PVC Resin Composition for Primer-Free Bonding to Polyolefin
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Solution Overview
Problem
Vinyl chloride resin molded products exhibit poor adhesiveness to polyolefin substrates, necessitating primer treatment for effective bonding.
Innovation Solution
Incorporating chlorinated polyolefin into a vinyl chloride resin composition, with specific ratios and properties, to enhance adhesiveness to polyolefin substrates without the need for primer treatment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a polyolefin substrate is used as the substrate of a surface skin, then cost and ease of processing are improved, but adhesiveness between the vinyl chloride resin molded product and the polyolefin substrate deteriorates
Solution Approach 1:
The patent modifies the chemical composition parameters of the vinyl chloride resin by incorporating chlorinated polyolefin at specific weight ratios (0.1-50 parts per 100 parts of vinyl chloride resin). This parameter change enables the resin to achieve adequate adhesiveness to polyolefin substrates without requiring primer treatment, thus resolving the contradiction between ease of processing and adhesiveness.
Solution Approach 2:
The patent creates a composite material system by combining vinyl chloride resin with chlorinated polyolefin. This composite approach allows the molded product to maintain the processing advantages of vinyl chloride resin while gaining the adhesiveness needed for polyolefin substrates, eliminating the need for separate primer applications.
2Strength
If primer treatment is applied to the polyolefin substrate, then adhesiveness is improved, but manufacturing complexity and production time increase
Solution Approach 1:
The patent extracts and eliminates the primer treatment step from the manufacturing process by incorporating chlorinated polyolefin directly into the vinyl chloride resin composition. This removal of the primer application step reduces manufacturing complexity and production time while maintaining adequate adhesiveness.
Solution Approach 2:
The patent merges the adhesion-promoting function of primer with the base resin material itself by incorporating chlorinated polyolefin into the vinyl chloride resin composition. This consolidation eliminates the need for separate primer application steps, simplifying the manufacturing process while achieving the desired adhesiveness.
3Strength
If chlorinated polyolefin is added to the vinyl chloride resin composition, then adhesiveness to polyolefin substrate is improved, but composition complexity increases
Solution Approach 1:
The patent optimizes the composition parameters by specifying precise weight ratios for chlorinated polyolefin addition (0.1-50 parts per 100 parts of vinyl chloride resin) and controlling chlorine content (10-45 mass%). These parameter specifications ensure adequate adhesiveness while managing composition complexity through defined manufacturing guidelines.
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 vinyl chloride resin composition forms molded products with excellent adhesiveness to polyolefin substrates, enabling the production of laminates and automobile instrument panels with improved bonding properties.
Implementation Method 1
improve adhesiveness to a polyolefin substrate of a vinyl chloride resin molded product
Data Source
AI summary
Provided is a vinyl chloride resin composition that is capable of forming a vinyl chloride resin molded product having excellent adhesiveness to a polyolefin substrate. The vinyl chloride resin composition contains a vinyl chloride resin, a plasticizer, and a chlorinated polyolefin.