Release Protection Film With Embossed Pattern For Display Panels
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Solution Overview
Problem
Conventional protection films for large-sized displays or panels face challenges in achieving a balance between sufficient adhesive force for attachment and low peeling force for easy separation, while also simplifying the manufacturing process and avoiding environmental unfriendliness.
Innovation Solution
A release protection film is manufactured using a method that involves preparing a resin material comprising polyolefin and petroleum resin, subjecting it to extrusion and stretching processes, and forming an embossed pattern on the resin membrane to create a film with controlled peeling force and adhesive properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a coating process is used to add a release layer on the CPP film, then the peeling force is decreased and the protection film can be easily separated, but the manufacturing process complexity increases and solvents are used which are environmentally unfriendly
Solution Approach 1:
The invention merges the release properties directly into the protection film material itself by incorporating a release agent into the resin composition during extrusion. This eliminates the need for a separate coating process to add a release layer, thereby reducing manufacturing complexity while maintaining easy separation capability. The release agent is mixed with the polyolefin resin and extruded together to form an integrally molded protection film with inherent release properties.
2Ease of manufacture
If the CPP film has a smooth surface, then the manufacturing process is simple, but the peeling force is high and the protection film cannot be easily separated from the display or panel
Solution Approach 1:
The invention changes the surface parameters of the protection film by incorporating a release agent into the resin composition. This modification alters the surface energy and friction characteristics of the film, reducing the peeling force without complicating the manufacturing process. The release agent creates a low-friction surface that enables easy separation while the film is still produced through standard extrusion processes.
3Strength
If the protection film has strong adhesion to attach onto large-sized displays or panels, then the adhesive force is sufficient, but the peeling force becomes high making separation difficult
Solution Approach 1:
The invention applies local quality by creating a differentiated structure within the protection film itself. The inner layer in contact with the display maintains strong adhesion through direct contact and molecular bonding, while the outer surface incorporates a release agent that provides low-friction separation properties. This localized differentiation allows the film to exhibit both strong adhesion for attachment and low peeling force for easy removal.
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 resulting release protection film exhibits a peeling force ranging from 130 g/25 mm to 200 g/25 mm, allowing for easy attachment and separation from glass surfaces, while maintaining high structural strength and low haze, thus simplifying the manufacturing process and being environmentally friendly.
Implementation Method 1
forming an embossed pattern having a depth of from 1 μm to 5 μm onto the resin membrane by an embossing roller
Implementation Method 2
subjecting the resin material to an extrusion process and a stretching process, so as to form a resin membrane
Implementation Method 3
subjecting the resin material to an extrusion process and a stretching process, so as to form a resin membrane
Data Source
AI summary
A release protection film and a method for manufacturing the same are provided. The method includes: preparing a resin material; subjecting the resin material to an extrusion process and a stretching process, so as to form a resin membrane; and forming an embossed pattern having a depth of from 1 μm to 5 μm onto the resin membrane by an embossing roller, so as to form the release protection film. The resin material includes a polyolefin material and a petroleum resin. Based on a total weight of the polyolefin material being 100 phr, an amount of the petroleum resin ranges from 5 phr to 20 phr.