Plastic products are made from many different polymers, and each behaves differently during sorting, washing, shredding, separation, and reprocessing. Correctly identifying the plastic type is therefore one of the most important steps in any recycling operation.<\/p>\n\n\n\n
The numbers commonly found on plastic products\u2014from 1 to 7<\/strong>\u2014are known as Resin Identification Codes (RICs)<\/strong>. They help identify the primary resin used to manufacture a plastic article.<\/p>\n\n\n\n \u0625\u062c\u0627\u0628\u0629 \u0633\u0631\u064a\u0639\u0629:<\/strong> Plastic numbers 1\u20137 identify different resin categories. They do not<\/strong> automatically mean that a product is recyclable. Actual recyclability depends on the polymer, product design, contamination level, collection system, and available recycling technology.<\/p>\n\n\n\n For recyclers, understanding these plastic types also helps determine which sorting method, washing process, shredder, crusher, separator, and pelletizing system should be used.<\/p>\n\n\n\n The Resin Identification Code system was originally developed to help identify different plastic resins and support sorting.<\/p>\n\n\n\n The seven main categories are:<\/p>\n\n\n\n It is important to distinguish a resin identification code<\/strong> from a recycling claim. According to ASTM D7611\/D7611M, the code identifies the plastic resin used in an article; the presence of a code does not guarantee that the product can or will be recycled.<\/p>\n\n\n\n *\u0642\u064a\u0645 \u0627\u0644\u0643\u062b\u0627\u0641\u0629 \u062a\u0642\u0631\u064a\u0628\u064a\u0629. \u0627\u0644\u0643\u062b\u0627\u0641\u0629 \u0627\u0644\u0641\u0639\u0644\u064a\u0629 \u062a\u062e\u062a\u0644\u0641 \u0648\u0641\u0642\u0627\u064b \u0644\u0646\u0648\u0639 \u0627\u0644\u0631\u0633\u0648\u0645\u064a\u060c \u0627\u0644\u0645\u0645\u0644\u0623\u060c \u062a\u0639\u0632\u064a\u0632\u060c \u0645\u0636\u0627\u0641\u0629\u060c \u0648\u0628\u0646\u064a\u0629 \u0627\u0644\u0645\u0646\u062a\u062c.<\/p>\n\n\n\n \u0627\u0644\u0643\u062b\u0627\u0641\u0629 \u0645\u0641\u064a\u062f\u0629 \u0628\u0634\u0643\u0644 \u062e\u0627\u0635 \u0641\u064a \u0625\u0639\u0627\u062f\u0629 \u0627\u0644\u062a\u062f\u0648\u064a\u0631 \u0644\u0623\u0646\u0647\u0627 \u062a\u0633\u0645\u062d \u0628\u0641\u0635\u0644 \u0628\u0639\u0636 \u0627\u0644\u0628\u0644\u0627\u0633\u062a\u064a\u0643 \u0627\u0644\u0641\u0631\u0632 \u0628\u064a\u0646 \u0627\u0644\u0633\u0627\u0626\u0644 \u0648\u0627\u0644\u0633\u0627\u0626\u0644<\/strong>. \u0648\u0645\u0639 \u0630\u0644\u0643\u060c \u0644\u0627 \u064a\u0645\u0643\u0646 \u0644\u0644\u0641\u0635\u0644 \u0628\u0627\u0644\u0643\u062b\u0627\u0641\u0629 \u0648\u062d\u062f\u0647 \u0623\u0646 \u064a\u0641\u0631\u0642 \u0628\u064a\u0646 \u0643\u0644 \u0627\u0644\u0628\u0648\u0644\u064a\u0645\u0631\u0627\u062a.<\/p>\n\n\n\n \u0639\u0644\u0649 \u0633\u0628\u064a\u0644 \u0627\u0644\u0645\u062b\u0627\u0644\u060c \u0643\u0644\u0627\u064b \u0645\u0646 PP \u0648\u0645\u0639\u0638\u0645 \u0623\u0646\u0648\u0627\u0639 PE \u0644\u062f\u064a\u0647\u0627 \u0643\u062b\u0627\u0641\u0629 \u0623\u0642\u0644 \u0645\u0646 \u0627\u0644\u0645\u0627\u0621 \u0648\u062a\u0628\u0642\u0649 \u0639\u0627\u062f\u0629\u064b \u0641\u064a \u062e\u0632\u0627\u0646 \u0627\u0644\u0645\u0627\u0621 \u0627\u0644\u0642\u064a\u0627\u0633\u064a.<\/p>\n\n\n\n PET, also written as PETE, is one of the most widely recycled plastics.<\/p>\n\n\n\n PET is commonly found in:<\/p>\n\n\n\n PET is strong, lightweight, transparent, and has excellent barrier properties, making it particularly suitable for beverage and food packaging.<\/p>\n\n\n\n Typical PET density is approximately 1.34\u20131.39 g\/cm\u00b3<\/strong>, meaning PET normally sinks in water.<\/p>\n\n\n\n This property is extremely useful during bottle recycling.<\/p>\n\n\n\n After PET bottles are crushed into flakes, a sink-float separation tank can help separate:<\/p>\n\n\n\n This allows a relatively simple density-separation stage to remove much of the PP and PE contamination from PET flakes.