{"id":13919,"date":"2026-04-19T19:08:19","date_gmt":"2026-04-20T02:08:19","guid":{"rendered":"https:\/\/www.recyclemachine.net\/"},"modified":"2026-06-14T18:44:11","modified_gmt":"2026-06-15T01:44:11","slug":"how-to-control-pvc-in-pet-bottle-recycling-lines-below-50-ppm","status":"publish","type":"post","link":"https:\/\/www.recyclemachine.net\/ja\/how-to-control-pvc-in-pet-bottle-recycling-lines-below-50-ppm\/","title":{"rendered":"PET\u30dc\u30c8\u30eb\u30ea\u30b5\u30a4\u30af\u30eb\u30e9\u30a4\u30f3\u3067PVC\u309250 ppm\u4ee5\u4e0b\u306b\u7ba1\u7406\u3059\u308b\u65b9\u6cd5"},"content":{"rendered":"<p class=\"wp-block-paragraph\">Controlling PVC contamination is one of the toughest challenges in PET bottle recycling, especially when you target high-end applications and food-grade rPET. Even at concentrations around 50 ppm, PVC can damage PET quality, causing brittleness, yellowing and unwanted by-products during extrusion. For PET recyclers, keeping PVC as low as possible is not just a technical requirement \u2013 it directly impacts selling price, customer acceptance and long-term profitability.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In this article, we look at where PVC comes from in a typical PET bottle line, what \u201cgood\u201d looks like in terms of ppm levels, and how a combination of front-end sorting, washing and dry electrostatic separation can help you reliably stay below 50 ppm.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>TL;DR (for plant managers &amp; buyers)<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>PVC can cause serious PET degradation even around <strong>50 ppm<\/strong>.<\/li>\n\n\n\n<li>The most effective strategy is <strong>prevent PVC before grinding<\/strong>, then use <strong>washing + float-sink<\/strong> for bulk cleaning, and a <strong>dry polishing step<\/strong> (often electrostatic) to remove trace PVC.<\/li>\n\n\n\n<li>Prove performance with <strong>routine testing + trend monitoring<\/strong>, not one-off samples.<\/li>\n<\/ul>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\">Why 50 ppm PVC matters so much<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Multiple industry sources point out that PVC contamination at or even below 50 ppm can already trigger quality issues in PET flakes when they are remelted. PVC degrades and releases chlorine-containing compounds at PET processing temperatures, which can:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Promote chain scission and embrittlement in the PET resin.<\/li>\n\n\n\n<li>Cause yellowing or off-color in pellets and final products.<\/li>\n\n\n\n<li>Corrode processing equipment and complicate exhaust gas treatment.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">For high-end applications such as food-contact rPET, bottle-to-bottle recycling and premium polyester fibers, buyers often require PVC levels below 50 ppm \u2013 and in some cases below 30 ppm \u2013 as part of their specifications. This means PET recyclers need a process that consistently delivers this quality, not just in lab samples but in full-scale, 24\/7 operation.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Typical sources of PVC in PET bottle streams<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">In a PET bottle recycling line, PVC can enter the system from several sources:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Whole PVC bottles and containers that slip through front-end sorting.