A PET recycling machine is rarely a single machine. When buyers ask for one, they usually need a PET washing line: a sequence of debaling, label removal, crushing, hot washing, friction washing, separation, rinsing, and drying that turns used bottles into clean rPET flake. Quotes go wrong when the scope does not match the feedstock — a crusher alone cannot clean dirty bottles, and a full washing line is wasted on pre-washed flake.
This guide gives you the decision framework: how the standard line works, which configuration fits your feedstock, what decides flake quality and price, how to size capacity, and what to send suppliers so quotes are comparable. For the size-reduction step inside the line, see the shredder vs crusher guide; for the general selection logic across materials, see the 플라스틱 재활용 기계 선택 가이드.
PET 재활용 기계 vs PET 세척 라인: 핵심 요약
| Term | What it usually means | When it is enough |
|---|---|---|
| Single PET recycling machine | One unit, such as a crusher, label remover, or dryer | Clean, pre-sorted feed, and only one process step is missing |
| PET washing line | Full sequence from bale to dry flake | Post-consumer bottles with labels, caps, and dirt |
| 페트병 재활용 시스템 | Washing line configured for whole bottles | Baled or loose bottles as the main feedstock |
| Pelletizing extension | Washing line plus extruder and pelletizer | The buyer wants rPET pellets, not flake |
Define the output first — flake or pellets — then describe the feedstock. The equipment list follows from those two answers.
세척 라인이 병을 플레이크로 바꾸는 과정
Bottles move through the line in one direction, and each stage removes one class of contamination. Skipping a stage does not save money if the contamination it targets comes back as a price deduction on the flake.
- Debaling and sorting. Bales are opened and non-PET items — PVC bottles, metal, trash — are removed. PVC is the critical reject: it behaves like PET in the wash but ruins the flake.
- Label removal. A dry label remover strips most wrap and paper labels before wet processing, so the washers deal with glue residue instead of whole labels.
- Crushing. A 플라스틱 분쇄기 cuts bottles to flake, commonly in the 10–14 mm range depending on screen and knife setup. Uniform flake washes and dries more evenly than mixed sizes.
- Hot washing. Flake is washed with heated water and detergent in a hot washer. Heat plus chemistry loosens glue, oil films, and sugar residues that cold water leaves behind.
- Friction washing. A 마찰 세척기 scrubs flake at high rotor speed — the mechanical complement to the chemical clean of the hot wash.
- Sink-float separation. In a 침강-부유 분리조, PET sinks while caps and labels made of polyolefins float. This single density step removes most of the cap and label fraction.
- Rinsing. Clean-water rinses remove detergent and suspended fines before drying.
- Dewatering and drying. Mechanical dewatering followed by thermal drying brings moisture down to the level the next process accepts. Dryer choice matters most when flake feeds an extruder directly.
원료에 맞는 라인 선택하기
The feedstock decides the configuration more than any other factor. Four common starting points:
| Your feedstock | Likely configuration | 이유 |
|---|---|---|
| Baled post-consumer bottles | Full line: debaler to dryer | Labels, caps, PVC risk, and dirt are all present |
| Loose or pre-sorted bottles | Full wash without debaler | Bale handling is unnecessary; the washing load is the same |
| Purchased dirty PET flake | Wash, separation, and dry; no crusher | Size reduction is already done; pay only for cleaning |
| Pre-washed flake | Dry and sort, or pelletize directly | Washing again adds cost without improving quality |
If the feedstock varies by season or supplier, size the washing stages for the dirtiest expected case, not the average sample.
플레이크 품질: 가격을 결정하는 진짜 요인
Flake buyers discount on four measurable properties. Each maps to a line stage — which is why the configuration and the price are the same decision.
- PVC content. Even small PVC fractions discolor rPET. Remove PVC at sorting; no washing stage fixes it afterwards. Confirm how the supplier’s line handles PVC detection and rejection.
- Labels and glue residue. Hot washing plus friction washing handles most adhesive; a label remover upstream reduces the load. Ask what glue residue level the line is rated for, on your label types.
- Moisture. Wet flake loses value and complicates extrusion. Specify the dryer’s outlet moisture on your material, not on a clean test sample.
- Color mix and fines. Clear flake prices above mixed color; fines are yield loss. Sorting effort and screen choices set both.