<\/p>\n\n\n\n A typical PET bottle recycling process may include:<\/p>\n\n\n\n Debaling \u2192 sorting \u2192 label removal \u2192 crushing \u2192 sink-float separation \u2192 hot washing \u2192 friction washing \u2192 rinsing \u2192 dewatering \u2192 drying \u2192 flake sorting<\/strong><\/p>\n\n\n\n Clean PET flakes can then be used for applications including polyester fiber, strapping, sheet extrusion, or further pelletizing.<\/p>\n\n\n\n For large-scale post-consumer bottle recycling, a complete \u0646\u0638\u0627\u0645 \u0625\u0639\u0627\u062f\u0629 \u062a\u062f\u0648\u064a\u0631 \u0632\u062c\u0627\u062c\u0627\u062a PET<\/strong> combines sorting, size reduction, washing, density separation, and drying into a continuous process.<\/p>\n\n\n\n Common contaminants include:<\/p>\n\n\n\n PVC contamination is particularly undesirable in PET recycling because PET and PVC have different thermal characteristics and must be carefully separated before high-quality reprocessing.<\/p>\n\n\n\n HDPE is one of the most common rigid plastics used in consumer packaging and industrial applications.<\/p>\n\n\n\n Typical HDPE waste includes:<\/p>\n\n\n\n HDPE combines toughness, chemical resistance, impact resistance, and relatively low density.<\/p>\n\n\n\n Typical HDPE density is around 0.94\u20130.97 \u062c\u0631\u0627\u0645\/\u0633\u0645\u00b3<\/strong>, so unfilled HDPE normally floats in water.<\/p>\n\n\n\n This makes water-based density separation useful when HDPE is mixed with heavier plastics such as PET or PVC.<\/p>\n\n\n\n However, fillers and additives can change the density of a finished HDPE product.<\/p>\n\n\n\n Rigid HDPE recycling commonly involves:<\/p>\n\n\n\n Sorting \u2192 shredding or crushing \u2192 washing \u2192 friction cleaning \u2192 sink-float separation \u2192 dewatering \u2192 drying \u2192 pelletizing<\/strong><\/p>\n\n\n\n Large products such as drums, thick containers, pallets, lumps, and pipes may require primary size reduction before granulation.<\/p>\n\n\n\n \u0623 \u0643\u0633\u0627\u0631\u0629 \u0628\u0644\u0627\u0633\u062a\u064a\u0643\u064a\u0629 \u0634\u062f\u064a\u062f\u0629 \u0627\u0644\u062a\u062d\u0645\u0644<\/strong> or rigid-plastic shredder can be used for thick-walled material, while long HDPE pipes often require a dedicated pipe shredding system.<\/p>\n\n\n\n For contaminated post-consumer rigid plastic, a Rigid Plastic Washing Line for PP, HDPE and PVC<\/strong> can integrate size reduction, washing, separation, and drying.<\/p>\n\n\n\n Typical issues include:<\/p>\n\n\n\n The required equipment therefore depends heavily on whether the feedstock consists of clean industrial scrap or contaminated post-consumer material.<\/p>\n\n\n\n PVC is a versatile plastic used extensively in construction, infrastructure, flooring, electrical products, and industrial applications.<\/p>\n\n\n\n It exists in both rigid PVC<\/strong> \u0648 flexible PVC<\/strong> forms.<\/p>\n\n\n\n Typical PVC waste includes:<\/p>\n\n\n\n PVC contains chlorine as part of its polymer structure and may also contain significant quantities of additives such as:<\/p>\n\n\n\n Different PVC formulations can therefore behave very differently during recycling.<\/p>\n\n\n\n Clean production scrap from PVC pipe or profile manufacturing is generally much easier to recycle than mixed post-consumer flexible PVC waste.<\/p>\n\n\n\n PVC usually has a density above 1.0 g\/cm\u00b3<\/strong> and therefore normally sinks in water.<\/p>\n\n\n\n Its actual density varies considerably depending on additives and fillers.<\/p>\n\n\n\n Clean rigid PVC scrap may be processed through:<\/p>\n\n\n\n Sorting \u2192 crushing \u2192 metal removal \u2192 fine grinding if required \u2192 classification \u2192 re-extrusion<\/strong><\/p>\n\n\n\n Long PVC pipes and profiles present a feeding challenge for conventional crushers. A dedicated Crusher for PVC Pipe & Profiles<\/strong> allows long material to be fed horizontally for controlled size reduction.<\/p>\n\n\n\n Some PVC applications also require the crushed material to be reduced further into fine powder using a pulverizer.