Rotational Molding for Large Container Formation

Device and method for manufacturing inflatable cushions that can be used as packaging material. The device uses a continuous film web that is inflated, sealed, and cooled in sequence to form inflatable cushions. The sealing mechanism has a heating zone followed by a cooling zone. The heating element extends through both zones with a smaller cross section in the heating zone to create a high heat zone that seals the film. This allows the film to cool and retain the inflation between the sealed plies. A low friction layer between the roller and heating element reduces wear during sealing.

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Packaging apparatus and method for sealing tea bags using two counter-rotating sealing dies. The dies are heated by separate drums with multiple zones. The inner zone has IR elements for precise temperature control. The outer zone has IR elements offset for uniform pressure. A temperature sensor measures die temperature during rotation. A control system uses this real-time data to optimize die heating and seal quality. The dies also have pressure devices to compensate for tissue variations. The dies counter-rotate while pressing tissue together to form pockets. This prevents bending issues. The sealing dies heat and seal the pockets using the optimized die temperature and pressure control.

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A machine and method for making non-rectangular pouches containing loose products like snus, that allows for high productivity and quality standards while enabling production of pouches in shapes other than the traditional rectangular shape. The machine has forming drums that rotate and reciprocate to compress and seal the pouches. The drums have pockets with suction to hold the wrapping material. The drums heat around the pockets to seal the pouches. This allows making pouches in non-rectangular shapes by forming them around the curved drums. The suction helps insert the material and the reciprocating motion compresses and seals it. The heating around the pockets seals the pouches.

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A compact and efficient mechanism for lifting, transferring, and rotating embryo preforms in a bottle blowing process. The mechanism allows automated insertion of preforms into a heating barrel and rotation during heating to prevent local overheating. It replaces separate lifting and rotating mechanisms in prior art. The compact design reduces space and cost compared to separate mechanisms. The mechanism has a lifting drive to raise/lower the preform seat, and a rotating drive to turn the preforms during heating.

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Preform heating device for plastic bottle blowing that automates and compactifies the heating process to improve efficiency and equipment utilization. The device has a rotating carousel with multiple heating barrels around the circumference. Embryos are fed into the barrels from a feeder, heated, and then removed by a robot. This allows continuous feeding and heating of preforms without manual intervention or moving between machines.

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Device and method for producing flexible packaging tubes from films with welded seams. The device has overlapping induction heating coils for the inner and outer contact bands that heat the bands simultaneously as they pass. This prevents steep temperature ramps and prolonged cooling between coils, reducing wear and energy consumption compared to separate coils. The coils form part of a parallel resonant circuit fed by independent alternating current generators.

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Producing flexible tube bodies for packaging tubes using a method that avoids kinks and bulges in the longitudinal seam when heating and joining strips. The method involves feeding the strip at a slower rate than the film substrate edges to compensate for thermal expansion. This allows using heated strips without issues. The slower strip feed speed prevents lateral buckling and lurching when joining to the edges. The strip can also be fed cold. A pressing point before feeding helps flatten the strip.

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A packaging machine, heating device, and method to improve packaging quality by preventing material damage and maintaining appearance. The machine has an upstream heating section with rollers that bend the packaging material to raise its temperature. This heated material is then fed into the bag maker where it bonds better due to the raised temperature. The heating section prevents floating and damage issues by softening the material before sealing.

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Cushioned packaging article and method for manufacturing it that provides improved packaging stability and reduces environmental impact compared to traditional packaging methods. The article has an outer shell film layer, an inner skin film layer, and an air layer between them. The layers are physically separated except for fusion points. The article can be manufactured by cutting and fusing sections of a tubular outer shell and inner skin tube, filling with air, and fusing the ends. This allows the article to be delivered without additional packaging or boxes. The air layer cushions the packaged item and prevents shaking, while the fusion points securely hold the item.

