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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A lid arrangement for containers like cans that provides easy opening without sharp edges or membrane remnants. The lid has a shape-maintaining element that attaches to the lid ring. The attachment method involves ultrasonic welding the element to the ring. The key to preventing damage to the removable layer is using circumferential projections on the ring that fuse together when excited by ultrasound. These projections contact the element without destroying the removable layer. The projections conduct heat to the element's contact surface for fusion bonding. This avoids thermomechanical stress on the element that would degrade the removable layer.

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Ultra-sonic sealing method, anvil assembly, and system for sealing packaging material without aluminum layers. The sealing method involves pressing the sections together while ultrasonic waves melt the plastic. The anvil assembly has spring-loaded anvil heads to apply pressure. The system has ultrasonic horns on one side and the anvil assembly on the other side for sealing. This enables sealing chilled food packages without aluminum layers since ultrasonic sealing doesn't require conductive layers like induction sealing.

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Portion-packaging method and apparatus for oral pouched snuff products that enables high-speed, efficient, and clean production of snuff packets. The method involves continuously feeding packaging material around the snuff as it advances, forming seals across the snuff. The seals have width less than 2mm to minimize down-time and prevent sticking. The seals are formed using ultrasonic welding. The apparatus has supply units to feed the packaging material and an ultrasonic welding unit for forming the seals.

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Exchangeable ultrasonic welding modules for packaging machines that can be easily swapped between filling tubes to weld longitudinal reinforcing folds in packaging film. The modules are designed to fit around the filling tube and have a quick release mechanism for easy exchange. This allows multiple modules to be used in a machine with interchangeable filling tubes, reducing costs by not requiring dedicated modules for each tube. The quick release mechanism allows the modules to be quickly swapped between tubes as needed.

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Multilayer packaging film that can be ultrasonically sealed without delamination. The film has a sealant layer with two propylene-ethylene copolymers, one with lower modulus and one with higher modulus. The tie layer adjacent to the sealant layer contains either copolymer. This allows the sealant layer to deform during ultrasonic sealing without delamination at the tie layer interface.

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An anvil for sealing tubular packaging material like Tetra Brik aseptic cartons. The anvil has ultrasonic vibration capability to improve sealing quality. The anvil has a first ridge and a second ridge extending along parallel axes. The ridges are vibrated at ultrasonic frequencies to create mechanical vibrations in the sealing area. This enhances sealing by increasing the bond strength between the layers of packaging material. The ultrasonic vibrations help the molten sealing layers adhere better and provide a more secure seal compared to static anvils.

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Device for ultrasonic welding of packaging sleeves that allows reliable sealing with changing material thicknesses. The device has multiple tools arranged opposite each other in a gap that aligns with the sleeve transport direction. The tools can be moved transversely to the gap to adjust its width. This allows accommodating variable sleeve thicknesses without needing passive gap adaptation during welding. The tools can also be supported by parallel springs that enable torque-free movement. One tool can be a rotating anvil that rolls on the sleeve for continuous welding of moving sleeves.

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A replaceable ultrasonic welding module for forming and welding longitudinal folds in packaging film in form-fill-seal machines. The module can be easily swapped between filling tubes in the machine without disassembly. It has a component with a sliding guideway that fits into a counter track on the filling tube frame. This allows the module to be pushed out and replaced between tubes. Locking elements secure the module in place during operation.

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Oral pouched tobacco product with reduced protruding ends that allows denser packing in containers. The pouched tobacco has seals at the ends with widths less than 2 mm. This prevents protrusions that can get squeezed between container parts. The narrow seals are achieved through ultrasonic welding that seals the pouches tightly. The narrow seals and lack of protrusions allow denser packing of the pouched tobacco in containers.

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Oral pouched snuff products like moist snuff or tobacco-free snuff that have seals on their packaging pouches with widths less than 2 mm. The reduced width seals prevent protrusions at the edges of the pouches when filled randomly into containers. This allows denser packing of the pouches in containers compared to wider seals that can squeeze between the container walls. The narrow seals are achieved by simultaneous ultrasonic welding and cutting of the packaging material. The ultrasonic welding creates seals with widths less than 2 mm, and the cutting removes excess material to make the seals coterminous with the pouch edges.

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Oral pouch snuff product with a seal design that allows dense packing in containers without squeezing. The pouch has two narrow seals, one at each end, with widths less than 2mm. This prevents excess material at the ends when randomly packed. The narrow seals also minimize compaction when the lid closes. The narrow seals are achieved by simultaneous ultrasonic welding and cutting during production.

