Contamination Removal from Packages for Purity

A method for cleaning and preventing contamination inside a chamber used for semiconductor processing. The method involves cyclically raising and lowering the pressure inside the chamber while heating and cooling it. This removes and dislodges contaminants from the chamber walls and components. The contaminant-laden gas is then purged. The cycling is done between pressures above and below atmospheric pressure. This prevents internal contaminants from being deposited back on the substrates during processing.

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Cleaning agent composition for semiconductor substrate cleaning that provides improved cleaning performance and reduces contamination compared to conventional cleaning agents. The composition contains tetrabutylammonium fluoride trihydrate, 3-butoxy-N,N-dimethylpropanamide, and pentaethylene glycol monododecyl ether. The composition is used in semiconductor processing to clean semiconductor substrates, particularly after metallization steps. The composition provides improved cleaning of metal residues and reduces contamination compared to conventional cleaning agents.

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Continuous and semi-continuous manufacturing method for electrodes with improved thickness uniformity and reduced deflection. The method involves dispensing electrode slurry onto a current collector using a rotating drum with arc-shaped pallets. The current collector material is fed into the drum and a discrete portion is tucked between the pallets. The slurry is dispensed onto this tucked section and then the pallets move to re-form the gap, leaving discrete slurry patches. This allows consistent, uniform slurry application without the weight variations that cause deflection. The drum can also have features like concave rollers, pinion gears, and vacuum to further control dispensing and prevent material shifting.

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Vibrating body and substrate processing apparatus for improving contaminant removal during cleaning. The vibrating body has an inclined region on the contact surface with the cleaning liquid that faces the substrate. The angle between the inclined region and the end of the vibrating body facing the substrate is 20-87 degrees. This inclined region facilitates parallel movement of contaminants on the substrate surface during cleaning by applying a force perpendicular to the surface.

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A process to improve reliability of hybrid bonded microelectronic devices by removing nanoparticles from the bonding surfaces after activation. The process involves cleaning the surfaces after activating them for hybrid bonding to remove extraneous particles that can cause leakage between closely spaced conductive features. The cleaning can physically remove and dissolve nanoparticles without harming the bonding surfaces. This prevents undesirable current and signal leakage between fine conductive lines and traces, especially at higher voltages with sub-micron spacing. The cleaning step is done between activation and bonding.

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Remediation of PCB-contaminated concrete using a nonmetal treatment system (NMTS) paste and zero-valent magnesium (ZVMg) to extract and degrade PCBs from concrete surfaces. The NMTS paste is applied to the concrete, penetrates the pores, and desorbs PCBs into the paste. The extracted PCBs are then degraded by the ZVMg. This provides a cost-effective alternative to physical removal or encapsulation of PCB-contaminated concrete.

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Recycling printed plastic containers without contaminating the recycled plastic with colorants or other components of the ink. The method involves using water-based inks on the containers that can be removed as solid particles when exposed to a hot caustic solution. The inks contain polymers like self-crosslinking acrylics that don't dissolve in the wash. This allows separating the recycled plastic from the ink particles, preventing color contamination during recycling.

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Substrate treatment method and apparatus for preventing contamination and improving washing efficiency in semiconductor processing. The method involves using a dummy substrate to clean the drying chamber between runs. After developing, the dummy substrate is loaded wet into the drying chamber and supercritical fluid is supplied. This washes the chamber. The dummy is then baked and reused. This reduces contamination compared to using residue from the drying chamber. It also automates chamber cleaning by integrating it into the process flow.

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A composition for removing metal residues from semiconductor substrates during manufacturing. The composition contains a specific resin with repeating units having a hydroxy group and a group with a pKa of 10.0 or less. The resin suppresses tungsten dissolution compared to regular polymers. It also provides better removal of metal residues and leaves fewer residues after rinsing. The composition is used to treat semiconductor substrates with metal-containing residues to clean them before further processing steps.

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Automated system for removing particles from semiconductor pellicles using a nozzle, robot arm, vacuum pump, and distance sensor. The system locates a particle on the pellicle membrane, lowers the nozzle to a threshold distance, dispenses a droplet to cover the particle, horizontally drags the droplet to an edge, and suctions it off. This removes particles without damaging the pellicle.