<\/li>\n\n\n\n<li>Shrink sleeves, labels and safety seals made from PVC or PETG.<\/li>\n\n\n\n<li>Cap liners, multilayer components and residual films in the bale mix.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Even when PVC is only a small fraction of the incoming bales, its impact on the final flake quality is disproportionate. A contamination level of 50 ppm corresponds to only about 0.05 kg PVC per 1,000 kg of PET flakes \u2013 a tiny amount in mass, but enough to compromise high-spec applications.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What \u201cbelow 50 ppm\u201d looks like in practice<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Technical datasheets and buyer specifications for high-quality rPET flakes often list maximum PVC limits in the range of 10\u201350 ppm, combined with tight limits on other polymers. For example, some clear rPET flake specs call for:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>PVC below 10\u201350 ppm.<\/li>\n\n\n\n<li>Total foreign polymers below 80\u2013100 ppm.<\/li>\n\n\n\n<li>Overall flake purity &gt;99.8% on a mass basis.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Reaching these numbers reliably requires more than one single \u201cmagic\u201d machine. Instead, successful plants design their lines as a sequence of complementary steps:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Bale inspection and pre-sorting.<\/li>\n\n\n\n<li>Manual and\/or automated bottle sorting.<\/li>\n\n\n\n<li>Label removal and size reduction.<\/li>\n\n\n\n<li>Cold and hot washing.<\/li>\n\n\n\n<li>Flotation and density separation.<\/li>\n\n\n\n<li>Drying and final dry-cleaning \/ polishing stages.<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">Electrostatic separation sits at the very end of this chain as a dry polishing technology, removing the last traces of PVC and other polymers from already-washed, dried PET flakes.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Front-end: keeping as much PVC out as possible<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The first line of defense against PVC is simply not to let it enter the flake stream. Common strategies include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Manual sorting with UV or visual aids:<\/strong> Experienced operators can identify PVC bottles and labels, and UV illumination can enhance contrast between PET and PVC.<\/li>\n\n\n\n<li><strong>NIR-based bottle sorters:<\/strong> Near-infrared optical sorters classify bottles by polymer type and eject PVC, PETG and other undesired materials before shredding.<\/li>\n\n\n\n<li><strong>Mechanical and label removal steps:<\/strong> <a href=\"https:\/\/www.recyclemachine.net\/ja\/%e3%83%9a%e3%83%83%e3%83%88%e3%83%9c%e3%83%88%e3%83%ab%e3%83%a9%e3%83%99%e3%83%ab%e5%89%a5%e3%81%8c%e3%81%97%e6%a9%9f\/\">De-labelling systems<\/a> and pre-wash stages strip sleeves and labels, reducing downstream PVC load.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">These technologies are highly effective on whole bottles and large pieces, and they can dramatically reduce the amount of PVC arriving at the grinding and washing sections. However, they are not perfect and do not fully address small fragments and mixed flakes.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Washing, float-sink and what they can (and can\u2019t) do<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Most PET bottle lines rely on a combination of hot washing, friction washing and float-sink separation to remove glues, paper, organics and low-density contaminants. In a typical process:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Wet grinders reduce the bottles into flakes.