\u81ea\u52a8\u9759\u97f3\u64ad\u653e\u5e76\u505c\u7559\uff08locked\uff09\uff0c\u624b\u52a8\u5207\u6362\u540e\u6062\u590d\u8f6e\u64ad *\/\n  function start(){ if(timer || document.hidden || locked) return; timer=setInterval(function(){ show(cur+1); }, 3000); }\n  function stop(){ if(timer){ clearInterval(timer); timer=null; } }\n  function playVideo(v){\n    if(v.querySelector('iframe')) return;\n    var f=document.createElement('iframe');\n    f.src='https:\/\/www.youtube.com\/embed\/'+v.dataset.yt+'?autoplay=1&mute=1&rel=0';\n    f.setAttribute('allow','autoplay; encrypted-media; picture-in-picture');\n    f.setAttribute('allowfullscreen','');\n    var p=v.querySelector('.ms-play'); if(p) p.style.display='none';\n    v.insertBefore(f, p);\n  }\n  function manual(i){ locked=false; show(i); start(); }\n  document.addEventListener('visibilitychange', function(){ if(document.hidden) stop(); else start(); });\n  root.addEventListener('mouseenter', stop);\n  root.addEventListener('mouseleave', function(){ if(!locked) start(); });\n  root.querySelector('.prev').addEventListener('click', function(){ manual(cur-1); });\n  root.querySelector('.next').addEventListener('click', function(){ manual(cur+1); });\n  dots.forEach(function(d){ d.addEventListener('click', function(){ manual(+d.dataset.i); }); });\n  root.addEventListener('click', function(e){\n    var p=e.target.closest('.ms-play'); if(!p) return;\n    locked=true; stop(); playVideo(p.parentNode);\n  });\n  show(0);\n  start();\n})();\n<\/script>\n<script type=\"application\/ld+json\">{\"@context\": \"https:\/\/schema.org\", \"@graph\": [{\"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"How much IV loss per pass?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"0.02\u20130.05 dL\/g with dry flake and a low-shear screw. 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ADR adds cost and needs careful dosing.\"}}, {\"@type\": \"Question\", \"name\": \"What about food-grade rPET?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"That requires a certified process (EFSA\/FDA letter of no objection), usually with a vacuum devolatilization stage and documented residence time \u2014 we design the mechanical part, certification is with your process auditor.\"}}, {\"@type\": \"Question\", \"name\": \"Can the line run bottle flake and film scrap?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Bottle flake yes; film needs a different feeding and compaction stage, so it is normally a separate line configuration.\"}}, {\"@type\": \"Question\", \"name\": \"What output can you guarantee for this application?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The reference band is 300\u20132,000 kg\/h, measured on the stated material. We quote a guaranteed figure only after a trial on your own material, because filler grade, bulk density and moisture move output by \u00b115%.\"}}, {\"@type\": \"Question\", \"name\": \"Can we run our material before ordering?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes \u2014 send 25\u201350 kg. We return pellets, a running video and a report with temperatures, screw speed, feeder settings and output per hour. The trial is free; you cover the freight.\"}}, {\"@type\": \"Question\", \"name\": \"What is the delivery time?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"30\u201345 working days for standard configurations, 45\u201370 for custom screw geometry and ODM work. Voltage and frequency are built for the destination country.\"}}]}, {\"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/www.kerkepm.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Applications\", \"item\": \"https:\/\/www.kerkepm.com\/applications\/\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"PET Pelletizing & Sheet\"}]}]}<\/script>\n<div class=\"wrap\"><section class=\"k3-more\" id=\"rm-more\"><h2>PET pelletizing \u2014 the short version<\/h2><p>Note on pet pelletizing: the numbers above are reference ranges from Kerke's own trial runs, not catalogue promises. Screw geometry, wear package and pelletizing method are set on the trial bench first, so the output you compare is the output you get. If your grade is not in the tables, send it \u2014 the closest configuration is usually a change of screw set, not a different machine.<\/p><p class=\"k3-rel\"><b>Related on this site:<\/b> <a href=\"\/machines\/co-rotating-twin-screw-extruder\/\">Machine range: KTE-50B to 135D<\/a> \u00b7 <a href=\"\/knowledge\/pelletizing-methods-compared\/\">Pelletizing methods compared<\/a> \u00b7 <a href=\"\/get-a-quote\/\">quotation and free trial<\/a> \u00b7 <a href=\"https:\/\/en.wikipedia.org\/wiki\/Masterbatch\" target=\"_blank\" rel=\"noopener\">Wikipedia: Masterbatch<\/a><\/p><\/section><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Home\/Applications\/PET Pelletizing &#038; Sheet Application \u00b7 Recycling &#038; PET PET Pelletizing &#038; Sheet: Keep the IV PET is judged on one number after pelletizing: intrinsic viscosity. Water and heat destroy it, so drying, low-shear screw design and the right pelletizer are not options but the specification. A reference pet pelletizing page from Kerke. Updated 6 [&#8230;]\n","protected":false},"author":0,"featured_media":1697,"parent":23,"menu_order":718,"comment_status":"closed","ping_status":"closed","template":"page-blank.php","meta":{"footnotes":""},"application":[53],"app_group":[23],"class_list":["post-51","page","type-page","status-publish","has-post-thumbnail","hentry","application-pet-recycling","app_group-recycling"],"_links":{"self":[{"href":"https:\/\/kerkepm.com\/es\/wp-json\/wp\/v2\/pages\/51","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kerkepm.com\/es\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/kerkepm.com\/es\/wp-json\/wp\/v2\/types\/page"}],"replies":[{"embeddable":true,"href":"https:\/\/kerkepm.com\/es\/wp-json\/wp\/v2\/comments?post=51"}],"version-history":[{"count":0,"href":"https:\/\/kerkepm.com\/es\/wp-json\/wp\/v2\/pages\/51\/revisions"}],"up":[{"embeddable":true,"href":"https:\/\/kerkepm.com\/es\/wp-json\/wp\/v2\/pages\/23"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/kerkepm.com\/es\/wp-json\/wp\/v2\/media\/1697"}],"wp:attachment":[{"href":"https:\/\/kerkepm.com\/es\/wp-json\/wp\/v2\/media?parent=51"}],"wp:term":[{"taxonomy":"application","embeddable":true,"href":"https:\/\/kerkepm.com\/es\/wp-json\/wp\/v2\/application?post=51"},{"taxonomy":"app_group","embeddable":true,"href":"https:\/\/kerkepm.com\/es\/wp-json\/wp\/v2\/app_group?post=51"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}