Ultrasonic Welding for Strong Package Bonds

Sealing device for packaging pourable products like juice into composite packages that uses ultrasonic vibrations to improve sealing reliability and longevity. The sealing device has a vibration control unit with piezoelectric transducers to generate ultrasonic vibrations. This vibration-assisted sealing is done by passing the package through a sonotrode with a sealing surface that vibrates. The ultrasonic vibrations enhance sealing quality and reduce wear on the sonotrode compared to static sealing. The vibration control unit houses the piezoelectric transducers and allows customizing the ultrasonic vibration frequency and amplitude.

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A transversal sealing system for roll-fed carton packaging machines that improves the sealing quality and prevents over-melting of the packaging material. The system uses an ultrasonic sealing head and pressure plates to seal the carton edges. The ultrasonic head melts the inner layer, an upstream pressure plate prevents bulging, and a downstream plate compresses. This sequential sealing sequence avoids overheating and maintains proper layer alignment.

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A closure assembly for containers that allows flexible installation methods while providing secure sealing and tamper evidence. The closure has a removable cap and neck insert that can be inserted molded or ultrasonically welded into the container opening. An anchor piece extends from the cap and has an energy-directing protrusion that aligns with a ridge on the neck insert. This allows the cap and insert to be joined by either insert molding or ultrasonic welding. The low profile anchor and base flange facilitate automated or manual assembly. The anchor provides a tamper indication feature when broken during cap removal.

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Packaging device for producing packaging units without using shrink film or strapping bands. The device has an attachment tool to wrap the outer packaging around the articles and an ultrasonic joining device to join the overlapping layers. The joining device has a movable sonotrode that can be positioned over the articles covered by the wrapping. The sonotrode and anvil tool are used to join the overlapping layers of the wrapping material without additional connectors or adhesives.

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Packaging device for battery heat shrink film that allows automated, high-speed packaging of batteries using continuous film instead of individual bags. The device has a transmission mechanism, battery handling device, ultrasonic welding mechanism, and film feeding device. Batteries are fed into the device, wrapped in film, and transported to the welding mechanism where the film is compressed and cut. This enables automated, efficient battery packaging using continuous film instead of bags.

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A method and device for closing a sleeve-shaped packaging like a cardboard roll with a base or lid without open edges. The method involves inserting the base/lid into the roll, rolling the edge, and folding the roll and frame over to form a multi-layer joint on the base/lid surface. This creates a sealed connection with overlapping layers for complete product protection without an open edge. An ultrasonic sealing device can be used to fold and seal.

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A single-piece lid for a container that can be ultrasonically welded onto the container and then reused after opening. The lid has an opening tab with a weakening line that breaks when pulled to open the lid. This allows the lid to be easily opened and then sealed back onto the container using ultrasonic welding. The lid has a recessed housing with a fixed ring inside that the tab engages with to open. When the tab is pulled, it breaks the weakening line and the ring prevents the tab from going all the way off. This allows the lid to be reused without needing a separate cap.

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A ready-to-fit bottle cap design that allows easy dispensing of soluble contents like tea bags into a beverage without using weak layer structures. The cap has a pressing part that deforms to push down a sealing plug and open the storage chamber. The pressing part has an elastic section that extends outward away from the storage chamber. This allows the pressing part to move downward and disconnect the sealing plug from the lower cover. It also has a protective section that protrudes upwards around the pressing part. The lower cover is connected to the upper cover using ultrasonic welding, which provides better sealing compared to snap-fit connections.

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Making a container from two laminated cellulose bodies that can be joined using ultrasonic welding and/or induction sealing to create a sealed container with a compostable and/or biodegradable material. The container has two rigid cellulose bodies, each with a laminate on part of the surface. The bodies are joined at overlapping flanges. The laminate allows joining without needing high-temperature sealing methods. The laminate can cover holes in the cellulose. The container can have see-through sections.

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Sealing device for packaging pourable products like juice or milk into sterilized composite packages. The sealing device uses ultrasonic vibrations to weld the seams. It has a sonotrode with a sealing head that vibrates when ultrasonic signals are applied. The vibrations create a tight seal. The sealing head is connected to a vibration control unit with piezoelectric transducers. The transducer temperature is monitored to detect aging and degradation. Early detection allows replacing failing transducers before they completely fail. This prevents unexpected sealing failures. The monitored transducer temperatures indicate operating characteristics, aging, and remaining lifetime.

