Water-Based Adhesive Composition for Stable Outdoor Performance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current adhesive films for advertisements, primarily using organic solvent-based adhesives, face challenges with environmental regulations and the need for cost reduction and improved workability, while water-based adhesives struggle with temporal stability and peeling strength under environmental factors.
Innovation Solution
A water-based adhesive composition with a waterborne adhesive resin having a concentration of ionic components less than 100 ppm, comprising a polymer mixture of 90 to 99.9 parts by weight of (meth)acrylic acid ester monomer and 0.1 to 10 parts by weight of crosslinking monomer, with a weight average molecular weight of 50,000 to 700,000, and a glass transition temperature of -60 to -10 °C, which is formulated to maintain an aging rate of 10% or less.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If water-based adhesives are used instead of organic solvent-based adhesives, then cost reduction and improved workability are achieved, but temporal stability and peeling strength under environmental factors deteriorate
Solution Approach 1:
The patent changes the chemical composition parameters of the adhesive by using waterborne adhesive resin with specific molecular weight (50,000-700,000), glass transition temperature (-60 to -10°C), and ionic component concentration (<100 ppm). These parameter changes enable the adhesive to maintain both cost-effectiveness and temporal stability under environmental factors.
Solution Approach 2:
The patent creates a composite adhesive system by combining waterborne adhesive resin with specific additives including nonionic emulsifiers, thickening agents, and UV stabilizers. This composite formulation achieves both the economic benefits of water-based adhesives and the performance reliability needed for outdoor advertising applications.
2Ease of operation
If ionic components are present in water-based adhesive composition, then emulsification and mixing are facilitated, but temporal stability and aging resistance deteriorate
Solution Approach 1:
The patent extracts and removes ionic components from the adhesive composition through purification processes, limiting ionic component concentration to less than 100 ppm. This extraction eliminates the harmful effects of ions on temporal stability while maintaining the benefits of water-based formulation through nonionic emulsifiers.
Solution Approach 2:
The patent introduces nonionic emulsifiers as intermediary substances that perform the emulsification and mixing functions previously achieved by ionic components. These nonionic emulsifiers facilitate homogeneous mixing without compromising temporal stability or promoting degradation under environmental factors.
3Adaptability or versatility
If adhesive is applied to various adherends for advertisement products, then versatility and application range are improved, but consistency of peeling properties across different surfaces deteriorates
Solution Approach 1:
The patent develops a universal adhesive composition that functions effectively across multiple adherend types including metal plates, glass, coated surfaces, plastic surfaces, and concrete surfaces. The waterborne adhesive resin with specific molecular weight and glass transition temperature provides consistent peeling properties (180° peel strength) across all these diverse substrates, achieving both versatility and 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
The adhesive composition exhibits excellent peeling properties and reworkability, ensuring stable performance against temporal and environmental factors, allowing effective application to various adherends and maintaining physical properties over time.
Implementation Method 1
a polymer of a monomer mixture including 90 to 99.9 parts by weight of a (meth)acrylic acid ester monomer and 0.1 to 10 parts by weight of a crosslinking monomer
Implementation Method 2
additives to form a complex with the ionic component
Data Source
AI summary
The present invention relates to a water-based adhesive composition, to a method for manufacturing same, and to an adhesive film. The water-based adhesive composition according to the present invention has excellent physical properties such as detachability and reworkability, and can stably prevent changes in the physical properties thereof caused by longitudinal or environmental factors. In addition, the water-based adhesive composition according to the present invention has excellent wettability with respect to various adherends. Accordingly, the water-based adhesive composition according to the present invention can be effectively applied to various industrial adhesive products such as adhesive films for advertisements.