Gutter Guard Mesh Adhesive System for UV and Ember Resistance
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Solution Overview
Problem
Existing gutter guard systems face premature adhesive failure due to inadequate UV stability and insufficient strength of materials, particularly in harsh environments and high bushfire regions, leading to unsatisfactory performance and longevity issues.
Innovation Solution
A gutter guard mesh featuring a heavyweight stainless steel or aluminium mesh with a solventless UV-cured acrylic foam tape on one edge and a butyl tape on the opposing edge, both with protective laminates, providing multiple adhesive interfaces for enhanced durability and resistance to UV damage and ember attacks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If lightweight fibreglass mesh with double sided adhesive is used, then ease of application is improved, but durability and UV stability deteriorate resulting in premature bonding failure
Solution Approach 1:
The patent changes the adhesive parameters by transitioning from standard double-sided adhesive to a multi-layer system comprising UV stabilised adhesive, foam tape for pressure distribution, and protective laminate. This parameter change maintains ease of application while dramatically improving bonding durability and UV resistance.
Solution Approach 2:
The patent applies composite materials by combining multiple adhesive layers (UV stabilised adhesive, foam tape) with protective laminate and mesh materials. This composite structure provides both ease of application and enhanced durability, resolving the contradiction between operational ease and bonding reliability.
2Strength
If thicker adhesive tapes are used to address bond failure, then adhesive strength is improved, but manufacturing complexity and product stability deteriorate due to laminate separation
Solution Approach 1:
The patent segments the adhesive system into distinct functional layers: UV stabilised adhesive layer, foam tape layer for pressure distribution, and protective laminate. This segmentation allows each layer to perform its specific function optimally without the manufacturing complexities of a single thick adhesive tape.
Solution Approach 2:
The patent applies local quality by giving each layer specific properties tailored to its function: UV stabilised adhesive for bonding durability, foam tape for pressure distribution and flexibility, and protective laminate for environmental resistance. This localized optimization achieves high adhesive strength without manufacturing complexity.
3Object-affected harmful factors
If heavy duty stainless steel mesh is used to resist ember attack, then fire resistance is improved, but adhesive bond strength deteriorates due to excessive pressure on bonding
Solution Approach 1:
The patent introduces foam tape as an intermediary layer between the heavy duty stainless steel mesh and the adhesive system. This intermediary distributes the pressure from the rigid mesh, preventing bond failure while maintaining fire resistance.
Solution Approach 2:
The patent creates a composite structure combining heavy duty stainless steel mesh for fire resistance with a multi-layer adhesive system including foam tape and UV stabilised adhesive. This composite approach maintains both fire resistance and adhesive bond strength.
4Reliability
If physical fastening accessories are used to prevent bond failure, then bonding reliability is improved, but installation complexity and potential roof damage increase
Solution Approach 1:
The patent replaces the mechanical fastening system with a chemically-based multi-layer adhesive system. This substitution maintains bonding reliability while eliminating installation complexity and potential roof damage associated with physical fasteners.
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 ensures a robust and durable adhesive system that maintains adhesion over time, effectively blocking debris and embers while allowing rainwater to pass through, with improved resistance to UV damage and increased longevity.
Implementation Method 1
A first edge of the mesh is built up with a layer of differing adhesives of varying qualities have allowed for the necessary flexibility and compliance of the overall adhesive
Implementation Method 2
The foam tape is characterised by a solventless UV cured acrylic polymer core of about 1000 microns having visco-elastic properties
Implementation Method 3
a solventless UV cured acrylic foam tape
Data Source
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AI summary
A gutter guard mesh for application to the gutter/roof interface of a roof comprising a length of woven mesh or the like having an array of apertures dimensioned to maximise traversal by rain water and minimise traversal of accumulated debris from said roof wherein at least a first edge of said mesh is fitted on a first side with a double sided acrylic foam closed cell tape having acrylic adhesive on both sides and on a second opposing side with a double sided butyl tape wherein the free side of said foam tape is available for adherence to said gutter via said acrylic adhesive and the free side of said butyl tape is available for adherence of a protective laminate.