<\/p>\n\n\n\n The key challenge is maintaining a consistent PVC stream.<\/p>\n\n\n\n Mixing PVC with polymers such as PET, PE, or PP can reduce the quality of the recovered material and create processing problems downstream.<\/p>\n\n\n\n For this reason, effective polymer identification and sorting are especially important when processing mixed plastic waste.<\/p>\n\n\n\n LDPE is a flexible polyethylene widely used in packaging film.<\/p>\n\n\n\n Unlike rigid HDPE containers, LDPE waste is often thin, lightweight, dirty, and difficult to feed consistently into recycling machinery.<\/p>\n\n\n\n LDPE and related flexible PE materials are commonly found in:<\/p>\n\n\n\n Typical LDPE density is approximately 0.91\u20130.94 \u062c\u0631\u0627\u0645\/\u0633\u0645\u00b3<\/strong>, so it normally floats in water.<\/p>\n\n\n\n Flexible plastic film creates several processing problems:<\/p>\n\n\n\n Agricultural film may contain particularly high levels of soil, sand, organic matter, and moisture.<\/p>\n\n\n\n A typical process is:<\/p>\n\n\n\n Sorting \u2192 shredding \u2192 washing \u2192 friction washing \u2192 float separation \u2192 dewatering \u2192 squeezing\/drying \u2192 densifying \u2192 pelletizing<\/strong><\/p>\n\n\n\n For heavily contaminated flexible waste, a dedicated \u062e\u0637 \u063a\u0633\u064a\u0644 \u0644\u0625\u0639\u0627\u062f\u0629 \u062a\u062f\u0648\u064a\u0631 \u0623\u063a\u0634\u064a\u0629 \u0627\u0644\u0628\u0648\u0644\u064a \u0628\u0631\u0648\u0628\u064a\u0644\u064a\u0646\/\u0627\u0644\u0628\u0648\u0644\u064a \u0625\u064a\u062b\u064a\u0644\u064a\u0646<\/strong> is normally more suitable than machinery designed for rigid plastics.<\/p>\n\n\n\n After washing, a film squeezer or densifier can reduce moisture and increase bulk density before extrusion.<\/p>\n\n\n\n Polypropylene is another major recyclable thermoplastic and is widely used in both rigid and flexible products.<\/p>\n\n\n\n Typical applications include:<\/p>\n\n\n\n PP has one of the lowest densities among common plastics, typically around 0.89\u20130.92 \u062c\u0631\u0627\u0645\/\u0633\u0645\u00b3<\/strong>.<\/p>\n\n\n\n It therefore normally floats in water.<\/p>\n\n\n\n Not reliably using ordinary water alone.<\/p>\n\n\n\n Both PP and most PE grades have densities below 1.0 g\/cm\u00b3 and therefore tend to float in a standard sink-float tank.<\/p>\n\n\n\n This means that a simple water tank is highly effective for separating PP\/PE from heavier polymers such as PET or PVC, but usually cannot provide precise PP-versus-PE separation<\/strong>.<\/p>\n\n\n\n When PP and PE must be separated from each other, additional techniques may be required depending on material condition and purity requirements.<\/p>\n\n\n\n For rigid PP:<\/p>\n\n\n\n Sorting \u2192 shredding\/crushing \u2192 washing \u2192 separation \u2192 drying \u2192 pelletizing<\/strong><\/p>\n\n\n\n For PP woven bags or flexible materials:<\/p>\n\n\n\n Shredding \u2192 washing \u2192 friction cleaning \u2192 dewatering \u2192 squeezing\/densifying \u2192 pelletizing<\/strong><\/p>\n\n\n\n Clean PP production scrap may require only size reduction and extrusion, while contaminated post-consumer PP requires a more complete washing system.<\/p>\n\n\n\n Polystyrene is often associated with foam packaging, but not all PS is foam.<\/p>\n\n\n\n Common forms include:<\/p>\n\n\n\n Applications include:<\/p>\n\n\n\n Solid PS resin typically has a density slightly above water and therefore generally sinks.<\/p>\n\n\n\n Foamed products such as EPS behave differently because their structure contains a large volume of air, giving the finished product a very low apparent bulk density.<\/p>\n\n\n\n EPS is extremely lightweight and bulky.<\/p>\n\n\n\n Transporting untreated EPS waste can therefore be inefficient because a truck or container may reach its volume limit long before reaching its weight capacity.<\/p>\n\n\n\n EPS recycling frequently includes a volume-reduction stage such as:<\/p>\n\n\n\n Crushing \u2192 compacting or hot melting \u2192 pelletizing<\/strong><\/p>\n\n\n\n Densification greatly reduces storage and transportation volume before further processing.