Depolymerized Polymer Encapsulation for Safer Modifier Granules
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Solution Overview
Problem
Existing methods for encapsulating modifiers in formulations, such as asphalt, are cumbersome, costly, and pose safety and environmental hazards due to the use of powder forms, requiring expensive equipment and complex blending processes.
Innovation Solution
Encapsulating modifiers within a depolymerized product, such as polyethylene or polystyrene, to create encapsulated-modifier granules that can be uniformly dispersed in formulations, reducing the need for separate addition and handling of modifiers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If modifiers are added in powder form to formulations, then the formulation can be modified with desired properties, but safety hazards and environmental impacts increase due to flammability and respiratory issues
Solution Approach 1:
The patent encapsulates modifiers within a depolymerized product shell, creating a nested structure where the modifier core is contained inside the shell. This nesting approach allows the modifier to be delivered to the formulation without direct handling of loose powder, thereby maintaining formulation modification capabilities while eliminating safety hazards associated with powder form.
Solution Approach 2:
The patent uses a depolymerized product to form a shell around the modifier. This shell acts as a protective barrier that contains the modifier during storage and handling, preventing direct exposure to hazardous powder while still allowing the modifier to be released into the formulation when needed.
2Reliability
If traditional encapsulation methods using asphalt or plastic as shell are used, then modifiers can be contained, but difficulty in blending and forming solid stable products for bulk storage increases
Solution Approach 1:
The patent changes the key parameter of the shell material from traditional asphalt or plastic to a depolymerized product. This parameter change fundamentally alters the properties of the encapsulation material, making it easier to blend and form into solid stable granules suitable for bulk storage, while still maintaining effective modifier containment.
3Manufacturing precision
If multiple modifiers are added independently into formulations, then each modifier can be controlled, but manufacturing cost and time increase
Solution Approach 1:
The patent combines multiple modifiers into a single encapsulated granule structure, where multiple modifier cores are contained within one shell. This merging approach allows multiple modifiers to be added to the formulation simultaneously as a single unit, maintaining concentration control while significantly reducing manufacturing steps, time, and cost.
Solution Approach 2:
The encapsulated granule structure serves multiple functions: it contains and protects multiple different modifiers, controls their release into the formulation, and provides a uniform dosage unit. This multi-functionality eliminates the need for separate handling of each modifier, thereby reducing manufacturing complexity.
4Reliability
If polymer or mineral based modifiers are used, then desired formulation properties can be achieved, but expensive equipment and safety systems are required
Solution Approach 1:
The depolymerized product shell provides a flexible encapsulation solution that contains the modifier during storage and handling. This shell structure eliminates the need for specialized equipment for powder handling, dust mitigation, and fire prevention, while still enabling the formulation to achieve desired properties through modifier incorporation.
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 encapsulation process enhances uniform dispersion, improves formulation stability, reduces manufacturing costs, and minimizes environmental impact by eliminating the use of hazardous powders, while maintaining modifier integrity and improving formulation properties.
Implementation Method 1
Encapsulation of one material (the core) by another material (the shell) can help contain, protect, and distribute the core material during incorporation into a formulation
Data Source
AI summary
A method of encapsulating modifiers in a depolymerized product is disclosed. In some embodiments the material undergoing depolymerization is one of polypropylene, polystyrene, and/or polyethylene. In some embodiments, the material is composed, at least partially, of recycled material. In some embodiments, the encapsulated modifiers are added to a formulation such as an asphalt, plastic lumber, plastic wood composite, a plastic formulation, a rubber formulation, an ink formulation, a coating formulation, and/or an adhesive formulation.