Pelletized Thermoplastic Pavement Marking Composition
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Solution Overview
Problem
Conventional thermoplastic pavement marking materials are supplied in powdered form, making them difficult to load into road marking machines and posing safety hazards, while also being prone to dust generation.
Innovation Solution
A pelletizing system that mixes binder and filler materials with embedded reflective elements, heats them to create a homogenous molten mixture, extrudes it into pellets, and coats them with an anti-clumping agent for easy handling and application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If thermoplastic pavement marking materials are supplied in powdered form, then they can be easily manufactured and stored, but they are difficult to load into road marking machines and pose safety hazards due to dust generation
Solution Approach 1:
The patent changes the physical form parameter of the thermoplastic pavement marking material from powdered to pelletized. This parameter change resolves the contradiction by maintaining manufacturing simplicity while eliminating dust generation and improving ease of loading into road marking machines, as pellets are free-flowing and can be easily conveyed without creating airborne dust hazards
Solution Approach 2:
The patent segments the continuous powdered material into discrete pellet forms. This segmentation allows the material to be easily handled, stored, and loaded into marking machines without the dust generation problems associated with powdered form, while maintaining the same compositional properties and performance characteristics
2Ease of manufacture
If thermoplastic pavement marking materials are supplied in powdered form, then they can be easily stored, but they generate dust that poses safety hazards
Solution Approach 1:
The patent changes the physical form parameter from powder to pellets, which maintains storage simplicity while eliminating dust generation. The pelletized form provides free-flowing characteristics that facilitate easy storage and handling without creating airborne dust hazards that pose safety risks to workers and equipment
3Device complexity
If conventional thermoplastic mix is used, then the composition is simple, but it is difficult to load into road marking machines and creates safety issues
Solution Approach 1:
The patent changes the physical form parameter of the thermoplastic mix from powdered to pelletized, maintaining system simplicity in terms of composition while dramatically improving ease of operation during loading. The pelletized form flows freely and can be easily conveyed into road marking machines without the handling difficulties and safety issues associated with powdered material
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 pelletized thermoplastic pavement marking material reduces dust hazards, enhances safety, and provides a stable, efficient, and cost-effective solution for road marking applications with improved storage stability and consistency.
Implementation Method 1
heats them to create a homogenous molten mixture
Implementation Method 2
extrudes it into pellets
Data Source
AI summary
A composition of matter suitable for use as a road marking substance and a method thereof provides for the steps of mixing a binder mixture with a filler mixture, heating the mixed ingredients while mixing into a homogenous molten mixture and then extruding the molten mixture. The extruded material is cooled, cut into individual pellets, coated with an anti-clumping coating and packaged for use in making a road marking substance in situ. The binder can be alkyd-based or hydrocarbon based. The binder includes rosin resins, wax and a plasticizer, and a hydrocarbon resin is added for the hydrocarbon-based binder. The filler contains titanium dioxide, a pigment (if necessary) and ground calcium carbonate.