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Pre-wet module for cleaning and degassing substrates prior to plating that improves efficiency by allowing better access to patterned surfaces and preventing recontamination. The module has a rotating stage to hold the substrate with the processing side up. It has a chamber with a lid and tubular skirt around the lid edge. The chamber can be raised and lowered. Cleaning liquid is supplied through the lid nozzle when the chamber is raised. Degassing liquid is supplied when the chamber is lowered. This allows full access to the patterned surface for cleaning, then degassing without obstruction.

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Multilayer film for packaging materials that allows easy removal of adhering contents like food residue while maintaining good heat sealability. The film has a sealing layer with a thermoplastic resin and a surfactant. Embossing the sealing layer surface to increase its specific area enhances content release. The film can be used in containers like paper cups to facilitate cleaning.

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Reducing the risk of ink particles from printed packaging transferring into food products during manufacturing. The method involves curing the inner layer of the packaging material to bind ink particles that migrate from the outer printed layer. This prevents the ink particles from being released into the food product. The packaging material is formed into packages and filled with the product without a separate ink migration preventing layer. This avoids compromising efficiency and versatility compared to adding a separate layer.

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Laminate for packaging materials, containers, and articles that can improve hygiene and quality even when the recycled resin content is high. The laminate uses chemically recycled resin instead of material recycled resin. Chemically recycled resin is made by converting discarded resin into a low molecular weight form and then polymerizing it, rather than cleaning and melting used packaging materials. This reduces impurities and thermal degradation compared to material recycling. The laminate has at least 10% vol or mass of chemically recycled resin.

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Filler assembly for sterile filling of flexible pouches with flowable materials like food products. The filler has zones for preheating, sterilization, flushing, and filling. The pouch moves through these zones sequentially. The preheat zone has a preheat nozzle and vacuum to suction the pouch before sterilization. The sterilization zone has a sterilization nozzle and vacuum after sterilization. The flushing zone has a flushing nozzle and vacuum after flushing. This sequence helps prevent contamination by removing fluids from the pouch between steps. The filler also has a mechanism to move the pouch through the zones. The mechanism has two regions: helical screws to guide the pouch entry, and linear slides to move it through the zones. The nozzle assemblies have sealing rims with slots to allow fluid flow when engaged with

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Reducing outgassing of volatile organic compounds from pellicle packaging to minimize contamination of pellicles used in semiconductor lithography. The pellicle packaging has a total outgassing of 90 ppm or less when heated at 100°C for 30 minutes. The packaging has a sealant layer with thickness 40 μm or less, optionally an adhesive layer, and can contain an ethylene-vinyl alcohol copolymer in the sealant. This reduces outgassing compared to typical packaging materials. The packaging can also be used to enclose pellicle receptors for lithography tools. The pellicle itself may have a styrene-butadiene-based adhesive for original plates.

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Packer machine for making pouches containing snus or other loose products like tea or coffee. The machine has features to improve productivity and quality while collecting loose powder from the pouches. It uses actuators with adjustable pneumatic springs to precisely control the sealing pressure. This prevents pouches from inflating with air during filling. Between the longitudinal and transverse sealers, a suction device removes loose powder blown out by the compressed air feeding the pouches. This prevents dirtying of the sealing units and ensures clean pouches.

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Packaging machine that prevents defective sealing by removing foreign matter from the sealed portion. The machine has a feature to thoroughly clean the overlapped edges of the packaging material before sealing. It does this by inserting a brushing device between the bag maker and sealer that can be pushed into the overlapped edges. The brushing device has a vent hole and a suction device to draw the edges through the hole and clean them. This prevents foreign matter like product scraps from being sealed in the package.

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Product packaging assembly that prevents contamination of packaged products from ambient environments. The assembly has a filter sandwiched between a support and a surface film, with sealed perimeters. This assembly is placed over the package opening. During heating, gases vent out through the assembly while the filter blocks ambient particles from entering. This prevents contamination during processing and handling in contaminated environments.

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Packaging material with antimicrobial and low adhesion properties to reduce contamination and disease transmission through contact with the packaging surface. The packaging has a coating that combines anti-microbial behavior to deactivate contaminating microbes with low adhesion properties to prevent buildup of contamination. The coating is applied over a substrate and can be printed onto the packaging. The low adhesion properties help prevent contamination from sticking to the surface, while the anti-microbial properties deactivate any remaining contamination.

