Nucleating Agents for Packaging Crystallization

Degradable plastic bottle for pesticides that can meet the storage requirements of pesticide products. The bottle is made by melt extrusion of a resin blend containing polylactic acid (PLA), polybutylene adipate terephthalate (PBAT), polymethyl ethylene carbonate (PMEC), polyglycolic acid (PGA), and calcium carbonate. The resin mixture is extruded into a preform, which is then blown into the final bottle shape. The PMEC and PGA nucleate PLA crystallization, improving its crystallinity without decreasing barrier properties compared to PLA blends without these additives. The calcium carbonate reinforces the bottle. The degradable bottle can be recycled and degrades under biodegradation conditions.

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Degradable plastic bottle made from a unique blend of biodegradable polymers that improves the mechanical properties and barrier performance compared to existing degradable bottles. The bottle is blow molded from a resin mixture containing PLA, PBAT, PPC, PGA, and calcium carbonate. The PPC and PGA polymers enhance the crystallinity of the PLA, improving its strength and barrier properties. The degradable bottle can hold pesticides without leaching solvents due to the higher crystallinity PLA.

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Multi-cup packaging arrangement and polypropylene sheet for producing it that allows easy breakage of the cups along predefined lines by bending the sheet. The packaging has multiple cups connected by bridges. The sheet has grooves on the bottom surface that divide it into segments. Bending the sheet towards the top breaks it along the grooves, separating the segments with the cups. The groove depth is 25-80% of the sheet thickness. This allows snapping the cups off in a predictable way. The snappability is achieved by using polypropylene with specific properties like nucleating agents and fillers.

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A water-soluble film made of polyvinyl alcohol (PVA) with optimized surface crystallinity for packaging drugs. The film has a specific range of crystallinity index near the surface, calculated using diamond and germanium prisms in ATR-FTIR analysis. This range is Fd1/Fg1 > 1.04 for the surface measured with diamond, and Fd2/Fg2 > 1.04 for the opposite side measured with germanium. The surface crystallinity should be higher than the bulk to balance mechanical strength and water sealability. Adjusting the PVA composition, plasticizer, and processing conditions achieves this.

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A polyolefin sheet with improved properties for press-through packaging applications like blister packaging. The sheet has a layer made from a composition with specific ingredients to provide excellent transparency, moisture resistance, and divisibility. The composition contains high-density polyethylene (HDPE), a crystal nucleating agent, a thermoplastic resin like petroleum resin, and an incompatible thermoplastic resin with high storage modulus. This composition allows the sheet to have superior transparency, moisture resistance, and tearability compared to conventional polyethylene sheets.

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A polyolefin sheet with excellent secondary processability, moisture resistance, transparency, and divisibility for press-through packaging materials. The sheet has a layer made from a thermoplastic resin composition containing specific components. It uses high-density polyethylene (HDPE) as the main resin, a crystal nucleating agent, a thermoplastic resin like petroleum resin, and a thermoplastic resin incompatible with HDPE that has a high storage modulus. This composition improves the sheet's divisibility for easy tearing compared to pure HDPE. The sheet has applications in press-through packages for pharmaceuticals and food products that need transparent, moisture-resistant, and easily tearable packaging material.

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Laminate packaging material that can be easily torn after heat treatment like retort processing, while still having high recyclability. The laminate has a base layer and a sealant layer both made mostly of polypropylene. The sealant layer contains a nucleating agent to improve cuttability. The sealant layer thickness is 30-95% of the total laminate thickness, and 20-200 microns. This allows the sealant layer to dominate cuttability after heat treatment. The high polypropylene content of 90% by mass also improves recyclability.

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Nucleating agent for polyolefin resins with improved beta crystal formation. The nucleating agent is a compound containing an aspartic acid structure. It can be used alone or in compositions with other additives like antioxidants, hindered amine stabilizers, etc. The nucleating agent improves beta crystal formation in polyolefin resins, which enhances properties like transparency, rigidity, and gas barrier properties.