<\/p>\n\n\n\n Challenges may include:<\/p>\n\n\n\n Clean industrial PS or HIPS scrap can nevertheless be mechanically recycled when properly identified and separated.<\/p>\n\n\n\n Code 7 is often misunderstood.<\/p>\n\n\n\n It does not<\/strong> mean that the plastic is automatically a mixed material or that it cannot be recycled.<\/p>\n\n\n\n Instead, Code 7 acts as a broad category for plastics that do not fall under Codes 1 through 6.<\/p>\n\n\n\n Depending on the product and coding system, this category can include:<\/p>\n\n\n\n These materials have very different properties and therefore cannot be treated as one recycling stream.<\/p>\n\n\n\n Sometimes, yes.<\/p>\n\n\n\n A clean and well-sorted stream of industrial ABS, PC, PA, or PMMA scrap may be suitable for mechanical recycling.<\/p>\n\n\n\n The difficulty occurs when different Code 7 polymers are mixed together or when the exact resin composition is unknown.<\/p>\n\n\n\n For engineering plastics, accurate identification may require more sophisticated sorting or analytical methods before shredding, separation, and extrusion.<\/p>\n\n\n\n Resin codes are useful when they are visible, but industrial recycling plants cannot rely entirely on printed numbers.<\/p>\n\n\n\n Labels may be missing, products may be broken, and industrial scrap may never have carried a resin identification symbol.<\/p>\n\n\n\n Several identification and separation methods are therefore commonly used.<\/p>\n\n\n\n RIC markings provide a quick initial indication of polymer type.<\/p>\n\n\n\n They are particularly useful for manually identifying intact packaging and molded products.<\/p>\n\n\n\n However, they should not be treated as a complete sorting solution.<\/p>\n\n\n\n Experienced operators can often identify materials using characteristics such as:<\/p>\n\n\n\n Manual sorting is simple but becomes less practical at high throughput or when visually similar polymers are mixed.<\/p>\n\n\n\n Density separation is one of the most widely used techniques in plastic recycling.<\/p>\n\n\n\n In a standard water-based sink-float tank:<\/p>\n\n\n\n This makes sink-float separation especially useful in applications such as PET bottle recycling, where PET flakes can be separated from floating PP and PE caps.<\/p>\n\n\n\n However, density can be changed by fillers, additives, reinforcements, foaming, or multilayer construction.<\/p>\n\n\n\n \u0623 \u062e\u0632\u0627\u0646 \u0627\u0644\u0641\u0635\u0644 \u0628\u0627\u0644\u0648\u0639\u0629 \u0627\u0644\u0639\u0648\u0627\u0645\u0629<\/strong> should therefore be considered one part of a complete sorting process rather than a universal polymer separator.<\/p>\n\n\n\n Near-infrared, or NIR, sorting systems analyze reflected light to identify many different polymer types automatically.<\/p>\n\n\n\n NIR technology is widely used in high-throughput sorting operations.<\/p>\n\n\n\n However, performance depends on factors such as:<\/p>\n\n\n\n Conventional NIR systems may also have difficulty identifying some carbon-black plastics.<\/p>\n\n\n\n Fourier-transform infrared spectroscopy, or FTIR, can be used to identify unknown polymers by analyzing their infrared absorption spectrum.<\/p>\n\n\n\n FTIR is particularly useful for:<\/p>\n\n\n\n It is generally an identification tool rather than a bulk mechanical separation process.<\/p>\n\n\n\n After plastics have been properly size-reduced, cleaned, and dried, electrostatic separation can be used in certain applications to separate mixed polymer flakes according to differences in electrical behavior.<\/p>\n\n\n\n The suitability of the process depends strongly on:<\/p>\n\n\n\n Material testing is normally recommended before selecting an electrostatic separation system.<\/p>\n\n\n\n A recycling line does more than make plastic smaller.<\/p>\n\n\n\n The objective is to produce a recycled material with sufficiently consistent purity, moisture level, particle size, and composition for its intended downstream application.