Rolling for Package Material Uniformity

Packaging substrates like display glass with fluid flow to prevent folding and minimize settling time of interleaf material. The method involves positioning the substrate on a frame, then using an arm tool with orifices that allow fluid to flow over the interleaf as it's placed. The fluid flow reduces air resistance and prevents folding. It also speeds up settling as the fluid helps the interleaf conform to the substrate shape.

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A method of producing a gas barrier laminate for packaging that prevents wrinkling and cracking while improving barrier properties. The method involves forming a metal oxide layer on a polypropylene or polyester substrate using vacuum deposition. A coating film is applied over the metal oxide layer. The coating film is preheated with infrared radiation before curing at 50-120°C. This sequence prevents wrinkling in the substrate and cracking in the barrier coating. The coating composition contains silanes or water-soluble polymers.

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Square-bottom packaging bags with reduced warping compared to traditional bags using laminated films with biaxially oriented outer layers. The bags have a unique construction and manufacturing process to minimize warping. The bag has a square bottom with folded sides and top. The outermost layer of the folded sides is a laminate without paper, using a biaxially oriented film instead. This prevents warping compared to paper-containing laminates. The manufacturing process involves folding the bags before sealing, with the folding direction aligned with the sides' rectangular opening. This reduces warping by preventing differential shrinkage between the sealing areas. The bottom is also a laminate with biaxially oriented film to further reduce warping.

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Packaging material for forming individual packages for liquid food products that reduces imperfections in sealing and cutting compared to conventional cushion-shaped packages. The packaging material has a core layer with weakening portions, an inner laminate portion with a heat-sealable layer, and a transverse sealing area between the package areas. This shape prevents the cushion effect when cutting and sealing that can cause imperfections. The weakening portions help flatten the material during sealing and cutting. The inner laminate with heat-sealable layer contacts the product.

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A cover tape for packaging electronic components that reduces warping and curling when applied to carrier tapes to improve package alignment and prevent component misalignment during mounting. The cover tape has a multi-layer intermediate layer between the base and heat seal layers. The inner layer contains a rubber-based material to improve adhesion. The outer layer has lower rigidity. This prevents internal stresses from pulling the tape and causing warping. The reduced warping helps prevent curling when the cover tape is applied to the carrier tape.

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Stretched multilayer film with reduced curling during manufacturing and improved mechanical properties for packaging applications. The film has a symmetrical layer structure with alternating PET and PBT layers. This prevents curling during stretching since the layers expand at similar rates. The film has high puncture strength and heat resistance. The layers are formed by coextrusion and simultaneous stretching. The PET and PBT interfaces are bonded without adhesive. This allows offsetting the crystallization density difference between PET and PBT to prevent curling during stretching.

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An aqueous primer for packaging laminates that provides improved adhesion and leveling of active energy ray curable coatings. The primer composition contains a binder resin, extender pigment, and water-based solvent. The primer has a surface tension of 24-38 mN/m and a surface free energy of 24-40 dyne/cm. The composition also contains a hydrophilic organic solvent and extender pigment like silica. This primer composition allows better transfer and leveling of the active energy ray curable coating onto the primer layer compared to traditional solvent-based primers.

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Wrapping paper for lamination that has excellent printability and is suppressed from curling when laminated with a resin film, as well as a laminate and a wrapping material using the same. The wrapping paper has a unique fiber composition to reduce curling when laminated with a resin film. It contains 70-90% core-sheath fibers (with a core and sheath layer) and 0-40% non-core-sheath resin fibers. This fiber composition allows the paper to shrink at a similar rate to the resin film when heat-laminated, preventing curling. The paper also has good dimensional stability to prevent curling due to humidity changes.

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Gas barrier laminate for packaging that provides good barrier properties without wrinkling the base layer. The laminate structure is a base layer of polypropylene or polyester, metal oxide layer, and a gas barrier coating layer. The barrier coating is applied after preheating with IR to cure at lower temperatures. The coating composition contains silicon alkoxides, water-soluble polymers, and optionally silane coupling agents. The cured coating has hardness 0.15-1.1 GPa. This prevents wrinkles in the base layer and cracking in the coating during manufacturing. The result is a gas barrier laminate with improved appearance and barrier performance compared to conventional methods.