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Oral pouched snuff product that can be chewed and deformed without breaking the seal, and a method to manufacture it at high speed. The pouched snuff contains a filling material and a saliva-permeable pouch made of elastic mesh material with thermoplastic polyamide fibers. The pouch has seals that have high strength when dry and wet. The manufacturing method involves simultaneous ultrasonic welding and cutting of the packaging material to make seals with widths as narrow as 1 mm. This allows the pouched snuff to be deformed without breaking the seal. The elastic pouch material made of thermoplastic polyamide fibers enables chewability and deformability. The ultrasonic welding provides strong seals.

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A continuous longitudinal welding device for packaging machines that enables true continuous welding of layers of material in packaging machines. The device has fixed ultrasonic welders with facing sonotrodes on opposite sides of a stationary support piece. The layers of material to be welded pass between the sonotrodes and support piece as the machine moves. An elastic pusher prevents the layers from getting trapped. This allows simultaneous continuous welding of two layers by the two welders. The stationary design eliminates movement-limited welding devices.

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Ultrasonic packaging machine that accurately detects if packaging film is caught in the sealing jaws without using an expensive sensor. The machine has an ultrasonic vibrator connected to the sealing horns. A control unit vibrates the horns at a predetermined frequency during sealing. It also has an acquisition unit to measure the actual output frequency during sealing. A determination unit compares the measured frequency to the predetermined frequency and determines if the film is caught based on the frequency change. This allows accurate detection of film biting without a separate high-precision sensor.

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Ultrasonic packaging machine that can adapt the ultrasonic sealing frequency to different packaging conditions to improve reliability and ease of operation. The machine calculates the optimal sealing frequency based on factors like film type, packaging conditions, and past sealing data. This calculated frequency is then used to operate the ultrasonic vibrators instead of the default factory setting. By dynamically adjusting the frequency for each packaging job, it ensures consistent and reliable seals regardless of variables like film thickness or product type.

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Packaging food products like bars or blocks in a way that provides better protection and reduces product movement inside the package. The packaging involves wrapping the product tightly between two webs using ultrasonic sealing. The ultrasonically sealed webs overlap with one web having a greater surface area than the other. This tight wrap reduces product movement inside and provides better protection. The ultrasonic sealing allows stronger seals without damaging the product. The method involves simultaneously ultrasonically welding seals along the sides and ends of the product to fully enclose it between the two webs.

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Packaging machine for long food products like pasta with a transverse flap closing mechanism. The machine has a conveyor belt to move the product horizontally. It forms a wrapping around the product by folding and coupling the side edges. The longitudinal closing is done permanently by welding the edges. The welding is done by either electric current through wires or ultrasound to join the edges. The transverse flap closing provides easy opening of the package without tearing the edges.

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Device and method for sealing composite cardboard/plastics packaging components like beverage cartons. The device has pivoting expansion elements with torsion springs that allow precise movement between rest and operating positions. The expansion elements have sealing jaws that form a closed contour around the opening in the die. This provides uniform pressing force and sealing around the overlap region when the packaging components are joined. The pivoting motion is controlled by torsion springs to allow precise directional guiding. The device can also have elements for introducing connection heat like ultrasound sonotrodes or hot air openings. The expansion element reversal can be magnetically or by spring force reversal.

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Sealing apparatus and method for flexible packaging materials that allows sealing of variable thickness films. The method involves using an ultrasonic sealing horn with adjustable energy levels to accommodate films with different numbers of layers. It provides uniform sealing force for thin films and higher force for thicker films to prevent undersealing or oversealing. This prevents defects like lap seals and underwelding. The horn design with adjustable energy, tilted horn position, and variable layer films enables consistent sealing of variable thickness films.

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Bag-making packaging machine with stable ultrasonic sealing quality for cylindrical bags. The machine has a section that oscillates at ultrasonic frequencies to weld the overlapped ends of the cylindrical film together. To prevent excessive welding and damage, the machine regulates the oscillation frequency during operation. It acquires the frequency, sets a range, and adjusts the oscillator if it goes outside the range. This stabilizes the oscillation energy and prevents over-welding. Cooling the oscillator helps keep frequencies consistent as it heats up during use.

