Composite Panel Sealing Tape Intumescent Fire Protection
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Solution Overview
Problem
Composite panels face challenges in achieving reliable fire protection and mechanical stability at joints, especially with large panel heights and under high joining forces, due to limitations in fire-resistant sealing tapes and intumescent materials, which can lead to impaired fire protection and mechanical instability during fires.
Innovation Solution
Incorporating an intermediate layer made of non-combustible material between the sealing tape and the composite panel core, with the intumescent strip positioned on the side facing away from the core, to maintain the intumescent material within the joint area and enhance mechanical stability, preventing spatial escape and ensuring effective fire protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sealing tapes with intumescent material are used to achieve fire protection, then fire resistance is improved, but mechanical stability under joining forces deteriorates
Solution Approach 1:
The sealing tape is divided into distinct functional layers: a mechanically stable base layer (foam material or fiberboard) and a fire-protection layer (intumescent strip). This segmentation allows each layer to optimize its specific function without compromising the other - the base layer provides mechanical stability under joining forces while the intumescent layer delivers fire protection.
Solution Approach 2:
The sealing tape uses composite construction combining different materials with complementary properties - foam material or fiberboard for mechanical stability and intumescent material for fire resistance. This composite structure resolves the contradiction by integrating both requirements into a single functional component.
2Reliability
If intumescent strips are made long to ensure fire protection coverage, then fire resistance is improved, but positional stability under joining forces deteriorates
Solution Approach 1:
The sealing tape is divided into distinct functional layers: a mechanically stable base layer (foam material or fiberboard) and a fire-protection layer (intumescent strip). This segmentation allows each layer to optimize its specific function without compromising the other - the base layer provides mechanical stability under joining forces while the intumescent layer delivers fire protection.
Solution Approach 2:
The base layer acts as an intermediary between the intumescent strip and the panel core, providing mechanical support and positional stability to the intumescent material during the joining process, thereby preventing unwanted displacement while maintaining fire protection functionality.
3Ease of manufacture
If sealing tape height is reduced to accommodate panel design, then ease of manufacture is improved, but fire protection capability deteriorates
Solution Approach 1:
The sealing tape features localized concentration of fire-protection material (intumescent strip) at the critical joint area where fire protection is most needed, while the overall tape height remains compact. This local quality approach ensures effective fire protection without requiring excessive height, maintaining ease of manufacture and installation.
Solution Approach 2:
The sealing tape uses composite construction combining different materials with complementary properties - foam material or fiberboard for mechanical stability and intumescent material for fire resistance. This composite structure resolves the contradiction by integrating both requirements into a single functional component.
4Use of energy by stationary object
If reactive foam material is used for panel core to achieve insulation, then thermal insulation is improved, but chemical compatibility with intumescent material deteriorates
Solution Approach 1:
The base layer acts as an intermediary between the intumescent strip and the panel core, providing mechanical support and positional stability to the intumescent material during the joining process, thereby preventing unwanted displacement while maintaining fire protection functionality.
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 a reliable fire protection seal and maintains mechanical stability during fires, ensuring compliance with fire protection standards like F30 or F90, even with large panel heights and high joining forces, by holding the intumescent material in place and preventing undesirable changes in the intumescent strip's position.
Implementation Method 1
the increase in volume of the intumescent material, which expands under the influence of heat
Implementation Method 2
the sealing tape also has to be compressed from its completely reset starting position to the desired degree of compression, for example to approx. 50% of its starting height
Data Source
Figure 1a~1b
Figure 1c
Figure 2a~3
AI summary
The invention relates to a composite panel for constructing a wall or ceiling area of a building by combining structurally identical panels by butt-joining them in a single plane. The composite panel has two opposing large surfaces and connecting end faces, and at least two complementary joining areas on the end faces for connecting the panels, forming a joint between them. The composite panel has a core made of a thermal insulation material and facing layers of a non-combustible material arranged on both sides of the core. A sealing strip is arranged on at least one end face of the composite panel, which seals the joint when the panels are joined. The sealing strip has a compressible soft foam body with a broad side facing the panel core and a broad side facing away from it, and preferably with a facing layer arranged on the broad side facing the core.According to the invention, an intermediate layer made of a non-combustible material is arranged at least partially covering the end face of the panel core towards the joint, which is fixed to one of the cover layers of the panel and is arranged between the sealing tape and the composite panel core, wherein the sealing tape has an intumescent strip which is arranged adjacent to the intermediate layer on the side of the intermediate layer facing away from the panel core.