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Recycling system for transparent PET bottles that allows only pure PET resin particles to be extracted for recycling. The system is installed in common facility recycling points. It involves washing, crushing, screening, drying, and collection steps. Bottles with labels removed go through washing, then crushing to shreds. Screening removes impurities. Drying removes moisture. The pure PET particles can then be collected for recycling. This prevents contamination from adhesives and labels, making the recycled PET more valuable.

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Using voracious insect larvae from the Diptera family to biologically clean contaminated packaging materials from the food industry. The larvae consume organic particles caught on the packaging, leaving behind cleaned packaging that can be recycled. This provides an economically advantageous and sustainable alternative to chemical or physical cleaning methods. The larvae cannot eat the packaging itself, so it remains recyclable. By using the larvae to clean the packaging, it enables further recycling of waste packaging materials while converting the organic contaminants into larval biomass that can be used as feed or other purposes.

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Laminated packaging material that has a peelable layer to enable easy opening in clean environments without contaminating the contents. The laminate has two layers, one that peels off at 180 degrees angle and low peel strength, and another main layer with high peel strength. The peelable layer contains a biomass-derived resin and has a density of 0.909 g/cm. The main layer has polyolefin content of 82% or more. This configuration allows the peelable layer to be easily removed to expose a clean surface on the main layer for use in clean environments. The biomass resin in the peelable layer suppresses bulging between layers. The low peel strength prevents adhesion of contaminants.

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Automatic analyzer, cool box, and pouch to improve analysis accuracy and prevent contamination in analyzer coolers. The cool box has air circulators with agent retaining portions, like pouches filled with substances that remove components adversely affecting analyte analysis. These pouches are placed in the intake or exhaust ports of the circulators. Air drawn in or blown out by the circulators passes through the pouches, allowing contaminants to be removed by the agents. This prevents analysis inhibitors from circulating in the cooler and contaminating samples.

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A tissue packaging machine with sterilization capability to improve the hygiene of wet wipes. The machine has a sterilizing lamp positioned before the cutting stage. Paper towels roll from the feeder, pass through the lamp for sterilization, then get cut and packaged. This ensures fully sterilized wipes before packaging to prevent contamination and skin irritation. The sterilization step helps improve hygiene by killing bacteria and viruses on the wipes.

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A treatment apparatus for sterilizing packaging material by immersion during production of containers. The apparatus has a tank containing a sterilizing liquid, with an opening to introduce the liquid. A screen inside the tank protects the web from direct flow. The web is fed through the tank, immersing it in the sterilizing liquid. This prevents contamination during reel changes and machine stops that can damage the web. The apparatus can be integrated into container production machines.

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An immersion treatment apparatus for packaging material like sheets used in container production that reduces defects. The apparatus has a tank filled with sterilizing liquid and a pump to quickly fill the tank. A roller inside the tank rotates and draws the sheet into the liquid. This immersion treatment can sterilize and clean the sheet. The quick filling pressure can damage the sheet, but lower pressures would extend fill time. The roller and sheet contact prevent damage. The tank bottom has a screen to prevent debris from entering the roller. This reduces container defects caused by sheet issues generated during sterilization due to high filling pressures.

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Composite paper for packaging applications made from cellulose fibers and mineral particles derived from purified phosphate mining waste. The paper aims to repurpose phosphate washing sludge as a sustainable alternative raw material in packaging. The sludge undergoes chemical treatment to remove toxic metals. The treated sludge particles are mixed with cellulose fibers to make composite paper. The composite paper has improved thermal and fire resistance compared to cellulose-only paper. It can be further coated with thermoplastic materials for enhanced water resistance.

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Filler assembly for sterilely filling pouches with aseptic fill materials like food products. The filler has separate zones for preheating, sterilization, and flushing the pouches. It uses vacuum steps before attaching the fill nozzles to remove air from the pouches. The nozzles have seals that engage the pouch spouts. The assembly has a pouch movement mechanism with opposing screws and channels to move the pouches through the zones. This helps prevent contamination by preventing air ingress during filling. The separate preheat, sterilization, and flush steps further minimize the need for preservatives in the fill material.

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A method to separate and recycle materials from medicine blister packaging in a sustainable way. The method involves treating the blister packaging with a solvent like acetone to induce swelling and delamination of the plastic layers. The solvent is then filtered for recovery and the dried polymers like PVC, PET, and EVA are segregated and collected for recycling. The solvent vapors produced during drying are condensed using a water-based condenser to recover the solvent without releasing it into the environment.

