Decorative Sheet Metal Phosphinate Retardance for Sharp Patterns
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Solution Overview
Problem
Existing decorative sheets lack sufficient flame retardance to prevent fire spread and maintain pattern clarity and sharpness, with halogen-based and metal hydroxide-based flame retardants being environmentally undesirable, and phosphoric-acid-ester-based flame retardants causing transparency and color issues.
Innovation Solution
A decorative sheet comprising thermoplastic resin layers with a metal phosphinate-based flame retardant, combined with polyolefin-based and polyester-based resins, to enhance flame retardance and maintain pattern clarity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If phosphoric-acid-ester-based flame retardant is used to achieve flame retardance, then burning is suppressed, but transparency is impaired and coloring occurs resulting in reduced pattern sharpness
Solution Approach 1:
The patent changes the chemical parameter of the flame retardant from phosphoric-acid-ester-based to metal phosphinate-based compounds. This parameter change maintains flame retardant effectiveness while eliminating the side effects of transparency impairment and coloring that occur with phosphoric-acid-ester-based flame retardants, thus preserving pattern sharpness.
Solution Approach 2:
The patent replaces environmentally harmful halogen-based and antimony-based flame retardants with metal phosphinate-based flame retardants. This substitution eliminates harmful substances while maintaining flame retardance, resolving the contradiction between reliability and environmental harm.
2Reliability
If metal hydroxide-based flame retardant is used to achieve flame retardance, then burning is suppressed, but large amounts must be added which impairs transparency
Solution Approach 1:
The patent changes the chemical composition parameter from metal hydroxide-based to metal phosphinate-based flame retardants. Metal phosphinates achieve flame retardance at lower concentrations compared to metal hydroxides, thus maintaining transparency while providing effective fire protection.
3Reliability
If halogen-based flame retardant is used to achieve flame retardance, then burning is suppressed, but environmental harm occurs
Solution Approach 1:
The patent replaces environmentally harmful halogen-based and antimony-based flame retardants with metal phosphinate-based flame retardants. This substitution eliminates harmful substances that cause environmental pollution while maintaining flame retardant effectiveness, thus resolving the contradiction between reliability and environmental harm.
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 decorative sheet achieves excellent flame retardance, preventing fire spread and maintaining high sharpness with clear patterns, while minimizing discoloration.
Implementation Method 1
at least one of the thermoplastic resin layers contains a metal phosphinate-based flame retardant
Data Source
AI summary
The present invention provides a decorative sheet with excellent flame retardance and high sharpness such that patterns are clearly visible and discoloration is suppressed. The present invention provides a decorative sheet characterized by comprising one or more thermoplastic resin layers selected from the group consisting of a transparent resin layer, a base material sheet, and a synthetic-resin backer layer, wherein (1) at least one of the thermoplastic resin layers contains a metal phosphinate-based flame retardant; and (2) the transparent resin layer and the base material sheet contain at least one resin selected from the group consisting of polyolefin-based resins and polyester-based resins.