PETG in Plastic Packaging
6 patents in this list
Updated:
PETG (Polyethylene Terephthalate Glycol-modified) packaging materials face increasing scrutiny due to their persistence in the environment. While PETG offers excellent clarity, impact resistance, and processing characteristics at temperatures between 230-250°C, its non-biodegradable nature poses significant environmental challenges when compared to emerging sustainable alternatives.
The fundamental challenge lies in developing biodegradable alternatives that match PETG's mechanical properties and processing convenience while ensuring complete breakdown in natural environments.
This page brings together solutions from recent research—including PLA-PHB crosslinked blends, polyester compositions with aromatic-aliphatic combinations, and novel PET-PGA materials with enhanced degradation properties. These and other approaches focus on achieving the balance between material performance and environmental responsibility in modern packaging applications.
1. Biodegradable Food Packaging Film Comprising Extruded and Biaxially Stretched Polymer Blend
Hunan University of Technology, HUNAN UNIVERSITY OF TECHNOLOGY, 2021
A fully degradable food packaging film that has good mechanical properties and is non-hazardous to food. The film is made by extrusion and biaxial stretching of a blend of biodegradable polymers like polybutylene succinate, lactic acid, end-group polylactic acid, six-arm polyethylene glycol end-group, methyl chitosan, eight-arm maleic acid tincture cage polysilsesquioxane, melt enhancer, antioxidant, and stannous chloride. This composition provides excellent mechanical properties like strength and tear resistance for a biodegradable film suitable for food packaging applications.
2. Composite Plastic Material with Degradable Matrix and Reinforcing Fibers
DALONG ZHANG, 2019
An environmentally friendly plastic material that can degrade in the natural environment while maintaining properties like impact resistance, oxidation resistance, and corrosion resistance. The material is made by combining components like degradable plastic, modified starch, glass fiber, plant fiber, PLA, PHB, carbon black, ethylene terephthalate, stearic acid, and antioxidant in specific weight ratios. The degradable plastic is made by mixing and cross-linking PLA and PHB.
3. Polyethylene Terephthalate and Polyglycolic Acid Blend with Variable Composition and Enhanced Degradation Properties
UNIV JIANGSU TECHNOLOGY, 2018
Biodegradable blend of polyethylene terephthalate (PET) and polyglycolic acid (PGA) that degrades into harmless carbon dioxide and water. The blend contains 50-70 parts PET and 10-40 parts PGA. The PGA gradually degrades, promoting acidic degradation of PET. The PGA pores also reduce PET intermolecular bonding. This synergistic effect enhances PET biodegradability without significantly impacting its properties.
4. Biodegradable Plastic Composition with Crosslinked PLA-PHB Masterbatch and Reinforcing Additives
JIANGSU DAOQIN NEW MATERIALS CO LTD, 2016
Biodegradable plastic material with improved properties for packaging applications. The biodegradable plastic is made by combining biodegradable masterbatch, modified starch, polypropylene copolymer, glycidyl methacrylate, carbon black, glass fiber, vegetable fiber, fatty acid glycol, stearic acid, antioxidant, and MPA. This composition provides biodegradability, impact resistance, oxidation resistance, and corrosion resistance for packaging materials. The biodegradable masterbatch is a mixture of PLA and PHB polymers crosslinked together.
5. Biodegradable Polyester Resin Composition with Aromatic-Aliphatic Polyester, Polylactic Acid, Poly(Vinyl Alcohol), and Organic Peroxide Crosslinking Agent
??, 2011
A biodegradable polyester resin composition that balances biodegradability and mechanical properties for packaging applications. The composition contains a mixture of aromatic-aliphatic polyester, polylactic acid (PLA), poly(vinyl alcohol), plasticizer, and organic peroxide crosslinking agent. The addition of poly(vinyl alcohol) improves biodegradability while maintaining mechanical strength compared to just using PLA.
6. Biodegradable Polyester Resin Composition with Aliphatic Polyester, Starch, Poly(Vinyl Alcohol), Plasticizer, and Cross-Linking Agent
HANCHUL, 2011
Biodegradable polyester resin composition with improved mechanical properties and reduced environmental pollution compared to conventional biodegradable plastics. The composition contains an aliphatic polyester, starch, poly(vinyl alcohol), a plasticizer, and a cross-linking agent. Mixing these components in specific ratios provides a biodegradable resin with better strength, flexibility, and biodegradability than using just one or two of these components.
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