Sealing Method Using Ester Solvents for Odor Reduction
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Solution Overview
Problem
Existing sealing methods using cover films often suffer from odor issues, poor quick drying properties, and low sealability due to the use of solvents like xylene, which have low solubility in the adhesive and can lead to peeling over time.
Innovation Solution
A sealing method utilizing a cover film with a polymer layer on a transparent support, where the sealing solvent is selected from esters, alcohols, ketones, ethers, or aromatic hydrocarbons, with specific boiling point and Hansen solubility parameters to enhance solubility and adhesion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If solvents like pinene, limonene, or alkane-based solvents are used instead of xylene, then odor is reduced, but solubility in the adhesive decreases leading to poor sealability and quick drying properties
Solution Approach 1:
The invention changes the chemical parameters of the sealing solvent by specifying particular esters (ethyl propionate, amyl acetate, propyl acetate, isopropyl acetate, butyl acetate) with controlled boiling points (80-170°C) and Hansen solubility parameters (dH1: 2.5-15.0, dP1: 0.5-8.0). This parameter optimization resolves the contradiction by achieving both low odor and high sealability through scientifically tuned solvent properties.
2Loss of time
If solvents with lower boiling points are used, then quick drying properties improve, but odor increases and handling becomes difficult
Solution Approach 1:
The invention optimizes the boiling point parameter within the range of 80-170°C for ester-based solvents. This controlled parameter change achieves quick drying (reducing loss of time) while maintaining acceptable odor levels, resolving the contradiction between drying speed and odor control.
3Reliability
If xylene is used as the sealing solvent, then sealability is high, but odor is strong and handling becomes difficult
Solution Approach 1:
The invention replaces xylene with ester-based solvents having specifically controlled boiling points (80-170°C) and Hansen solubility parameters (dH1: 2.5-15.0, dP1: 0.5-8.0). This parameter substitution maintains high sealability while dramatically reducing odor, resolving the contradiction between sealability and odor control.
4Ease of operation
If solvents with strong odor are used, then handling is easier, but long-term stability deteriorates due to peeling
Solution Approach 1:
The invention uses ester-based solvents with optimized boiling points (80-170°C) and Hansen solubility parameters that ensure both ease of handling and long-term stability. The specific parameter range prevents peeling while maintaining operational ease, resolving the contradiction between handling convenience and long-term stability.
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 proposed method effectively reduces odor, improves quick drying properties, and enhances sealability, preventing peeling and ensuring long-term stability of the sealed sample.
Implementation Method 1
a sealing solvent is a solvent including at least one kind selected from the group consisting of an ester, an alcohol, a ketone, an ether, and an aromatic hydrocarbon
Implementation Method 2
quick drying properties after sealing
Data Source
AI summary
An object of the present invention is to provide a sealing method using a cover film where a problem of odor is not likely to occur and quick drying properties and sealability are high.The sealing method according to the present invention is a sealing method that is performed using at least a cover film and a sealing solvent, the cover film including a polymer layer provided on a transparent support, in which the sealing solvent is a solvent including at least one kind selected from the group consisting of an ester, an alcohol, a ketone, an ether, and an aromatic hydrocarbon, in a case where the sealing solvent is an ester, an alcohol, a ketone, or an ether, a boiling point of the sealing solvent is 80° C. to 170° C., and in a case where the sealing solvent is an aromatic hydrocarbon, a boiling point of the sealing solvent is 150° C. to 170° C.