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A resin composition for improving gas barrier properties of packaging materials like films and multilayer films used in food packaging. The resin composition contains two types of polyesters: a first polyester (A) with furandicarboxylate units and a second polyester (B) with ethylene glycol units. The second polyester (B) nucleates crystallization of the first polyester (A) at higher temperatures, improving gas barrier performance compared to using the first polyester (A) alone. Adding the second polyester (B) also increases the crystallization temperature of the first polyester (A) to 135°C or higher. The resin composition can be manufactured by melting and kneading the polyesters together. The polyesters mix at the interface when laminated by coextrusion to form a composite layer with crystals derived from both polyesters.

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A polyolefin sheet for press-through packaging applications that provides improved moisture resistance, transparency, and splittability compared to conventional polyolefin sheets. The sheet has a layer made from a thermoplastic resin composition containing specific components: high-density polyethylene (HDPE), crystal nucleating agent, an incompatible thermoplastic resin with a high storage modulus, and optionally a petroleum resin, terpene resin, coumarone-indene resin, rosin resin, or hydrogenated derivatives thereof. The HDPE density is 0.935-0.945 g/cm3, MFR 0.3-20 g/10 min at 190°C/2.16 kg. The incompatible thermoplastic resin has E' 1000 MPa or more at 2

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Polyolefin sheet with improved moisture resistance, transparency, splittability, and suitability for press-through packaging applications. The sheet has a layer made from a composition containing specific thermoplastic resins. The composition includes a high-density polyethylene (HDPE) resin, a crystal nucleating agent, an incompatible thermoplastic resin, and a thermoplastic resin with high storage modulus. This composition provides a sheet with enhanced moisture resistance, transparency, and splittability compared to pure HDPE sheets. The sheet can be used for press-through packaging materials that require splittability and moisture resistance, like pharmaceutical blister packs.

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Water-soluble film made of polyvinyl alcohol (PVA) resin that balances transparency, water solubility, and prevents sticking between films. The film has specific crystallite size, crystallinity, and external haze values. The crystallite size is 4.0-5.5 nm, crystallinity 10.0-25.0%, and external haze 7.0-30.0%. This provides transparency, water solubility, and reduced adhesion compared to conventional PVA films. The film can be made by adjusting PVA properties, plasticizer content, film formation conditions, and adding nucleating agents.

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Propylene-based polymer composition for making biaxially stretched films with low heat shrinkage. The composition contains a propylene-based polymer and a crystal nucleating agent. The nucleating agent promotes formation of specific crystal structures that reduce shrinkage during stretching. The polymer has a narrow isotactic pentad fraction of 90% or higher and a melt flow rate of 5-30 g/10min. The nucleating agent concentration is 50-5000 ppm.

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Propylene-based polymer composition, biaxially stretched film, method for producing biaxially stretched film, and packaging bag. The composition contains a propylene-based polymer and a β-crystal nucleating agent. The composition has a specific melt flow rate (1-30 g/10 min), crystallinity (0.1-1.0%), and β-nucleating agent concentration (100-500 ppm) range. The film made from this composition has high TD modulus and low TD heat shrinkage compared to conventional propylene films. The film production involves sequential MD and TD stretching with relaxation between stretches. This allows the film to have high MD and TD orientation without excessive shrinkage. The films can be used in packaging bags.

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Primary lens packaging material made from a nucleated polypropylene resin that provides improved lens packaging with reduced additive transfer to the lens and solution. The resin is a polypropylene homopolymer with additives like stabilizers, acid scavengers, and nucleating agents. The resin composition allows for controlled shrinkage, higher crystallization temperature, and stiffer parts compared to unnucleated polypropylene. The nucleating agents aid crystallization and reduce injection molding cycle times. The acid scavengers prevent degradation during processing.

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Biodegradable packaging material for consumer goods that is predominantly home compostable. The packaging material is a polymer blend containing biodegradable polymers like polyhydroxyalkanoates and biodegradable polyesters like polybutylene succinate. A nucleating agent is added to improve the polymer properties. The blend can be used to make packaging components like bags, films, and containers for products like clothing, food, and health items that can decompose in home composting environments.

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Bio-degradable polymer composition for producing packaging films with improved barrier properties using natural additives to reduce gas diffusion. The composition contains polylactide (PLA) as the biodegradable polymer, plasticizers like PEG copolymer or styrene-acrylic oligomer, and a nucleating agent. The PLA is blown or extruded into a thin film, then tempered at 90-130°C to increase crystallinity and significantly improve gas barrier properties without lamination. The tempering step is key to achieving the high gas barrier levels.