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Machine and method for sterile packaging of products like food or pharmaceuticals using flexible containers. The method involves sterilizing the inner surfaces of the container before sealing it. This prevents contamination when defects occur in the sealing process. Preliminary sterilization is done near the sealing area using a vaporized sterilant. The sterilant condenses on the sealing surfaces. When the sealing occurs, heat vaporizes the sterilant again. This ensures the sealing area is sterile. The machine has dedicated sterilization ducts near the sealing area. The sterilant is delivered continuously as the container advances. It condenses on the sealing surfaces then vaporizes during sealing. This provides complete sterilization even if sealing is imperfect.

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Method for separating multilayer packaging materials like food packaging with aluminum films from plastics like PET, PE, PP, etc. The method involves creating a specialized solvent mixture with specific gravity adjustment to individually separate the aluminum film from the plastics. The solvent mixture is made by combining a first solution of dichloromethane, methanol, nitric acid, methyl fluoride, and surfactant with a second solution of ethyl acetate. The specific gravity of the mixed solvent is then adjusted to a range of 0.98-1.04 by adding an unspecified specific gravity adjusting agent. This solvent mixture allows selective dissolution of the aluminum film without affecting the plastics, enabling separate recycling of the components.

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Packaging machine for making filter bags with infusion products like tea, coffee, etc. that can be operated in clean conditions without complex and costly cleaning systems. The machine has a plurality of processing stations and a cleaning unit. The cleaning unit has multiple generator devices positioned above the machine. These devices release a stream of compressed air that flows down over the processing stations to dislodge and remove any loose particles or foreign bodies. The air flow helps prevent contamination and dust accumulation during the production process. It allows simple and inexpensive cleanliness without needing continuous cleaning or complex systems.

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Reducing the risk of ink particles from printed packaging transferring into food products during processing by curing the inner layer of the packaging material to bind any migrated ink particles, preventing their release into the food. The curing step is performed after the ink print is applied to the outer layer. This avoids needing an additional layer to prevent ink migration through the material. The curing can be done using a separate device in the packaging machine or integrated into the print station.

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A system for handling contaminated food packaging film in a food processing facility to avoid contamination and comply with regulations. The system involves storing the used packaging film in a refrigerated unit at the food processing facility for multiple days to retard pathogenic growth. Then, the film is transported to a treatment facility after the storage period. During transport or at the treatment facility, the film can be deodorized using a composition with anti-fungal/microbial, surfactant, solvent, and chelating agents to further clean and sanitize the film. This allows economical bulk collection of contaminated film in a refrigerated unit instead of daily transport, while preventing contamination hazards.

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Preforms, bottles, and a manufacturing method for plastic bottles that improve sanitation and reduce environmental impact. The preform has an inner layer made of virgin, biomass-derived, or chemically recycled polyester, and an outer layer made of mechanically recycled polyester. The outer layer thickness is 0.10-4.00 times the inner layer thickness. The inner layer covers the upper end of the outer layer. The thickness of the inner layer in the body is 100-110% of the thinnest portion. This configuration allows using recycled polyester in the outer layer while reducing contaminant migration into the product. The inner layer provides a barrier against eluted catalysts and contaminants. The thicker inner layer prevents thinning during blow molding.

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Laminated packaging material for food containers that allows recycling of paperboard from used containers without compromising food safety. The laminate structure has a core layer of recycled paperboard sandwiched between an outside layer with a migration barrier coating and an inside layer. The barrier coating prevents contaminants like mineral oils from migrating into the packaged food. This allows using recycled paperboard in the laminate without concerns of contaminants leaching into the food.

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An integrated washing and drying machine for pesticide packaging bottles that automates cleaning and drying in a compact, closed system. The machine has separate chambers for washing and drying the bottles. It uses a rotating mechanism to agitate the bottles during cleaning and then dry them by circulating air through the chambers. The machine also has features like filter plates, belt conveyors, and valves to efficiently transfer and drain the bottles between chambers.

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Chemically recycling polyester waste to produce colorless polyethylene terephthalate (PET) for use in packaging and textiles. The method involves depolymerizing the waste polyester using glycol to obtain colorless bis hydroxyethyl terephthalate (BHET). This BHET is then separated from impurities like colorants and fillers using centrifugation. The centrifugation parameters are optimized to minimize BHET precipitation while maximizing separation of impurities. The resulting clean BHET can be polymerized to make PET for recycled packaging and textiles.

