Advanced Printing Technologies for Package Decoration

Display material and packaging that allows printing using lasers without needing separate labels. The material contains a laser printing layer that changes color when hit by laser light. This allows direct printing by laser irradiation. The layer thickness is optimized to provide visible contrast between printed and unprinted areas. The material also has transparency to maintain visibility of printed text. The layer is made by blending pigments that change color when lasered. The blending technique prevents segregation during extrusion. The laser printing layer is sandwiched between other layers for gas barrier properties.

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Display body like packaging with white printing layers that can be laser printed without delamination or color change. The display body has a white printing layer that allows laser printing. The printing layer contains pigments like titanium oxide or calcium carbonate that change color to black when lasered. The printing layer has a specific void content (10-80%) and void height (1-8 um) to efficiently absorb laser energy. This improves print density without reducing mechanical strength. The non-printed regions remain white. The white printing layer is laminated on the substrate without intermediate layers to prevent delamination.

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A packaging material that provides bright white appearance, high light blocking, low additive levels, and uniform color across all viewing angles. The packaging material is a wall composition for containers that contains a polyester, a small amount of oriented polymethylpentene, and a small amount of light scattering pigment. This composition has a synergistic effect when subjected to orientation stress, allowing for reduced amounts of the components compared to traditional opaque packaging. The resulting package walls have high lightness, low color difference across angles, and high light barrier without swirl or pearlescence.

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Biodegradable composite packaging made from a casting process using a solution of dried lemongrass, polymer resin, plasticizer, and natural pigment. The steps involve preparing the polymer resin and pigment by drying them to remove moisture, then dissolving the resin and plasticizer in a solvent to make the polymer solution. The pigment is dispersed in the same solvent. This composite solution is then cast to make the biodegradable packaging. The dried lemongrass provides a natural, biodegradable colorant to replace synthetic pigments.

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Packaging material with increased biomass content for products that do not require sterilization. The packaging has a base layer, printed layer, adhesive layer, and sealant layer. The adhesive and printed layers contain biomass-derived components like biomass-derived polyols (alcohol-isocyanate reactions) and biomass-derived colorants. This increases the overall biomass content of the packaging compared to fossil fuel-based alternatives. The packaging can be used for products that don't need heat sterilization, like food items that are already pre-packaged and sealed.

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Food packaging material with improved hiding properties and recyclability compared to transparent packaging. The material uses an opaque adhesive layer sandwiched between transparent films. The opaque adhesive is made by mixing a urethane adhesive with ink pigments. This opaque layer prevents colors from transferring between the films and improves hiding properties. The transparent films can be recycled separately from the opaque adhesive. The adhesive formulation uses specific ink pigment, solvent, and dispersant amounts to optimize adhesion and opacity.

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A method for manufacturing laminated packaging material webs for liquid food containers using inkjet printing and infrared drying without reducing paperboard moisture levels. The method involves inkjet printing color pigments and solvent onto the paperboard, then drying using infrared radiation applied to the printed side. An absorption surface on the other side absorbs transmitted IR to prevent paperboard moisture loss. This allows full ink drying without dehydrating the paperboard.

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Polyester film for packaging that can be laser printed without peeling and maintains transparency. The film contains a layer that can be laser printed with pigments containing metals like bismuth, gadolinium, neodymium, titanium, antimony, tin, or aluminum. The film has a laser-printed layer with 100-3000 ppm of these metal pigments, low haze, and thickness uniformity. The film also has properties like color, refractive index, and shrinkage for packaging applications.

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A biaxially oriented polypropylene (BOPP) film with structural color properties without the need for ink printing. The film has a base BOPP layer and an additional structural color layer on top. The structural color layer is made by coating a composite material containing metallic nanoparticles, organic dyes, and a binder on the BOPP surface. The composite material forms a thin film with structural color properties when viewed at certain angles due to light interference. This allows the film to have color-shifting effects without the need for ink printing, providing a more environmentally friendly and cost-effective alternative to traditional BOPP films with printed colors.