<\/li>\n\n\n\n<li>\u6469\u64e6\u6d17\u6d44\u7528\u306e\u30ef\u30c3\u30b7\u30e3\u30fc\u3068\u71b1\u6d17\u6d44\u30bf\u30f3\u30af\u306f\u3001\u30e9\u30d9\u30eb\u3001\u6c5a\u308c\u3001\u63a5\u7740\u5264\u3092\u53d6\u308a\u9664\u304d\u307e\u3059\u3002.<\/li>\n\n\n\n<li><a href=\"https:\/\/www.recyclemachine.net\/ja\/%e3%83%9a%e3%83%83%e3%83%88%e3%83%95%e3%83%ac%e3%83%bc%e3%82%af%e6%b5%84%e5%8c%96%e5%88%86%e9%9b%a2%e3%82%bf%e3%83%b3%e3%82%af\/\">Float-sink tanks<\/a> \u5bc6\u5ea6\u306b\u57fa\u3065\u3044\u3066\u30dd\u30ea\u30aa\u30ec\u30d5\u30a3\u30f3\uff08PP\/HDPE\uff09\u3092PET\u304b\u3089\u5206\u96e2\u3057\u307e\u3059\u3002.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u308c\u3089\u306e\u624b\u9806\u306f\u3001\u6c5a\u67d3\u5168\u4f53\u3092\u6e1b\u3089\u3057\u3001PET\u3092\u30ad\u30e3\u30c3\u30d7\u3084\u30e9\u30d9\u30eb\u304b\u3089\u5206\u96e2\u3059\u308b\u306e\u306b\u975e\u5e38\u306b\u6709\u52b9\u3067\u3059\u3002\u3057\u304b\u3057\u3001PET\u3068PVC\u306e\u5bc6\u5ea6\u306e\u5dee\u306f\u6bd4\u8f03\u7684\u5c0f\u3055\u304f\u3001\u591a\u304f\u306e\u5bc6\u5ea6\u306b\u57fa\u3065\u304f\u30b7\u30b9\u30c6\u30e0\u306fPVC\u306e\u9664\u53bb\u306b\u7279\u5316\u3057\u3066\u6700\u9069\u5316\u3055\u308c\u3066\u3044\u307e\u305b\u3093\u3002\u305d\u306e\u305f\u3081\u3001\u8ffd\u52a0\u306e\u629b\u5149\u30b9\u30c6\u30c3\u30d7\u304c\u4f7f\u7528\u3055\u308c\u3066\u3044\u306a\u3044\u5834\u5408\u3001\u30c7\u30b6\u30a4\u30f3\u304c\u975e\u5e38\u306b\u826f\u3044\u6d17\u6d44\u30e9\u30a4\u30f3\u3067\u3082PET\u30d5\u30e9\u30c3\u30af\u306bPVC\u30ec\u30d9\u30eb\u304c100\uff5e200ppm\u4ee5\u4e0a\u306b\u306a\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u5404\u30b9\u30c6\u30c3\u30d7\u304c\u5b9f\u969b\u306b\u53d6\u308a\u9664\u3051\u308b\u3082\u306e\uff08\u7c21\u5358\u306a\u53c2\u7167\uff09<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u30b9\u30c6\u30c3\u30d7<\/th><th>Best at removing<\/th><th>Limits for PVC control<\/th><\/tr><\/thead><tbody><tr><td>Front-end sorting (manual \/ optical)<\/td><td>\u5168\u4f53\u306ePVC\u5bb9\u5668\u3001\u660e\u3089\u304b\u306b\u898f\u683c\u5916\u306e\u30a2\u30a4\u30c6\u30e0<\/td><td>\u5c0f\u3055\u306a\u7834\u7247\u3084\u6df7\u5728\u3057\u305f\u30d5\u30e9\u30c3\u30af\u304c\u901a\u904e\u3059\u308b<\/td><\/tr><tr><td>De-labelling \/ sleeve removal<\/td><td>\u30b9\u30ea\u30fc\u30d6\u3001\u30e9\u30d9\u30eb\u3001\u30b7\u30fc\u30eb\u304c\u7834\u7247\u306b\u306a\u308b\u524d\u306b<\/td><td>\u6750\u6599\u304c\u5c0f\u3055\u306a\u30d4\u30fc\u30b9\u306b\u7815\u304b\u308c\u305f\u5f8c\u306f\u52b9\u679c\u304c\u4f4e\u304f\u306a\u308b<\/td><\/tr><tr><td>Hot wash + friction wash<\/td><td>\u63a5\u7740\u5264\u3001\u6c5a\u308c\u3001\u6709\u6a5f\u7269\uff1b\u5168\u4f53\u7684\u306a\u6e05\u6383\u3092\u5411\u4e0a\u3055\u305b\u307e\u3059<\/td><td>\u6e05\u6383\u306f\u30dd\u30ea\u30de\u30fc\u306e\u5206\u96e2\u3067\u306f\u3042\u308a\u307e\u305b\u3093\uff1bPVC\u306f\u6b8b\u308a\u307e\u3059<\/td><\/tr><tr><td>Float-sink<\/td><td>PP\/HDPE vs PET separation (caps\/labels)<\/td><td>PET\u3068PVC\u306e\u5bc6\u5ea6\u5206\u96e2\u306f\u4e00\u8cab\u3057\u3066\u9bae\u660e\u3067\u306f\u3042\u308a\u307e\u305b\u3093<\/td><\/tr><tr><td>Dry polishing (often