Titanium Dioxide in Package Materials

Three-layer packaging material for photovoltaic modules that improves efficiency and reduces cost compared to conventional white EVA or POE. The three-layer structure has a melt-blown layer, a reflective adhesive layer, and a matrix adhesive layer. The reflective adhesive layer contains titanium dioxide (TiO2) with a mass content less than 12%. The matrix adhesive layer also has TiO2 less than 12% and filler content between 10-40%. The lower TiO2 content in the inner layers reduces cost and risk of whitening during lamination. The reflective adhesive layer provides high reflectivity. The lower TiO2 content in the inner layers also reduces whitening risk. The lower filler content in the matrix adhesive layer improves flexibility compared to high filler content. The reflective

Source

A photo-oxygen barrier for packaging materials that protects light and oxygen sensitive products like food, beverages, medications, and cosmetics. The barrier is a composite material containing 1-65% of a light-blocking composition, 1-30% of an active oxygen absorber, and 5-98% of a base material. The light-blocking composition can contain titanium dioxide, aluminum powder, and carbon black. The active oxygen absorber contains cobalt. The barrier can be made by melt extrusion or mixing the components in a base material.

Source

White masterbatch for yogurt packaging that maintains a pH of 7.0 to prevent acidic or alkaline packaging from affecting yogurt quality. The masterbatch contains 50-80% rutile titanium dioxide, 0.1-13% compound acid absorber, and 19.6-49.84% low density polyethylene. The titanium dioxide is pH 7.0, the polyethylene is pH 7.0, and they are dispersed using high shear mixing to prevent agglomeration. The compound acid absorber neutralizes organic acids generated during processing to stabilize the pH.

Source

Packaging for flexible photovoltaic modules that provides lightweight, flexible, and highly transparent packaging with improved water resistance, wear resistance, and aging resistance compared to existing glass-based packaging. The packaging layers include a wear-resistant layer, weather-resistant layer, adhesive layer, water-blocking layer, and support layer stacked sequentially. The wear-resistant layer has a surface hardness of 1H to 3H. The water-blocking layer is an inorganic oxide like TiO2, SiO2, or Al2O3. The weather-resistant layer is PVDF, ECTFE, or PVF. The adhesive layer is polyurethane, organosilicon, or polyacrylic. The support layer is polyester film like PET, PMMA, PC, PBT, PP, or PE.

Source

Light-shielding modified plastic for cosmetics containers that reduces the amount of titanium dioxide needed to block light compared to traditional plastics. The modified plastic contains amorphous copolyesters, a styrene-methacrylate block copolymer dispersant, encapsulated titanium dioxide particles, and optionally zinc dioxide and acrylic acid-containing polymers. The encapsulation improves light shielding efficiency while reducing the required titanium dioxide level.

Source

A multi-layer packaging material for photovoltaic modules that reduces cost while maintaining performance. The packaging material has a micro-crosslinked layer sandwiched between a reflective adhesive layer and a supporting adhesive layer. The micro-crosslinked layer has a pre-crosslinking degree of 10%. The reflective adhesive layer contains 2-30% titanium dioxide and the supporting adhesive layer has 10-40% filler, with both layers having lower than 12% titanium dioxide. This reduces the total titanium dioxide in the stack. The micro-crosslinked layer thickness is 5-38% of the total. This structure allows lowering the cost of the packaging material compared to using titanium dioxide in all layers.

Source

Packaging bag with rough surface to prevent bacterial growth, slipping, and durability issues. The bag has a composite coating layer containing modified nano-titanium dioxide and oyster shell powder. The modified nano-titanium dioxide has silver ions and coupling agents to improve dispersibility and reduce agglomeration. The oyster shell powder absorbs water and hardens. This coating layer adsorbs bacteria and inhibits growth with the silver ions. The rough surface prevents bacterial adherence and slipping. The composite coating improves durability compared to smooth coatings.

Source

Packaging material to protect light-sensitive substances like food from photooxidation by enhancing their light protection. The packaging material contains specific ratios of calcium carbonate and titanium dioxide fillers in the polymer matrix. The key finding is that using a specific ratio of calcium carbonate (CaCO3) to titanium dioxide (TiO2) in the packaging material provides better light protection compared to using only TiO2 or only CaCO3. The preferred ratio is 4.5:1 (CaCO3:TiO2) for light protection factors (LPF) greater than 60. This ratio provides unexpectedly high LPF values compared to using only TiO2 or only CaCO3.

Source

Modified polyvinyl chloride (PVC) material that resists UV degradation and discoloration, and maintains mechanical properties when exposed outdoors. The modification involves pre-mixing titanium dioxide, carbon black, and a titanate coupling agent in a specific ratio, then dispersing the mixture in PVC. This pre-treatment improves dispersion and synergy between the UV absorbers to enhance UV resistance without degradation, aging, or property loss.

