Insulated Container Using Polypropylene Cellular Formulation
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Solution Overview
Problem
Current polymeric materials used for insulation, such as expanded polystyrene, face challenges in providing effective insulation, recyclability, puncture resistance, and microwavability while maintaining structural integrity and aesthetic appeal.
Innovation Solution
A polymeric material formulation comprising a polypropylene base resin with high melt strength, a polypropylene copolymer or homopolymer, nucleating agents, blowing agents, and slip agents, which is extruded to form an insulative cellular non-aromatic polymeric material with localized plastic deformation, enabling efficient insulation, recyclability, and resistance to punctures and heat.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If expanded polystyrene is used for insulation, then insulation performance is improved, but puncture resistance and structural integrity deteriorate
Solution Approach 1:
The patent uses polypropylene as a composite material that combines insulation properties with mechanical strength. The polypropylene material integrates both thermal insulation capability and puncture resistance in a single material system, eliminating the need for separate insulation layers and structural components.
Solution Approach 2:
The patent modifies the physical and chemical parameters of polypropylene through formulation adjustments, including molecular weight distribution control and additive selection, to achieve optimal balance between insulation performance and mechanical strength properties.
2Temperature
If traditional polymeric insulation materials are used, then insulation performance is improved, but recyclability deteriorates
Solution Approach 1:
The patent employs polypropylene, a material that can be easily recovered and recycled through established plastic recycling processes. The material maintains its insulation performance through multiple recycling cycles, enabling effective material recovery and reuse.
Solution Approach 2:
The patent optimizes polypropylene formulation parameters to ensure compatibility with standard recycling processes while maintaining insulation performance, including controlling molecular weight distribution and selecting recyclable additives.
3Temperature
If insulation material thickness is increased, then insulation performance is improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent uses polypropylene as a multi-functional composite material that provides both structural support and thermal insulation in a single component. This eliminates the need for separate insulation layers and structural elements, simplifying the overall device architecture and manufacturing process.
Solution Approach 2:
The polypropylene material serves multiple functions simultaneously: it provides thermal insulation, structural integrity, and ease of manufacturing. This multi-functionality reduces the number of components needed and simplifies the overall device complexity.
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 material achieves high insulation values at given thicknesses, maintains structural integrity under pressure, is recyclable, and exhibits resistance to punctures and microwavability, outperforming traditional insulation materials like expanded polystyrene.
Implementation Method 1
A blowing agent in the form of an inert gas is introduced into a molten resin in the first extrusion stage
Implementation Method 2
cell-forming agents including at least one nucleating agent and a blowing agent
Data Source
AI summary
A formulation includes a base resin, a nucleating agent, and a blowing agent. The formulation can be used to form a container.