Plastic Laminate Surface Wiping for Stronger Adhesion
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Solution Overview
Problem
Plasma-treated polyolefin laminates often exhibit low adhesion properties due to the formation of a short polymer layer on the surface, which hinders the bonding with adhesives.
Innovation Solution
A method involving dry-treating a plastic surface, followed by wiping it with a cleaning tool containing a solvent such as water and a silane coupling agent to remove the short polymer layer, thereby enhancing the adhesion properties by ensuring the adhesive can react with the underlying long polymer chains.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the plastic surface is dry-treated by plasma treatment, then the surface hydrophilization is improved, but the adhesion properties deteriorate due to formation of short polymer layer
Solution Approach 1:
The invention extracts and removes the harmful short polymer layer formed on the plasma-treated surface through wiping with a cleaning tool. This extraction eliminates the barrier that prevents adhesive bonding, allowing the adhesive to directly contact the hydrophilized plastic surface and form strong bonds.
Solution Approach 2:
The invention performs preliminary wiping treatment with a cleaning tool containing solvent and silane coupling agent before applying the adhesive. This preliminary action removes the short polymer layer and prepares the surface by introducing silane coupling agents, creating an optimal surface condition for subsequent adhesive bonding.
2Reliability
If the surface after dry treatment is not washed or touched, then the adhesion properties are maintained, but the short polymer layer remains and prevents effective bonding
Solution Approach 1:
The invention converts the harmful short polymer layer into a beneficial condition for bonding. By wiping with a cleaning tool containing silane coupling agent, the short polymer layer is removed and replaced with silane coupling agents that promote strong adhesive bonding, turning the problematic surface condition into an advantageous one.
Solution Approach 2:
The invention changes the surface composition parameters by introducing silane coupling agents through the cleaning tool. This parameter change transforms the surface chemistry, replacing the short polymer layer with silane-functionalized surface that exhibits superior adhesion properties to adhesives.
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 effectively improves the adhesion properties of the laminate by removing the short polymer layer, allowing for stronger bonding between the plastic and adhesive, resulting in a laminate with excellent adhesion characteristics.
Implementation Method 1
a silane coupling agent, to obtain a cleaned plastic having a surface C that has been wiped with the cleaning tool
Implementation Method 2
the composition containing at least one solvent selected from the group consisting of water and polar solvents
Data Source
AI summary
The present invention is to provide a method for producing a laminate having excellent adhesion properties. An embodiment of the present invention is a method for producing a laminate, the method including: a step 1 of dry-treating a surface A of a plastic to obtain a dry-treated plastic having a surface B that has been dry-treated; a step 2 of wiping the surface B with a cleaning tool containing a composition for wiping, the composition containing at least one solvent selected from the group consisting of water and polar solvents, and a silane coupling agent, to obtain a cleaned plastic having a surface C that has been wiped with the cleaning tool; and a step 3 of applying at least one selected from the group consisting of adhesives and primers on the surface C to obtain a laminated body.