Multicomponent Film Composition for Tailored Modulus and Tear Resistance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing aligners, whether monolayer or multilayer plastic sheets, lack the flexibility to tailor properties effectively, with multilayer sheets being complex and costly, and monolayer sheets having limited property customization.
Innovation Solution
A multicomponent film comprising two or more distinct polymers, with one dominant polymer and a minority component, allowing for tailored physical properties such as flexural modulus and tear resistance, produced through extrusion or lamination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multilayer sheet is used, then property tailoring freedom is improved, but manufacturing complexity and cost increase
Solution Approach 1:
The patent applies composite materials by blending two or more distinct polymer components (e.g., polyethylene and polypropylene) within a single-layer structure. This allows the material to exhibit combined properties of the different polymers, achieving property tailoring freedom similar to multilayer sheets while maintaining the simplicity of monolayer manufacturing processes.
Solution Approach 2:
The invention merges multiple polymer components into a single integrated film structure through blending. Instead of using separate layers that require complex lamination processes, the patent combines polymers at the molecular level to create a unified material that provides customized mechanical properties while simplifying manufacturing.
2Ease of manufacture
If monolayer sheet is used, then manufacturing simplicity is improved, but property tailoring freedom is limited
Solution Approach 1:
The patent utilizes parameter changes by adjusting the composition ratios, molecular weights, and types of polymer components in the blend. By varying these parameters, the film's mechanical properties such as tensile strength, elongation, and modulus can be customized for different applications while maintaining simple monolayer manufacturing processes.
Solution Approach 2:
The invention employs composite materials by creating a blended polymer system within the monolayer structure. This allows the single layer to exhibit multiple desirable properties from different polymers, overcoming the limitation of property tailoring in traditional monolayer sheets.
3Adaptability or versatility
If multilayer film with single polymer layers is used, then property customization is improved, but manufacturing complexity increases
Solution Approach 1:
The patent merges multiple polymer components into a single extrusion process, eliminating the need for separate extrusion and lamination steps required by multilayer films. The blended polymer mixture is extruded as one homogeneous material, significantly reducing manufacturing complexity while maintaining property customization capabilities.
Solution Approach 2:
The invention uses composite materials to achieve property customization within a single polymer matrix. By selecting and blending specific polymer components with desired properties, the film can be customized for various applications without requiring complex multilayer construction.
Data Source
AI summary
Provided are copolyester films comprising multicomponent compositions which exhibit improved durability and customizable modulus properties which can be useful in many applications, including formed articles for use in the dental appliance market.