Plastic Film with Low Breakdown Voltage
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Solution Overview
Problem
Existing plastic films with antistatic properties face challenges in achieving low breakdown voltage without compromising transparency and mechanical properties, especially when high conductive carbon loads are difficult to produce and deteriorate film quality.
Innovation Solution
A plastic film structure comprising an outer and inner layer with 0.1-15% polyether copolymer and at least one intermediate layer with polyether copolymer and/or thermoplastic metal compounds, achieving a breakdown voltage of less than 10 KV while maintaining high oxygen and water vapor barrier properties and transparency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conductive carbon is added to reduce breakdown voltage, then breakdown voltage is reduced, but transparency is destroyed
Solution Approach 1:
The patent changes the chemical composition parameter by replacing conductive carbon with polyether copolymer and thermoplastic metal compound, achieving low breakdown voltage while preserving transparency. The specific formulation (0.1-15% polyether copolymer in outer/inner layers, polyether copolymer and/or thermoplastic metal compound in intermediate layers) optimizes electrical properties without compromising optical properties.
Solution Approach 2:
The patent uses a composite material system consisting of multiple layers with different compositions: outer and inner layers contain polyether copolymer, while intermediate layers contain polyether copolymer and/or thermoplastic metal compound. This multi-layer composite structure achieves both low breakdown voltage and high transparency by distributing functional requirements across different layers.
2Reliability
If heavy loads of conductive carbon are used to reduce breakdown voltage, then breakdown voltage is reduced, but mechanical properties are deteriorated
Solution Approach 1:
The patent changes the additive type and concentration parameters by using polyether copolymer (0.1-15% by weight) instead of heavy conductive carbon loads. This parameter change achieves the required breakdown voltage reduction while maintaining mechanical integrity, as the polyether copolymer integrates better with the polymer matrix and does not compromise structural strength.
Solution Approach 2:
The patent applies different compositions to different layers: outer and inner layers contain 0.1-15% polyether copolymer, while intermediate layers contain polyether copolymer and/or thermoplastic metal compound. This local differentiation allows optimization of electrical properties in specific layers without compromising the mechanical properties of the overall film structure.
3Reliability
If conductive carbon is added to achieve antistatic properties, then breakdown voltage is reduced, but production difficulty increases
Solution Approach 1:
The patent changes the material composition parameter by replacing conductive carbon with polyether copolymer and thermoplastic metal compound, which are easier to process and disperse. The specified concentration ranges (0.1-15% polyether copolymer) optimize both electrical performance and manufacturability, avoiding the production difficulties associated with heavy carbon loads.
Solution Approach 2:
The patent employs a multi-layer composite structure where each layer has a specific composition optimized for its function. The outer and inner layers contain polyether copolymer for electrical properties, while intermediate layers contain polyether copolymer and/or thermoplastic metal compound for adhesion and barrier properties. This structured composite approach simplifies production by assigning specific functions to specific layers, making the manufacturing process more controllable and easier to optimize.
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 film effectively reduces breakdown voltage to less than 10 KV, maintains transparency, and enhances mechanical properties, offering a suitable alternative to conductive black films where carbon addition is not desired or feasible.
Implementation Method 1
The film effectively reduces breakdown voltage to less than 10 KV... comprising an outer and an inner layer comprising from 0.1 to 15% by weight polyether copolymer, and at least one intermediate layer comprising polyether copolymer and/or thermoplastic metal compound
Data Source
AI summary
The invention relates to a plastic film having a breakdown voltage of less than 10 KV, comprising an outer and an inner layer comprising from 0.1 to 15% by weight polyether copolymer, and at least one intermediate layer comprising polyether copolymer and/or thermoplastic metal compound.