Laminated Film Void Layer Crosslinking Strength Porosity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for creating laminated films with void-provided layers face challenges in achieving both high film strength and a high proportion of void space, as catalysts used to improve film strength often decrease void space, and treatments like alkali application or ammonia gas exposure are inefficient or time-consuming.
Innovation Solution
A laminated film is produced by forming a void-provided structure on a resin film and inducing a crosslinking reaction using a crosslinking reaction accelerator generated by light irradiation or heating, with multiple stages of crosslinking to enhance film strength without significantly reducing void space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a catalyst is added to improve film strength during void-provided layer formation, then film strength is improved, but the proportion of void space decreases due to progression of catalysis
Solution Approach 1:
The invention divides the crosslinking process into two distinct stages: first forming the void-provided structure, then separately inducing crosslinking. This segmentation allows the void structure to be established before the catalyst acts, preventing catalyst-induced void space reduction while still achieving film strength improvement through subsequent crosslinking.
Solution Approach 2:
The void-provided structure is formed as a preliminary step before crosslinking occurs. By establishing the void structure first and then separately inducing crosslinking through light irradiation or heating, the invention prevents the catalyst from interfering with void space formation while still achieving the desired film strength.
2Strength
If alkali treatment is applied to improve film strength after void-provided layer formation, then film strength is improved, but the treatment has little effect due to low solvent resistance or high water repellency
Solution Approach 1:
The invention uses light or heat as an intermediary to induce crosslinking instead of directly applying alkali solutions. This intermediary approach allows the crosslinking reaction to occur without the alkali solution needing to penetrate the void-provided layer, overcoming the solvent resistance and water repellency issues.
3Strength
If ammonia gas is brought into contact with the void-provided layer to improve film strength, then film strength is improved, but the treatment takes too much time resulting in low manufacturing efficiency
Solution Approach 1:
The invention replaces the slow gas-phase ammonia treatment with a more efficient light or heat-induced crosslinking process. This substitution dramatically reduces treatment time while achieving the same film strength improvement, thereby significantly enhancing manufacturing efficiency.
4Reliability
If components are disposed at regular spacings to form air layers, then low refractive index layers are formed, but the components cannot be stacked sequentially causing time and trouble in production
Solution Approach 1:
The invention uses a void-provided layer with controlled porosity to create low refractive index regions without requiring precise spacing of discrete components. This porous structure allows sequential stacking of components while maintaining the optical performance of air layers, significantly improving production efficiency.
5Reliability
If spacers or frames are used to maintain air layers, then low refractive index layers are formed, but the thickness of the whole film increases
Solution Approach 1:
The invention replaces physical spacers and frames with a void-provided layer that has controlled porosity. This porous structure maintains the low refractive index function while eliminating the need for thick spacer structures, thereby reducing the overall film thickness.
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 achieves a laminated film with both high void space proportion and film strength, suitable for optical elements and image displays, offering improved manufacturing efficiency and performance.
Implementation Method 1
the precursor contains a substance that generates a crosslinking reaction accelerator for accelerating the crosslinking reaction, the substance is a substance that generates the crosslinking reaction accelerator by light irradiation or heating
Implementation Method 2
the substance is a substance that generates the crosslinking reaction accelerator by light irradiation or heating
Data Source
AI summary
The present invention is intended to provide a laminated film including a void-provided layer achieving both a high proportion of void space and a high film strength. The laminated film of the present invention includes a void-provided layer 21 and a resin film 10, the void-provided layer 21 being stacked on the resin film 10. The laminated film is produced by a production method, including steps of forming a void-provided structure 20′, which is a precursor of the void-provided layer 21 on the resin film; and causing a crosslinking reaction in the precursor 20′ after the precursor forming step. The precursor 20′ contains a substance that generates a basic substance by light irradiation or heating, the basic substance is not generated in the precursor forming step, the basic substance is generated by light irradiation or heating in the crosslinking reaction step, and the crosslinking reaction step has multiple stages.