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Packaging material that can be easily recycled by separating and removing layers to obtain pure base materials. The packaging has layers like primer, print, and base. The primer and print layers contain acidic compounds that can be neutralized to detach from the base material during recycling. This allows separating and recycling the pure base material without contamination from other layers. The print layers contain colorants and dispersants. The primer layer has pigment derivatives and resin dispersants. The base material can be a polymer like polyethylene. The detachment process involves crushing the packaging, neutralizing the primer/print layers, washing, and thermoforming the base material.

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Pharmaceutical packaging materials with improved inertness, extractability, leachability, and lubricity compared to conventional packaging materials. The materials have a thin film coating on the substrate surface. The coating is composed of two layers: a hexamethyldisiloxane (HMDS) layer followed by a silane layer. The HMDS layer provides inertness, barrier properties, and reduces extractables. The silane layer improves lubricity. This two-layer coating on substrates like vials/syringes improves drug inertness, reduces leachables, and provides high lubricity compared to uncoated packaging.

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Sorting mixed plastic packaging waste containing foil into pure foil and other plastic waste using a multi-step size separation process. The method involves sorting the mixed waste into five size fractions, then further separating each fraction to extract the foil pieces. This allows efficient removal of foil before processing the remaining plastic waste, preventing foil contamination in further sorting steps. The different size fractions are sorted separately using adapted processes to achieve high-purity sorted foil.

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Multilayer film for food packaging that reduces migration of impurities from recycled polyethylene. The film has an inner layer of recycled PE containing impurities surrounded by virgin PE outer layers with barrier additives to prevent migration. This allows using lower quality, impurity-containing recycled PE in the core layer while still meeting food safety requirements due to the barrier layers. The barrier additives can be mica, talc, COC, or zeolite.

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Container for back-in boxes like bag-in-boxes used for liquids that prevents odors from transferring to the contents. The container has a packaging bag made of multiple layers of films with an air layer in between. An activated carbon sheet is inserted into the air layer to adsorb odors and prevent them from transferring to the contents. This allows using the container as an inner bag in a bag-in-box for liquids like drinking water without odor contamination.

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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 packaging system for sterile medical, pharmaceutical, or cosmetic products that allows for non-destructive integrity testing and avoids contamination compared to prior packaging methods. The packaging uses a film with layers in sequence from outside to inside: a non-woven layer for sealing, an activatable adhesive layer, and an outer film layer. Before decontamination, the adhesive is inactive. After decontamination, the adhesive is activated to seal the packaging. This prevents contamination between layers and allows non-destructive testing by sealing the apertures. The decontamination gas can enter through the non-woven and apertures, but sealing prevents further gas entry.

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A method to regenerate silicon dioxide from semiconductor packaging waste, which involves extracting the thermosetting resin from the packaging material using an acidic solution, then separating the silicon dioxide. This allows purifying the silicon dioxide for reuse in applications like cement or fiber reinforced plastics, instead of burying or incinerating the packaging waste. The acidic solution dissolves the resin while leaving behind the silicon dioxide, which can then be recovered.

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An automatic analyzer with a cool box that has internal air circulators to maintain proper temperature for samples. The cool box has a sealed receiving space for sample receptacles and air circulators with intake and exhaust ports. The circulators suck air from the receptacle space, pass it through an inhibitor-removing agent in a pouch, and then exhaust the cleaned air back into the receptacle space. This circulates and purifies the air inside the cool box to prevent contamination of samples. The pouch containing an inhibitor-removing agent is set on the circulator exhaust port.

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Systems for manufacturing, packaging, and delivering biopharmaceuticals using vessels and connectors with customized contact surfaces that are compatible with the biopharmaceuticals, precursors, and intermediates. The vessels have inner surfaces with a common surface that contacts the biopharmaceuticals. This common surface is composed of layers like tie, barrier, and pH protective coatings made of materials like silicon oxide and silicon nitride. These coatings aim to reduce adsorption, denaturation, and contamination of the biopharmaceuticals when they come into contact with the vessel walls. The coatings are optimized for specific biopharmaceuticals and provide consistency across the manufacturing process.

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Using larvae of carnivorous insects from the Diptera series to clean contaminated food packaging materials. The method involves cutting the packaging into smaller parts to make it accessible to the larvae. The larvae consume the organic contaminants on the packaging as their only food source. This allows further recycling of the packaging and converts the contaminants into larval biomass that can be used as animal feed or other purposes.

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