Surface Materials and Finishes for Packaging

Biaxially oriented polyester film with non-slip surface, transparency, and easy winding for use in packaging applications like food containers and top seals. The film has two layers, A and B, both containing polyethylene terephthalate (PET). The dynamic friction coefficient of the A layer surface, the friction coefficient between A and B layers, and the haze are controlled within specified ranges to balance slipperiness, transparency, and processability. The film's non-slip surface prevents stacked containers from collapsing when pressed together.

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Natural fiber-based transparent composites for food packaging that provide a sustainable alternative to fossil fuel-based packaging materials. The composites are made by UV polymerization of alkene and thiol-based monomers with natural fibers like jute. The UV radiation initiates crosslinking reactions to form a tightly bonded matrix around the fibers, resulting in high transparency (>90%) for packaging applications where visibility of contents is essential. The composites offer benefits of natural fiber composites with improved mechanical properties compared to neat polymer films.

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Paper-based packaging film with improved light barrier, moisture barrier, and recyclability for food products like butter and margarine. The film has a paper component, a polymeric film, a metallic flake layer printed on the polymeric film, and a white pigment layer between the metallic flake layer and the paper. The metallic flake layer provides light blocking, the white pigment layer enhances paper appearance, and the adhesive between the layers enables clean separation during recycling. The metallic flake grammage is kept low to balance barrier and recyclability.

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Low opacity, biodegradable, and heat-sealable paper made from cellulose fibers coated with a bio-based wax to reduce opacity and improve barrier properties. The paper has a base sheet of refined softwood cellulose fibers with a basis weight of 10-25 g/m2. It is coated with a transparency agent like a coconut-based wax and a heat-sealable coating like a thermoplastic starch or protein. The coated paper has opacity less than 35% and can be used for packaging without supercalendering.

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Laminated sheet and food packaging container with reduced hiding variation when filled with a high content of inorganic powder. The laminate sheet has a specific particle size distribution for the inorganic powder, with D20 of 2.0-3.4 μm, D50 of 4.8-7.6 μm, and D70 of 7.7-11.6 μm. The inner layer contains more inorganic powder than the outer layers. The thickness ratio of the outer layers is 2-20%. This reduces hiding powder variation during mass production. The laminate sheet can be used for food packaging containers.

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Stretched packaging film with improved quality and reduced environmental impact by using chemically recycled resin instead of material recycled resin. The stretched film contains a chemically recycled resin, which is made by converting discarded resin into monomers and then polymerizing them. This reduces foreign matter and odors compared to material recycled resin. The chemically recycled resin in the film is less likely to have gels, aggregates, or odors after heat treatment. This improves film quality and appearance when stretched.

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Embossed paper packaging material for twist packaging that does not require wax coatings. The packaging material has a base layer made of paper or cellulose that is embossed in sections to allow twisting without cracking. The embossing provides elasticity and flexibility for twist packaging without using wax coatings that can make recycling difficult.

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Multilayer film with excellent gas barrier properties, appearance, and recyclability, particularly for wide width films like 500 mm. The film has an outermost layer made of a specific resin composition containing EVOH with 20-50 mol% ethylene content and 90 mol% saponification, and 350-2000 ppm of polyvalent metal ions like Mg, Ca, Zn, Co, Mn. This improves slipperiness between surfaces during extrusion to reduce defects. The film also has inner layers of adhesive and polyolefin resins. The composition allows wide width films with good appearance, gas barrier, and recyclability.

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Base paper for metallized paper that provides metallized paper with excellent printability and processability in automatic packaging. The base paper has a resin layer on one side and a pigment coating layer on the other side. The pigment content in the coating is 50-85% by mass. The side with the pigment coating has an Oken smoothness of 300 seconds or more and a dynamic friction coefficient against stainless steel of 0.35 or less. This improves printability and reduces friction when metallizing the paper. The coating layer properties remain after metallization.

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Heat sealable film made from propylene derived from bionaphtha that has reduced environmental impact compared to petroleum-based films. The film contains at least 10% bionaphtha-derived propylene units relative to the film mass and 300-1000 ppm of phosphorus-based antioxidant. This composition reduces change in color, transparency, and mechanical properties compared to films with lower bionaphtha content. The film can be used for packaging materials and laminated structures.

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A manufacturing method for a stretch film with high transparency and slipperiness for packaging that provides ease of loading and unloading of packaged products. The method involves laminating separate layers of polyethylene (PE) and polypropylene (PP) films using a lamination machine. The resulting laminated film has the advantages of both PE and PP: high transparency from the PP layer and slipperiness from the PE layer. This provides a wide range of packaging films that combine the benefits of transparency and slipperiness for improved product visibility and easier handling compared to using just PE or PP alone.

