Biodegradable Plastic Composition for Seafood Packaging
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current seafood packaging materials, primarily derived from petroleum-based plastics, are non-biodegradable, leading to environmental pollution and harm to aquatic fauna, with limited recycling options and inadequate mechanical properties for aggressive marine environments.
Innovation Solution
A recyclable, biodegradable, and compostable plastic composition comprising poly(butylene succinate) with a mineral filler like oyster shell powder, plasticizing compounds, and optional additives for enhanced mechanical and thermal resistance, suitable for food contact and seafood storage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If petroleum-based plastics (PE, PP) are used for fish boxes, then mechanical strength and service life are improved, but environmental pollution and non-biodegradability worsen
Solution Approach 1:
The patent uses composite materials by combining biodegradable polymers (PLA, PHA, PBS) with natural fibers (cellulose, starch) and mineral fillers (calcium carbonate, talc) to create a material that maintains mechanical strength while being environmentally friendly and biodegradable
Solution Approach 2:
The patent changes the chemical composition parameters by replacing petroleum-based polymers with biodegradable alternatives and adjusts the ratios of different components (polymer matrix 60-90%, filler 10-40%, fiber 0-20%) to optimize both mechanical properties and biodegradability
2Object-generated harmful factors
If biodegradable plastic compounds (PLA, PHA, PBS) are used, then environmental pollution is reduced, but mechanical strength and impact resistance worsen
Solution Approach 1:
The patent reinforces biodegradable polymers by incorporating natural fibers (cellulose fibers, starch fibers) and mineral fillers (calcium carbonate, talc, mica) to enhance tensile strength, impact resistance, and rigidity while maintaining biodegradability
Solution Approach 2:
The patent applies different components with specific functions: polymer matrix provides biodegradability, fiber reinforcements provide tensile strength, and mineral fillers provide rigidity and dimensional stability, creating a material with locally optimized properties
3Strength
If rigid packaging materials are used for seafood storage, then mechanical protection is improved, but adaptability to aggressive marine environments (salinity, UV, temperature) worsens
Solution Approach 1:
The patent modifies material parameters by selecting biodegradable polymers with inherent resistance to salinity and UV degradation, and by adding specific additives (UV stabilizers, antioxidants) to enhance adaptability to aggressive marine environments while maintaining mechanical strength
Solution Approach 2:
The patent designs single-use or limited-life rigid packaging from biodegradable materials that can withstand marine environments during their service life, then naturally degrade after use, eliminating the need for long-term durability against environmental degradation
Data Source
Figure 1~2
Figure 3
AI summary
A recyclable, biodegradable, and/or compostable plastic composition suitable for food contact, a rigid article for storing or packaging seafood products made from this recyclable, biodegradable, and/or compostable plastic composition, and the corresponding processes and uses have been developed. The compositions and articles are recyclable, biodegradable, and/or compostable.