Gravure Printing for Premium Package Quality

Gravure printing method for printed products that reduces paper deformation and ink penetration issues compared to traditional gravure printing. The method involves using a resin relief plate instead of a conventional gravure cylinder, measuring the gap between the impression cylinder and plate cylinder, and adjusting the liner thickness to optimize printing pressure. This prevents excessive deformation of the paper surface and improves ink penetration. The resin relief plate allows relief printing to provide a raised effect on the printed product. By analyzing the printed product after trial printing to assess depth of field, the printing pressure can be further refined for optimal results.

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Gravure printing method for BOPP cigarette packaging film that addresses the issues of deformation, ink sticking, and odor when printing on BOPP film. The method involves online corona treatment, low-temperature drying, non-contact winding, and using water-based inks. This prevents BOPP film swelling, wrinkling, odor, and deformation during printing. The method also involves optimizing BOPP film composition and production parameters.

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A gravure printing process for paper packaging boxes that provides improved quality, consistency, and efficiency compared to conventional gravure printing methods. The process involves using acid etching, glass microspheres, and controlled pressure to enhance the printing result. The steps include: 1) Engraving the printing plate with a stylus coated in wax, just scratches the surface. 2) Soaking the plate in acid water to etch the exposed areas. 3) Adjusting the squeegee pressure to prevent damaging the plate. 4) Printing using acid-etched plates, a protective cloth, and controlled squeegee force. Adding glass microspheres to the ink provides retroreflection for anti-counterfeiting. The acid etching deepens the ink wells for better ink coverage, and the controlled pressure prevents plate damage. The glass microspheres provide anti-counter

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Integrated printing system for paper packaging boxes that combines gravure printing and hot stamping in a single continuous process to improve efficiency and reduce time compared to separate machines. The system has a gravure printer, storage, material distribution, cutting, and hot stamping stations arranged sequentially. The boxes are pulled, cut, stored, stacked, and dried between stations before hot stamping. This allows integrated printing without transferring between machines.

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A packaging film with improved opacity and productivity for printing on laminated films for packaging. The film has separate colored layers instead of using a single colored layer for the pattern. The first colored layer is printed using a conventional method like gravure, flexographic, or inkjet. Then a second colored layer is added on top using a different printing or coating method. This separates the white ink layer from the colored pattern layer. It addresses issues of slower drying and lower opacity of water-based inks in gravure and inkjet printing compared to oil-based inks. It also avoids the opacity issues of white ink in flexographic printing. The separate colored layers allow using optimized printing methods for each layer.

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On-line gravure printing method for producing high-speed reverse gloss packaging with a smooth, touchable surface finish. The method involves using gravure printing instead of offset printing for reverse gloss effects, allowing faster production speeds. The key steps are: 1. Preparing the ink: The ink contains a binder, photoinitiator, wax powder, and siloxane diluent. The binder provides fluidity, the photoinitiator starts polymerization, the wax powder adds texture, and the siloxane dilutes the binder. 2. Laser etching cells into the printing plates: This creates a pattern of raised areas and recessed areas. The ink will adhere better to the raised areas, providing a glossy finish. 3. Gravure printing with two oils: A bottom oil with a lower viscosity and higher wax content goes first, followed by a top oil

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A method to create hot stamping packaging with multi-color rainbow gradient effects by using gravure printing, screen printing, and lamination. The method involves printing a hot stamping film with gradient colors using gravure printing, then screen printing an embossed ink pattern on the packaging. The semi-cured embossed ink provides adhesion for the hot stamping film while leaving areas unsticky for the laser effect. This allows combining the laser and gradient effects in the hot stamping.

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A multifunctional composite printing system that enables high-accuracy, high-efficiency composite printing of fine line widths and 3D structures. The system uses a roll-to-roll printing process with a composite printer that has a gravure offset printing unit to transfer ink patterns to the blanket roller, and a reverse offset printing unit to remove ink from specific areas. This allows fine patterns with narrower line widths to be printed on the blanket roller, then transferred to the substrate. The flexible blanket roller with inner and outer skins enables accurate contact and printing on 3D surfaces. The system also has a pattern fixing device and additional molding steps to further process the printed substrate.

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A method for producing anti-counterfeit packaging material with embedded hidden images that cannot be easily replicated. The method involves using gravure printing on composite transfer material made by precision etching aluminized film. The process involves pre-printing a release resin pattern on a base film using gravure plates. Then vacuum aluminizing is done on the base film to create a continuous aluminum layer. The release resin repels aluminum in the pattern areas. This results in an aluminized film with hidden images. The film is composite transferred to a white card backing and in-line gravure printed to make the final packaging material with embedded anti-counterfeit images.

