Swelling Seal with U-Shaped Spacer for Fire-Resistant Façade
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Solution Overview
Problem
Existing fire-resistant façade constructions with swelling seals face challenges such as the need for surface cleaning and degreasing, poor adhesion in adverse weather conditions, and increased time and difficulty in mounting panels.
Innovation Solution
The use of a swelling seal with two heat-swelling strips interconnected by a U-shaped spacer, which is designed to fit snugly into the screw channels of the façade profiles, eliminating the need for gluing and allowing for application in various weather conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If swelling seals are glued on aluminium profiles, then the swelling seals are fixed in position, but surface cleaning and degreasing are required and adhesion is poor in adverse weather conditions
Solution Approach 1:
The patent replaces the chemical bonding system (glue) with a mechanical fastening system. The swelling seal incorporates a U-shaped profiled section that mechanically engages with the screw channel and ribs of the aluminium profile, eliminating the need for adhesive bonding and its associated surface preparation requirements.
Solution Approach 2:
The U-shaped profiled section acts as an intermediary element between the swelling seal and the aluminium profile. This intermediate mechanical structure facilitates reliable attachment without requiring direct chemical bonding between the swelling seal and the profile surface, thereby avoiding weather-related adhesion issues.
2Ease of manufacture
If swelling seals are glued separately, then the swelling seals can be applied, but the process is time-consuming and becomes difficult in adverse weather
Solution Approach 1:
The patent merges the swelling seal with the U-shaped profiled section into a single integrated component. This combination allows the swelling seal to be installed as one piece rather than requiring separate application of the seal and adhesive, significantly reducing installation time and eliminating weather constraints.
Solution Approach 2:
The U-shaped profiled section is pre-formed and integrated with the swelling seal during manufacturing. This preliminary preparation of the mechanical fastening structure eliminates the need for on-site surface preparation and adhesive application, allowing for quick installation in any weather conditions.
3Reliability
If swelling seals come loose before panel mounting, then the swelling seals were improperly attached, but this makes mounting panels more difficult
Solution Approach 1:
The mechanical engagement system provided by the U-shaped profiled section ensures reliable attachment of the swelling seal to the aluminium profile without the risk of coming loose. This secure mechanical fastening maintains proper panel mounting conditions throughout the installation process.
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
This solution simplifies the installation process, ensures reliable adhesion regardless of weather, and reduces the time and effort required for panel mounting, while maintaining the fire-resistant properties of the façade.
Implementation Method 1
the swelling strips are made of a material which in the event of a fire will swell up under the influence of the heat
Data Source
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AI summary
Swelling seal for a fire-resistant façade construction, containing two swelling strips (17) made of a material which in the event of a fire swell up under the influence of heat, characterised in that the swelling strips (17) are interconnected by at least one spacer (18) which holds the swelling strips (17) at a distance (A) from each other.