electrostatic)<\/td><td>\u4e7e\u71e5\u30d5\u30e9\u30c3\u30af\u306b\u542b\u307e\u308c\u308b\u30c8\u30ec\u30fc\u30b9PVC\u3068\u4ed6\u306e\u30dd\u30ea\u30de\u30fc<\/td><td>\u6c34\u5206\u3068\u7c92\u5b50\u5f84\u306e\u53b3\u5bc6\u306a\u5236\u5fa1\u304c\u5fc5\u8981\u3067\u3059<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e7e\u71e5\u96fb\u6c17\u9759\u96fb\u5206\u96e2\u304c\u629b\u5149\u30b9\u30c6\u30c3\u30d7\u3068\u3057\u3066\u5fc5\u8981\u306a\u7406\u7531<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">PVC\u30ec\u30d9\u30eb\u309250ppm\u4ee5\u4e0b\u306b\u62bc\u3057\u4e0b\u3052\u308b\u305f\u3081\u306b\u3001\u591a\u304f\u306e\u30ea\u30b5\u30a4\u30af\u30e9\u30fc\u304c\u4e7e\u71e5\u5f8c\u306e <strong>dry electrostatic separation<\/strong> \u30b9\u30c6\u30fc\u30b8\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002\u96fb\u6c17\u9759\u96fb\u5206\u96e2\u6a5f\u306fPET\u3068PVC\u306e\u96fb\u6c17\u7684\u6027\u8cea\u306e\u9055\u3044\u3092\u5229\u7528\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For a practical equipment overview, see: <a href=\"https:\/\/www.rumtoo.com\/plastic-electrostatic-separator\/\">Plastic Electrostatic Separator<\/a><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30d5\u30e9\u30c3\u30af\u306f\u5145\u96fb\u6a5f\u69cb\uff08\u51a0\u5145\u96fb\u307e\u305f\u306f\u6469\u64e6\u5145\u96fb\uff09\u306b\u3055\u3089\u3055\u308c\u3001\u7570\u306a\u308b\u30dd\u30ea\u30de\u30fc\u306b\u7570\u306a\u308b\u6975\u6027\u3092\u5f15\u304d\u8d77\u3053\u3057\u307e\u3059\u3002.<\/li>\n\n\n\n<li>\u5145\u96fb\u3055\u308c\u305f\u30d5\u30e9\u30c3\u30af\u306f\u96fb\u6975\u9593\u306e\u96fb\u5834\u307e\u305f\u306f\u5145\u96fb\u3055\u308c\u305f\u30c9\u30e9\u30e0\u3092\u901a\u904e\u3057\u307e\u3059\u3002.<\/li>\n\n\n\n<li>\u5145\u96fb\u3068\u5c0e\u96fb\u6027\u306b\u57fa\u3065\u3044\u3066\u3001PET\u3068PVC\u306f\u7570\u306a\u308b\u8ecc\u8de1\u3092\u8fbf\u308a\u3001\u5206\u96e2\u3055\u308c\u305f\u5206\u753b\u3068\u3057\u3066\u53ce\u96c6\u3055\u308c\u307e\u3059\u3002.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u30b1\u30fc\u30b9\u30b9\u30bf\u30c7\u30a3\u3068\u6a5f\u5668\u30b5\u30d7\u30e9\u30a4\u30e4\u30fc\u306f\u3001\u9069\u5207\u306b\u7d71\u5408\u3055\u308c\u305f\u5834\u5408\u3001\u96fb\u6c17\u9759\u96fb\u5206\u96e2\u306fPET\u30d5\u30e9\u30c3\u30af\u306ePVC\u6c5a\u67d3\u3092\u7d041,000ppm\u304b\u308950ppm\u4ee5\u4e0b\u306b\u6e1b\u5c11\u3055\u305b\u308b\u3068\u5831\u544a\u3057\u3066\u304a\u308a\u3001\u4ed6\u306e\u30dd\u30ea\u30de\u30fc\u6c5a\u67d3\u3082\u9664\u53bb\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u54c1\u8cea\u7ba1\u7406\u3068\u30d1\u30c3\u30b1\u30fc\u30b8\u30f3\u30b0\u306e\u524d\u306e\u6700\u7d42\u7cbe\u88fd\u30b9\u30c6\u30c3\u30d7\u3068\u3057\u3066\u3001\u3053\u306e\u6280\u8853\u306f\u7279\u306b\u9b45\u529b\u7684\u3067\u3059\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Process conditions that influence electrostatic performance<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">To achieve reliable separation and stay below 50 ppm, several process parameters need to be controlled:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Moisture content:<\/strong> Electrostatic separators generally require dry feed, often with residual moisture below about 0.5\u20130.8%, to prevent charges from dissipating.<\/li>\n\n\n\n<li><strong>Particle size and shape:<\/strong> Flake size should be within a defined range (for example below 10\u201312 mm), with limited fines, to maintain stable trajectories in the electric field.<\/li>\n\n\n\n<li><strong>Blend composition:<\/strong> Feed composition should be relatively stable, or the machine should be adjusted for different PVC\/PET ratios to keep middling and reject fractions under control.