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Biodegradable polymer composition for producing packaging films with enhanced barrier properties, specifically for food packaging, using a composition containing natural additives to reduce gas diffusion. The composition is a single-layer film made from biodegradable polymers like PLA that has improved barrier properties without the need for lamination or complex processing techniques. The films are blow molded or extruded, then tempered at 90-130°C to improve crystallinity and further enhance barrier properties. The natural additives, like nucleating agents, help control crystallization during processing and provide better barrier properties. This allows making biodegradable packaging films with sufficient barrier properties for food applications using simpler, more economical, and recyclable processes compared to laminated or multi-layer films.

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Polyolefin-based sheet for press-through packaging with improved moisture resistance, transparency, and splittability. The sheet has a layer made from a composition containing specific thermoplastic resins like HDPE, crystal nucleating agent, petroleum resin, incompatible thermoplastic, and additives. The sheet's properties allow better moisture resistance, transparency, and easier hand cutting compared to conventional polyolefin sheets. The sheet is used for press-through packaging applications like PTP packaging and blister packs. The sheet is formed by extrusion and quenching techniques.

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Compostable food packaging containers made from materials that break down in composting facilities. The containers aim to reduce landfill waste by using compostable polymers instead of non-biodegradable materials like styrene and polyethylene. The compostable polymeric material for the containers has a specific composition, crystallinity, and cooling rate during processing to achieve compostability without sacrificing barrier properties. The containers contain about 90-99% compostable polymer, a nucleating agent, and have a degree of crystallinity of 5-45%. This allows them to decompose in composting environments while still providing suitable food preservation.

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Multi-cup packaging arrangement using snappable polypropylene sheets that allow easy segmentation when bending in one direction but prevent breakage when bending in the other direction. The snappable PP sheets have cavities separated by spacer areas with bottom grooves. The groove depth is 25-80% of the sheet thickness. This allows breaking along the grooves by bending away from the cups. It avoids breaking into the cups when lifting. The snappability is achieved through specific groove depth, filler content, and nucleating agents in the PP.

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Compostable food packaging containers made from materials that can decompose in composting environments. The containers aim to reduce landfill waste by providing a compostable alternative to conventional non-biodegradable food packaging. The compostable materials used in the containers are specifically formulated to have a suitable shelf life for the packaged food while also achieving a compostable construction. The compostable materials are made by melting compostable polymers with nucleating agents and cooling them at faster rates than normal to create a lower crystallinity level. This reduces the melting temperature and makes the material more compostable.

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Compostable food packaging materials that have improved thermal and mechanical properties like higher heat resistance and stiffness compared to traditional compostable materials. The compostable packaging is made by combining a compostable polymer with a nucleating agent and rapidly cooling the extruded material. This results in a compostable material with lower crystallinity than the base polymer, which allows faster thermoforming and better microwaveability while maintaining strength and shape at higher temperatures.

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A resin composition for films and packaging materials with improved properties like gas barrier and stretchability. The composition contains a specific polyester resin with a furandicarboxylic acid unit and 1,4-butanediol unit, along with a separate polyester resin with a terephthalic acid unit. The first resin has a high crystallization temperature, which improves properties like gas barrier and manufacturability. The second resin functions as a crystal nucleating agent to properly crystallize the first resin during cooling. This allows the film to be made without needing additives like talc or wax that can cause defects or surface issues.

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Crystal nucleating agent for polyethylene resins that improves mechanical properties and gas barrier performance without eluting into food. The crystal nucleating agent is formed by grafting polyethylene onto the surface of silica particles. The grafted polyethylene provides crystal nucleation sites when added to polyethylene during processing. This improves crystallization without elution issues when using the compositions for food packaging. The grafted particles are added in small amounts, 0.1-10% based on polyethylene, and the graft density is around 360-400 chains per particle.

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Novel resin composition for packaging films that provides excellent moisture resistance and transparency. The composition contains an ethylene-based copolymer and a crystal nucleating agent. The ethylene copolymer has specific compositions and density range. The crystal nucleating agent allows controlled crystallization of the copolymer. This composition allows preparing packaging films with low water vapor transmission rates and good transparency.