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Packaging container with clear markings and reduced labels by laser marking a core layer containing titanium dioxide. The container is made from a resin sheet with a core layer containing titanium dioxide. Laser marking using carbon dioxide irradiates the titanium dioxide to create black markings on the container. The contrast between the white core and black markings makes the markings stand out. Laser marking instead of labels reduces label usage. The core layer covered by a thin transparent skin layer prevents surface damage from laser irradiation.

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Biaxially stretched polyamide film for packaging applications that has reduced thickness while maintaining good transparency and wrinkle resistance. The film has a thickness of less than 12 microns, with standard deviations below 0.8 microns in the machine and width directions. It also has low friction coefficients below 0.9 and a haze value of 7.0% or less. The film contains polyamide 6 as the main component, with preferably 60-98% polyamide 6 content. The reduced thickness, low friction, and low haze properties allow thinner films with good transparency and wrinkle suppression for packaging applications.

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A paper food packaging box that increases the perceived quality of packaged food by using a combination of brown and white kraft paper. The outer layer is made of brown kraft paper, while the inner layer is made of white kraft paper. This provides a contrast that elevates the perceived quality of the packaging compared to using just brown kraft paper. The two layers are laminated together using adhesive and heat fusion.

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Digital printing on the inside of flexible packaging to add unique codes, promotional content, or varying patterns on the inner layers of flexible packaging using a separate digital printing process before lamination. This involves digitally printing on the laminated film rolls before combining them in the lamination process to create the final flexible packaging. A compensator roll is added to the lamination machine to adjust for the thickness variation from the digital printing. This allows precise, customizable inner printing that can vary per package while remaining regular and safe for products.

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Product packaging material with high paper content and transparency to reduce plastic use. The packaging has a pouch formed between a main sheet of unlaminated paper and a transparent front sheet made of either film or cellophane. They are bonded together using water-based adhesive. The paper weight in the packaging exceeds 50% or 60% to increase recyclability. The transparent front allows product visibility while reducing plastic content compared to fully plastic packaging.

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Laminate sheet, container, and food packaging with improved appearance and formability after heat treatment. The laminate sheet has four layers: inner, intermediate, first outer, and second outer. The second outer layer contains a polyester or polycarbonate resin with a high deflection temperature. This provides good formability while maintaining transparency after heat treatment. The second outer layer thickness is 0.5-8% of the total sheet. The laminate sheet can be used to make containers that retain their appearance after boiling. The containers can be filled with food for sterilization while maintaining good appearance.

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Recyclable, reusable, and visually appealing packaging cushion made from recycled corrugated cardboard that overcomes the limitations of traditional packaging materials like air cushions and styrofoam. The packaging cushion is created by compactly rolling and compressing used corrugated cardboard boxes into a dense, high-density roll. This roll is then cut into thin, flat sheets that are stacked and compressed into a compact cushion shape. The resulting cushion provides excellent shock absorption and filling properties without the issues of leakage, puncture, static electricity, or contamination associated with air cushions and styrofoam. It also has a clean, uniform appearance compared to shredded cardboard. The compact cushion shape allows efficient storage and transportation of the cushion between shippers and recipients. The cushion can then be recycled or reused by compacting it back into a roll.

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Packaging material with improved light-blocking, adhesion, and appearance for preventing light degradation of packaged products. The material has a layered structure with a base, white printed layer, light-blocking printed layer, adhesive, and sealant. The white and light-blocking printed layers contain a specific urethane resin with a polyester polyol derived from sebacic, succinic, or dimeric acid. This resin improves adhesion and appearance compared to conventional light-blocking inks.

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Packaging film for articles that can be stretched easily with a small force, has excellent elasticity, and maintains transparency after stretching. The film has an intermediate layer made of a thermoplastic elastomer and surface layers made of a propylene-based elastomer. The propylene-based elastomer is a copolymer of propylene and ethylene. The total content of the propylene-based elastomer in the entire surface layer is 45-95 mass%. The total content of ethylene units in the propylene-based elastomer relative to the entire surface layer is 1-7 mass%. This composition allows the film to stretch easily with low force and maintain transparency after stretching.

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A packaging box for perfume bottles that provides improved protection and presentation. The box has a main compartment for holding the perfume bottle, as well as additional compartments for storing accessories like perfume pumps and atomizers. The box is made of materials like cardboard, paperboard, or plastic. It can be designed with a hinged lid or a sliding drawer mechanism for opening. The box may also have a handle for carrying. The additional compartments allow better organization and protection of the perfume and accessories during shipping and storage.

