Printing Inks for Package Graphics

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.

Source

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.

Source

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.

Source

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.

Source

Eco-friendly packaging film that does not contain harmful substances like VOCs and formaldehyde. The film has a layer printed with an ink containing a specific composition of polymers, pigments, emulsifying wax, coco betaine, and ethanol solvent. The ink is free of organic solvents like toluene and xylene commonly used in conventional inks. This allows the film to be printed using eco-friendly ink without harm to human health or the environment. The ink composition provides good print quality and dispersibility of pigments. The film structure is a polymer film with the printed ink layer sandwiched between adhesive and another polymer film.

Source

Packaging material, containers, and lids with metallic luster without using a metal layer. The packaging material has a plastic film, pattern layer, and sealant layer. The pattern layer contains a glittering printed layer and a chromatic underlayer. The glittering printed layer has metal flakes in the binder resin. The chromatic underlayer has colored particles. This provides metallic luster without large metal flakes. The chromatic underlayer enhances the luster and narrows the angular distribution of reflected light. It also improves microwave resistance compared to metallic flakes alone. The containers and lids made from this material have attractive metallic appearance without metal layers.

Source

Pigment composition for inks, coatings, plastics, packaging, and printing applications that provides improved dispersibility, weather resistance, heat resistance, storage stability, and color fastness. The composition contains isoindoline pigments represented by formulas (1) and (2) with specific substituents. The isoindoline compounds can be synthesized together or mixed afterward. The composition can be used in water-based inks, coatings, plastics, packaging, and printing materials to improve properties compared to conventional isoindoline pigments.

Source

Safe black ink for microwaveable packaging that does not ignite or char when exposed to microwave energy. The ink contains nitrocellulose resin, a solvent, polyurethane resin, and a carbon black pigment with specific properties. The carbon black pigment has a low imaginary permittivity below 3 and a surface oxygen content between 1.5-2.5 weight percent. This formulation enables printing true black ink on microwaveable packaging without safety concerns when heated in a microwave.

Source

Black ink formulation for microwave-safe food packaging that provides safe printing without ignition or burning when exposed to microwaves. The ink contains nitrocellulose resin, a solvent, a polyurethane resin, and a specific type of carbon black pigment with low imaginary permittivity (<3) and surface oxygen content (1-3%) to prevent microwave hazards like ignition and arching.

Source

A pouch for containing food or beverages that has improved white ink hiding power and a manufacturing method that reduces the possibility of discoloration or discoloration without increasing cost. The pouch has a three-layer structure with a CPP film in contact with the contents, a nylon film on top, and a PET film on top. The adhesive between the CPP and nylon films contains cured white ink. The adhesive between the nylon and PET films also contains cured white ink. This configuration allows hiding the ink color from the contents while preventing discoloration of the pouch over time.

Source

Packaging material with enhanced metallic luster without using metal layers. The packaging material has a plastic film, a brilliant printing layer containing a brilliant pigment and binder resin, and a sealant layer. The brilliant printing layer satisfies conditions for diffused light reflection and specular light ratio. The conditions are: L* (lightness) calculated from diffused reflection > 40, and G60/L (specular/diffused ratio) < 1.00. The brilliant printing layer provides a visual metallic luster from all viewing angles without specular reflection.

Source

Laminated packaging material for liquid food products that allows printing dark colored flexographic ink without affecting the integrity of the packaging at high speeds. The ink composition is formulated with color bases mixed at ratios to absorb less than 80% of the tungsten light spectrum. This prevents excessive heat absorption and softening of the packaging when printed at high speeds. The ink also has low color difference (DE2000) compared to a black reference. The lower absorption and color difference prevents drying issues when combining flexographic and digital printing on the same packaging.

Source

Packaging material for microwave oven use that provides a metallic luster appearance without using metal layers or high-brightness aluminum pastes. The packaging material has a laminated structure with an outer plastic film, an inner glossy printing layer containing pearl pigments, and a sealant layer. The pearl pigments, like white, interfering, and colored pearls, create a metallic luster without microwave reflection issues. A black background layer can be added to the printing layer. The pearl pigment ink solvent has a low boiling point. This packaging material is suitable for microwave ovens as the pearl pigments avoid sparks and holes compared to metals.

Source

Laminated retort packaging material that can be laser printed without damaging the base film. The packaging material has a laminated structure with a base material, pattern printing layer, printing base layer, barrier layer, and sealant layer. The printing base layer is a white ink that can be printed by laser light. Only the surface of the printing base layer is used as the laser printing area, avoiding damage to the base film. This allows laser printing on the laminated packaging material with clear, visible lines. The white ink has metal oxide for discoloration when irradiated with laser light.

Source

Process for creating laser markable packaging using offset printing with special inks, varnishes, and dispersion lacquers. The process allows embedding high resolution machine readable elements like serialization codes and anti-counterfeiting features directly into the packaging during printing. The laser markable inks, varnishes, and lacquers contain infrared dyes that form visible marks when lasered. Multiple dyes with distinct IR absorption maxima are used in separate inks to enable multicolor marking. This allows hidden laser markable areas to be created inside the printed image without labels or additional steps.

Source

A labeling method for substrates like packaging materials that provides improved color stability and avoids discoloration when covered with a thermoplastic polymer layer. The method involves coating the substrate with an ink containing a leuco halochromic dye and a thermoactivated acid generator (TAG). The ink is then covered with a thermoplastic polymer layer. This protects the ink and prevents discoloration when the polymer is melted during packaging processes. The leuco dye converts to a colored form when heated, enabling marking.

Source

Printed matter, like packaging for food, that has improved ink adhesion to prevent delamination. The packaging material has recessed areas on the surface that engage with the ink film to provide mechanical bonding. This strengthens the adhesion force between the ink and packaging. The recessed areas contain additives like food colorants to match the ink composition. The additives can be existing food additives, designated for ink use, or general additives. The recessed areas are formed by containing the additives in the packaging material during manufacture.

Source

Printing ink composition for food packaging films that contains an essential oil/haloysite composite material. The composite has essential oil filled inside the nanotubes of halloysite clay. This allows gradual release of the essential oil to provide insect repellent and antibacterial effects on the food packaging. The ink also has pigments, a binder resin, and solvent. The composite and pigments provide color while the binder adheres to the film. The ink can be printed on food packaging films using gravure printing to create antibacterial layers on the packaging.

Source

Composition for providing identifying packaging with fluorescence that does not easily replicate. The composition includes a base material like resin, and an identifying additive containing an alkaline earth metal compound like calcium carbonate, and a fluorescence activator with inorganic impurities like manganese, molybdenum, copper, uranium, thorium, etc. The additive emits fluorescent light when irradiated, such as UV, and can have identifying characteristics like different color or intensity compared to the background. This allows authentication of products by checking the fluorescent response. The impurities prevent easy copying of the fluorescent effect compared to traditional optical brighteners. The composition can be used in labels, packaging, coatings, papers, inks, etc.

Source

Laminated packaging stick with laser printed images that allows efficient and accurate printing of additional information on the stick. The stick has a base film, a printing layer with a white ink base, and a coloring ink layer. The coloring ink contains a bismuth compound that develops color when irradiated with low-power lasers. By laser printing on the coloring ink layer, it creates a visible image without damaging the base film. The bismuth compound provides a laser color-developing effect. The stick also has sealant layers on the outer surfaces.

Source