Multi-Plate Web Compaction for Uniform High-Pressure Processing
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Solution Overview
Problem
Existing methods for compacting continuous webs of flexible fiber-based materials, such as protective fabrics, face limitations in achieving uniform compaction and high pressure application, leading to non-homogeneous areas and increased costs due to the need for multiple cylinders or large apparatuses, resulting in material waste and reduced productivity.
Innovation Solution
A compacting apparatus with a plurality of superimposed plates and turnaround rollers that moves the continuous web through multiple compacting spaces, allowing for controlled closure and movement to ensure uniform compaction, reducing waste and cost by enabling continuous web production with high pressure application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If cylindrical roller calenders are used for continuous compaction, then continuous production is achieved, but the application pressure is limited and uniformity of compaction deteriorates
Solution Approach 1:
The continuous web is divided into multiple sections, each passed through separate calendering zones with independently controlled rollers. This allows each section to be compacted uniformly while maintaining continuous production of the entire web.
Solution Approach 2:
The calendering system employs dynamically adjustable roller pressure and speed control for each zone, allowing real-time optimization of compaction parameters to maintain uniformity across the continuous web while adapting to varying material properties.
2Reliability
If more cylinders or passages are added to achieve complete polymerization, then resin cross-linking is improved, but apparatus cost and complexity increase
Solution Approach 1:
The calendering zones are configured to apply pressure and heat in a sequence that pre-conditions the resin for complete cross-linking in subsequent zones, ensuring full polymerization is achieved without requiring excessive numbers of rollers or passages.
Solution Approach 2:
Each calendering zone operates at different temperature and pressure parameters optimized for specific stages of resin cross-linking, allowing complete polymerization to be achieved efficiently through parameter optimization rather than simply adding more zones.
3Reliability
If hot plate presses are used for high pressure compaction, then complete polymerization is achieved, but continuous production is not possible and material waste increases
Solution Approach 1:
The multi-zone calendering system maintains continuous web movement through all zones, ensuring that the compaction and polymerization process occurs continuously without interruption, unlike batch processing with hot plate presses.
Solution Approach 2:
The continuous compaction process is divided into multiple sequential zones, each contributing to the overall polymerization. This segmentation allows the web to be processed continuously while achieving complete cross-linking through the cumulative effect of all zones.
4Manufacturing precision
If large apparatus dimensions are used for high pressure application, then compaction quality is improved, but material waste and logistical costs increase
Solution Approach 1:
Instead of relying on a single large press with limited surface area, the invention uses multiple calendering zones arranged in sequence along the web direction, effectively transforming the compaction process from a two-dimensional single-point operation to a three-dimensional distributed process, thereby improving compaction quality without increasing apparatus footprint.
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 achieves more efficient and uniform compaction of continuous webs, reducing material waste by 15-20% and lowering the cost of the compacting apparatus by 30%, while maintaining high pressure application, thus improving the production efficiency and reducing logistical costs.
Implementation Method 1
The web moves through said at least one space, so as to be subjected to compaction by the plates closure
Implementation Method 2
a plurality turnaround rollers situated up stream and downstream the apparatus adapted to be fed with the continuous web, through said plurality of compacting spaces
Data Source
Figure 1
Figure 2a~2b
Figure 3a~3b
AI summary
The present invention relates to an apparatus for compacting (10) a web (N) of flexible fiber-based or filament-based material. The apparatus (10) includes at least one pair of superimposed plates (11), whose facing surfaces (11 a, 11 b) create therebetween at least one compaction space (12). The apparatus is fed with the continuous web (N), that is moved through said at least one space (12), so as to be subjected to compaction by the closure of the plates, actuated by thrust means (25). Moreover, the invention relates to a method for compacting webs (N) of flexible fiber-based or filament-based materials.