Bottle Washing in PET Recycling

A PET recycling and cleaning device that efficiently cleans and recycles PET bottle flakes while conserving water resources. The device has an overflow tank, a conveyor, a cleaning device, and a draining device. The conveyor transports PET flakes into the cleaning tank. The cleaning device cleans the flakes. Water drains from the flakes into the overflow tank. Excess water is pumped back into the cleaning tank to complete the cycle. This prevents flakes from floating during cleaning and reduces water usage compared to traditional methods.

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Cleaning and pre-processing device for waste plastic bottle flakes that improves the efficiency and quality of cleaning compared to water washing. The device has a rotating conveyor system inside a tank. The tank has a feeding pipe and a transport box connected to it. The conveyor has rotating shafts with belts between them. The tank has cleaning disks on the shaft. The conveyor moves the flakes through the cleaning disks. This provides a continuous, mechanical scrubbing action to remove impurities from the flakes. The disks can be configured with different shapes and textures to optimize cleaning.

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A food-grade recycled PET bottle processing equipment that effectively cleans PET bottles to improve the quality of recycled PET flakes. The equipment uses a specialized assembly inside a housing to clean the bottles. It has a feeding port, bottom filter, cleaning nozzles, and a working extension plate. The assembly allows immersing the bottles in cleaning liquid and ultrasonic cleaning inside the housing to thoroughly remove labels and adhesives. This avoids the issues of incomplete label removal during sorting. The bottles are then conveyed out and picked up for further processing.

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PET bottle piece cleaning line that can reduce environmental pollution, change waste into valuable and obtain huge economic benefits. The cleaning line includes a storage bin, a floating material is collected and recycled, a first dehydrator for dehydration, the dehydrated material is conveyed to a label absorbing machine for removing light impurities such as labels, the light impurities are removed, the light impurities are conveyed to a salt tank for cleaning, the cleaned material is conveyed to a second dehydrator for dehydration, the dehydrated material is conveyed to a hot rinsing tank, suspended impurities are collected and recycled after hot rinsing, the bottom material is conveyed to a third dehydrator for dehydration, the dehydrated material is conveyed to a first rinsing tank for cold rinsing and soaking, the soaked material is conveyed to a second rinsing tank for continuous hot rinsing, the hot-washed material is conveyed to a third rinsing tank after being dehydrated by a fourth rinsing tank, the material is conveyed to a fourth rinsing tank after being rinsed, and the fourth rinsing tank is conveyed to a fifth dehydrator for dehydration and collection.

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Cleaning method for reusable PET bottles that uses acetic acid instead of lye to avoid stress cracking and clouding in the bottles. The cleaning solution contains acetic acid, surfactants, and optionally other washing-active substances. The acetic acid concentration is up to 5% and the temperature is below 50°C. This allows more washing cycles without degrading the bottles. Acetic acid can be produced from carbonic acid, which is a waste product from incinerators and power plants.

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A recycling and cleaning device for waste plastic bottles that fully cleans the bottles instead of just flushing them. The device cuts the bottles, then cleans the inside and outside using a rotating brush and wash fluid. The cutter feeds bottles into a cleaning chamber where they're rotated and sprayed. The cleaned bottles are collected at the end while waste water exits via a valve.

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Method to improve the quality of recycled plastics by washing them using a hot alkaline solution with surfactant and medicament to remove impurities, discoloration, odors, and pollution spots. The washing conditions involve a specific concentration of alkali, surfactant, medicament, and time. This hot washing method allows recycled plastics to achieve the same quality as virgin plastics.

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Modified PET plastic particle regeneration processing technology to clean and filter modified PET plastic particles for recycling. The processing device has a cylindrical barrel, cleaning unit, and water filtration unit. The cleaning unit has a sector plate, telescoping cylinder, and conical cylinder that rotates and agitates the particles against stationary surfaces. The water filtration unit has a vibrating motor and arc frame to shake and filter the particles. This design provides more effective cleaning of adhered particles compared to just rotating them in water flow.

