Carbon Black Systems for UV Protection

Easy-print packaging sheet made by flash spinning with improved properties like burst resistance, light shielding, and printability compared to traditional extruded sheets. The sheet contains a small amount of carbon nanoflower packaging material dispersed in the polymer. The nanoflower material fills gaps in the fiber texture, reduces motion between polymer chains, and improves burst resistance. It also fills gaps in the texture surface, making it smoother for printing. The nanoflower material content is optimized to balance properties like smoothness, drape, burst index, and light shielding.

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Easy-print packaging sheet made by flash spinning that has improved properties like burst resistance, light shielding, and printability compared to traditional rolled sheets. The key is using a carbon nanoflower packaging material in the sheet composition. The carbon nanoflower material improves burst resistance by filling gaps in the fiber texture, reduces light transmission for better light shielding, and improves smoothness for better printing. The carbon nanoflower material content is optimized to balance these properties.

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Preparing a grass-derived multifunctional nanomaterial film for food packaging that enhances mechanical properties, water resistance, UV protection, oxygen scavenging, and antimicrobial properties. The film is made by incorporating nanomaterials extracted from dried darbha grass, like carbon dots, cellulose nanofibers, and silver nanoparticles, into PVA films. The grass nanomaterials improve the film's performance compared to standard PVA films.

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Contact lens packaging container and product that blocks light to protect the contents. The container is made by dispersing toner particles into the plastic material. This provides light blocking properties without using colored plastic. The toner dispersal can be done in multiple steps involving mixing and pelletization. The toner concentration and plastic material affect the light blocking rate. The container has at least 20% light blocking in the visible spectrum. This protects sensitive components like active ingredients in the contact lenses and buffer solution.

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Active biodegradable plastic packaging film made from pear waste that has improved mechanical properties, UV barrier, oil barrier, and biodegradability compared to conventional plastics. The film is made by combining mashed pear peel and pulp extract, starch solution, and glycerol. The pear waste acts as a filler to enhance properties, starch as a crosslinking agent, and glycerol as a plasticizer. The film is cast and cured to create a biodegradable packaging material with functional properties like antioxidant activity and moisture control. The film can be used in food packaging, pharmaceuticals, and other applications requiring sustainable and active packaging solutions.

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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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Easy-to-print packaging sheet made by flash spinning process that provides better printing, burst resistance, bending, and light-shielding properties compared to traditional sheets. The sheet contains carbon nanoflower wrapping materials with copper chloride and magnesium chloride. The nanoflowers improve printing by filling gaps in the fibrous structure. The copper chloride provides burst resistance and the magnesium chloride provides antimicrobial properties. Flash spinning at temperatures around 200°C forms the sheet. The high temperatures prevent agglomeration of the nanoflowers. The sheet has properties like drape coefficient of 78-92%, burst index of 8-15 kPa·m2/g, and light-shielding rate of 85-95%.

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Packaging material for light-sensitive items that has a light barrier over holes to prevent light degradation. The packaging material has a hole covered by an ink layer containing carbon black and/or titanium dioxide. This ink provides a light barrier over the hole to prevent light transmission. The ink can be applied before or after packaging processing.

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Method for manufacturing food packaging material using graphene-containing pellets to improve shelf life, strength, and antibacterial properties. The method involves blending graphene with polyethylene (PE) pellets, extruding the blended pellets into film, and using the graphene-containing PE film for food packaging. The graphene prevents light transmission, reduces oxygen permeability, and enhances antibacterial properties to extend food freshness and quality.

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A method to manufacture food packaging containers that extend shelf life by blocking light transmission and improve strength and antibacterial properties using graphene. The method involves blending graphene with polyethylene (PE) at 0.01-10% by weight, extruding the graphene-PE blend into pellets, molding the pellets into containers, and cooling them. Using reduced graphene oxide (rGO) in the blend enhances functionality. The graphene-PE containers block more light and have better strength and antibacterial properties compared to regular PE containers.

