Polymer Film Drying to Reduce Solvent for Tenter-Free Curing
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Solution Overview
Problem
The existing methods for manufacturing polymer films are costly and require expensive high-temperature heat treatment equipment, such as tenter devices, which are difficult to operate and result in unsatisfactory heat resistance.
Innovation Solution
A method for manufacturing polymer films that involves a drying process to achieve a residual solvent content of 30% or less in the precursor film, allowing for curing without the need for a tenter device, using a drying apparatus like a belt or drum device and a curing apparatus without a tenter device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a heat-treatment tenter device is used for high-temperature heat treatment, then the polymer film can be manufactured with good heat resistance, but the manufacturing cost increases significantly and operational difficulty increases
Solution Approach 1:
The patent applies preliminary action by performing a drying process before heat treatment to remove solvent from the polymer precursor. By drying the precursor to reduce solvent content, the subsequent heat treatment can be performed at lower temperatures without requiring expensive tenter devices, while still achieving the desired heat resistance in the final polymer film.
2Reliability
If a heat-treatment tenter device is used, then the polymer film achieves good heat resistance, but the operational skill requirement increases and the process becomes more difficult to operate
Solution Approach 1:
The drying process is performed as a preliminary step before heat treatment. By removing solvent through drying, the subsequent heat treatment becomes simpler and can be performed in ordinary equipment without requiring highly skilled operators to manage complex tenter devices, thus reducing operational skill requirements while maintaining heat resistance.
3Ease of manufacture
If the solvent content in the precursor film is reduced to 30% or less through drying, then expensive tenter devices are not needed, but the drying process must be carefully controlled
Solution Approach 1:
The patent applies parameter changes by controlling the drying process to achieve a specific solvent content range (30% or less) in the precursor film. By adjusting drying parameters such as temperature, time, and atmosphere, the solvent content is precisely controlled to enable subsequent heat treatment without tenter devices, thus reducing equipment cost while maintaining manufacturing precision.
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
This approach enables the easy and cost-effective production of polymer films with high yield, minimizing contraction during curing and eliminating the need for expensive heat treatment equipment.
Implementation Method 1
drying a polymer precursor to form a precursor film... the precursor film may have a residual solvent content of 30% or less after drying
Implementation Method 2
curing the precursor film to form a polymer film... curing the precursor film using the curing apparatus to form a polymer film
Data Source
AI summary
The present invention provides a method for manufacturing a polymer film, the method comprising the steps of: drying a polymer precursor to form a precursor film; and curing the precursor film to form a polymer film, wherein the drying is performed such that the content of a solvent remaining in the precursor film after the drying is 30% or less.