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 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 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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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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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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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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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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A packaging device and method to produce packaging units without the need for plastic film or straps. The device joins articles together using a paper or cardboard strap and ultrasonic welding. An anvil tool holds the strap between articles while a movable sonotrode applies ultrasonic energy to weld the strap. This creates a sealed outer packaging around the articles using just paper or cardboard.

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Ultrasonic sealing of packaging material tubes with overlaps created by longitudinal sealing. The transverse sealing is done using an ultrasonic welding device with an anvil having a ridge section that matches the thickness of the material layers. This allows consistent sealing of two-layer and three-layer sections. The amplitude, frequency, and pressure are tuned to achieve equal temperature and melt in all sections.

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Film packaging bag containing contents, vertical bag-making filling machine, and manufacturing method that improves seal efficiency and stability for bags filled with fluid products like liquids. The bags have a unique seal configuration with a heat-welded preheat seal followed by an ultrasonic seal. This sequence allows softening the film for easier ultrasonic welding. In the machine, a preheat sealing section precedes the ultrasonic sealing section. The preheat sealing time is shorter. The ultrasonic sealing cools the preheat seal. The narrower ultrasonic seal width is symmetrically superimposed on the wider preheat seal. This compensates for ultrasonic welding drawbacks like softening requirements, step elimination, and submerged seal issues.

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Film packaging bag containing contents, a vertical bag-making filling and packaging machine, and a method for manufacturing the bag that improves efficiency and stabilizes quality. The bag has a sealing portion with a preheat seal formed by heat welding and an ultrasonic seal formed by ultrasonic welding. The preheat seal softens the film, allowing quick ultrasonic welding. This compensates for ultrasonic welding's drawbacks like step formation and fluid fill issues. The machine has a similar preheat/ultrasonic sealing step. It cuts the preheat seal width narrower than the ultrasonic seal width. This allows a wider preheat seal for easier welding while still having a narrower ultrasonic seal for better quality. The method involves filling, sealing horizontally, then vertically, with preheat seals before

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Batch packaging of snuff pouches for oral use at high speed with reduced downtime by using continuous feed and ultrasonic sealing. The method involves supplying filler continuously to moving packaging material, folding it longitudinally to wrap the filler, and then making transverse seals using ultrasonic welding to enclose the filler. This avoids filler sticking to the packaging device compared to stopping and starting feeds for each pouch. The device has feeding units, a compression station, and an ultrasonic sealing unit.

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Interchangeable ultrasonic welding jaws for sealing reinforced packaging films in vertical or horizontal packaging machines. The jaws are designed to easily replace for welding longitudinal reinforcing edges on packaging films. The jaws have a specific shape and configuration to fit around the filling tubes in the machine. They can be easily swapped between tubes to accommodate different film widths with reinforcing edges. This allows flexible changeover between bag sizes without modifying the machine.

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Anvil for sealing tubular packaging material like food containers that uses ultrasonic vibrations to improve sealing quality. The anvil has piezoelectric elements to generate mechanical vibrations in the ultrasound range. This ultrasonic vibration is applied to the packaging material during sealing to enhance the sealing quality compared to conventional sealing. The ultrasonic vibration helps to bond the layers of the packaging material better during sealing, providing improved sealing strength and barrier properties.

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Packaging food products in containers using ultrasonic bonding to improve sealing and eliminate the need for adhesive or heat sealing. The containers have trays with flanges around the cavity openings and covers that overlap the flanges. Ultrasonic bonding modules press the cover and flange together and vibrate at ultrasonic frequencies to seal the container without heat or adhesives. The ultrasonic bond extends continuously along the container perimeter.

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Automated method for manufacturing and filling sterile liquid products in tubular segments using ultrasonic welding. After each weld, the tube is precisely displaced to the desired segment length. This ensures consistent segment lengths and controlled forces on the welds. Welding parameters like time, energy, and pressure are measured and used to control the welding process. The system identifies supply containers and delays welding until a code is received.

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