Transfer Substrate Cleaning Line for Residual Catalyst Removal
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In the manufacturing of fuel cell membrane electrode assemblies, catalyst residue often remains on transfer substrates after the transfer process, which cannot be completely removed by self-adhesive films, leading to quality issues and potential facility shutdowns due to incomplete peeling.
Innovation Solution
A transfer substrate recycling apparatus and method involving a first pass line with a self-adhesive film for initial catalyst removal, followed by inspection and a second removal portion for residual impurities, ensuring thorough cleaning and preventing reattachment of catalyst to the substrate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a self-adhesive film is used to peel the catalyst from the transfer substrate, then the catalyst can be removed, but when a large amount of catalyst remains, it cannot be removed completely
Solution Approach 1:
The invention divides the recycling process into two distinct segments: a first removal portion that performs initial catalyst removal using a self-adhesive film, and a second removal portion that performs final cleaning. This segmentation allows each stage to be optimized for its specific function, ensuring complete catalyst removal while maintaining process reliability
Solution Approach 2:
The first removal portion performs preliminary catalyst removal before the substrate enters the second removal portion. By removing the bulk of the catalyst in advance, the second removal portion can focus on eliminating residual impurities, thereby achieving complete removal without overloading any single stage
2Manufacturing precision
If only a single removal method is used, then the process is simple, but residual catalyst remains on the transfer substrate
Solution Approach 1:
The recycling apparatus is segmented into two functional portions: the first removal portion with self-adhesive film for bulk catalyst removal, and the second removal portion for residual impurity elimination. This structural segmentation enables high surface cleanliness while maintaining reasonable system complexity through modular design
Solution Approach 2:
The self-adhesive film acts as an intermediary medium that facilitates catalyst transfer from the transfer substrate to the film in the first removal portion. This intermediary mechanism enables effective catalyst removal without requiring direct mechanical scraping or chemical treatment that would increase system complexity
3Productivity
If the catalyst is not completely removed, then the transfer substrate can be reused, but quality issues occur and facility shutdowns may happen
Solution Approach 1:
The dual removal portions work in sequence to perform preliminary and final cleaning actions before substrate reuse. The first removal portion handles bulk catalyst removal to enable reuse, while the second removal portion ensures complete cleanliness to prevent quality issues and facility shutdowns
Solution Approach 2:
The system incorporates an inspection portion that examines the transfer substrate after catalyst removal and provides feedback to determine whether additional removal is needed. This feedback mechanism ensures substrate quality meets reuse standards while maximizing the substrate reuse rate by avoiding unnecessary additional processing
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 effectively removes residual catalyst from transfer substrates, improving the quality of recycled substrates and preventing facility disruptions by ensuring complete peeling and reuse of expensive materials like PTFE.
Implementation Method 1
removing an impurity on the transfer substrate by transferring the impurity onto the adhesive material such that the adhesive material is brought into contact with the transfer substrate
Data Source
AI summary
A transfer substrate recycling apparatus is a transfer substrate recycling apparatus including: a first pass line in which an elongated belt-shaped transfer substrate is unwound and conveyed; a second pass line in which an elongated belt-shaped self-adhesive film is unwound and conveyed; a controlling portion configured to control the conveyance of the transfer substrate; a first removal portion provided in the first pass line, the first removal portion being configured to remove an impurity on the transfer substrate by transferring the impurity onto the self-adhesive film; an inspection portion provided on a downstream side from the first removal portion in the first pass line, the inspection portion being configured to inspect a surface of the transfer substrate; and a second removal portion provided in the first pass line, the second removal portion being configured to remove a residual impurity detected by the inspection portion.