Backing-Paper-Free Cold Laminating Film Release Layer Formulation
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Solution Overview
Problem
Conventional backing-paper-free cold laminating films experience issues with high peel strength leading to bubble formation during the laminating process, and are environmentally and cost-inefficient due to the use of backing paper.
Innovation Solution
An ultra-quiet backing-paper-free cold laminating film comprising a substrate layer with a release layer and adhesive layer, where the release layer is formulated with 2-ethylhexyl acrylate, vinyltrimethoxysilane, 1-methyl-1-phenylethyl hydroperoxide, vinyl-terminated silicone resin, di-t-butyl cumene peroxide, fluorosiloxane, ethyl acetate, ethylene glycol dimethyl ether, a toughening agent, polysiloxane-polyether copolymer, silicone, and wax powder, reducing peel strength and ensuring stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the peel strength of the cold laminating film is increased to improve adhesion, then the adhesive force is enhanced, but bubbles are easily formed during the laminating process
Solution Approach 1:
The patent changes the chemical composition parameters of the release layer by incorporating fluorosiloxane and di-t-butyl cumene peroxide into the release agent formula. This modifies the release properties to achieve low and stable peel strength that prevents bubble formation while maintaining adequate adhesion through the adhesive layer.
2Strength
If conventional backing paper is used to provide structural support, then the film has good mechanical properties, but environmental resources are consumed and manufacturing cost increases
Solution Approach 1:
The patent extracts and removes the backing paper component from the cold laminating film structure. The release layer is directly applied to the substrate layer, eliminating the need for separate backing paper while maintaining the necessary mechanical properties through the optimized release agent formulation.
3Loss of substance
If the release layer is made thinner to reduce material usage, then resource consumption decreases, but the release force may become unstable and affected by external environment
Solution Approach 1:
The patent creates a composite release layer by combining fluorosiloxane with di-t-butyl cumene peroxide in the release agent formula. This composite composition provides stable release force characteristics that are resistant to external environmental factors, allowing for thin layer application without compromising performance.
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 achieves low and stable peel strength, reducing bubble formation and maintaining adhesive force over time, while being environmentally friendly and cost-effective by eliminating the need for backing paper.
Implementation Method 1
the release layer being obtained by drying a release agent applied on the substrate layer, and the release agent consisting of the following components by weight: 50-75 parts of 2-ethylhexyl acrylate, 10-30 parts of vinyltrimethoxysilane, 0.5-1.5 parts of 1-methyl -1-phenylethyl hydroperoxide, 20-30 parts of vinyl-terminated silicone resin
Implementation Method 2
2-5 parts of di-t-butyl cumene peroxide, 1-3 parts of polysiloxane-polyether copolymer
Implementation Method 3
By adding di-t-butyl cumene peroxide and fluorosiloxane into 2-ethylhexyl acrylate, vinyltrimethoxysilane, 1-methyl-1-phenylethyl hydroperoxide and vinyl-terminated silicone resin, the ultra-quiet backing-paper-free cold laminating film of the present invention reduces the peel strength
Implementation Method 4
the release layer being obtained by drying a release agent applied on the substrate layer
Data Source
AI summary
The present invention discloses an ultra-quiet backing-paper-free cold laminating film comprising a substrate layer, a release layer, and an adhesive layer, the release layer and the adhesive layer being each attached to a respective side of the substrate layer, the release layer being obtained by drying a release agent applied on the substrate layer, and the release agent consisting of the following components by weight: 2-ethylhexyl acrylate, vinyltrimethoxysilane, 1-methyl-1-phenylethyl hydroperoxide, vinyl-terminated silicone resin, di-t-butyl cumene peroxide, fluorosiloxane, ethyl acetate, ethylene glycol dimethyl ether, a toughening agent, polysiloxane-polyether copolymer, silicone and wax powder. In the invention, the peel strength is reduced; it is ensured that the release force of the cold laminating film is not affected by the external environment, such that the cold laminating film has good stability; and meanwhile the subsequent adhesion of the release layer is improved, so that it can ensure that the adhesive force of the adhesive layer would not be affected after long-term adhesion between the adhesive layer and the release layer.