Water Soluble Release Liner for Self Adhesive Materials
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Solution Overview
Problem
Traditional self-adhesive materials rely on non-biodegradable release liners that contribute to environmental pollution and waste, and the removal of these liners can lead to crease formation and misalignment issues during application.
Innovation Solution
A self-adhesive material with a protective layer of water-soluble film incorporated with surfactants and/or fillers, eliminating the need for release liners, allowing for easy application and biodegradable disposal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If traditional release liners are used, then easy release and protection of adhesive are achieved, but environmental pollution and waste are increased
Solution Approach 1:
The patent changes the chemical composition parameters of the release liner by incorporating water-soluble polymers (PVA, polyacrylamide, polyacrylic acid) and surfactants in specific concentrations. This transformation enables the liner to dissolve in water, fundamentally altering its disposal characteristics from persistent waste to biodegradable material, thus resolving the environmental pollution issue while maintaining release functionality.
Solution Approach 2:
The release liner is constructed as a composite material combining water-soluble base polymers with hydrophilic surfactants and optional fillers. This composite structure provides both the mechanical integrity needed for handling and the water-solubility required for environmental friendliness, achieving a balance between functionality and eco-compatibility.
2Ease of operation
If release liners are removed during application, then adhesive exposure is enabled, but crease formation and misalignment occur
Solution Approach 1:
The water-soluble release liner is dissolved in advance by applying water to the adhesive side before label application. This preliminary dissolution action removes the protective layer without mechanical handling, preventing creases and misalignment while exposing the adhesive uniformly for precise application.
Solution Approach 2:
The patent replaces the mechanical removal process (peeling and pulling) with a chemical dissolution process using water. This substitution eliminates the mechanical forces that cause creasing and misalignment, allowing the adhesive to be exposed gently and uniformly for precise label placement.
3Ease of manufacture
If silicon coating is applied for release, then easy release is achieved, but pollution and non-biodegradability are increased
Solution Approach 1:
The patent fundamentally changes the chemical composition from hydrophobic silicon-based coatings to hydrophilic water-soluble polymers and surfactants. This parameter change transforms the material from non-biodegradable to biodegradable, enabling easy release through dissolution rather than through the mechanism of silicon coating.
Solution Approach 2:
The water-soluble release liner is designed as a disposable component that dissolves completely after use. By using inexpensive, biodegradable materials like PVA and polyacrylamide, the patent creates a single-use protective layer that eliminates the need for long-term stability and recycling, focusing instead on complete degradation after fulfilling its release function.
4Ease of manufacture
If solvent-based silicones are used for coating, then release properties are improved, but pollution levels are increased
Solution Approach 1:
The patent replaces solvent-based siliconing processes with water-based dissolution. Instead of applying silicones through solvents that evaporate and pollute, the new system uses water to dissolve the release liner directly, eliminating volatile organic compound emissions and reducing pollution while achieving equivalent release properties.
Solution Approach 2:
The patent changes the solvent parameter from organic solvents to water. This substitution eliminates the harmful emissions associated with solvent evaporation while maintaining the ability to achieve easy release through dissolution, thereby resolving the pollution issue without sacrificing release functionality.
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 solution reduces environmental impact, minimizes waste, and prevents crease formation during application, while also lowering production costs by eliminating the need for release liners.
Implementation Method 1
a protective layer of water soluble film incorporated with surfactants, which will totally eliminate the need for release liners
Implementation Method 2
The said protective layer formed of WSF is incorporated with surfactants selected from anionic based surfactants, cationic based surfactants
Data Source
AI summary
The invention relates to self adhesive material (SAM) using water soluble film incorporated with surfactants and/or fillers as a protective layer, eliminating the release liner (backing liner). The water soluble film incorporated with surfactants and/or fillers, used as a protective liner, provides easy breakage, faster dissolution as well as easy application to an object. The invention also relates to a process for the preparation of self adhesive material (SAM) without release liner and an apparatus and a method for applying the self adhesive material (SAM) on an object.