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High-speed PET bottle washing device for removing foreign substances from PET bottles to improve hygiene and prevent contamination. The device aligns, inverts, and fills the bottles with air to dislodge any particles inside. Multiple bottles are processed simultaneously by gripping them with pads and rotating them upside down. This allows washing a large batch of bottles quickly to reduce the risk of foreign matter being introduced compared to washing individual bottles.

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A fixed-distance ultrasonic bottle washing method and machine that improves efficiency and cleaning by continuously immersing bottles at a fixed distance. The machine has a rotating drum with spray nozzles that clean bottles as they rotate. It also has a fixed-distance ultrasonic chamber with a moving platform to immerse bottles in ultrasonic waves. By synchronizing the rotation and ultrasonic immersion, bottles are cleaned at a fixed distance for consistent results.

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Automated system for washing crushed PET bottles to improve recycling efficiency. The system uses multiple washing stages with ultrasonic cleaning and bubble washing. The stages are: 1) Bubble washing: Crushed bottles are rinsed with a solution containing micro-nano bubbles generated by a bubble generator. 2) Ultrasonic cleaning: The bottles are immersed in a cleaning solution and ultrasonically vibrated to clean. 3) Hot air drying: The washed bottles are blown with hot air to dry. This multi-stage washing process removes contaminants from crushed PET bottles more effectively than conventional methods.

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Recycling PET bottles that can be recycled in the natural environment, are easy to use, and can be recycled in a variety of forms, including PET plastic, plastic fragments with different sizes, PET label paper and PET plastic label pieces. The recycling includes sorting the recovered PET bottles to remove impurities which are not made of PET materials; crushing the sorted PET bottles into PET plastic fragments with different sizes by a wet crusher; removing bottle caps from the PET plastic chips; adding a detergent into the PET plastic chips with the bottle caps removed for cleaning, adding caustic soda flakes, heating for cleaning, and washing the PET plastic chips clean with water; and dehydrating, drying, extruding and granulating the washed PET plastic chips.

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An automated system for efficiently cleaning regenerated PET bottles to prepare them for reuse. The system has a cleaning pool and a lifting platform that moves the bottle into the pool. The lifting platform has vertical guide shafts on the table and a plate with blind holes matching the shafts. A spring compresses the plate to the table. This allows the bottle to be lifted and lowered onto the plate, then raised onto the guide shafts. The plate with the bottle slides into the cleaning pool. The bottle is then lowered into the cleaning liquid. After cleaning, the bottle is lifted back out and lowered onto the plate to drain. The plate can then be removed and the cleaned bottle is ready for reuse.

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A process to recycle polyethylene terephthalate (PET) bottles with improved efficiency and cleaning compared to existing methods. The process involves compressing the bottles into blocks, drying them outdoors, pulverizing and cleaning the blocks, alcoholysing the pulverized particles to extract DMT, crystallizing and purifying the DMT, and extruding it to obtain recycled PET. The key innovations are compressing the bottles before recycling to make a dense block, cleaning the crushed particles instead of whole bottles, and drying outdoors to facilitate cleaning.

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Raw material cleaning equipment for plastic particle processing that can automatically sort, clean, and dry recycled plastic bottles. The equipment has conveyors, a washing tank, a drying chamber, and a sorting mechanism. It uses an electric suction cup and movable arm with camera to sort colored bottles. The washing tank cleans bottles using spray jets. The drying chamber has rotating shelves that lift and fold to move bottles through a filter. This allows simultaneous cleaning and drying without separate steps. The equipment also has a conveyor system to transport the bottles.

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A multi-stage ultrasonic cleaning method for waste plastics like PET bottles and flakes that more effectively removes foreign substances and label adhesives compared to conventional methods. The cleaning process involves sequential steps using ultrasonic vibrations at different frequencies in hot and cold water. This multi-stage cleaning reduces the amount of caustic soda needed for adhesive removal by 30% and improves quality of the final product while reducing washing and rinsing time by 30%. The ultrasonic cleaning steps are: 1) low-frequency ultrasound in hot water with caustic soda, 2) higher frequency ultrasound in hot water with caustic soda, and 3) very high frequency ultrasound in warm water with caustic soda.