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Ultrasonic sealing device for packaging machines like pillow wrapping machines. The sealing device uses an ultrasonic horn and anvil to seal a tubular film. It stabilizes the sealing pressure by controlling the air pressure supplied to the cylinder containing the horn and anvil. The device also allows customizing the sealing parameters based on the packaged object. This ensures clean seals and reproducibility by matching the ultrasonic amplitude and pressure to the specific packaging conditions.

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Vertical filling and packaging machine for producing a packaging bag filled with a liquid product, with a horizontal sealing device that seals the horizontal ends of the bag without introducing air or foaming. The horizontal sealing device is placed below the rollers that form the bag tube. It uses ultrasonic vibration to weld the films together instead of heat sealing. This prevents air bubbles and foaming when sealing the horizontal ends because the vibration seals without heating the films.

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Ultrasonic sealing device for packaging machines that stabilizes sealing pressure and prevents device failure during ultrasonic sealing of films. The device has a cooling system to regulate horn temperature and prevent thermal expansion issues during sealing. It also has a warm-up mode where the horn vibrates and cools before packaging. This stabilizes thermal expansion and prevents horn failure from heat. After warm-up, the device checks gap stability and allows packaging if gaps are within range. This ensures consistent sealing force.

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Automatic horizontal packaging machine for filling and sealing flexible containers made of heat-sealable film. The machine has a conveyor to move containers through filling and sealing sections. The sealing section uses an ultrasonic welding device with sonotrodes to attach the upper edges of the films to convex surfaces on the closure base. This allows welding flat seams on non-flat surfaces. The sonotrodes have movement devices to separate from the films during conveyance and press for welding. The machine can have multiple welding stations or a single station with dual sonotrodes.

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A lid assembly for a packing container that allows easy opening of the lid after initial sealing without damaging it. The lid assembly has a lid ring on the container and a dimensionally stable lid part that can be placed on the ring. The lid part is sealed or welded to the ring using ultrasonic energy. The seal is made along a circumferential projection on the lid part that matches the ring's inner cross section. This provides a gas-tight seal between the lid and ring while allowing the lid to be easily separated. The projection prevents full melting of the peelable layer on the lid during sealing.

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Packaging method and apparatus for wrapping products like food items to provide improved seal strength, product protection, and reduced packaging material. The method involves ultrasonically welding seals between two webs of packaging material around the product. One web overlaps the other, with the larger web embracing more product. This tighter wrapping prevents product movement. Two separate ultrasonic sealers simultaneously weld parallel seals on opposite sides. End seals are also welded. The spacing between sealers receives the product. The overlapped seals enclose it between the webs. The larger web provides better containment. The ultrasonic welding avoids heat damage.

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Device and method for sealing composite cardboard/plastics packaging like beverage cartons with improved folding sealing mechanism. The sealing device has expandable elements that surround the packaging components during sealing to apply pressure and create a seal. The expandable elements pivot between a compact position for easy insertion and an expanded position for sealing. They are connected to torsion springs to precisely guide the pivoting motion and prevent wear. This allows controlled folding and unfolding of the expandable elements for consistent sealing of the packaging. The sealing die also has elements for introducing connection heat like ultrasound or hot air to seal the packaging.

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Ultrasonic sealing machine that calculates optimal sealing frequency based on packaging conditions to improve reliability and ease of operation. The machine has an ultrasonic vibrator connected to the sealing horns. A calculation unit determines the optimal sealing frequency for different packaging conditions using frequency-related information acquired during sealing. This allows operating the vibrator at the optimal frequency regardless of conditions, improving sealing quality. The frequency calculation is based on differences in film type, sealing type, etc.

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A bag for packaging and transporting bulk products like soil, fertilizer, grain, etc., that has a handle system that allows safe handling of loaded bags without leaks or moisture penetration. The bag has a body made of woven or non-woven polymeric material like raffia. The handles are attached to the bag without perforating the material or altering the production process significantly. The handle attachment uses ultrasonic welding instead of sewing, which avoids bag leakage issues associated with stitching. The ultrasonic welding involves applying high frequency vibrations to join the handle to the bag without cutting or puncturing the material.

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A packaging container with improved sealing between the paper cup and plastic overcap. The container has a paper cup with a ring at the open end. The ring is ultrasonically welded to the entire circumference of the open end. This provides a secure and leak-proof seal between the paper cup and plastic overcap when the overcap is fitted. The ultrasonic welding ensures a strong bond between the ring and the paper cup.

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