<\/li>\n\n\n\n<li><strong>Voltage, electrode configuration and splitter settings:<\/strong> Optimizing these parameters is critical to balance PVC removal efficiency with PET yield and minimize losses.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">In practice, many plants implement a two-stage strategy: a first electrostatic pass to separate a high-PET product and a high-PVC reject, followed by a second pass on middling material to further reduce PVC and recover PET.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Role of integrated PET bottle washing lines<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">End-to-end system suppliers show that combining a well-designed PET bottle washing line with a final electrostatic polishing stage can deliver flake purities above 99.8%, with very low PVC levels. Typical design elements include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Bale opening, metal removal and pre-sorting.<\/li>\n\n\n\n<li>Automated bottle sorting (NIR) plus manual quality control.<\/li>\n\n\n\n<li>High-efficiency label removal, hot wash and friction cleaning.<\/li>\n\n\n\n<li>Multi-stage float-sink and density separation for polyolefins.<\/li>\n\n\n\n<li>Low-residue drying to reach the required moisture level for electrostatic separation.<\/li>\n\n\n\n<li>One or more electrostatic separators for PET\/PVC and other mixed plastics.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">When these stages are properly engineered and tuned, the result is a stable output of clean PET flakes ready for food-grade or high-performance applications, with PVC well below the 50 ppm threshold.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Monitoring, testing and continuous improvement<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Reaching a PVC target once is not enough \u2013 recyclers need to demonstrate consistent performance over time. This usually involves:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Regular laboratory testing of PVC content, often using oven tests or specialized analytical methods, against defined ppm limits.<\/li>\n\n\n\n<li>Process monitoring on key variables such as bale quality, sorting reject rates, wash performance and electrostatic separator settings.<\/li>\n\n\n\n<li>Periodic audits of the line to identify new contamination sources or drift in performance.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Plants that formalize this into a quality management system are better positioned to meet brand-owner requirements and secure long-term contracts for high-value rPET.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Acceptance &amp; QA: how to prove you can hold &lt; 50 ppm<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">To make \u201cPVC &lt; 50 ppm\u201d defensible for buyers, define your acceptance plan and stick to it:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Sampling plan:<\/strong> specify where and how often samples are taken (e.g., after drying \/ after polishing \/ before packaging).<\/li>\n\n\n\n<li><strong>Trend, not snapshots:<\/strong> track results over time and tie excursions to inbound bales, sleeve types, moisture drift, or separator settings.<\/li>\n\n\n\n<li><strong>Process KPIs to log:<\/strong> inbound bale quality, optical-sorting reject rates, dryer moisture, flake size distribution (fines), electrostatic voltage\/splitter settings, and PET yield losses.