Composite Process Belt Structure for Stable Non-Stick Surfaces
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Solution Overview
Problem
Glass fibers in process belts can shift, leading to instability and contact issues with materials being treated, despite bonding with coatings, which affects the performance and longevity of the belts.
Innovation Solution
Incorporating metal fibers in the longitudinal direction of the process belt, with a surface structure dominated by glass fibers, ensures stability and prevents slipping, while metal fibers are arranged smaller in diameter and behind the surface to avoid contact with the treated material, using a fabric structure with metal wires or ropes and a non-stick fluoropolymer coating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If glass fibers are incorporated into the process belt to ensure gentle contact with material, then the non-stick property is improved, but the glass fibers shift within the belt structure leading to instability
Solution Approach 1:
The patent combines glass fibers with metal fibers to create a composite fabric structure. The metal fibers are integrated into the fabric base material, providing structural stability and preventing glass fiber shifting, while the glass fibers maintain their non-stick surface properties. This composite approach resolves the contradiction by combining materials with complementary properties.
Solution Approach 2:
The glass fibers are pre-integrated into the fabric structure during manufacturing, with metal fibers positioned to prevent shifting before the belt is put into service. This preliminary structuring ensures both the non-stick property and positional stability are established before use, eliminating the shifting problem that occurs with later bonding attempts.
2Stability of the object's composition
If metal fibers are added to prevent glass fiber shifting, then the structural stability is improved, but the metal fibers may contact the treated material causing adhesion issues
Solution Approach 1:
The patent applies different properties to different parts of the fabric structure. Metal fibers are positioned in the interior layers where they provide structural stability without contacting the treated material. Glass fibers form the outer surface layer where they provide the non-stick property. This spatial differentiation of material functions resolves the contradiction between stability and adhesion prevention.
Solution Approach 2:
The patent uses a multi-layer fabric construction where metal and glass fibers are arranged in different spatial dimensions and layers. The metal fibers are embedded in the base fabric structure while glass fibers form the outer surface, creating a three-dimensional arrangement that allows each fiber type to perform its specific function without interference.
3Stability of the object's composition
If glass fibers are bonded with coating to prevent shifting, then the fiber position stability is improved, but the coating may not completely eliminate shifting and adds complexity
Solution Approach 1:
The fabric structure with metal and glass fibers is pre-assembled during manufacturing with proper fiber positioning and integration. This preliminary structuring eliminates the need for subsequent coating applications to prevent shifting, as the structural design itself provides the necessary stability. The complexity is reduced by solving the problem at the design stage rather than adding post-processing steps.
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 stable and non-stick surface for the process belt, preventing material adherence and maintaining belt properties over prolonged use, particularly suitable for dryers in the nonwovens industry with high air permeability and minimal imprint risk.
Implementation Method 1
PTFE-coated glass fibers prevent the product being processed from sticking to the belt
Implementation Method 2
The metal fibers arranged longitudinally in the process belt ensure that the glass fibers do not slip laterally and are held firmly within the surface structure
Implementation Method 3
These belts can be air-permeable
Data Source
Figure 1~2
Figure 3
AI summary
The invention relates to a process belt having a planar structure which is in the form of an endless belt having an inner and an outer surface, wherein the outer surface comprises glass fibres. The problem addressed by the invention is that of further developing a generic process belt comprising glass fibres such that the properties of said belt do not change even after prolonged use. This problem is solved by positioning metal fibres in the longitudinal direction of the process belt.