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Miniaturized PET bottle manufacturing device with improved efficiency and reduced size compared to traditional methods. The device uses a blowing section between the heating section and blow molding section to fully heat and expand thick preforms without prolonging the heating time. This allows thick preforms to be blown into bottles without whitening or deformation issues. It also uses a rotating device to evenly heat the preform during blowing. The blowing section shortens the overall heating length and prevents temperature gradients. This enables high speed production of thick or special shape bottles without enlarging the device.

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Method for producing environmentally friendly and economical protective packaging using expandable adhesive between layers of the packaging. The expandable adhesive expands when heated to provide cushioning. The packaging is formed continuously from web substrates with an expandable adhesive between them. The packaging can be used to create padded enclosures, bags, and open pouches. The expandable adhesive expands when heated, like RF energy, to provide cushioning. This allows uniform protection for all package sizes. The expandable adhesive contains expandable microspheres that expand when heated.

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Packaging forming device for tubular bags that improves process efficiency and stability by heating and sealing the bag in stages while removing air. The device has a longitudinal sealing unit with multiple sealing rollers and a heating element between them. An air suction unit is positioned between the first and second sealing rollers to extract air from the bag as it's being sealed. This prevents cooling and air pockets that can affect sealing quality. The heating and air removal stages are coordinated to optimize bag properties.

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Packaging forming device for a tubular bag machine that improves process stability and efficiency by heating the packaging material between the molding and sealing units. The device has a heating unit to heat the packaging material tube in sections before sealing. This prevents cooling and reduces stability issues when the material travels between the molding and sealing units. The heating element is integrated into the air extraction unit, which removes excess material after molding. This allows the heated material to be directly fed into the sealing unit without cooling.

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Packaging forming device for tubular bag machines that improves process stability and efficiency by heating the packaging material tube between forming and sealing. The device has a heating unit with a thermal element that surrounds the filling material receiving area. This element has fixing elements to hold the filling goods in place during transport and sealing. By heating the tube section containing the product, it prevents cooling and deformation issues that can occur during transport. The fixed filling prevents shifting and misalignment during sealing.

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Pocket forming device and blister packaging machine to prevent melting of low-melting-point layers in multilayer films during heating. The device has heating plates that don't pinch the film edges to prevent them from contacting and melting. This prevents adhesion of melted material to the plates, guides, or products. The blister machine uses this device to form pockets in multilayer films without melting the inner layer. This prevents foreign matter contamination.

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Layered protective packaging that expands upon impact to cushion fragile items during shipping. The packaging is made using a unique manufacturing process involving treating layers with a coating composition and then heating/radiating it to expand and transform into protective layers. This allows creating lightweight, expandable cushioning without bulky inserts or structures. The coating is applied using flexographic printing techniques.

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Bag-making and packaging machine that forms bags by sealing a tubular film around articles. The machine has a rotating transverse sealing mechanism with interchangeable sealing members. One member has a punch to form holes and the other doesn't. When attached to the rotating member, their lower ends are at the same height. This prevents wasted space between the sealing members and fixed members below, preventing bag thickness reduction.

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Automatic machine for making pouches from flexible materials like films with additional functional elements. The machine has stations to position and attach the functional elements, cut the film into rectangular sheets, shape them into pouches, weld the sides, and transfer to a filling line. The stations are connected by a rotary transport unit with perforated sleeves that hold the pouches. The machine can monitor operating conditions at each station and collect data centrally.

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Apparatus and methods for manufacturing inflatable cushions for use as packaging materials. The process involves feeding a web material through a sealing assembly that includes a heating zone to seal the overlapping layers and a pinch zone with compression elements to apply pressure. The compression elements are wider than the transport belt to overlap both the belt and an isolation element. This limits backflow of fluid from the chamber. The compression belt wraps around the arcuate support surface, rotating the disc. The combined profile of the arcuate support and low friction belt has a smaller radius than the disk. This contoured path helps prevent backflow and improves seal quality.

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Pouch design to prevent top seal peeling and pouch rotation during heating. The pouch has a triangular steam release seal protruding into the interior and an unsealed penetration through the pouch layers. Steam generated inside the pouch can escape through these openings to prevent pressure buildup and top seal peeling. The penetration is positioned relative to the steam release seal to further prevent pouch rotation during heating.

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