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Recycling line and method for cleaning and preparing recycled bottles for reuse that automatically removes stickers and contaminants from both the inside and outside of the bottles. The line has a box cutter, bottle splitter, washer, and turner. The washer has an internal brush to clean the inside and an external peeling gear to remove stickers from the outside. The peeling gear has a sharp tooth tip that contacts the bottle surface to scrape off labels. This allows automated cleaning of both the inside and outside of the bottles without manual intervention.

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Device to sort and clean recyclable materials like glass bottles and plastic bottles more efficiently by automating the flushing process. The device has a rotating guide tube that bottles can be inserted into upside down. A motor rotates the tube while a pump sprays water through holes inside the tube to flush out the bottles. The water falls back into a storage tank, avoiding the need to manually pour out the bottles. This automates the initial cleaning step for recycled bottles before further processing.

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A system and method for recycling and reusing polypropylene (PP) plastic bottles with improved cleaning efficiency and reduced chemical residue. The system uses a base frame, feeding conveyor, and inner/outer cleaning devices. The feeding conveyor guides bottles from intake to cleaning. The inner cleaning device has a clamp that secures the bottle and an internal mechanism that cleans it. The outer cleaning device has a rotating pad that cleans the exterior. The clamp, pad, and conveyor are all detachable for easy replacement and maintenance. This allows simultaneous inner and outer cleaning without leaving residue from the cleaning tools.

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Water washing process for recycling PET bottle flakes to improve cleaning of impurities, oils, and labels from recycled PET flakes to produce better quality recycled polyester filaments. The process involves a three-stage cleaning method. First, the flakes are soaked in ethanol at 45-55°C for 20-30 minutes to dissolve contaminants. Then, the flakes are cleaned in hot cleaning agent (trichloroethylene or acetone) at 70-75°C to further remove impurities. Finally, the flakes are washed with an enzyme cleaning agent and sodium hydroxide solution to neutralize any residual alkali and further clean the flakes.

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A system for recycling plastic beverage bottles that allows them to be reused as primary packaging multiple times without needing thicker walls. The system involves cleaning the bottles in a specialized machine that includes an alkali treatment section. This removes contaminants and smooths the inside surface. After cleaning, the bottles are coated to prevent pore formation and roughening. This allows the bottles to be reused as many times as possible without needing thicker walls for reusability. The coating prevents degradation from the cleaning chemicals. The system also includes a drying step between cleaning and coating.

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A whole bottle washing machine for producing green and environmentally friendly PET bottle flakes with improved cleaning efficiency. The machine has a vibrating tank, rotating cleaning discs, and an auxiliary brush assembly. It also has a gas blowing system that generates bubbles in the cleaning liquid to enhance mixing and contact between the flakes and cleaning solution.

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A water washing process for recycled PET plastic bottle flakes to improve efficiency and quality of recycled polyester fiber production. The process uses a cleaning and drying machine with a conveyor, washing tanks, filters, and steering mechanism. The flakes are conveyed through the machine, cleaned in tanks, filtered, and then dried. The conveyor allows continuous feeding and washing. The steering mechanism diverts flakes for complete cleaning. Filters recirculate cleaning fluid. This comprehensive washing, filtering, and drying removes impurities from the recycled flakes to produce higher quality recycled polyester fiber.

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Bottle washing machine with pre-washing device to improve cleaning efficiency and reduce resource waste in bottle washing, especially for recycling used bottles. The machine has a pre-washing section at the start of the conveyance. Bottles are cleaned in this section before going through the main washing and rinsing sections. The pre-washing removes impurities like crystals that may not be fully removed in the main washing. This reduces the need for multiple wash cycles and improves efficiency.

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A whole bottle cleaning device for PET bottle manufacturing that overcomes the issue of efficiently cleaning PET bottles before recycling to improve recycling yield. The device uses a rotating mechanism to agitate and squeeze the bottles in a cleaning tank. A feeding mechanism lifts the bottles into the tank, and a circulation mechanism recirculates the cleaning liquid. This allows thorough cleaning of the bottles without them floating in the liquid. After cleaning, the bottles are conveyed out.