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Cap for bottled water bottles that contains tea directly inside the cap instead of requiring a separate tea bag. The cap has a chamber inside filled with powdered tea. When the bottle is turned upside down or shaken, the tea melts and infuses into the water. The tea is sealed inside the cap using an adhesive mesh that attaches to the interior surface. The cap can be manufactured using a device that fixes the cap, ultrasonically processes it to melt the mesh, and then lowers a cutting tool to separate the mesh and seal the tea inside.

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Spout stopper and packaging container design to prevent deformation and pinholes during welding. The spout has a pedestal with a tapered inner surface that transitions to a flat base. The spout attaches to the container via a narrow annular section. This design prevents bulging and pinholes during welding by allowing the pedestal to flex vertically during ultrasonic welding without deforming the spout. The tapered inner surface prevents upward bulging, and the narrow annular section prevents pinhole formation by preventing resin confluence.

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Method for producing oral pouched snuff products like snus with reduced waste during pouch formation. The method involves using a filling material containing at least 20% by weight of ingredients with melting points below 180°C. This prevents discoloration and burnt flavor issues that can occur in pouched snuff products with low moisture contents. The method also allows sealing the pouches using ultrasonic welding to avoid protruding unsealed ends. This avoids discoloration and waste during high-speed production. The pouched snuff products made by this method have low moisture contents of 20% or less, sealed pouches without protruding ends, and fillings containing melting point ingredients to prevent discoloration.

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Standing pouch with a spout that enables stable welding at low output even when ultrasonic welding is performed, and that does not deform the spout, cause poor sealing, or cause pinholes. The pouch body and spout are made of polyethylene, and the pouch body sealant layer has a rough inner surface. The roughness improves adhesion during ultrasonic welding without requiring high power. It prevents issues like spout deformation, poor sealing, or pinholes.

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Size-adjustable antibacterial foot wrap for pets that can be worn on their feet to protect and prevent injuries indoors and outdoors. The wrap has an adjustable ankle band that passes through holes on the top of the wrap. This allows customizing the fit around the pet's ankle. The wrap has a main body with an upper instep section and lower sole section connected by ultrasonic fusion. The lower sole has an anti-slip section. The wrap is made of antibacterial, elastic, and breathable fabric to prevent odors and discomfort for pets.

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A cloth packaging machine that can accurately seal and cut dark or colored adhesive films without requiring light to pass through. The machine uses ultrasonic detection to automatically control hot melt cutting of the adhesive film ends. It has blowing nozzles to lift the film ends, ultrasonic detectors on the sealing stations to check for cloth end, and upper and lower light detectors as an alternative option. This allows sealing and cutting of dark or colored films without relying on light transmission.

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Assembly for manufacturing sealed packaging units from sheet packaging material to improve sealing and avoid interference when making packages with spouts. The assembly has a longitudinal line sealer and a transverse line sealer parallel to the direction of travel. The transverse sealer has sealing elements and abutments. The sealing element is on the side of the tube with the longitudinal seal, and the abutment is on the opposite side. This avoids interference with spout necks when sealing the transverse seal. The abutment can have a recess to accommodate the neck. The transverse sealer can also have a cutting element for separating sealed units. The sealer elements can be ultrasonic sonotrodes. The gripping jaws clamp the sheet material for longitudinal sealing, and the transverse sealer seals the tube as it advances.

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A spout and container design for reducing the amount of plastic in packaging. The spout has a paper-reinforced portion that can be inserted-molded into plastic. This allows using less plastic while still maintaining functionality. The paper-reinforced spout connects to a tube-shaped body with one closed end and the other sealed to the spout flange. The container can be manufactured using ultrasonic welding to join the paper-reinforced spout to the plastic body.

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A packaging container made of laminated paper sheets with improved sealing and appearance. The container is formed by ultrasonic welding the laminated sheets, with features to prevent resin flow and puddling at the welding interface. The ultrasonic horn and receiving jig contact surfaces are flat, and inclined surfaces are provided on the sides. This prevents resin flow and puddling around the welding area, avoiding problems like reduced strength, cosmetic defects, and resin contamination inside the container.

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Reducing plastic in fresh produce packaging by using a modified lid with a large central opening covered by a film label instead of a solid lid. The modified lid is sonically spotwelded to the tray. The central opening is cut out of the original lid and the label is applied over it. This reduces the plastic content compared to a full lid. The lid scrap is recycled.

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