Melt-Bonding Road Marking Compound Using PET and Plasticizers
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Solution Overview
Problem
Conventional melt-bonding road marking paints require a thermoplastic resin, pigment, glass beads, and filler, which are costly and have limitations in terms of melting point and mechanical strength, necessitating a more efficient and cost-effective composition.
Innovation Solution
A method of manufacturing an improved melt-bonding road marking compound using a PET component, pigment, silica, and binder, where PET replaces some components to enhance durability and reduce costs, with specific proportions to maintain fluidity and application viability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional thermoplastic resin and filler are used in road marking paint, then the paint achieves adequate mechanical strength and wear resistance, but the cost increases and the melting point becomes too high for efficient processing
Solution Approach 1:
The patent changes the chemical composition parameters of the binder system by incorporating plasticizers (adipic acid, sebacic acid, phthalic acid) into the thermoplastic resin matrix. This modification lowers the melting point from 500°F to 430°F, enabling more efficient processing while maintaining mechanical properties.
Solution Approach 2:
The patent creates a composite binder system combining thermoplastic resin with plasticizer additives. This composite approach allows the material to exhibit both the structural integrity of the resin and the lower melting point characteristic of the plasticizer, resolving the contradiction between strength and processability.
2Strength
If conventional thermoplastic resin and filler are used in road marking paint, then the paint achieves adequate mechanical strength and wear resistance, but the cost increases due to expensive resin materials
Solution Approach 1:
The patent replaces expensive thermoplastic resin with cheaper alternative materials including pulverized plastic waste and organic binder systems. These lower-cost materials achieve comparable mechanical strength when combined with appropriate plasticizers and fillers, significantly reducing manufacturing costs.
Solution Approach 2:
The patent modifies the binder composition parameters by using plasticized organic binders instead of conventional thermoplastic resin. This substitution maintains the necessary mechanical strength and adhesion properties while reducing material costs by over 75% compared to traditional formulations.
3Duration of action of stationary object
If filler is used in conventional road marking paint to ensure mechanical strength and wear resistance, then the paint achieves adequate durability, but the formulation complexity increases and processing becomes more difficult
Solution Approach 1:
The patent extracts and eliminates the filler component from the traditional four-component formulation (resin, pigment, glass beads, filler). By using plasticized organic binders that inherently provide mechanical strength, the formulation is simplified to three components: binder, pigment, and glass beads, reducing complexity while maintaining durability.
Solution Approach 2:
The patent makes the organic binder system multi-functional by selecting plasticizers that simultaneously provide flexibility, adhesion, and mechanical strength. This eliminates the need for separate filler materials, as the binder itself performs the structural support function previously requiring filler additives.
Data Source
AI summary
A method of manufacture for an improved composition for melt-bonding road marking compound is disclosed. Comprising preparing a PET component from pulverized plastic. Combining the PET component, a pigment component, a filler component, a silica component and a binder component to form a road marking compound. Melting the road marking compound form the melt-bonding road marking compound. Selecting an amount of the PET component to maximize PET in the melt-bonding road marking compound while ensuring the melt-bonding road marking compound remains liquid for application to a road surface.