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Water-resistant paper with improved printability, condensation resistance, and water resistance. The paper has a water-resistant layer on one side and an undercoat layer on the opposite side. The undercoat layer has specific smoothness and water absorbency. This allows the paper to have good print quality, prevent condensation, and still be water-resistant on the opposite side from the water contacting surface. The undercoat layer contains latex and pigment, and the water-resistant layer contains polyolefin or acrylic resins. The paper is suitable for packaging containers like cups that have both printed surfaces and contact with liquids.

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Custom product packaging using molded foam articles made from biodegradable polylactic acid (PLA) that can be adhered to various surfaces for customization without waste. The PLA foam can be adhered to substrates like metal, film, cardboard, and plastic using heat and pressure. This allows attaching foam directly to irregular surfaces, filling gaps, and preventing movement compared to separate foam padding. The PLA foam adhesion eliminates the need for tape or wrapping to secure foam, reducing packaging waste. The foam-substrate bond is superior to traditional foam-substrate bonds due to PLA's properties.

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Cover tape for packaging electronic components that provides improved visibility of the components when peeled off for mounting. The cover tape has a specific heat transition behavior measured by DSC. It has a peak in the range of 100-103°C when heated and cooled. This peak location reduces haze by preventing internal molecular chain bias that affects light straightness. The cover tape also has an antistatic layer to prevent charging and adhesion of dust.

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Packaging box with 3D cards that change appearance based on viewing angle to make the box more visually appealing and attractive to consumers. The box has a transparent body made by folding and joining four side panels and two cover panels. Inside the box, there is a 3D card with multiple patterns that creates a double-changing effect when viewed from different angles. This adds visual interest and enhances the packaging value compared to plain boxes.

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Sliding film, laminate, and packaging container with improved sliding properties against deposits while maintaining transparency. The sliding film is made by co-hydrolyzing or condensing an alkyltrialkoxysilane with 1-14 carbon alkyl group and tetraalkoxysilane. The sliding film has excellent sliding properties against deposits like oil adhesion in packaging containers. The sliding film can be applied to laminates and packaging containers by coating it onto a substrate and allowing it to react and cure. The coating process involves dissolving the silanes in a solvent, applying it to the substrate, and removing the solvent.

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Label packaging material with improved printing quality when a shielding layer is used. The label has a base material with a shielding layer printed on one side to hide certain areas. Designs are then printed on the shielded side using letterpress. To prevent overemphasized edges, a halftone layer is printed around the designs using the same ink color. This prevents excessive printing pressure and improves printing quality.

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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 packaging element and container for luxury and premium products that allows complex shapes while reducing environmental costs. The packaging element is made from wet-formed paper pulp instead of plastic. It has a molded seat shaped to fit the product. The paper pulp is pressed at temperatures between 20-300°C to create the molded seat. The paper element can be used in foldable or rigid packaging, covered with special materials, or printed. This avoids the energy-intensive drying step of thermoforming and allows complex shapes while using paper instead of plastic.

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Producing a printable, multi-layer liner web for packaging with improved print quality and sustainability. The method involves making a printable packaging liner with a white, printable top layer by combining bleached and unbleached pulps. The process is: 1) Make a bleached pulp for the top layer. 2) Make an unbleached pulp for the bottom layer. 3) Form the top layer from the bleached pulp. 4) Form the bottom layer from the unbleached pulp. 5) Assemble the layers into the final liner web. The unbleached bottom layer prevents contaminants from transferring to the top layer, maintaining white print quality.

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Method to manufacture laminated packaging material for liquid food containers with improved print quality and product integrity. The method involves inkjet printing on paperboard, drying with IR radiation, and an absorption surface on the backside to minimize moisture loss from the paperboard itself. This prevents cracking and delamination issues. The IR power is adjusted based on paperboard moisture levels.

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Transparent multilayer film for use in packaging applications like food containers where it is heat sealed to a bottom material. The film has an easy-peel layer containing a hot melt adhesive and an incompatible component. This configuration provides a lid that peels cleanly from the bottom material without delamination or stringing when opened. The film also has low haze for transparency in the package.

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Transparent multilayer film for lids of deep-drawn food packages that prevents peeling off during manufacturing. The film has an easy-peel layer containing a hot melt adhesive. This layer has high initial and long-term seal strength when heat-sealed with bottom materials like PET. This prevents peeling of the lid from the bottom during deep-drawing and cutting steps. The film also has low haze for clarity. The easy-peel layer contains antifogging agents.

