Thermoplastic PET in Packaging Applications

PET (polyethylene terephthalate) material with high barrier properties for packaging applications like bottles that have improved water and oxygen barrier performance compared to regular PET. The barrier enhancement is achieved by blending PET with additives like polylactic acid, inorganic fillers, and silane coupling agents during polymerization. The fillers like graphene oxide, calcium carbonate, and titanium dioxide improve barrier properties by extending the penetration path of water and oxygen molecules. The coupling agent helps distribute the fillers evenly in the material.

Source

Packaging container made from biomass-derived PET with comparable mechanical properties to conventional PET. The biomass-derived PET has specific X-ray diffraction characteristics that correlate with improved buckling strength. The container is formed from a PET resin derived from biomass sources. To ensure comparable properties, the X-ray diffraction peak width and shift are measured. The width of the halo peak (half value width) should be 0.94-1.06 times that of fossil fuel-derived PET. The peak position difference between top and center width should be 0.24-5.08 degrees. This indicates a more uniform crystal structure in the biomass-derived PET. These X-ray diffraction characteristics can be used as a quality control metric for biomass-derived PET packaging containers.

Source

Nucleating agent with improved compatibility for recycled polyethylene terephthalate (PET) that enhances crystallization and performance of recycled PET. The nucleating agent has a specific structure and preparation conditions to maximize its dispersion and effectiveness in recycled PET. It contains a montanic acid moiety and is synthesized by reacting an acrylic acid derivative with montanic acid. The optimal dosage of montanic acid and stirring time were determined to achieve the best compatibility and crystallization properties in recycled PET.

Source

Blended barrier plastic packaging container with improved heat resistance, barrier properties, and mechanical strength compared to pure PET containers. The container is made by blending polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polym-xylylene adipamide (PXA), modified montmorillonite clay, and compatibilizers like grafted polypropylene-maleic anhydride (PP-g-MAH) and grafted polyethylene-maleic anhydride (PE-g-MI). The compatibilizers reduce interfacial tension between the blended phases and improve their compatibility, leading to better heat resistance, barrier properties, and mechanical strength. The PEN and modified montmorillonite increase heat resistance, while PXA improves barrier properties.

Source

Polyethylene terephthalate (PET) mixture with improved crystallization speed, mechanical properties, and molding cycle compared to conventional PET composites. The mixture contains PET resin, toughening agent, reinforcing agent, nucleating agent, and processing aid. The nucleating agent is a combination of long-chain linear saturated montanate, talc, and polyethylene. This combination significantly improves formability, mechanical properties, heat distortion temperature, and shortens molding cycle compared to using a single nucleating agent.

Source

Modified PET packaging material with improved barrier properties, such as for food and pharmaceutical applications, by adding specific agents to the PET resin. The modification involves using an auxiliary agent made from grafting maleic anhydride onto poly(4-methyl-1 pentene) to improve light barrier and flexibility. Modified nanoclay with organic chains grafted onto the surface is added to enhance dispersion and barrier properties. Antioxidant and lubricant complete the formula.

Source

Resin composition, molded articles, laminated films, and packaging containers with improved impact resistance and welding strength. The composition contains a polyester resin, a polyethylene resin, and a compatibilizer with an epoxy group. The polyester resin is modified with a dialkyl-substituted diol. This composition can be used to make molded products, laminated films, and packaging containers with improved impact resistance and welding strength compared to using just polyester resin. The sea-island structure of polyethylene islands in a polyester matrix further improves impact resistance.

Source

Packaging container with improved impact resistance and weld strength compared to containers made solely from polyester or polyamide resins. The container has a molded article made from a resin composition containing a modified polyester resin, polyethylene, and an epoxy-containing compatibilizer. The molded article is joined to a torso with a layer of the same modified polyester resin. The modified polyester resin is a polyethylene terephthalate with dialkyl substitution. The sea-island structure of polyester and polyethylene in the molded article provides strength and impact resistance. The modified polyester layer on the torso improves weld strength.

Source

A modified polyethylene terephthalate (PET) engineering plastic with improved processability and properties. The modified PET contains an organic nucleating agent, N-butyl pyridine potassium salt, and an inorganic nucleating agent, talc. The organic nucleating agent improves crystallization efficiency and reduces mold release issues. The inorganic nucleating agent provides uniform crystal structure. The organic and inorganic nucleating agents are combined in a specific ratio to enhance compatibility with PET. This allows the modified PET to have better mechanical strength, thermal properties, and mold release compared to PET alone.

Source

Rare earth modified preform polyester material for improving impact resistance, absorbency, and processing of PET preforms used in packaging. The material contains optimized amounts of rare earth nucleating agent, montmorillonite, hydrotalcite, stabilizer, coupling agent, compatibilizer, and toughener compared to conventional PET preforms. The rare earth nucleating agent speeds up PET crystallization for better mechanical properties. Montmorillonite and hydrotalcite improve barrier properties and thermal stability. The additives also enhance interfacial properties.