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A multi-stage cleaning method to effectively remove dirt and sterilize recycled high-quality plastic bottle flakes. The method involves pre-cleaning the flakes with hot water, followed by ultrasonic cleaning with a cleaning solution. Then, the flakes are rinsed and dried, and finally sterilized with UV light. The multi-stage treatment removes contaminants, cleans thoroughly, and enables reusing the cleaning solution.

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A system for cleaning PET plastic bottles for recycling that effectively cleans both the inside and outside of the bottles. The system uses a circular tank with a driving mechanism, support column, and first water gun to clean the outside of the bottles. The upper end of the tank has a ring cover with a cleaning mechanism inside. The cleaning mechanism has a shaking mechanism, telescopic column, spring top plate, limit rod, rotating branch chain, and angle adjustment branch chain. This allows the upper end of the bottle to be restricted while the first water gun cleans the inside. The shaking mechanism limits and shakes the upper end to prevent bouncing. The rotating branch chain rotates the bottle for full cleaning. The angle adjustment branch chain adjusts the limit rod to move the upper end position. This ensures effective cleaning of both the inside and outside of the bottles.

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Circulating hot washing device for plastic bottles that improves cleaning effectiveness and reduces water consumption compared to conventional methods. The device uses a conveyor with arc-shaped clips that grip and fix the bottles during washing. High-pressure water cleaning is used instead of spraying. After washing, the bottles go through a drying device. The conveyor rotates synchronously with two belts to provide a larger washing area. The washing and drying devices are connected in sequence. The cleaning liquid is recycled through a filter to conserve water.

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Environmentally friendly system for recycling and reusing PET plastic bottles that improves efficiency and reduces waste compared to traditional methods. The system has a frame, cover, tank, lifting mechanism, hydraulic cylinders, and bottom cover. The bottom cover has a drain groove and plug. The lifting mechanism lowers a frame into the tank to hold the bottles. The bottom cover seals the tank. The system pushes the cover to prevent spills. This allows immersing, cleaning, and draining the bottles without spills.

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Green and environmentally friendly continuous water washing system for cleaning PET bottle flakes. The system has two-stage washing with recycling of cleaning water. The first stage involves multiple chambers with moving wipers to clean the flakes. The second stage has conveyors and spray nozzles to further wash the flakes. The washing water is recovered and reused between stages. This improves cleaning compared to single stage washing.

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Recycling and cleaning waste plastic beverage bottles. The recycling involves removing labels from plastic bottles, primarily crushing, boiling with boiling water to remove dirt and partial bacteria on the surfaces of the plastic bottles, further crushing into powder, uniformly mixing with a cleaning agent, ball-milling by adopting a ball milling method, adding water for ultrasonic cleaning, this operation can make plastic powder and cleaner intensive mixing even, it is more thorough to wash, sodium hydroxide can dissolve the inorganic matter class dirt that is not got rid of by boiling water on the plastics in the cleaner, dodecyl dimethyl sulfopropyl betaine and polyacrylamide can get rid of organic matter class dirt, especially greasy dirt, the dirty absorption that the active carbon can get rid of, avoid dirty attached to plastic powder, copper hydroxide can disinfect plastic powder, change over into the carbon disulfide solution of sulphur after handling with the cleaner and thoroughly disinfect, shine the drying with the ultraviolet lamp at last, make granular plastic.

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Three-stage hot washing device for thoroughly cleaning plastic particles to improve recycling quality. The device has three washing tanks connected in sequence. The first tank uses a cleaning solution with alkaline detergent. The second tank uses the cleaning solution again. The third tank just uses water. This multi-stage washing process with progressively cleaner media helps fully clean the plastic particles for recycling applications.

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Cleaning device for recycling plastic bottles with high efficiency and automation. The device uses ultrasonic cleaning, vibration, air drying, and recycling of cleaning fluid to effectively clean plastic fragments. It has a box body with a feed port, cleaning tank, second filter screen, vibrating motor, hot air blower, ultraviolet lamp, water receiving tank, and delivery pump. The ultrasonic generator removes dust, telescopic rod pushes fragments, vibration moves fragments, hot air dries, ultraviolet sterilizes, and delivery pump recycles fluid. Hoses clean tank inlet/outlet.