<\/p>\n\n\n\n Poor polymer separation can cause:<\/p>\n\n\n\n The required purity depends on the final product.<\/p>\n\n\n\n A recycling plant producing low-grade molded products may tolerate more contamination than a plant producing high-quality pellets, sheets, fibers, or bottle-grade material.<\/p>\n\n\n\n For this reason, the correct recycling process should always be designed around both the feedstock<\/strong> \u0648 required final product<\/strong>.<\/p>\n\n\n\n There is no single plastic recycling machine that is ideal for every feedstock.<\/p>\n\n\n\n Before selecting a shredder, crusher, washing line, separation system, or pelletizer, several factors should be evaluated.<\/p>\n\n\n\n Determine whether the material is:<\/p>\n\n\n\n Whenever possible, avoid designing a recycling process around unidentified mixed material.<\/p>\n\n\n\n The same polymer may require completely different equipment depending on its physical form.<\/p>\n\n\n\n For example, HDPE may arrive as:<\/p>\n\n\n\n LDPE may arrive as:<\/p>\n\n\n\n Material dimensions, wall thickness, bulk density, and feeding behavior directly affect machine selection.<\/p>\n\n\n\n Determine whether the material contains:<\/p>\n\n\n\n Clean factory scrap may require only crushing and pelletizing, while heavily contaminated post-consumer waste may require a complete washing and separation line.<\/p>\n\n\n\n The recycling process should be designed around the desired output:<\/p>\n\n\n\n Equipment that is suitable for producing 20\u201350 mm shredded material is very different from a system designed to produce clean extrusion-grade pellets.<\/p>\n\n\n\n Specify the required production capacity in kg\/h or tonnes\/h<\/strong>.<\/p>\n\n\n\n Throughput affects:<\/p>\n\n\n\n A complete recycling project should also consider:<\/p>\n\n\n\n Evaluating these factors before equipment selection can prevent expensive modifications later.<\/p>\n\n\n\n They are Resin Identification Codes used to identify the primary plastic resin. Codes 1\u20136 represent several major resin families, while Code 7 covers other plastics outside those categories.<\/p>\n\n\n\n No. A resin identification number identifies the material; it does not guarantee that a collection or recycling system exists for that particular product.<\/p>\n\n\n\n Recyclability depends on the polymer, product design, contamination, regional collection infrastructure, and available processing technology.<\/p>\n\n\n\n Unfilled PP, LDPE, and HDPE normally float because their densities are generally below 1.0 g\/cm\u00b3.<\/p>\n\n\n\n PET, PVC, and solid PS generally sink.<\/p>\n\n\n\n Fillers, additives, foaming, and composite construction can change this behavior.<\/p>\n\n\n\n Not effectively in most cases because both PP and common PE grades normally float in water.<\/p>\n\n\n\n A standard water-based sink-float tank is more effective for separating floating PP\/PE from heavier materials such as PET or PVC.<\/p>\n\n\n\n Clean, single-polymer streams of PET, HDPE, PP, and PE are widely processed through mechanical recycling.<\/p>\n\n\n\n However, the condition of the material can be more important than the resin code alone. Clean industrial PP scrap may be much easier to recycle than heavily contaminated post-consumer PET, for example.<\/p>\n\n\n\n Some Code 7 plastics are recyclable.<\/p>\n\n\n\n Clean ABS, PC, PA, PMMA, and other engineering-plastic production scrap can often be mechanically recycled if the polymer is correctly identified and kept separate.<\/p>\n\n\n\n Mixed, multilayer, or unidentified Code 7 material is considerably more difficult to process.<\/p>\n\n\n\n PVC and PET have different processing characteristics. PVC contamination can negatively affect PET reprocessing and final product quality, making effective sorting important in high-purity PET recycling.<\/p>\n\n\n\n Depending on the feedstock, a recycling line may include:<\/p>\n\n\n\n The correct configuration depends on the plastic type, contamination, required capacity, and target final product.<\/p>\n\n\n\n Understanding plastic recycling codes is a useful starting point, but industrial recycling requires more than simply identifying a number on a product.