Get the buyer’s specification sheet before finalizing the line. A line that beats the spec wastes capital; a line that misses it discounts every tonne.
과도한 투자 없이 라인 규모 정하기
Nameplate capacity is quoted under specific conditions — usually clean bottles at a defined moisture and contamination level. Your throughput will differ. When comparing quotes, ask each supplier to state the reference conditions behind the kg/h figure: feed form, contamination, screen size, and operating hours per day.
- Match capacity to real supply. A line rated at 1,000 kg/h needs roughly that much sorted feedstock every operating hour. Idle capacity still costs floor space, power connection, and labor.
- Check utilities, not just the machine price. Washing lines consume water, heat, and power. Ask for water consumption per tonne, installed kW, and expected kWh per tonne at your throughput — installed power and energy cost are different numbers.
- Leave room for the dirtiest week. Size pumps, screens, and dryers for peak contamination, not the trial sample.
- Plan the full layout. Conveyors, water treatment, and flake storage often need as much floor as the machines. Confirm the total footprint including utilities before committing to a building around the line.
rPET 톤당 운영 비용 비교
Two lines with similar price tags can have very different running costs. Build the comparison per tonne of saleable flake:
- Labor for sorting, feeding, and supervision across shifts
- Water, detergent, and heat for washing
- Blade sharpening and replacement on the crusher
- Screen and wear-part replacement in washers and dryers
- Electrical energy in kWh per tonne, at your tariff
- Yield loss: fines, rejected PVC, and moisture-corrected output weight
A cheaper line that loses two extra points of yield can cost more per tonne than a better-equipped one. Run the numbers on saleable output, not input.
PET 재활용 라인 RFQ 체크리스트
- PET feedstock form: baled bottles, loose bottles, dirty flake, or pre-washed flake
- Polymer mix and known PVC, metal, or trash fraction
- Labels: wrap, paper, or pressure-sensitive; glue type if known
- Required throughput in kg/h and operating hours per day
- Target output: flake or pellets; buyer’s specification if available
- Moisture limit for the next process: storage, sale, or extrusion
- Available utilities: power supply, water source, drainage, floor space
- Water treatment and discharge requirements at the site
- Installation, commissioning, and operator training scope
- Wear-part list with prices and expected service intervals
자주 묻는 질문
PET 플레이크와 rPET 펠릿의 차이는 무엇인가요?
Flake is the washed, dried output of the washing line. Pellets are made by melting flake in an extruder and pelletizing it. Flake suits buyers with their own extrusion; pellets suit buyers who feed production directly. The washing line is the same either way — pelletizing is an added extrusion stage.
PET 세척 라인은 원료에 섞인 HDPE 병을 처리할 수 있나요?
The sink-float stage separates them by density: PET sinks, HDPE floats. But separation is not sorting — a high HDPE fraction still costs capacity and yield. Remove as much non-PET as possible before the crusher.
열수 세척기가 있는데 라벨 제거기가 필요할까요?
They do different jobs. The label remover takes off whole labels dry, before water is involved. The hot washer then deals with glue residue and films. Without the remover, labels consume washer capacity and detergent.
PET 세척 라인은 물을 얼마나 사용하나요?
It depends on capacity, dirt load, and whether water is recirculated. Ask suppliers for liters per tonne of flake with and without water treatment, and check local discharge rules — water treatment is often a separate budget item.
건조된 PET 플레이크의 수분율은 어느 정도가 적당한가요?
It depends on the next step. Flake sold for storage tolerates more moisture than flake fed directly to an extruder, where residual moisture causes hydrolysis and quality loss. Set the target from the extruder or buyer specification, then verify the dryer on your material.
분쇄기부터 시작해서 나중에 세척 단계를 추가할 수 있나요?
Yes, if the layout allows it. Many plants start with crushing and add washing as feedstock or buyer requirements tighten. Confirm conveyor interfaces, water and power provisions, and floor space for the future stages before placing the first order — retrofitting around a cramped layout costs more than planning ahead.
재활용 시스템을 확인하고 견적 요청하기
PET 병 재활용 시스템 페이지에서 전체 사양과 라인 구성을 확인하고, 재료 시험 가동 또는 견적을 요청하실 수 있습니다.
