Goniochromatic Polyester Packaging via Oriented Polymethylpentene
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current packaging technologies face challenges in achieving a goniochromatic appearance with consistent color across viewing angles while maintaining high light blocking properties and low additive levels, often requiring high loading levels of incompatible polymers and opacifiers, which affect cost, physical properties, and recyclability.
Innovation Solution
A composition comprising a polyester combined with oriented polymethylpentene and a light scattering pigment, where the ratio of polymethylpentene to pigment is between 5:1 to 1:5, providing a goniochromatic appearance and excellent light blocking properties with reduced additive usage, thereby minimizing colorant and opacifier content.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If high loading levels of incompatible polymers and opacifiers are used to achieve goniochromatic appearance, then color consistency across viewing angles is improved, but cost increases and physical properties degrade
Solution Approach 1:
The patent changes the key parameter from high polymer loading (5-20%) to low polymer loading (0.1-5.0%), combined with optimized pigment loading (0.1-5.0%). This parameter change achieves goniochromatic appearance while maintaining physical properties, resolving the contradiction between color consistency and physical strength.
Solution Approach 2:
The patent creates a composite material system combining polyester with oriented polymethylpentene and light scattering pigments. This composite approach achieves the desired optical properties through synergistic interactions between components rather than relying on high concentrations of single materials, thus maintaining physical properties while achieving color consistency.
2Stability of the object's composition
If high loading levels of incompatible polymers and opacifiers are used to achieve goniochromatic appearance, then color consistency across viewing angles is improved, but manufacturing cost increases
Solution Approach 1:
The patent dramatically reduces the loading level of expensive incompatible polymers from 5-20% to 0.1-5.0%, combined with optimized pigment loading (0.1-5.0%). This parameter change achieves cost reduction while maintaining goniochromatic appearance and color consistency, resolving the contradiction between color consistency and manufacturing cost.
3Object-affected harmful factors
If high loading levels of colorants and opacifiers are used to achieve high light blocking, then light blocking performance is improved, but physical properties degrade
Solution Approach 1:
The patent optimizes the loading level of light scattering pigments to a low range (0.1-5.0%), combined with oriented polymethylpentene (0.1-5.0%). This parameter change achieves excellent light blocking performance while maintaining physical properties, resolving the contradiction between light blocking and physical strength.
Solution Approach 2:
The patent replaces the traditional approach of using high concentrations of absorbing pigments/dyes with a mechanism based on light scattering by oriented polymethylpentene and pigment particles. This substitution achieves high light blocking through scattering rather than absorption, preserving physical properties while blocking light effectively.
4Object-affected harmful factors
If high loading levels of colorants and opacifiers are used to achieve high light blocking, then light blocking performance is improved, but recyclability reduces
Solution Approach 1:
The patent reduces the loading level of pigments and colorants to low concentrations (0.1-5.0%), combined with oriented polymethylpentene (0.1-5.0%). This parameter change improves recyclability by minimizing contaminant levels while maintaining excellent light blocking performance, resolving the contradiction between light blocking and recyclability.
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 solution achieves a bright, whiter appearance with improved physical properties, recyclability, and reduced reflectivity, allowing for efficient light blocking without the trade-offs of increased cost, physical property degradation, or reduced recyclability.
Implementation Method 1
a light scattering pigment... These voids create a multitude of light scattering surfaces that reflect light in a non-uniform manner
Implementation Method 2
excellent light blocking properties... a light barrier of greater than 90 percent for light within the wavelength of between about 200 nm to about 1200 nm
Data Source
AI summary
White goniochromatic packaging material. The package wall containing a composition useful for blocking light in the spectrum ranges from about 200 nm to about 1200 nm. The composition has polyester, polymethylpentene, and a light scattering pigment. The composition optionally includes at least one other colorant. Each of the polymethylpentene and the light scattering pigment comprise about 0.1 to about 0.5 weight percent of the wall. The polyester and polymethylpentene are immiscible and when subjected to orientation stresses the composition produces a goniochromatic packaging article.