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Packaging material for photosensitive products with light barrier holes that prevent light degradation without using aluminum foil. The packaging has holes covered by a thin layer with carbon black and titanium dioxide that provides a light barrier. This allows light-sensitive items to be packaged without exposing them to light through the holes. The barrier layer on the holes has lower light transmission than the carton material itself. The barrier layer thickness can be adjusted based on product sensitivity.

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Packaging material for light-sensitive products that has a light barrier over orifices like straw holes to prevent degradation. The packaging has a layer covering the hole with a paint containing carbon black or titanium dioxide to block light transmission. This light barrier can be applied to the exterior of the second layer covering the hole. This allows mass production of packaging with light barrier orifices using conventional equipment without adding aluminum foil. The paint can be applied before or after the wrapping is made.

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Light-shielding printed matter with high light blocking properties for packaging applications like bags and containers that replaces aluminum foil. The printed matter has a composite light-shielding layer made of laminated ink layers on one side of the base material. The light-shielding layer contains both a white ink layer with specific composition and thickness (0.5-10 µm) and a gray ink layer with specific composition and thickness (0.5-5 µm). The white ink contains titanium dioxide, vinyl-acetate/vinyl chloride copolymer, and polyurethane with specific resin content ratios. The gray ink contains titanium dioxide, carbon black, vinyl-acetate/vinyl chloride copolymer, and polyurethane with specific resin and pigment ratios. This composite light-sh

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Packaging material for light-sensitive products that has improved light protection for openings like straw holes. The packaging material has layers including a cardboard base, a gas barrier, and an outer layer. An opening penetrates the cardboard but is covered by the outer layer. To further block light, a paint layer is applied over the outer layer around the hole. The paint contains carbon and/or titanium dioxide to make it opaque. This custom light protection around the opening restores the light barrier for light-sensitive products packaged in these materials.

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Packaging material for medical supplies, food, and infusion solution bags that provides light blocking, oxygen barrier, pinhole proofing, and easy opening. The packaging material has layers of base, first lamination, barrier, second lamination, and sealant. The sealant contains titanium oxide or carbon black. The barrier layer has a thin aluminum oxide coating. This structure provides light blocking, oxygen barrier, and pinhole proofing. The thin aluminum oxide layer allows a thin barrier layer without sacrificing oxygen barrier. The titanium oxide/carbon black in the sealant prevents pinholes. The thin barrier layer prevents thickening and hardening.

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A packaging film for crops that reduces discoloration and decay of fruits and vegetables during storage. The film contains graphene and oxidized germanium nanoparticles dispersed in the polymer matrix. The graphene blocks UV light to prevent oxidation and the germanium nanoparticles emit far infrared rays to activate metabolism. This composite film provides an alternative to preservatives and maintains crop freshness.

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Packaging film for crops that uses graphene to reduce oxidation and decay of produce during storage and transportation. The film contains a small amount of graphene dispersed in the polymer matrix. The graphene blocks ultraviolet light to prevent oxidation, emits far-infrared rays to activate plant cells, and reduces oxygen permeation. This keeps produce fresher for longer compared to conventional packaging films.

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Packaging material for light-sensitive products with a hole covered by a light barrier to prevent light degradation. The barrier is an ink layer on the covering layer that partly covers the hole. The ink is essentially non-transparent to light to restore the hole's light barrier. The ink can be carbon black or a carbon black/titanium dioxide mix. The barrier prevents light from penetrating the hole and reaching the product inside.

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Opaque potato packaging to prevent light exposure and reduce solanine levels, making potatoes safer for consumption. The packaging is made of materials like paper, jute, composites, or opaque plastic that block UV rays. This prevents photooxidation and reduces solanine concentration, which can become harmful when potatoes are exposed to light. The opaque bags protect the potatoes from sunlight during storage, transport, and retail to maintain quality and safety.

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High heat resistance, light blocking, and recyclability in films and packaging objects for food packaging. The films have multiple shading layers containing polyolefin with carbon black and titanium oxide loadings of 0.1-20% and 0.1-30% respectively. This allows high light blockage while maintaining sealing properties. The shading layers are made of polyolefin like ethylene copolymers or propylene-ethylene block copolymers. The lower carbon black and titanium oxide loadings compared to traditional shading layers prevent exfoliation and maintain seal integrity after retort treatment.

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