Processing method of base material sheet, manufacturing method of modified base material sheet, base material with grafted polymer chain, and ion exchange membrane
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Solution Overview
Problem
The existing method for processing base material sheets using a roll-to-roll technique with a porous support material leads to dimensional changes, resulting in distortions, folds, or wrinkles as the sheets are wound and processed, which affects the uniformity and efficiency of the processing liquid utilization.
Innovation Solution
A processing method where the base material sheet and porous sheets are alternately wound and unwound by different cores to manage dimensional changes, using separate processing liquids held in each porous sheet to prevent defects and enhance processing efficiency, with the ability to replenish and control the liquid concentration and tensile forces to maintain sheet alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the base material sheet is wound up by a third core during processing, then continuous large-scale processing can be achieved, but dimensional changes cause distortion, folds or wrinkles
Solution Approach 1:
A porous sheet is introduced as an intermediary carrier that holds the processing liquid and is wound on a separate core from the base material sheet. This allows the processing liquid to be supplied uniformly to the base material sheet during continuous processing without the sheet itself being wound, thereby preventing dimensional changes and defects while maintaining continuous production capability.
2Quantity of substance
If the base material sheet is held by a porous sheet during processing, then processing liquid utilization efficiency is enhanced, but sheet dimension changes occur during processing
Solution Approach 1:
The porous sheet serves as a mediator that absorbs and holds the processing liquid, then transfers it uniformly to the base material sheet during processing. This intermediary approach ensures efficient processing liquid utilization while the base material sheet remains unwound and dimensionally stable throughout the process.
3Manufacturing precision
If the base material sheet is wound and processed together, then processing uniformity is maintained, but processing liquid consumption increases
Solution Approach 1:
A porous sheet is used as a holding layer that absorbs and retains the processing liquid through its porous structure. This allows the liquid to be supplied uniformly and efficiently to the base material sheet during processing, reducing overall liquid consumption while maintaining processing uniformity through controlled liquid distribution.
Data Source
AI summary
A processing method of a base material sheet includes winding out the base material sheet wound up by a first core and a first porous sheet wound up by a second core, winding up by a third core the base material sheet and the first porous sheet to be overlapped with each other, and processing the base material sheet by a first processing liquid held in the first porous sheet; and winding out the base material sheet and the first porous sheet overlappingly wound up by the third core, winding up the first porous sheet by the second core, and winding up the base material sheet by the first core.