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Flexible packaging ink composition with improved properties like gradation reproducibility and blocking resistance. The ink contains a pigment, a polyurethane resin with primary/secondary amino groups and hydroxyl groups at the ends, and solvents. The polyurethane resin is made by reacting biopolyesters, isocyanates, amino alcohols, and diamines. This biomass polyurethane resin has amine and hydroxyl groups at the ends for better adhesion and stability.

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Contact lens packaging container with a color to block light and protect lens contents. The container is made by dispersing a color powder in the plastic material used to mold the container. The container has a light blocking rate of at least 20% in the visible spectrum. This prevents excessive light exposure of the lens and buffer solution inside. The color powder dispersal can be a single step or multiple steps.

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Promoting products with plastic packaging using a scratch-off prize model without adding paper. The method involves integrating the scratch-off component directly into the plastic packaging itself, using special inks or layered chemicals to create color-changing images that reveal prizes when scratched. This eliminates the need for separate scratch-off stickers or coupons that would add cost and complexity when using non-paper packaging materials like plastic bottles and labels. The scratch-off prizes can be placed on the secondary or tertiary packaging rather than the primary product packaging.

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Packaging material for batteries and other electronic devices that provides improved coloring, moldability, and strength. The material has a colored adhesive layer sandwiched between a heat-resistant base layer and a metal foil layer. The base layer has specific properties like shrinkage rates, elastic modulus, and molecular weight range. The colored adhesive contains a curable polyester urethane resin with specific molecular weight and aromatic dicarboxylic acid content. This allows good coloring without cracking or peeling during molding and environmental testing. The packaging container, battery exterior, and medical device packaging can use this material.

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A blue colorant composition for recycled blue resin used in packaging ties that allows producing high-saturation recycled blue ties from mixed-color recycled pellets. The composition contains a blue pigment with hue angle 240-255 degrees and titanium dioxide. It blocks black contamination and prevents loss of blue color from mixed-color pellets. The composition can be added to recycled pellets containing black and other colors to increase their blue saturation to 15 or more.

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Packaging material and box for microwave ovens that have metallic luster without generating sparks or heat issues in a microwave oven. The packaging material has a glitter printed layer on the outside containing a pearl pigment and metal flakes. The pearl pigment provides the metallic luster and suppresses heat generation compared to using just metal flakes. The pearl pigment content is 40-90% of the total pigment and flakes. This allows a visually appealing microwave-safe packaging material and box.

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A pharmaceutical packaging box with visual effects to make the packaging more attractive and engaging for patients. The box has a unique design with features like 3D embossing, holographic foil stamping, or color-shifting ink to create visual effects that catch the eye and provide an enhanced tactile experience. The aim is to make the packaging more appealing and memorable, potentially improving patient adherence to medication regimens.

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Packaging materials, containers, and lids with metallic luster without using metal layers. The materials have a glitter print layer between the outer film and sealant containing pearl pigments, metal flakes, and a binder. The pearl pigment and metal flake ratio is 20:80 to 80:20. This provides a metallic appearance without metal layers, good color saturation, and reduced variation in color vividness compared to using just pearl pigments.

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Pigment composition containing isoindoline compounds for inkjet inks, paints, and packaging materials with improved dispersion, weather resistance, heat stability, and color fastness. The composition consists of two isoindoline compounds, one represented by formula (1) and the other by formula (2). The isoindoline compounds provide outstanding dispersion characteristics, weather resistance, and heat resistance compared to conventional isoindoline pigments. The composition is useful in inkjet inks, paints, and packaging materials like gravure printing inks, printed articles, and packaging materials where it enables high saturation colors with good storage stability and reduces fading over time in basic environments.

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Packaging material that suppresses the visibility of bright spots without using a metal layer. The packaging material includes a layer containing a white pigment, a layer containing metal flakes, and a plastic film in this order from the outer layer side.

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Developing food contact paints and coatings that are suitable for direct and indirect contact with food, and methods for printing and packaging using these inks. The paints contain organic dyes that meet specific migration limits to avoid unintended migration of toxic substances into food. The dyes are identified by extraction and analysis to ensure they don't contain banned substances. The paints have good thixotropy, adhesion, strength, and color gamut. The ink sets can have a wider color range than traditional paints with iron oxide pigments.

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