Color Enhancement Systems for Package Design

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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Environmentally friendly packaging material that is biodegradable and/or recyclable. The packaging has a carrier substrate with coating layers. The coating layers are applied in a specific sequence: first coating, second coating directly on the first, and optionally a third coating indirectly on the second. The coating layers contain binders, pigments, and additives like polysaccharides, surfactants, and preservatives. The carrier substrate can be made of cellulose fibers. The coating layers have specific weight percentages of components. The packaging material can be produced using specific coating colors with viscosities suitable for industrial machines. The packaging meets standards like EN 1186 for food safety.

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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 bilayered food packaging film that can detect freshness and spoilage of food items. The film has an inner layer made of electrospun nanofibers loaded with a pH-sensitive bio-colorant extracted from plants. The outer layer is a plasma-treated clay-reinforced LLDPE film. The inner layer changes color in response to vapors released by spoiled food due to the pH-sensing bio-colorant. The transparent outer layer allows visual inspection of the color change. The clay-reinforced LLDPE provides enhanced barrier properties.

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Smart food packaging film containing modified oat starch, betalain, and cellulose nanofibers that can monitor food spoilage without using synthetic pigments. The film is made by extracting starch from oats, treating it in subcritical water, extracting betalain from beet peels, mixing with cellulose nanofibers, and drying. The modified oat starch has higher solubility and lower crystallinity compared to natural oat starch, allowing better dispersion with betalain. The cellulose nanofibers reduce betalain temperature sensitivity. The film contains betalain instead of synthetic pigments for color without harming food.

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Blow molded plastic bottle with both gas barrier and light blocking properties for beverage containers. The bottle is made of synthetic resin like PET and has a vapor deposited film on the inner surface for gas barrier. The bottle is also colored with a dye to block light. This allows the gas barrier film to work effectively since the dye prevents protrusions on the surface that would disrupt the film. The dye can be any color and the vapor deposition technique can be diamond-like carbon (DLC) or other gas barrier coatings. The biaxial stretch blow molding process is preferred.

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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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Food packaging that changes color when it comes into contact with harmful bacteria, helping consumers easily identify spoilage. The packaging contains an enzyme that reacts with specific harmful bacteria and turns the packaging a certain color. It also has added calcium hydroxide to become hazy when carbon dioxide is released from spoiling food. The packaging material is made from eco-friendly corn-based plastic.

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Packaging for fresh products like fruits and vegetables that allows visual assessment of freshness using temperature-sensitive pigments. The packaging material, like plastic paper, contains temperature-sensitive pigments like zion ink that change color when the temperature inside the packaging reaches a certain point. This allows consumers to see the color change with their naked eye to determine if the product is still fresh. The pigments change color below 10°C and revert back above 10°C. This provides a visual indicator of the temperature inside the packaging, which can indicate if the product is still fresh or has gone bad.

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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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Eco-friendly ink composition and manufacturing method for packaging materials that reduces volatile organic compounds (VOC) while improving printing quality and durability. The ink contains pigments, binder resins, and solvents like alcohol and methyl acetate. The alcohol-based solvents replace VOC solvents. The binder resin is alcohol-soluble. The ink is printed using gravure printing. After printing, an adhesive layer is applied and the materials are laminated. This prevents solvent residue in the printed layer. The ink composition has reduced VOCs, improved color development, and faster drying compared to alcohol-free inks.

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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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A process for manufacturing rigid cardboard packaging like boxes with improved reliability in glue application and detection. It involves using an adhesive composition containing optical brighteners like pyranine, riboflavin, vitamin E or vitamin A. These compounds are added to the glue to improve contrast between the glue lines and the cardboard substrate containing optical brighteners. This allows better detection and verification of the glue placement using UV lighting and cameras. The brighteners in the cardboard absorb UV and emit visible light, making the glue lines stand out more.

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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 and product that blocks light to protect the lenses and solution inside. The container is made of a plastic material with a toner dispersed in it. The toner provides light blocking properties without changing the container color. The toner concentration and container thickness are optimized to achieve a minimum 20% light blocking rate in the visible spectrum. This prevents degradation of lens components and allows visibility of the lenses and solution inside.

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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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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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