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Corrugated cardboard organizing device for packaging box manufacturing to prevent warping and improve loading efficiency. The device has a two-stage falling mechanism where the cardboard bundle hits a support and then falls again. This allows air stagnation between the bundles to dry moisture and reduce sticking. The device also has features like a fixing slot, roller bearing, and push plate to prevent damage and align bundles.

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Cardboard feeding machine that can accurately and consistently feed variable-thickness cardboard products without stopping. The machine has a separator system with adjustable thickness rollers that flatten and align the cardboard as it enters the feeding mechanism. This ensures consistent thickness for stable transportation. The cardboard is then fed using a driving belt and product support plate. The adjustable rollers prevent thickness variations from interrupting feeding by flattening the cardboard beforehand.

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Laminate for packaging applications like retort pouches that has reduced heat deformation and curl compared to traditional laminates. The laminate contains at least 90% polypropylene and has a base layer with a stretched polypropylene film and a sealant layer with a non-oriented polypropylene film. The MD directions of both films are aligned. This alignment and the low thermal shrinkage of the stretched film prevent deformation during heat sealing. The low shrinkage also reduces curling during retort processing.

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Process for making thin plastic food packaging that prevents deformation and wrinkling during forming. The process involves heating the plastic sheet during forming to prevent wrinkling, but also using a forming body to press the sheet against the mold surface. This helps distribute the sheet evenly and prevent deformation. The body is heated to facilitate pressing and seal formation. The thinness of the sheet would otherwise cause deformation during heating. The forming device, mold, and body are configured to prevent overheating and damage to the sheet.

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Controlling warpage during wafer level packaging processes for semiconductor devices to increase yields, especially for fine pitched RDL layers. The method involves correcting warpage before and after each redistribution layer (RDL) formation step. The warpage correction involves heating and cooling the substrate at specific temperatures and durations based on the material composition and processing history. This targeted warpage correction allows fine pitch RDL patterning with line/space of 10/10um or less without degradation from outgassing or bubbling.

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Packaging method and machine for wrapping products like tissue paper items in thin sheets without creasing or misalignment. The method involves spreading the wrapping sheet flat, then moving the products and sheet together to wrap the sides. Temporary supports hold the sheet flaps during wrapping to prevent creasing. The products are lifted and wrapped partially, then moved to a conveyor where the sheet edges overlap and seal. This allows using thinner sheets while preventing wrinkles. The machine has a plane spreader, a reciprocating mover, and temporary supports to hold the sheet flaps during wrapping.

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A packaging box for holding articles like eggs made from areca leaves. The box has a rectangular shape with a snap fit connection between the box body and cover. The box body and cover are both made from flattened areca leaves. The leaf material provides strength, biodegradability, and ventilation. The leaf construction allows the box to securely hold eggs without additional film layers. The leaf compartments have ridges for ventilation and support columns. The leaf material can be recycled after use.

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A method for producing high-quality, flat printed packaging material using an assembly with improved reliability and quality compared to conventional methods. The method involves printing the packaging material using inkjet printers and drying it using near-infrared (NIR) radiation. The key innovation is transporting the thin material through the drying station using a thermally-conductive carrier roller with adjustable temperature. This allows precise control of the material temperature during drying to prevent quality issues. The carrier roller can have negative pressure or electrostatic attraction to grip the material without tension. This allows transport by roller rotation only. Multiple printers can print each color separately with dedicated drying stations or a single station for high temp materials. The assembly can also have separate white printing and drying stages.

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OCR inspection system for accurately reading wrinkled barcodes, QR codes, and text on wrapping paper using a specialized frame and air blowing mechanism. The system has a conveyor, camera, frame, and air blower. The frame supports the camera and has a hose to guide air from a compressor to a nozzle. The blower discharges high-pressure air towards the wrapping paper being inspected. This flattens the paper against the frame to remove wrinkles and improve OCR recognition.

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Molding device and method for molding cups into packaging materials like blister packs without wrinkles. The molding device has the die and hold-down with aerostatic bearings between the packaging material and tools. The bearings have openings connected to fluid sources. This allows air to flow in and out during molding, preventing wrinkles by avoiding excessive friction. The air flow also helps deformability of moisture-sensitive materials like fiber-based packaging.

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Automated post-processing device to remove air bubbles and improve quality of packaging boxes. The device has two stages. The first stage flattens the bottom and top edges of the box using rollers and a press conveyor. The second stage flattens the four side walls using rollers. The stages are synchronized to transport the box between them. This fully automated process removes air bubbles from laminate-printing paper interfaces.

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