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Cleaning recycled PET fragments for reuse in a way that reduces environmental impact and improves efficiency compared to conventional methods. The cleaning agent is a mixture of alkyl sugars, sodium hydroxide, isopropanol, anionic surfactants, alkaline builders, and corrosion inhibitors. The cleaning process involves soaking the PET fragments in the solution at 40-50°C for 20-30 minutes, followed by rinsing and drying.

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A high-efficiency, low-foaming bottle washing agent for cleaning recycled beverage bottles. The agent is formulated to effectively remove labels and residue from bottles without causing corrosion or fogging. It is designed to address issues with existing bottle washing agents like label adhesive, poor cleaning, and high foam. The agent has a pH between 9 and 11 and contains surfactants like alkylbenzene sulfonate, alkyl ether sulfate, and alkyl polyglucoside. It allows complete label removal, leaves bottles shiny, and reduces foam compared to conventional agents.

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A PET bottle washing device with improved cleaning effectiveness compared to existing devices. The device has a rotating column with a top turntable holding the water tank, pump, and heater. Bottle chains with conveyor belts loop around the column. A cleaning head hangs below the turntable. The conveyor belts move bottles onto the head for cleaning. The head has a cylinder with a bottom plate and liquid hose. A solenoid valve connects the hose to the water tank. The cylinder telescopes to extend into bottles. Cleaning solution is forced into the bottles through the valve and cylinder. The device's design allows thorough cleaning of both the inside and outside of PET bottles.

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Circulating water high friction cleaning machine for recycling PET bottles that provides high efficiency, automation, and environmental friendliness. The machine has a cleaning section, rinsing section, circulation section, acid-base neutralization and flocculation section, and treatment section. The sections are connected by valves and pumps. The machine cleans, rinses, and recirculates water to clean the PET flakes without hot boiling or wasteful washing. It uses a motor, pump, valves, and PLC to automate the cleaning process. The circulated water is treated for pH neutralization and flocculation before reuse.

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A whole bottle cleaning machine for plastic bottles before recycling to avoid contamination during decomposition. The machine has a bottom plate with a cleaning housing mounted on it. The housing has an inlet for cleaning liquid and a drain. Bottles are fed in and compressed to remove air. A rotating drive moves a cleaning device and deflector inside the housing in opposite directions to thoroughly clean the bottles. The deflector's angles divert the cleaning fluid.

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Cleaning method for waste plastics to remove stains, oils, and adhesives from recyclable plastics before processing them further. The cleaning involves a four-stage treatment process. The stages are: (1) pre-cleaning in a first tank to soften the plastics and remove initial stains, (2) secondary cleaning in a second tank to further clean the plastics, (3) tertiary cleaning in a third tank to rinse the plastics, and (4) quaternary cleaning in a fourth tank to finalize the cleaning. This multi-stage cleaning removes more stubborn contaminants and allows reusing the cleaning fluid between stages to save resources. After cleaning, the plastics are spun dried and frozen to preserve them for later processing.

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A four-stage cleaning process for recycling waste plastics that removes stains, oils, and labels from waste plastics before recycling. The process involves: (1) pre-cleaning the crushed waste plastics in a first tank with a treatment fluid, (2) stirring the plastics in the first tank to fully clean them, (3) rinsing the plastics in a third tank, and (4) drying and freezing the cleaned plastics. The treatment fluid contains starch, activated carbon, stearic acid, palm oil, ethanol, microcrystalline cellulose, and glycine in specific ratios. The four-stage process allows reusing the cleaning fluid and improving cleaning effectiveness compared to single-step methods.

