Compostable Single-Serve Beverage Package With Heat-Resistant Fiber Structure
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Solution Overview
Problem
Existing single-serve beverage ingredient packages are not biodegradable, compostable, or made from renewable resources, leading to environmental concerns due to non-recyclable materials and landfill disposal.
Innovation Solution
A biodegradable and compostable single-serve beverage package made from fibrous plant materials like bamboo and bagasse, with a filter assembly using polylactic acid (PLA) or poly-L-lactide (PLLA) support rings and paper-like substances, ensuring durability and heat resistance for brewing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If petroleum-based plastic materials and metal foil laminates are used for container and cover, then durability and heat resistance are improved, but biodegradability and compostability deteriorate
Solution Approach 1:
The patent changes the material parameters from petroleum-based plastics to plant-based biopolymers (PLA, PHA, starch blends) that maintain structural integrity while being biodegradable. The cover transitions from metal foil to molded pulp or biodegradable polymers, achieving both durability and environmental compatibility through parameter changes in material composition and thermal properties.
Solution Approach 2:
The patent employs composite materials such as starch-blend polymers combined with biodegradable plasticizers and reinforcing agents to achieve the necessary mechanical strength and heat resistance. The filter assembly uses composite structures combining biodegradable polymers with natural fiber reinforcements, maintaining filtration effectiveness while ensuring compostability.
2Reliability
If metal foil and glue are used for cover construction, then sealing effectiveness is improved, but compostability and renewability deteriorate
Solution Approach 1:
The patent extracts and eliminates metal foil and synthetic adhesive components from the cover structure. Instead, it uses molded pulp constructions with integrated sealing flanges and biodegradable adhesive compositions based on natural polymers, removing the non-compostable elements while maintaining sealing functionality through alternative design approaches.
Solution Approach 2:
The patent adopts a disposable molded pulp cover design that is optimized for single-use composting rather than durable reuse. The cover is designed with sufficient sealing effectiveness for the brewing operation but is intentionally constructed from inexpensive, rapidly compostable materials that decompose completely after use, eliminating the need for recycling infrastructure.
3Manufacturing precision
If petroleum-based plastics are used for container and filter, then manufacturing precision and structural integrity are improved, but renewability and biodegradability deteriorate
Solution Approach 1:
The patent changes the material parameters from petroleum plastics to plant-based polymers with controlled molecular weight distributions and crystallinity levels that provide adequate structural integrity for single-serve containers. The filter media uses parameters optimized for porosity and flow characteristics while maintaining biodegradability, achieving manufacturing precision appropriate for the disposable application without requiring permanent durability.
Data Source
AI summary
Single-serve ingredient packages made from materials which are biodegradable and compostable and which are derived from readily renewable resources environmentally advantageous and may be used to brew beverages such as coffee, tea and cocoa.