<\/p>\n\n\n\n Polymer type, density, contamination, physical form, particle size, moisture, and final purity requirements all influence how a recycling line should be designed.<\/p>\n\n\n\n A PET bottle recycling plant may rely heavily on density separation and hot washing. An LDPE film plant needs efficient washing, dewatering, and densification. Long PVC or HDPE pipes require specialized size-reduction equipment. Mixed engineering plastics may require advanced identification and separation before extrusion.<\/p>\n\n\n\n At Rumtoo, we design and manufacture plastic recycling equipment for a wide range of rigid and flexible plastic applications, including plastic shredders, crushers, washing lines, sink-float separation systems, drying equipment, and pelletizing lines<\/strong>.<\/p>\n\n\n\n If you are planning a recycling project, provide the plastic type, material photos, maximum dimensions, contamination level, required output size, target capacity, and local voltage\/frequency<\/strong>. Based on this information, the recycling process and equipment configuration can be matched to the actual feedstock rather than relying on a one-size-fits-all solution.<\/p>","protected":false},"excerpt":{"rendered":" Technical overview of A Complete Plastic Classification Guide: From Waste to Resource. Explore the latest engineering standards and operational best practices for industrial recycling facilities.<\/p>","protected":false},"author":1,"featured_media":15002,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"image","meta":{"footnotes":""},"categories":[1997],"tags":[],"class_list":["post-7722","post","type-post","status-publish","format-image","has-post-thumbnail","hentry","category-buying-guides","post_format-post-format-image"],"tsf_seo":{"title":"\u0643\u0648\u062f \u0625\u0639\u0627\u062f\u0629 \u062a\u062f\u0648\u064a\u0631 \u0627\u0644\u0628\u0644\u0627\u0633\u062a\u064a\u0643 1-7: \u0623\u0646\u0648\u0627\u0639 \u0648\u0627\u0644\u0645\u0631\u0634\u062f \u0644\u0625\u0639\u0627\u062f\u0629 \u0627\u0644\u062a\u062f\u0648\u064a\u0631","description":"\u062a\u0639\u0631\u0641 \u0639\u0644\u0649 \u0645\u0639\u0627\u0646\u064a \u0631\u0645\u0648\u0632 \u0625\u0639\u0627\u062f\u0629 \u062a\u062f\u0648\u064a\u0631 \u0627\u0644\u0628\u0644\u0627\u0633\u062a\u064a\u0643 1\u20137. \u0642\u0627\u0631\u0646 \u0627\u0644\u0628\u0644\u0627\u0633\u062a\u064a\u0643 \u0645\u062b\u0644 PET\u060c HDPE\u060c PVC\u060c LDPE\u060c PP\u060c PS \u0648\u0623\u062e\u0631\u0649 \u0628\u0646\u0627\u0621\u064b \u0639\u0644\u0649 \u0627\u0644\u0643\u062b\u0627\u0641\u0629\u060c \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a\u060c \u0637\u0631\u0642 \u0627\u0644\u062a\u0635\u0641\u064a\u0629 \u0648\u0639\u0645\u0644\u064a\u0627\u062a \u0625\u0639\u0627\u062f\u0629 \u0627\u0644\u062a\u062f\u0648\u064a\u0631."},"_links":{"self":[{"href":"https:\/\/www.recyclemachine.net\/ar\/wp-json\/wp\/v2\/posts\/7722","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.recyclemachine.net\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.recyclemachine.net\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.recyclemachine.net\/ar\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.recyclemachine.net\/ar\/wp-json\/wp\/v2\/comments?post=7722"}],"version-history":[{"count":1,"href":"https:\/\/www.recyclemachine.net\/ar\/wp-json\/wp\/v2\/posts\/7722\/revisions"}],"predecessor-version":[{"id":15001,"href":"https:\/\/www.recyclemachine.net\/ar\/wp-json\/wp\/v2\/posts\/7722\/revisions\/15001"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.recyclemachine.net\/ar\/wp-json\/wp\/v2\/media\/15002"}],"wp:attachment":[{"href":"https:\/\/www.recyclemachine.net\/ar\/wp-json\/wp\/v2\/media?parent=7722"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.recyclemachine.net\/ar\/wp-json\/wp\/v2\/categories?post=7722"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.recyclemachine.net\/ar\/wp-json\/wp\/v2\/tags?post=7722"}],"curies":[{"name":"\u0648\u0648\u0631\u062f\u0628\u0631\u064a\u0633","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}What Do Plastic Recycling Numbers Mean?<\/h2>\n\n\n\n