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Recyclable polyethylene film for packaging with improved printability, durability, and processability. The film has a multilayer structure with separate printing and sealing layers. The printing layer contains a mixture of LLDPE, LDPE, and HDPE resins. The sealing layer contains LLDPE, MDPE, and HDPE resins. The melting points of the outermost printing layer and sealing adhesive layer are matched. This allows high-speed bundling and heat sealing at low temperatures without damaging the film. The film also has properties like puncture resistance, tensile strength, elongation, haze, and hot tack balance. The layered structure improves print quality, reduces defects, and enables recyclability compared to heterogeneous composite films.

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Method for manufacturing laminated packaging material webs for liquid food containers with improved ink drying and moisture control. The method involves inkjet printing a decor layer on a paperboard layer, then drying it using a combination of infrared radiation and hot air. The ratio of IR to hot air is adjusted to maintain the paperboard moisture level while fully drying the ink. This prevents over-drying cracks in the paperboard while ensuring complete ink drying.

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Heat-shrinkable film for packaging applications like labels on containers that provides excellent balance of rigidity and shrinkage properties. The film has a polyester resin composition with at least one diol residue derived from 1,3-propanediol. The film has specific properties like high ring crush strength, low modulus orthogonal to shrinkage, low tensile strength orthogonal to shrinkage, and low haze. These properties enable the film to have good rigidity for thin films while still shrinking well on objects and avoiding wrinkling.

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A packaging bag for displaying foods in stores that is environmentally friendly by using materials like glassine paper instead of synthetic resins. The bag has a glassine paper section for transparency to show the contents and a separate section made of more breathable paper. The two sections are heat sealed together to form the bag. This allows air permeability and visibility while avoiding synthetic films. The bag can be a bottom gusset or three-sided style.

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Tower packaging box structure for products like wine bottles that provides improved protection and a unique appearance. The box is made up of multiple interlocking panels arranged in a tower shape. The panels have features like protrusions, cutouts, and angles that create a distinctive look. The box also has interior wall panels to cushion the contents during transportation. This design improves impact resistance compared to a simple square box by providing better buffering and absorption of forces.

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Base paper for metallized packaging that provides vapor barrier properties and allows for high quality printing and automated packaging processing. The paper has a pigment coating on one side with specific pigment content (50-85%) and smoothness (Oken type smoothness >300 seconds) to enhance printability and processability. The other side has a resin layer for metallizing. The coating layer properties enable good print quality and avoids issues like ink trapping. The smoothness prevents ink streaking. The low coefficient of friction against stainless steel aids in automated packaging.

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A packaging box for noodles that aims to improve the presentation and convenience of noodle packaging. The box is designed to provide better protection and preservation of the noodles, while also making it easier to open and close. The box may have features like a resealable closure, stackable design, vented side panels for aeration, and clear windows to view the noodles inside. The goal is to create a more functional and attractive packaging option for noodle products.

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Food container packaging film that improves visibility, prevents moisture buildup, and allows easy separation and recycling of the packaging. The film is made of two PET layers laminated together, with a coating on the outer layer. The inner PET layer contacts the food. The coating on the outer layer prevents fogging and moisture buildup. The coating can be a polymer solution containing compounds like ethylene glycol, 1,1,1-trimethylolpropane, 1,4-butanediol, isophthalic acid, terephthalic acid, 2,2-dimethyl-1,3-propanediol, diethylene glycol, alkyl sulfosuccinate, cyclohexyl diesters, 1,2-propanediol, talc, and silicon dioxide.

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An egg roll packaging cover with improved design to enhance its appearance and functionality. The cover is used to securely seal and protect egg rolls during transportation and storage. The new design aims to provide better positioning of the cover to ensure proper sealing and prevent leakage. It also aims to improve the visual appeal of the packaged egg rolls. The cover has features like tabs, slots, and indentations to aid in positioning and sealing. It may also have design elements like patterns, textures, and colors to make the packaged egg rolls look more attractive.

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Eco-friendly packaging material with improved tensile strength and opacity made from natural and biodegradable materials. The packaging material is manufactured by melting and mixing biopolymers like polylactic acid, polybutylene succinate, and polypropylene terpolymer with additives like cuttlefish bone powder, cuttlefish mucus extract, activated carbon, gelatin, and mussel mucus extract. The materials are spun into nanofibers, layered, and heat-sealed to create a double film structure. This improves tensile strength and opacity compared to existing biodegradable plastics.

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