Source

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.

Source

Inorganic coated modified titanium dioxide for plastic filler that improves weather resistance by reducing photocatalytic activity. The modification involves coating the titanium dioxide particles with an inorganic layer. This separation of the particle surface from the plastic matrix reduces interaction between the plastic and the titanium dioxide, decreasing photocatalytic reactions that degrade the plastic. The coated titanium dioxide filler is useful in plastics applications where weather resistance is important.

Source

Sun-proof plastic woven bag for protecting packaged items from UV degradation when exposed outdoors. The bag contains specific additives like zinc oxide, titanium dioxide, light stabilizers, tackifiers, and stiffening agents that absorb or scatter UV light to prevent photodegradation of the bag and the contents. The composition is 100 parts polypropylene, 50 parts linear low-density polyethylene, 20 parts polystyrene, 10-15 parts zinc oxide, 8-15 parts titanium dioxide, 25-30 parts light stabilizer, 8-15 parts tackifier, 12-18 parts bleaching agent, and 5-12 parts antioxidant.

Source

Special bagging for mangoes that allows light transmission to promote proper color development while preventing pests and diseases. The bag is made of paper with internal coatings of chitin fiber, bamboo pulp fiber, nano titanium dioxide, and drug coating. The drug coating contains anti-fog resin, mold inhibitors, insecticides, and antibacterials. The bottom has inner and outer layers of polypropylene fiber and nano titanium dioxide. The bag edge has needle threading. The coatings provide pest and disease protection while allowing light transmission for proper mango color development.

Source

A formula for UV-resistant plastic woven bags that improves durability and longevity under sunlight compared to conventional bags. The formula contains specific proportions of base resins like polypropylene and low-density polyethylene, as well as additives like UV absorbers, talc, nanometer titanium carbonate, calcium carbonate whiskers, and carbendazim. These components work together to provide UV protection, prevent peeling, cracking, and smashing of the bags, especially in high temperatures.

Source

Single-layer plastic packaging with improved light shielding properties for protecting photosensitive products like food from light-induced degradation. The packaging uses a high concentration of treated titanium dioxide particles in the single layer, above 6% by weight. The treated TiO2 provides light shielding without adding fillers like CaCO3. The high TiO2 content allows a single-layer package with thicknesses in the common range for containers like 12 mils. The treated TiO2 can be processed into the packaging via masterbatches. The high TiO2 content in the packaging prevents light damage to photosensitive products without adding fillers or multilayers.

Source

A monolayer packaging material with high titanium dioxide (TiO2) loading for light protection of packaged products without the need for additional layers. The monolayer contains TiO2 particles coated with a metal oxide and an organic material, along with a melt processable resin. The coating on the TiO2 particles allows processing at high TiO2 concentrations of 6-14 wt% in the monolayer. This monolayer provides effective light protection with LPF values of 25-120.

Source

UV-resistant scratch-resistant polypropylene material that can withstand UV radiation and maintain mechanical properties without degradation. The material contains coated nano-titanium dioxide, benzotriazole light stabilizers, a coupling agent, and antioxidants. The coated nano-titanium dioxide provides UV shielding while preventing degradation of the polypropylene matrix. The benzotriazole light stabilizers further enhance UV resistance. The coupling agent improves adhesion between the coated nano-titanium dioxide and polypropylene. The antioxidants prevent oxidative degradation. The composite of additives provides superior UV resistance and scratch resistance compared to uncoated titanium dioxide alone.

Source

Titanium dioxide filler for improving the optical properties of plastics like whiteness, gloss, and weatherability. The filler has a specific surface area of at least 40 m2/g and a primary particle size of 15-30 nm. This optimized filler composition provides enhanced optical properties when added to plastics compared to conventional titanium dioxide fillers.

Source

An ultraviolet-resistant packaging material that can protect packaged items from UV degradation. The material contains specific components like isocyanate, polycarbonate, methyl methacrylate, polyvinyl alcohol, polyester polyol, alkyd resin, foaming agent, hydrogen peroxide, glycerin, calcium propionate, ultraviolet absorber, antioxidant, titanium dioxide, and stannous octoate.

Source

Bacteriostatic nanoplastic packaging material that provides improved antibacterial properties for food packaging bags. The packaging material contains nano-silver particles, graphene, chitin fiber, allicin, bamboo fiber, nano-tin oxide, nano-titanium dioxide, antiscratch agent, coupling agent, and UV absorber in addition to the base polypropylene and low-density polyethylene. These nano-additives provide antibacterial, antifungal, and self-cleaning properties to the packaging material.

Source