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Manufacturing method for plastic bottles with improved gas barrier and creep resistance without sacrificing transparency. The method involves using a polyester resin containing sulfonamide or sulfonimide metal salts during bottle preform fabrication. Blow molding the preform to create the bottle is done at a specific draw ratio range of 7-10 times. This allows the salts to nucleate the polyester crystallization, enhancing gas barrier and creep resistance in the final bottle.

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Multilayer film and packaging with improved gas barrier properties and transparency. The multilayer film has alternating layers of a crystalline resin and a thermoplastic resin with thicknesses of 10-1000 nm. One or both of the films contain a crystal nucleating agent to promote crystal orientation. This high crystal orientation in both films provides better gas barrier and transparency compared to films with low crystal orientation.

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Polypropylene film for packaging produce like vegetables that has both fog resistance and slippery properties. The film has a two-layer structure where the inner layer is made of a propylene copolymer and the outer layer is made of pure propylene resin. Additives like antifoggers, lubricants, and crystallization nucleating agents are used in the layers to optimize performance. The film combines fog resistance to prevent moisture condensation with slipperiness to prevent sticking when packed with produce.

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Front head packaging sheet for tofu containers that prevents sticking and extends shelf life. The sheet is made by blending a specific combination of propylene polymers, slip agents, UV stabilizers, nucleating agents, and lubricants. The blended resin is extruded into sheets that are used to package tofu heads. The slip agents reduce adhesion between the solidified tofu and the container, making separation easier. The UV stabilizers protect the tofu from light. The nucleating agents improve crystallization rate. The lubricants aid processing. Blending these additives into the propylene resin allows the tofu to separate cleanly from the container without sticking.

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An opaque PET composition for packaging photosensitive products like foods, pharmaceuticals, and pesticides that does not degrade product quality when stored in light. The composition contains 90-99% PET as the matrix, 1-10% polyolefin, 4-1000 ppm reheat additive, and 0.1-15% inorganic nucleating agent. This composition provides opacity without issues like bottle bursting when high TiO2 levels are used. The opaque PET can be extruded into sheets, films, or thermoformed into packagings.

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Recyclable packaging with improved grease resistance that uses a nucleated high density polyethylene (HDPE) layer in the packaging structure. The HDPE layer contains HDPE with a density of 0.95-0.97 g/cc and a nucleating agent. This HDPE layer sandwiched between other layers like LLDPE, LDPE, EVA, ESI, ULDPE, etc. provides better grease resistance compared to conventional HDPE. The nucleated HDPE prevents grease permeation through the HDPE layer.

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Film for packing applications with improved moisture barrier and transparency compared to conventional films. The film is made from a specific resin composition containing an ethylene-based copolymer and a crystal nucleator. The ethylene copolymer has a density of 0.941-0.950 g/cm3 and consists of >50% ethylene units along with butene-1 and octene-1 units. The crystal nucleator is added in trace amounts to control the crystallization of the ethylene copolymer during film formation. This provides the desired balance of moisture barrier and transparency for packaging applications. The film can be multilayer structures with the inner layer containing the specific ethylene copolymer.

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Method to produce transparent plastic bottles with improved crystallization and molding properties by using a specific compound called 1,2-benzisothiazol-3(2H)-one 1,1-dioxide (BIT). The compound is added in a masterbatch formulation containing 0.005-0.025 parts BIT per 100 parts polyester resin. This masterbatch is then mixed with the polyester resin and molded into the bottle shape. The BIT nucleates crystallization of the polyester, improving molding cycle time and reducing whitening compared to direct addition of BIT powder.

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A heat-resistant, heat-insulating container for packaging that can withstand high temperatures while maintaining insulation properties. The container is made by thermoforming a multilayer sheet with a foam layer sandwiched between two heat-resistant skin layers. The foam layer provides insulation, while the skin layers provide heat resistance. The foam layer contains a crystal nucleating agent like talc to improve the crystallinity of the polymer in the foam. The high crystallinity of the foam layer helps it withstand high temperatures without melting, while still providing insulation.