<\/li>\n\n\n\n<li><strong>Escalation rules:<\/strong> what happens when you see a spike (hold lot, reprocess middlings, adjust settings, audit bale source).<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Putting it all together<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Controlling PVC in PET bottle recycling lines below 50 ppm is achievable, but it requires a system-level view:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>PVC\u3092\u3067\u304d\u308b\u3060\u3051\u30e9\u30a4\u30f3\u304b\u3089\u6392\u9664\u3059\u308b\u305f\u3081\u306b\u3001\u30d0\u30ec\u30fc\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u3068\u30d5\u30ed\u30f3\u30c8\u30a8\u30f3\u30c9\u306e\u5206\u5225\u3092\u4f7f\u7528\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/li>\n\n\n\n<li>\u7c97\u3044\u6c5a\u67d3\u7269\u3092\u53d6\u308a\u9664\u304f\u305f\u3081\u306b\u5805\u7262\u306a\u6d17\u6d44\u3068\u5bc6\u5ea6\u5206\u5225\u3092\u4f7f\u7528\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/li>\n\n\n\n<li>\u6700\u7d42\u7684\u306a\u30dd\u30ea\u30de\u30fc\u306e\u6700\u7d42\u5206\u5225\u30b9\u30c6\u30c3\u30d7\u3068\u3057\u3066\u4e7e\u71e5\u96fb\u6c17\u5206\u5225\u3092\u8ffd\u52a0\u3057\u3001\u6700\u5f8c\u306ePVC\u3068\u7570\u306a\u308b\u30dd\u30ea\u30de\u30fc\u3092\u6355\u7372\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/li>\n\n\n\n<li>\u30c6\u30b9\u30c8\u3068\u30d7\u30ed\u30bb\u30b9\u7ba1\u7406\u3092\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u3057\u3066\u3001\u6307\u5b9a\u3092\u4e00\u8cab\u3057\u3066\u6e80\u305f\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u8a3c\u660e\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u308c\u3089\u306e\u6226\u7565\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001PET\u30ea\u30b5\u30a4\u30af\u30eb\u696d\u8005\u306f\u3088\u308a\u9ad8\u3044\u54c1\u8cea\u306e\u30d5\u30e9\u30c3\u30af\u3092\u751f\u7523\u3057\u3001\u3088\u308a\u53b3\u3057\u3044\u7d42\u7aef\u5e02\u5834\u306b\u30a2\u30af\u30bb\u30b9\u3057\u3001\u904b\u55b6\u5168\u4f53\u306e\u7d4c\u6e08\u6027\u3092\u5411\u4e0a\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3088\u304f\u3042\u308b\u8cea\u554f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u30dc\u30c8\u30eb\u304b\u3089\u30dc\u30c8\u30eb\u3084\u98df\u54c1\u63a5\u89e6\u7528\u306erPET\u306b\u3069\u306e\u7a0b\u5ea6\u306ePVC\u30ec\u30d9\u30eb\u304c\u5fc5\u8981\u3067\u3059\u304b\uff1f<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Many high-spec buyers treat <strong>\u2264 50 ppm<\/strong> \u91cd\u8981\u306a\u5236\u9650\u3068\u3057\u3066\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3084\u30ea\u30b9\u30af\u8a31\u5bb9\u5ea6\u306b\u5fdc\u3058\u3066\u3088\u308a\u53b3\u3057\u3044\u3082\u306e\u304c\u63a8\u9032\u3055\u308c\u307e\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u5f37\u529b\u306a\u6d17\u6d44\u30e9\u30a4\u30f3\u3060\u3051\u3067PVC &lt; 50 ppm\u3092\u4fdd\u8a3c\u3067\u304d\u307e\u3059\u304b\uff1f<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u901a\u5e38\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u6d17\u6d44\u306f\u571f\u58cc\/\u63a5\u7740\u5264\/\u6709\u6a5f\u7269\u3092\u52b9\u679c\u7684\u306b\u53d6\u308a\u9664\u304d\u307e\u3059\u304c\u3001PVC\u306e\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u306b\u306f\u305d\u308c\u304c\u5fc5\u8981\u3067\u3059 <strong>polymer-selective separation<\/strong>, especially for small fragments.