Storm Panel UV Stabilization and Haze Control
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Solution Overview
Problem
Storm panels made from transparent materials face issues with visual appearance due to manufacturing-induced haze and blemishes, and structural performance due to thickness variations, which affect their weatherability and durability.
Innovation Solution
A storm panel comprising a polymeric sheet with a substrate layer and top and bottom layers containing ultraviolet light stabilizers, manufactured through a process involving extrusion and forming techniques that maintain uniform thickness and minimize haze, ensuring the panel exhibits less than 4.0% haze and a yellowness index shift of less than 9.0 after 1,500 simulated hours of aging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If transparent polymeric materials are used for storm panels, then natural light transmission and visual appeal are improved, but manufacturing-induced haze and blemishes worsen visual appearance
Solution Approach 1:
The patent applies parameter changes by carefully controlling processing parameters including temperature, pressure, and cooling rates during extrusion and forming operations. The process maintains the polymer within a controlled temperature range to prevent degradation and haze formation while achieving the desired arced geometry and uniform thickness.
Solution Approach 2:
The patent employs an inert or controlled atmosphere during manufacturing to prevent oxidation and contamination of the polymer material. This is achieved through controlled extrusion and forming environments that minimize exposure to oxygen and other reactive substances that could cause blemishes or haze.
2Productivity
If conventional manufacturing processes are used for storm panels, then production efficiency is improved, but thickness uniformity and structural performance worsen
Solution Approach 1:
The patent applies preliminary action by pre-heating the polymer material to a controlled temperature before extrusion and maintaining specific temperature zones throughout the forming process. This preliminary preparation ensures uniform melting and flow characteristics, which directly result in consistent thickness throughout the final panel while maintaining efficient continuous production.
Solution Approach 2:
The patent implements feedback control through temperature monitoring and adjustment systems that continuously measure and regulate the polymer temperature during extrusion and forming. This feedback mechanism ensures that processing parameters remain within optimal ranges to produce uniform thickness while maintaining high production rates.
3Ease of manufacture
If polymeric materials without UV stabilizers are used, then material cost and processing simplicity are improved, but weatherability and resistance to yellowing worsen
Solution Approach 1:
The patent applies preliminary action by incorporating UV stabilizers into the polymer material before extrusion. This pre-mixing ensures uniform distribution of the stabilizing agents throughout the material, providing long-term protection against UV degradation and yellowing while maintaining relatively simple processing procedures.
Solution Approach 2:
The patent employs composite materials by combining the base polymeric material with UV stabilizing additives. This creates a composite structure where the stabilizers are distributed throughout the polymer matrix, providing enhanced weatherability and UV resistance while maintaining the fundamental processing characteristics of the base material.
4Shape
If manually operated storm panels are used, then aesthetic appearance and customization are improved, but ease of operation and response time worsen
Solution Approach 1:
The patent applies universality by designing storm panels that can be integrated with various operating mechanisms (manual, automatic, or hybrid). The panel structure itself is designed to be universally applicable, allowing the same aesthetically pleasing design to work with different actuation methods, thus providing both aesthetic appeal and operational convenience depending on user needs.
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 results in storm panels with improved weatherability, low haze, and uniform thickness, enhancing their visual appeal and structural integrity while reducing manufacturing-induced defects, offering efficient production methods that meet the desired properties.
Implementation Method 1
a polymeric top layer comprising an ultraviolet light stabilizer, and a polymeric bottom layer comprising an ultraviolet light stabilizer
Implementation Method 2
The process comprises extruding a polymer melt and forming a polymer sheet from the polymer melt
Data Source
AI summary
Disclosed herein are storm panels and methods for manufacturing the same. In one embodiment, the storm panel comprises a polymeric sheet having an arced geometry. The polymeric sheet comprises, a polymeric substrate layer, a polymeric top layer comprising an ultraviolet light stabilizer, a polymeric bottom layer comprising an ultraviolet light stabilizer. The storm panel has a uniform thickness, exhibits less than or equal to about 4.0% haze, and exhibits a yellowness index shift that is less than or equal to about 9.0 after 1,500 simulated hours of aging.