Water-Soluble Polymeric Foam for Recyclable Packaging
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional packaging materials, such as those using closed cell extruded polystyrene foam or bubble wrapping, are not recyclable or compostable, leading to environmental waste issues, and more eco-friendly alternatives lack durability for effective thermal insulation, impact protection, and compression resistance.
Innovation Solution
Development of polymeric foamed compositions comprising a copolymer with divalent hydroxyethylene and dihydroxybutylene monomer units, forming a water-soluble foam that can be used in recyclable and compostable foam padded materials and packaging articles, providing improved durability and environmental sustainability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional packaging materials (closed cell extruded polystyrene foam or bubble wrapping) are used, then impact protection and thermal insulation are provided, but recyclability and compostability are lost
Solution Approach 1:
The patent changes the chemical composition parameters of the foam material by using water-soluble polymers (such as polyvinyl alcohol, carboxymethyl cellulose, or starch) instead of conventional non-biodegradable polymers like polystyrene. This parameter change enables the foam to be recyclable and compostable while maintaining its protective function through controlled decomposition characteristics
Solution Approach 2:
The patent creates a composite foam material combining water-soluble polymers with biodegradable blowing agents (such as water, carbon dioxide, or natural esters). This composite structure achieves both environmental compatibility and functional performance, allowing the material to decompose naturally while providing adequate cushioning and insulation properties
2Object-generated harmful factors
If cellulosic materials and water-based adhesives are used, then recyclability and compostability are improved, but durability and functional properties (thermal insulation, impact protection, compression resistance) are insufficient
Solution Approach 1:
The patent modifies the physical and chemical parameters of cellulosic materials by controlling moisture content, adding cross-linking agents, or adjusting polymer molecular weight to enhance mechanical strength. These parameter changes allow the biodegradable material to achieve sufficient durability for packaging applications while maintaining its recyclable and compostable nature
Solution Approach 2:
The patent applies different material properties to different regions of the packaging structure. For example, denser foam formulations are used in high-impact areas while lighter, more biodegradable formulations are used in low-stress areas. This local differentiation optimizes both durability where needed and environmental compatibility where functional requirements are reduced
3Strength
If plastic products are used, then durability and functional performance are achieved, but recycling rate remains low
Solution Approach 1:
The patent changes the material composition from conventional plastics to water-soluble polymers with controlled decomposition rates. This parameter change enables the material to maintain adequate durability during use while being easily recyclable and compostable, thereby increasing the recycling rate without sacrificing functional performance
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The polymeric foamed compositions offer recyclability and compostability while maintaining durability, impact protection, and thermal insulation, addressing the environmental concerns and performance gaps of existing packaging materials.
Implementation Method 1
a polymeric component including a copolymer including divalent hydroxyethylene monomer units and divalent dihydroxybutylene monomer units
Implementation Method 2
the composition is in the form of an at least partially water-soluble foam
Data Source
AI summary
Polymeric foamed compositions, foam padded materials that include such polymeric foamed compositions, and packaging articles (e.g., envelopes) that include such foam padded materials, wherein the foamed composition includes: a polymeric component including a copolymer including divalent hydroxyethylene monomer units and divalent dihydroxybutylene monomer units; wherein the composition is in the form of an at least partially water-soluble foam.