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u96fb\u6c17\u5206\u5225\u304c\u3069\u306e\u3088\u3046\u306b\u306a\u305c\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u304c\u52a3\u308a\u307e\u3059\u304b\uff1f<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Feed conditions: <strong>moisture too high<\/strong>, \u904e\u5270\u306a\u5fae\u7c92\u5b50\u3084\u4e0d\u5b89\u5b9a\u306a\u539f\u6599\u7d44\u6210\/\u8a2d\u5b9a\u304c\u539f\u56e0\u3067\u3059\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Where should PVC testing be done?<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5c11\u306a\u304f\u3068\u3082\u3001\u6700\u7d42\u88fd\u54c1\u30dd\u30a4\u30f3\u30c8\uff08\u5305\u88c5\u524d\u306b\uff09\u306b\u8fd1\u304f\u3001\u4e2d\u9593\u30c1\u30a7\u30c3\u30af\uff08\u4e7e\u71e5\u5f8c\/\u30dd\u30ea\u30c3\u30b7\u30e5\u5f8c\u306a\u3069\uff09\u3092\u4f7f\u7528\u3057\u3066\u3001\u9038\u8131\u304c\u3069\u306e\u90e8\u5206\u304b\u3089\u59cb\u307e\u3063\u305f\u304b\u3092\u8a3a\u65ad\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/p>","protected":false},"excerpt":{"rendered":"<p>Controlling PVC contamination is one of the toughest challenges in PET bottle recycling, especially when you target high-end applications and food-grade rPET. Even at concentrations around 50 ppm, PVC can damage PET quality, causing brittleness, yellowing and unwanted by-products during extrusion. For PET recyclers, keeping PVC as low as possible is not just a technical requirement \u2013 it directly impacts selling price, customer acceptance and long-term profitability. In this article, we look at where PVC comes from in a typical PET bottle line, what \u201cgood\u201d looks like in terms of ppm levels, and how a combination of front-end sorting, washing and dry electrostatic separation can help you reliably stay below &hellip; <a href=\"https:\/\/www.recyclemachine.net\/ja\/how-to-control-pvc-in-pet-bottle-recycling-lines-below-50-ppm\/\" class=\"more-link\">\u8aad\u307f\u7d9a\u3051\u3066 <span class=\"screen-reader-text\">PET\u30dc\u30c8\u30eb\u30ea\u30b5\u30a4\u30af\u30eb\u30e9\u30a4\u30f3\u3067PVC\u309250 ppm\u4ee5\u4e0b\u306b\u7ba1\u7406\u3059\u308b\u65b9\u6cd5<\/span><\/a><\/p>","protected":false},"author":1,"featured_media":13921,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1997],"tags":[],"class_list":["post-13919","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-buying-guides"],"tsf_seo":{"title":"","description":""},"_links":{"self":[{"href":"https:\/\/www.recyclemachine.net\/ja\/wp-json\/wp\/v2\/posts\/13919","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.recyclemachine.net\/ja\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.recyclemachine.net\/ja\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.recyclemachine.net\/ja\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.recyclemachine.net\/ja\/wp-json\/wp\/v2\/comments?post=13919"}],"version-history":[{"count":4,"href":"https:\/\/www.recyclemachine.net\/ja\/wp-json\/wp\/v2\/posts\/13919\/revisions"}],"predecessor-version":[{"id":14364,"href":"https:\/\/www.recyclemachine.net\/ja\/wp-json\/wp\/v2\/posts\/13919\/revisions\/14364"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.recyclemachine.net\/ja\/wp-json\/wp\/v2\/media\/13921"}],"wp:attachment":[{"href":"https:\/\/www.recyclemachine.net\/ja\/wp-json\/wp\/v2\/media?parent=13919"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.recyclemachine.net\/ja\/wp-json\/wp\/v2\/categories?post=13919"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.recyclemachine.net\/ja\/wp-json\/wp\/v2\/tags?post=13919"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}