Base Material Sheet Processing with Alternating Core Winding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing processing method for base material sheets, which uses a roll-to-roll technique with a porous support material, faces issues with dimensional changes leading to distortions, folds, or wrinkles as the sheets are wound and processed, resulting in nonuniform treatment and reduced efficiency.
Innovation Solution
A method where the base material sheet and porous sheets are alternately wound and processed using different cores to manage dimensional changes, with each porous sheet holding a processing liquid, allowing continuous processing while minimizing defects and optimizing liquid usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the base material sheet is wound up by a single core and processed continuously, then productivity is improved, but dimensional changes cause distortion, folds, and wrinkles
Solution Approach 1:
The patent divides the winding system into multiple cores (first core, second core, third core) that independently hold the base material sheet at different stages. This segmentation allows each core to manage specific portions of the processing sequence, preventing dimensional changes from causing defects while maintaining continuous production capability.
Solution Approach 2:
The patent introduces intermediate winding steps where the base material sheet is temporarily held on intermediate cores between processing stages. These intermediate cores act as mediators that absorb dimensional changes and prevent them from propagating as defects, enabling continuous processing without compromising sheet quality.
2Manufacturing precision
If the base material sheet is held against dimensional changes during winding, then manufacturing precision is improved, but the complexity of the winding system increases
Solution Approach 1:
The winding system is segmented into multiple independent cores, each responsible for a specific function (initial winding, intermediate holding, final winding). This segmentation distributes the complexity across simple, modular components rather than requiring a single complex mechanism, making the system easier to control and maintain.
Solution Approach 2:
The patent employs periodic winding and unwinding actions between different cores in a cyclic manner. The base material sheet is periodically transferred between cores at controlled intervals, allowing dimensional changes to be managed in discrete steps rather than continuously, simplifying the control mechanism.
3Quantity of substance
If the porous sheet is used to hold processing liquid, then utilization efficiency of processing liquid is improved, but the risk of dimensional changes and defects increases
Solution Approach 1:
The processing system is divided into multiple stages with separate porous sheets for different processing liquids. Each porous sheet is independently managed on its own core, allowing optimized liquid retention for each specific processing step without the risks accumulating across the entire process.
Solution Approach 2:
The base material sheet is periodically exposed to different porous sheets containing different processing liquids at controlled intervals. This periodic exposure allows each processing liquid to be applied optimally without causing cumulative dimensional changes, maintaining sheet uniformity while maximizing liquid utilization efficiency.
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.