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Double-sided printing process for paper-plastic composite materials like food packaging films that can print on both sides of the composite material. It involves using a flat offset printing plate for one side and a gravure printing plate for the other side, with matched plates on each. The gravure plates are wound around the gravure cylinder. This allows simultaneous printing on both sides of the composite material by alternating between offset and gravure printing. The matched plates ensure proper alignment of the double-sided patterns.

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A gravure printing process and equipment for paper packaging boxes that allows high quality, vibrant and long-lasting prints. The process involves dividing the image into sections and printing them separately instead of all at once. This improves the simulation and 3D effect of the printed image. The equipment has a clamping mechanism with fixed seats and guide posts to secure the paper during feeding.

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Packaging bag with 3D texture and enhanced product branding using a combination of gravure printing and screen printing techniques. The bag has both protruding and recessed features for a tactile effect. The recessed areas are printed using screen printing with a colored layer and a fluorescent layer around the edge. The protruding areas are printed using gravure printing. This creates a 3D effect with textured areas that stand out and recessed areas that have depth. It provides a more visually interesting and attention-grabbing packaging bag design compared to flat prints.

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Fully automatic high-speed gravure printing machine with improved ink drying for high-quality printing. The machine has a series of printing units with a printing device to apply ink to the film and a drying device above it. The drying device has a rotating drying roller with a heating element and tensioning component. This dries the printed ink as the film moves. The drying roller tension is adjustable to optimize drying time based on ink thickness. The heating element heats the roller surface to effectively dry the ink. The tensioning component pulls the film closer for thicker ink or further for thinner ink to improve drying.

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An environmentally friendly water-based gravure printing process for plastic packaging bags that replaces traditional inks containing toxic solvents like benzene and methanol with a water-based ink containing self-crosslinking acrylate emulsion, pigments, fluorescent pigments, and defoamers. This allows printing on plastic bags without harmful solvents, improving safety and reducing environmental impact compared to conventional gravure printing inks.

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Pre-composite aluminum foil surface gravure printing method to enhance aluminum foil printing quality and prevent wrinkles or material breaks during printing. The method involves compositing a thin aluminum foil with a thick polyethylene film before printing. The composite is cured and then gravure printed. The composite film has increased mechanical strength compared to just aluminum foil, preventing wrinkles and breaks during printing. The composite film is made by sizing the polyethylene film, gluing it to the aluminum foil, curing, and then gravure printing.

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A gravure printing machine for accurately and efficiently printing patterned trademarks on both sides of printed matter. The machine has two printing chambers, one for printing the bottom side and one for printing the top side. Ink transfer spokes, impression cylinders, and squeegees are arranged between the chambers. This allows simultaneous printing on both sides with controlled registration. A guide spoke system clamps the printed matter as it passes through. A drying device in the middle chamber removes excess ink.

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High-efficiency gravure printing process for plastic films that uses water-based inks without solvents to achieve high quality, accurate printing on plastic films like PVC, PE, and PP. The process involves preheating the film to 80-100°C, applying a thin primer layer, drying the primer to 10-20% humidity, and then printing the water-based ink. The preheating step helps the film shrink less during printing. The primer improves ink adhesion. Drying the primer reduces water absorption by the film. This allows the water-based ink to dry faster and prevents smearing. The dried primer provides a smooth surface for the ink to adhere to.

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A solvent-free printing and compounding machine that integrates solvent-free printing and compounding on the same equipment to enable continuous high-speed production without breaks between steps. The machine has a paper unwinder, printing units for multicolor solvent-free gravure printing, a coating unit for solvent-free adhesive application, and a composite rolling unit. It uses curing and cooling devices to solidify and cool the printed and composite materials. The machine allows printing directly onto coated substrates without separate winding and transport steps.

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High-speed rotogravure printing machine with inline coating station to create tactile and glitter effects on roll-to-roll flexible packaging substrates without loose flakes, environmental hazards, or health issues. The machine prints raised, textured surfaces that can be felt by touch using thick ink layers transferred by a specialized printing cylinder. The thick ink deposits create tactile effects on the substrate surface. Glitter particles can also be added to the ink for additional glitter effect. The machine uses radiation curable inks that can be cured quickly using UV LED or EB curing.

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A process to make paper film bags that can be fully degradable and eco-friendly. The process involves gravure printing water-based ink on one side of the paper and water-based thermal adhesive on the other side. The printed paper is then hot-pressed to seal the bags. The paper itself can be FSC certified food grade kraft paper. The water-based adhesive can be a specific composition with acrylic emulsion, water-soluble resin, and emulsifier. The bags can be sealed at temperatures around 150-250°C for 0.5 seconds or more. This allows degradable and compostable paper bags to replace plastic bags for packaging, as the paper itself and the adhesive can break down.

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