\n
Plastic Types 1\u20137: Quick Comparison<\/h2>\n\n\n\n
\u0634\u0641\u0631\u0629<\/th> \u0627\u0644\u0628\u0644\u0627\u0633\u062a\u064a\u0643<\/th> Typical Density*<\/th> Behavior in Water<\/th> \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a \u0627\u0644\u0634\u0627\u0626\u0639\u0629<\/th> Recycling Difficulty<\/th><\/tr> #1<\/td> \u062d\u064a\u0648\u0627\u0646 \u0623\u0644\u064a\u0641<\/td> 1.34\u20131.39 g\/cm\u00b3<\/td> Sinks<\/td> \u0632\u062c\u0627\u062c\u0627\u062a \u0627\u0644\u0645\u0634\u0631\u0648\u0628\u0627\u062a\u060c \u0635\u0646\u0627\u062f\u064a\u0642 \u0627\u0644\u0637\u0639\u0627\u0645\u060c \u0627\u0644\u0628\u0648\u0644\u064a \u0625\u0633\u062a\u0631<\/td> \u0645\u0646\u062e\u0641\u0636 - \u0645\u062a\u0648\u0633\u0637<\/td><\/tr> #2<\/td> \u0627\u0644\u0628\u0648\u0644\u064a \u0625\u062b\u064a\u0644\u064a\u0646 \u0639\u0627\u0644\u064a \u0627\u0644\u0643\u062b\u0627\u0641\u0629<\/td> 0.94\u20130.97 \u062c\u0631\u0627\u0645\/\u0633\u0645\u00b3<\/td> Floats<\/td> \u0627\u0644\u0632\u062c\u0627\u062c\u0627\u062a\u060c \u0627\u0644\u062f\u0631\u0648\u0639\u060c \u0627\u0644\u0635\u0646\u0627\u062f\u064a\u0642\u060c \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628<\/td> \u0642\u0644\u064a\u0644<\/td><\/tr> #3<\/td> \u0628\u0648\u0644\u064a \u0643\u0644\u0648\u0631\u064a\u062f \u0627\u0644\u0641\u064a\u0646\u064a\u0644<\/td> ~1.16\u20131.45+ \u062c\u0631\u0627\u0645\/\u0633\u0645\u00b3<\/td> \u0639\u0627\u062f\u0629\u064b \u062a\u063a\u0631\u0642<\/td> \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628\u060c \u0627\u0644\u0623\u0646\u0638\u0645\u0629 \u0627\u0644\u0645\u0639\u062f\u0646\u064a\u0629\u060c \u0627\u0644\u0623\u0631\u0636\u064a\u0627\u062a\u060c \u0639\u0627\u0632\u0644\u0629 \u0627\u0644\u0623\u0633\u0644\u0627\u0643<\/td> \u0645\u062a\u0648\u0633\u0637 \u2013 \u0645\u0631\u062a\u0641\u0639<\/td><\/tr> #4<\/td> \u0627\u0644\u0628\u0648\u0644\u064a \u0625\u062b\u064a\u0644\u064a\u0646 \u0627\u0644\u0645\u0646\u062e\u0641\u0636 \u0627\u0644\u0643\u062b\u0627\u0641\u0629<\/td> 0.91\u20130.94 \u062c\u0631\u0627\u0645\/\u0633\u0645\u00b3<\/td> Floats<\/td> \u0627\u0644\u0634\u0631\u064a\u0637\u060c \u0627\u0644\u0623\u0643\u064a\u0627\u0633\u060c \u0627\u0644\u0634\u0631\u064a\u0637 \u0627\u0644\u0636\u0627\u063a\u0637<\/td> \u0648\u0627\u0633\u0637\u0629<\/td><\/tr> #5<\/td> \u0635<\/td> 0.89\u20130.92 \u062c\u0631\u0627\u0645\/\u0633\u0645\u00b3<\/td> Floats<\/td> \u0627\u0644\u0642\u0628\u0639\u0627\u062a\u060c \u0627\u0644\u0635\u0646\u0627\u062f\u064a\u0642\u060c \u0635\u0646\u0627\u062f\u064a\u0642 \u0627\u0644\u062a\u063a\u0644\u064a\u0641\u060c \u0627\u0644\u0623\u0643\u064a\u0627\u0633 \u0627\u0644\u0645\u062f\u0645\u062c\u0629<\/td> \u0645\u0646\u062e\u0641\u0636 - \u0645\u062a\u0648\u0633\u0637<\/td><\/tr> #6<\/td> \u0645\u0644\u0627\u062d\u0638\u0629<\/td> ~1.04\u20131.07 \u062c\u0631\u0627\u0645\/\u0633\u0645\u00b3<\/td> \u0627\u0644PS \u0627\u0644\u0642\u0627\u0633\u064a\u0629 \u0639\u0627\u062f\u0629\u064b \u062a\u063a\u0631\u0642<\/td> \u0645\u0646\u062a\u062c\u0627\u062a HIPS\u060c \u0635\u062d\u0646\u060c \u0631\u063a\u0648\u0629 EPS<\/td> \u0645\u062a\u0648\u0633\u0637 \u2013 \u0645\u0631\u062a\u0641\u0639<\/td><\/tr> #7<\/td> OTHER<\/td> \u064a\u062e\u062a\u0644\u0641<\/td> \u064a\u062e\u062a\u0644\u0641<\/td> ABS\u060c PC\u060c PA\u060c PMMA\u060c PLA\u060c \u0627\u0644\u0628\u0644\u0627\u0633\u062a\u064a\u0643 \u0645\u062a\u0639\u062f\u062f \u0627\u0644\u0637\u0628\u0642\u0627\u062a<\/td> \u064a\u062e\u062a\u0644\u0641<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
\n\n\n\n#1 PET \u2014 \u0627\u0644\u0628\u0648\u0644\u064a \u0625\u064a\u062b\u064a\u0644\u064a\u0646 \u062a\u064a\u0631\u064a\u0641\u062b\u0627\u0644\u064a\u062a<\/h2>\n\n\n\n
Common PET Products<\/h3>\n\n\n\n
\n
PET Density and Separation<\/h3>\n\n\n\n
\n
PET Recycling Process<\/h3>\n\n\n\n
Main PET Recycling Challenges<\/h3>\n\n\n\n
\n
\n\n\n\n#2 HDPE \u2014 High-Density Polyethylene<\/h2>\n\n\n\n
