Thermally Insulating Polymer Mullions for Curtain Walls
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Curtain wall systems face challenges in achieving effective thermal insulation and structural integrity, particularly in using steel mullions and transoms, which require precise handling and installation to prevent exposure to the atmosphere and ensure durability.
Innovation Solution
Incorporating a thermally insulating fiberglass reinforced polymer component bonded to metal mullions or transoms using adhesives and fasteners, which covers the outer side and projects into gaps between panels, enhancing insulation and structural support while preventing exposure to the environment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If steel mullions and transoms are used in curtain wall systems, then structural strength and durability are improved, but thermal insulation performance deteriorates due to heat transfer through metal components
Solution Approach 1:
The patent applies composite materials by bonding a thermally insulating polymer component to a metal mullion or transom structure. The polymer component (made of materials like polyethylene, polypropylene, or PVC) is adhesively bonded to the metal framework, creating a composite structure that combines the high strength of metal with the thermal insulation properties of polymer, thereby resolving the contradiction between structural strength and thermal insulation performance
Solution Approach 2:
The patent uses an adhesive layer as an intermediary between the metal structure and the polymer component. This adhesive mediator not only bonds the two materials together but also provides an additional thermal break, reducing heat transfer through the metal components while maintaining structural integrity
2Strength
If fasteners are used to connect polymer components to metal structures, then bonding strength is improved, but exposure to the atmosphere during installation increases
Solution Approach 1:
The patent applies preliminary action by pre-positioning the polymer component onto the metal structure using adhesive bonding before final assembly. This allows the adhesive to cure and establish a strong bond in a controlled environment, reducing the need for subsequent exposure to atmospheric conditions during installation and minimizing risks associated with weather exposure
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 significantly improves the thermal insulation and structural integrity of curtain wall systems by isolating metal components from the atmosphere, reducing heat transfer, and providing enhanced support for panels, while also allowing for easier installation and reduced exposure risks.
Implementation Method 1
Incorporating a thermally insulating fiberglass reinforced polymer component bonded to metal mullions or transoms using adhesives and fasteners, which covers the outer side and projects into gaps between panels, enhancing insulation and structural support while preventing exposure to the environment.
Data Source
Figure 1
Figure 2
Figure 3A
AI summary
Window wall and curtain wall mullion or transom structures including a component made of a thermally insulating material covering substantially an entirety of an outer side of a metal structural segment where a first fastener passing through the metal structure and into the component is oriented generally parallel to the outer side or parallel to at least one outward facing surface of the metal segment. The insulating component includes a first slot and a second slot configure to receive fasteners where the slots are oriented generally perpendicularly. The component is devoid of penetrations passing through the component to the structure.