Firestop Bandage and Putty Ring for Thin Pipe Feedthroughs
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Solution Overview
Problem
Current fire-resistant sealing solutions for pipes and lines with diameters between 16 mm and 32 mm are oversized and require wet, unclean installations with long drying times, lacking an economical and easy-to-install option that meets the performance standards of larger diameter pipes for fire resistance and thermal insulation.
Innovation Solution
A method using a cut-to-length fire protection bandage with a putty ring for fire-resistant sealing, where the bandage is applied in a single layer around the line with a putty ring formed to seal the opening, allowing for immediate functionality without additional drying times and significant material savings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional fire protection bandage is used for pipes with diameter between 16 mm and 32 mm, then fire resistance performance can be achieved, but the solution becomes oversized and material consumption increases
Solution Approach 1:
The patent applies local quality by providing different fire protection solutions for different pipe diameter ranges. Specifically, it introduces a specialized fire protection bandage with width of 30-50 mm for small/thin pipes (16-32 mm), which is locally optimized for this specific application range, rather than using the oversized standard bandage (125 mm width) intended for larger pipes. This local optimization reduces material consumption while maintaining adequate fire protection performance for the specific pipe size category.
2Reliability
If standard sealing compounds are used for fire-resistant sealing, then fire resistance performance can be achieved, but the installation becomes wet and unclean with long drying times
Solution Approach 1:
The patent replaces the chemical/acrylate-based sealing compounds with a mechanically applied putty system. The putty is applied in a mechanically controlled manner using putty knives or similar tools, allowing for clean, precise application without the wet, messy characteristics of liquid sealing compounds. This mechanical substitution eliminates drying times and provides immediate functionality, while the putty itself provides the fire-resistant sealing performance.
3Reliability
If double-layer fire protection bandage installation is used, then fire resistance performance can be achieved, but installation complexity and time increase
Solution Approach 1:
The patent extracts and eliminates the unnecessary double-layer installation requirement for small/thin pipes (16-32 mm diameter). By introducing a specifically designed fire protection bandage with appropriate width (30-50 mm) and applying it as a single layer, the patent removes the complexity of double-layer installation while maintaining adequate fire protection performance for this specific pipe size category. The extraction principle here involves removing the excess layer that was previously necessary for larger pipes but is now unnecessary for smaller diameters.
4Reliability
If fire protection bandage with width of 125 mm is used for small pipes, then fire resistance performance can be achieved, but the solution becomes oversized and processing effort increases
Solution Approach 1:
The patent applies parameter changes by modifying the width parameter of the fire protection bandage from the standard 125 mm (designed for larger pipes) to a reduced width of 30-50 mm specifically for small/thin pipes (16-32 mm diameter). This parameter optimization reduces the amount of material that needs to be handled, positioned, and secured during installation, thereby reducing processing effort and improving ease of manufacture/installation while maintaining adequate fire protection coverage for the smaller pipe diameter.
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 method provides a simple, clean, and resource-efficient fire-resistant seal with reduced material consumption, achieving performance comparable to larger diameter pipe solutions, such as EI120 fire resistance classes, with minimal processing effort and no additional sealing compounds.
Implementation Method 1
a fire protection bandage (4) which comprises fire-retardant and/or intumescent material
Implementation Method 2
fire-resistant sealing... EI120 fire resistance classes
Implementation Method 3
a putty ring (6) which is formed from putty (5)... such that the opening (1) is sealed
Data Source
AI summary
A method can be used for fire-resistant sealing of an opening in a wall or ceiling, through which a line is passed. The method involves cutting a strip-shaped fire protection bandage to a length corresponding to a circumference of the line, with or without an overlap. The fire protection bandage contains fire-retardant and/or intumescent material. The method then involves placing the cut-to-length fire protection bandage around the line, to form a layer which only partially protrudes outward from the opening. The method further involves annularly applying a putty to part of the fire protection bandage protruding from the opening, to form a putty ring of a slightly larger outer diameter than the opening diameter, such that the putty ring closes the opening and extends slightly beyond the edge. The method finally involves pressing the putty ring against the fire protection bandage and the opening edge, to seal the line feedthrough.