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A more efficient process for recycling PET (polyethylene terephthalate) bottles that involves a sequence of steps to clean, neutralize, and depolymerize the recycled material. The process aims to extract the valuable PET monomers from the waste bottles and convert them into new PET resin. The steps include: 1) Sorting and washing the PET bottles to remove contaminants, 2) Neutralization using acids to break down any impurities, 3) Depolymerization using heat and catalysts to convert the PET back into terephthalic acid and ethylene glycol monomers, 4) Purification and separation of the monomers for reuse in making new PET resin. The process aims to reduce waste and resource consumption compared to virgin PET production while also addressing environmental issues with PET bottle

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Cleaning agent for efficiently removing contaminants like oil, glue, ink, sugar, protein, pound marks, yellow spots, and stains from recycled PET bottle pieces during cleaning and recovery. The cleaning agent contains an alkaline builder like sodium carbonate, a surfactant, a pH adjuster, and an abrasive like zeolite or ultrafine calcium carbonate. The alkaline builder adjusts pH, buffers alkalinity, and forms colloids to suspend dirt. The surfactant cleanses. The abrasive increases friction to enhance cleaning. The agent is safe, harmless, environmentally friendly, and improves quality of recycled PET flakes.

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Cleaning agent for effectively removing contaminants from waste plastic bottles before recycling. The cleaning agent contains sodium hydroxide, dodecyl dimethyl sulfopropyl betaine, fatty acid sodium salt, zinc dialkyldithiophosphate, polyacrylamide, copper hydroxide, sweet potato starch, sodium hydrogencarbonate, zeolite molecular sieve, ethanol, and deionized water. The specific ratios of the components are provided in the invention disclosure.

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A pre-cleaning device for plastic bottles that automates and improves efficiency of bottle cleaning compared to manual methods. The device uses a washing tank with stirrer, pump, and nozzles to spray cleaning solution onto bottles as they move on a conveyor. The solution is circulated and collected below the bottles. This provides consistent, thorough pre-cleaning without manual labor.

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PET bottle chip cleaning device that improves cleaning efficiency and reduces yellowing of recycled PET bottles by using a rotating cleaning cylinder with an internal stirrer. The cylinder body has an external threaded portion driven by a rotating motor to rotate the cylinder. An internal stirrer motor and shaft agitates the chips from the inside. The rotating cylinder and internal stirrer cooperate to thoroughly clean the chips without prolonged immersion. This prevents yellowing and ensures clarity.

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Water wash system of the recovery pet bottle piece for producing polyester filament The water wash system includes a vacuum tank, a recycling cleanout fluid supply tank, and a washable cold wash liquid filter. The wash system includes a high-efficiency washing of pet bottle piece, a waste plastic bottle reclaiming device, and a circulating device.

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Automatic cleaning device for plastic bottle flakes to improve efficiency and effectiveness of cleaning recycled plastic bottle fragments. The device has a horizontal drum filled with bottle flakes that rotates in a tank filled with cleaning solution. The drum has small holes to prevent flakes from escaping. The drum and tank can be raised and lowered to immerse the flakes in the cleaning solution. This soaks the flakes to loosen dirt and then stirring the flakes against each other removes the dirt. The small holes prevent flakes from flinging out during rotation.

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Ultrasonic cleaning method specifically for polyethylene terephthalate (PET) plastics that provides complete removal of residue and contaminants from PET flakes during the cleaning process. This improves the quality of subsequent manufacturing processes by preventing contamination. The cleaning method involves using ultrasonic agitation and a cleaning solution optimized for PET plastics in an ultrasonic cleaner. The ultrasonic agitation helps to dislodge and suspend the contaminants in the cleaning solution for easy rinsing and removal.

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A cleaning method and system for recycling bottles that improves cleaning efficiency, reduces environmental pollution, and saves costs compared to traditional methods. The cleaning method involves pre-flushing, inner wall disinfection, inner wall bacterial sterilization, and final sterilization rinses. The system has devices for pre-flushing, initial flushing, liquid rinsing, and sterile water rinsing. It recovers liquids between steps to conserve resources. The method uses neutral or weakly alkaline/acidic disinfectants instead of harsh detergents.

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Recycled PET bottle flakes washing process for producing high quality polyester filament from recycled PET bottles. The washing process thoroughly cleans the flakes to remove impurities like stains, labels, adhesive and oil. It uses multiple stages of rinsing and circulation to extract and float out the impurities. The cleaning liquid is circulated and filtered to avoid waste and pollution. The process improves the cleaning effectiveness through techniques like increased stirring, reverse flow, and water somersaulting. This results in cleaner flakes with better filament quality and stability.

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