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Retort food packaging with improved heat resistance and transparency for retort processing conditions. The packaging uses a composition containing cyclic olefin units, nucleating agents, and a specific range of molecular weight for the polypropylene resin. The cyclic olefin units provide transparency and heat resistance. Nucleating agents increase crystallinity for strength. The polypropylene molecular weight range balances heat resistance and film properties. This allows high heat retort processing without distortion or loss of transparency.

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Method for manufacturing plastic bottles with improved transparency, reduced yellowness, and faster molding cycle. The method involves adding a small amount of 1,2-benzisothiazole-3(2H)-one 1,1-dioxide compound to the polyester resin used in bottle production. This compound is mixed into a masterbatch with the resin, then blended with the main resin to make the bottle material. The 1,2-benzisothiazole-3(2H)-one 1,1-dioxide acts as a crystal nucleating agent to improve crystallization speed.

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Polyolefin-based resin packaging material with excellent transparency, heat resistance, low contamination, and low odor. The resin contains a combination of nucleating agents, clearing agents, and antioxidants to improve properties like clarity, impact resistance, and heat stability compared to unmodified polyolefins. The nucleating agents promote crystallization and reduce haze. The clearing agents enhance transparency. The antioxidants prevent degradation. The optimized additive package enables high-performance polyolefin packaging with better clarity, strength, and heat resistance compared to conventional polyolefins.

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Polypropylene composition for extrusion blow molding bottles with improved properties like gloss, impact resistance, and stiffness compared to conventional bottles. The composition contains a propylene copolymer, high melt strength propylene homopolymer, and a nucleating agent. The composition allows producing extrusion blow molded bottles with better appearance, impact resistance, and stiffness compared to regular bottles made from injection molding. The nucleating agent enhances the crystallization of the propylene copolymer to improve properties like gloss and impact resistance.

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A polyethylene-based sheet with improved secondary processability, moisture resistance, and transparency compared to conventional high-density polyethylene (HDPE) sheets. The sheet contains a resin layer with a specific composition of ethylene polymer, nucleating agent, and olefin compatible resin. The ethylene polymer has a melting temperature of 120-140°C and high melting enthalpy. The olefin compatible resin improves moisture resistance. The nucleating agent enhances transparency. The olefin compatible resin and nucleating agent are used in specific ratios. This composition allows secondary processes like thermoforming and coextrusion while maintaining transparency and moisture resistance. The sheet finds applications in packaging like PTP and blisters.

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Method to produce clear plastic bottles with improved crystallization and reduced molding cycle time. The method involves adding a small amount of a compound called 1,2-benzisothiazol-3(2H)-one 1,1-dioxide (BIT) to the polyester resin used for the bottles. BIT is blended with the resin in a masterbatch. This masterbatch is then mixed with the main resin and molded into the bottle shape. The BIT compound enhances crystallization of the polyester, allowing faster molding cycle times and preventing issues like whitening or turbidity. The optimal BIT concentration is 0.005-0.025 parts by mass per 100 parts resin.

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Method for producing plastic bottles with improved crystallization and reduced whitening. The method involves adding a small amount of 1,2-benzisothiazol-3(2H)-one 1,1-dioxide compound to the polyester resin during production. The compound is blended with the resin using a masterbatch or added directly during polycondensation. This improves crystallization of the plastic bottle without whitening or clarity issues. The compound amount is 0.005-0.025 parts by mass per 100 parts resin.

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Manufacturing method for plastic bottles that prevents modification of the mouth region when heated during sterilization, improves transparency, and reduces metallic mold contamination. The method involves adding crystal nucleating agents like sulfonamide compounds or SURUHON imide compounds to the polyester resin during fabrication. This accelerates crystallization during cooling, preventing chlorosis and modification of the mouth region when sterilized. The crystal nucleating agents also improve transparency compared to conventional methods.

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Cartridges and plungers for packaging high-viscosity resin compositions like sealants or adhesives that have improved gas barrier properties while reducing cost compared to fully aluminum-coated alternatives. The cartridges and plungers are made from high-density polyethylene mixed with a crystal nucleating agent. For cartridges, a high gas barrier layer is provided on at least a portion of the filled body. For plungers, the entire plunger is made from the nucleated HDPE. This partially nucleated HDPE provides sufficient gas barrier properties for many resin compositions without needing full aluminum coating. The crystal nucleating agent improves HDPE's intrinsic gas barrier by promoting crystallization during processing.

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