Extruded Roofing Modules with High Filler Content
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Solution Overview
Problem
There is a need for alternative roofing, cladding, and siding products that offer similar appearance and performance to traditional materials while being industrially producible in large quantities and manufactured in a more productive, efficient, and cost-effective manner.
Innovation Solution
The development of roofing, cladding, and siding modules composed of layers with high filler and reinforcement content, specifically extruded materials with at least 40% w/w filler and/or reinforcement, which are formed through a continuous process to eliminate weld lines and injection molding points, and feature three-dimensional surface features to simulate traditional materials like asphalt shingles or slate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional roofing materials (asphalt shingles, slate, tiles) are used, then aesthetic appearance and traditional performance characteristics are achieved, but manufacturing productivity and cost-effectiveness are reduced due to manual installation and limited scalability
Solution Approach 1:
The patent uses composite materials consisting of a polymer matrix combined with mineral fillers and reinforcements to create roofing modules that simulate traditional materials. This allows industrial manufacturing while achieving the appearance and performance of natural materials like slate and asphalt shingles, thereby improving productivity without sacrificing ease of manufacture.
Solution Approach 2:
The patent changes the physical and chemical parameters of the roofing material by using extrusion processes to create modules with controlled density, strength, and surface characteristics. This enables mass production of roofing products with consistent quality, resolving the contradiction between manufacturing productivity and ease of manufacture.
2Productivity
If roofing modules are produced with visible weld lines or injection molding points, then manufacturing efficiency is improved, but aesthetic appearance and product quality are degraded
Solution Approach 1:
The patent replaces traditional molding processes that create visible seams with an extrusion process that continuously forms roofing modules. This substitution eliminates weld lines and injection molding points, maintaining high manufacturing efficiency while achieving superior surface quality and aesthetic appearance.
3Object-generated harmful factors
If high filler content (at least 40% w/w) is used in the polymer layer, then material cost is reduced and thermal expansion is minimized, but structural strength and durability may be compromised
Solution Approach 1:
The patent creates a composite material system where mineral fillers (such as calcium carbonate, talc, or mica) are dispersed in a polymer matrix. The high filler content (at least 40% w/w) reduces thermal expansion and material cost, while the polymer binding agent and proper formulation maintain sufficient structural strength for roofing applications.
Solution Approach 2:
The patent applies different filler concentrations and types in different regions or layers of the roofing module to optimize both thermal expansion properties and structural strength. This local optimization allows high filler content in non-critical areas while maintaining strength where required.
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 provides durable, weather-resistant, and aesthetically pleasing modules with reduced thermal expansion, increased durability, and cost-effectiveness, while maintaining the appearance of traditional materials, and can be produced in longer lengths without visible weld lines or injection molding points.
Implementation Method 1
wherein at least a portion of the module comprises a layer so formed of an extruded material
Data Source
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AI summary
This invention relates to a roofing, cladding, or siding module, comprising an underlapping region extending from a head edge of the module and an exposed region extending from a foot edge of the module. The length of the foot edge defining the length of the module. The underlapping region is adapted to be substantially covered by the exposed region of an adjacent or overlapping module when installed on a building surface. The module is formed of at least one layer of extruded material. The layer so formed comprises at least 40% w/w filler and/or reinforcement, and one or more polymer(s).