Cured Mineral Fibre Base Layer Compression for Top Layer Density
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Solution Overview
Problem
The existing method of forming multi-layered mineral fibre products requires processing of the top layer before re-joining it with the base layer, which is inefficient as it necessitates additional steps and resources.
Innovation Solution
A method where an uncured top layer web of mineral fibres is joined with a cured base layer web, and both are then cured in an oven, with the base layer acting as a backing layer to compress the top layer by at least 50%, eliminating the need for pre-compression of the top layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the top layer is separated and re-joined with the base layer using the known method, then a multi-layered product can be formed, but the top layer requires additional processing steps before re-joining which reduces productivity
Solution Approach 1:
The invention merges the compression of the top layer with the curing process by positioning the uncured top layer on the cured base layer and compressing it through the curing oven. This combines two separate operations (compression and curing) into one integrated process, eliminating the need for pre-compression steps and reducing overall processing complexity
Solution Approach 2:
The base layer is cured in advance before the top layer is applied to it. This preliminary curing of the base layer creates a stable, rigid substrate that can immediately serve as a compression mechanism for the top layer during the subsequent curing process, eliminating the need for separate compression equipment
2Manufacturing precision
If the top layer is compressed prior to joining and curing, then the top layer achieves the required density, but this requires additional compression equipment and processing steps
Solution Approach 1:
The cured base layer serves a dual function: it acts as both the substrate for the top layer and as the compression mechanism itself. The rigid, cured structure of the base layer provides the necessary compressive force to densify the uncured top layer during the curing process, eliminating the need for separate compression equipment
Solution Approach 2:
The cured base layer performs multiple functions simultaneously: it serves as the structural base layer, as the compression mechanism for densifying the top layer, and as the curing substrate. This multi-functionality eliminates the need for dedicated compression equipment and reduces overall device complexity
3Productivity
If the top layer is compressed by at least 50% upon entry into the curing oven, then the processing steps are reduced, but the base layer must have sufficient compression strength to withstand this compression
Solution Approach 1:
The base layer is cured in advance to develop its full compression strength before the top layer is applied and compressed. This preliminary curing ensures the base layer has the necessary mechanical properties to withstand the compressive forces during the subsequent curing process without deforming or failing
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 approach reduces processing steps and enhances the compression strength of the final product, achieving a density for the top layer that is two to three times that of the base layer, while maintaining the structural integrity of the base layer.
Implementation Method 1
the uncured top layer web is compressed by at least 50% upon entry into the curing oven
Implementation Method 2
curing the top layer web in a curing oven by transporting the assembled laminate into a curing oven
Data Source
AI summary
A method of forming a cured mineral fiber product which includes at least a top layer having mineral fibers and a base layer having mineral fibers. The method includes the steps of providing the top layer web including uncured mineral wool, providing the base layer web including cured mineral wool, joining the uncured top layer web and the cured base layer web to form an assembled laminate, and curing the top layer web in a curing oven by transporting the assembled laminate into a curing oven having an upper conveyor and a lower conveyor for curing the assembled laminate, the assembled laminate being positioned between the upper and lower conveyors. The uncured top layer web is compressed by at least 50% as it enters into the curing oven.