Common HDPE Products<\/h3>\n\n\n\n
\n
HDPE Density and Separation<\/h3>\n\n\n\n
HDPE Recycling Process<\/h3>\n\n\n\n
Main HDPE Recycling Challenges<\/h3>\n\n\n\n
\n
\n\n\n\n#3 PVC \u2014 Polyvinyl Chloride<\/h2>\n\n\n\n
Common PVC Products<\/h3>\n\n\n\n
\n
Why PVC Recycling Is Different<\/h3>\n\n\n\n
\n
PVC Density<\/h3>\n\n\n\n
PVC Recycling Process<\/h3>\n\n\n\n
Main PVC Recycling Challenges<\/h3>\n\n\n\n
\n\n\n\n#4 LDPE \u2014 Low-Density Polyethylene<\/h2>\n\n\n\n
Common LDPE Products<\/h3>\n\n\n\n
\n
LDPE Density<\/h3>\n\n\n\n
Why Film Recycling Is Challenging<\/h3>\n\n\n\n
\n
LDPE Film Recycling Process<\/h3>\n\n\n\n
\n\n\n\n#5 PP \u2014 Polypropylene<\/h2>\n\n\n\n
Common PP Products<\/h3>\n\n\n\n
\n
PP Density<\/h3>\n\n\n\n
Can PP and PE Be Separated With Water?<\/h3>\n\n\n\n
PP Recycling Process<\/h3>\n\n\n\n
\n\n\n\n#6 PS \u2014 Polystyrene<\/h2>\n\n\n\n
\n
Common PS Products<\/h3>\n\n\n\n
\n
PS Density<\/h3>\n\n\n\n
Why EPS Recycling Is Different<\/h3>\n\n\n\n
Main PS Recycling Challenges<\/h3>\n\n\n\n
\n
\n\n\n\n#7 OTHER \u2014 ABS, PC, PA, PMMA, PLA and Other Plastics<\/h2>\n\n\n\n
Examples of Code 7 Plastics<\/h3>\n\n\n\n
\n
Can Code 7 Plastic Be Recycled?<\/h3>\n\n\n\n
\n\n\n\nHow Are Different Plastics Identified in a Recycling Plant?<\/h1>\n\n\n\n
1. Resin Identification Codes<\/h2>\n\n\n\n
2. Visual and Manual Sorting<\/h2>\n\n\n\n
\n
3. Density and Sink-Float Separation<\/h2>\n\n\n\n
\n
4. NIR Optical Sorting<\/h2>\n\n\n\n
\n
5. FTIR Analysis<\/h2>\n\n\n\n
\n
6. Electrostatic Separation<\/h2>\n\n\n\n
\n
\n\n\n\nWhy Correct Plastic Separation Matters<\/h1>\n\n\n\n
\n
\n\n\n\nTypical Recycling Process by Plastic Type<\/h1>\n\n\n\n
\u0627\u0644\u0628\u0644\u0627\u0633\u062a\u064a\u0643<\/td> Typical Recycling Route<\/td><\/tr> \u0632\u062c\u0627\u062c\u0627\u062a \u0627\u0644\u0628\u0648\u0644\u064a \u0625\u064a\u062b\u064a\u0644\u064a\u0646 \u062a\u064a\u0631\u064a\u0641\u062b\u0627\u0644\u0627\u062a<\/td> Sorting \u2192 label removal \u2192 crushing \u2192 density separation \u2192 hot washing \u2192 drying<\/td><\/tr> HDPE bottles<\/td> Sorting \u2192 crushing \u2192 washing \u2192 density separation \u2192 drying \u2192 pelletizing<\/td><\/tr> HDPE drums\/crates<\/td> Shredding \u2192 crushing \u2192 washing \u2192 drying \u2192 pelletizing<\/td><\/tr> PVC pipes\/profiles<\/td> Crushing \u2192 metal removal \u2192 grinding\/pulverizing \u2192 reprocessing<\/td><\/tr> LDPE film<\/td> Shredding \u2192 washing \u2192 dewatering \u2192 squeezing\/densifying \u2192 pelletizing<\/td><\/tr> PP rigid plastic<\/td> Crushing \u2192 washing \u2192 separation \u2192 drying \u2192 pelletizing<\/td><\/tr> \u0623\u0643\u064a\u0627\u0633 \u0645\u0646\u0633\u0648\u062c\u0629 PP<\/td> Shredding \u2192 washing \u2192 squeezing\/densifying \u2192 pelletizing<\/td><\/tr> EPS<\/td> Crushing \u2192 densifying\/compacting \u2192 pelletizing<\/td><\/tr> ABS\/PC\/PA\/PMMA<\/td> Identification \u2192 sorting \u2192 shredding\/crushing \u2192 separation as required \u2192 extrusion<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
\n\n\n\nHow to Choose the Right Plastic Recycling Equipment<\/h1>\n\n\n\n
\u0646\u0648\u0639 \u0627\u0644\u0628\u0644\u0627\u0633\u062a\u064a\u0643<\/h2>\n\n\n\n
\n
Material Form<\/h2>\n\n\n\n
\n
\n
\u062a\u0644\u0648\u062b<\/h2>\n\n\n\n
\n
Required Final Product<\/h2>\n\n\n\n
\n
\u0633\u0639\u0629<\/h2>\n\n\n\n
\n
Utilities and Site Conditions<\/h2>\n\n\n\n
\n
\n\n\n\nFrequently Asked Questions About Plastic Recycling Codes<\/h1>\n\n\n\n
What do the numbers 1 through 7 on plastic mean?<\/h2>\n\n\n\n
Does a recycling number mean the plastic is recyclable?<\/h2>\n\n\n\n
Which plastic types float in water?<\/h2>\n\n\n\n
Can PP and PE be separated using a normal sink-float tank?<\/h2>\n\n\n\n
Which plastics are easiest to recycle?<\/h2>\n\n\n\n
Is Code 7 plastic recyclable?<\/h2>\n\n\n\n
Why is PVC contamination a concern in PET recycling?<\/h2>\n\n\n\n
What machines are used for plastic recycling?<\/h2>\n\n\n\n
\n
\n\n\n\nFrom Plastic Identification to a Complete Recycling Process<\/h1>\n\n\n\n