Source

High-barrier packaging bottle for prickly pear juice that extends shelf life by preventing oxidation. The bottle is made by melt blending PET and PEN resins in a composite material. The composite has improved gas barrier properties compared to PET alone, particularly for oxygen, to reduce oxidation and degradation of nutrients like vitamin C and antioxidants in the juice. The composite bottle can be prepared by mixing the blended resins and then blow molding into the final shape.

Source

A solvent-resistant and drop-resistant packaging bottle made from recycled PET that improves the properties of recycled PET for packaging applications. The bottle contains modified N,N-bis(2-hydroxyethyl)dodecylamide (BHDA) and tetrachlorophthalic anhydride (TCPA) added to the recycled PET flakes during processing. This improves the impact strength and solvent resistance of the recycled PET compared to using just recycled PET. The BHDA increases chain flexibility and segment entanglement, while the TCPA enhances chain rigidity.

Source

A plastic alloy with improved solvent resistance and low-temperature impact resistance compared to traditional PC/PET blends. The alloy contains polycarbonate (PC), siloxane copolymerized PC, polyethylene terephthalate (PET), nucleating agent, toughening agent, and compatibilizer. The siloxane copolymerized PC provides better solvent resistance and low-temp impact compared to PC alone. However, compatibility between the crystalline PET and amorphous PC/siloxane blends is poor. The nucleating agent improves crystallization of the PET to enhance compatibility. The toughening agent and compatibilizer improve overall mechanical properties.

Source

A plastic material for beverage bottles that improves processing speed and crystallization rate of PET bottles while maintaining impact resistance. The material composition includes 80-120 parts PET, 25-35 parts fillers, 0.1-0.3 parts antioxidant, 1-3 parts compatibilizer, 2-4 parts nucleating agent, 1-3 parts plasticizer, and 2-4 parts lubricant. The nucleating agent is a mixture of montmorillonite, magnesium oxide, salt, and polyethylene oxide in specific ratios. This combination promotes PET crystallization and reduces processing time compared to using PET alone.

Source

Stress-resistant white polyethylene terephthalate (PET) resin that prevents stress whitening without requiring post-treatment. The PET resin composition contains ultrafine silicon carbide, glass fiber, polytrimethylene terephthalate, antioxidant, and stearic acid amide. The composition is prepared by mixing and extruding the components at specific temperatures and speeds. The added fillers and additives improve stress cracking resistance and reduce stress whitening compared to unmodified PET.

Source

Polyethylene terephthalate (PET) resin composition for making biaxially stretched films used in food packaging applications like metal can liners. The composition contains specific levels of manganese, germanium, carnauba wax, and glycol ether to provide improved peelability, transparency, and heat resistance compared to conventional PET. The manganese and germanium elements reduce gelation and color degradation during processing. The carnauba wax improves adhesion and surface properties.

Source

Antibacterial and antifogging PET blister packaging material for food products. The material combines antibacterial properties to prevent microbial growth with antifogging ability to prevent condensation inside the packaging. The PET base material is modified with antibacterial, antifogging, and other additives like dispersants to achieve both functionalities. This allows extended shelf life of packed foods without spoilage or fogging issues.

Source

Monolayer packaging material for milk and dairy products that provides both oxygen barrier and light protection. The material is a polyethylene terephthalate (PET) composite containing titanium dioxide and nanoclay. The nanoclay improves gas barrier properties while titanium dioxide provides UV/visible light opacity. The weight ratio of titanium dioxide to nanoclay is 150-250:1.

Source

Green barrier composite packaging material that provides good barrier properties, resistance at high temperatures, and recyclability. The material is a composite of specific polyesters, waxes, silanes, phosphates, and other additives. It can contain components like polyethylene naphthalate (PEN), polyethylene terephthalate (PET), polybutylene terephthalate (PBT), magnesium stearate, polyamide, zinc ricinoleate, candelilla wax, phenyltriethoxysilane, tantalum diselenide, talc, methyl methacrylate, sodium tripolyphosphate, patchouli alcohol, rosin acid, and polyvinyl chloride (PVC). The material is prepared by mixing and dispersing the components followed by extrusion granulation.

Source

A resin composition containing a low molecular weight polycarbonate, a high molecular weight polycarbonate, and polyethylene terephthalate with specific molecular weight and IV ranges. The blended resin composition has excellent tensile properties when formed into a molded product. The low and high molecular weight polycarbonates improve tensile elongation, while the polyethylene terephthalate provides flame resistance. The blending ratios between the polycarbonates and the polyethylene terephthalate are also specified. The composition provides both improved tensile properties, flame retardancy, and moldability compared to conventional polycarbonate-polyethylene terephthalate blends.

Source