Film application method
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Solution Overview
Problem
Conventional film application methods struggle to prevent foreign substances and air bubbles from entering between the film and the substrate, especially in general environments where special equipment or controlled conditions are not available, making them difficult for general users to apply effectively.
Innovation Solution
A film application method involving a laminated structure with a foreign-substance-removing unit and a main unit, where a first adhesive layer is applied to the substrate, and the foreign-substance-removing unit is peeled off while the second adhesive layer is exposed, allowing for precise application of the functional film without exposing it to the environment, thereby preventing foreign substances and air bubbles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a film is applied in a general environment using conventional methods, then the application can be performed without special equipment, but foreign substances and air bubbles easily enter between the film and the substrate
Solution Approach 1:
The adhesive layer is applied to the substrate before the film is positioned, creating a preliminary bonding state. This allows the film to be held in place immediately, preventing foreign substances from entering the interface during the application process, while still allowing the application to be performed in a general environment without special equipment
2Ease of operation
If the adhesive layer is exposed to the general environment before application, then the film can be positioned and applied, but foreign substances stick to the adhesive layer and enter the interface
Solution Approach 1:
The adhesive layer is applied to the substrate in advance and allowed to become slightly tacky before the film is positioned. This preliminary bonding action secures the film immediately upon contact, preventing foreign substances from adhering to the adhesive layer and contaminating the interface, while still allowing adequate time for precise positioning
3Reliability
If soapy water is used to remove air bubbles as in conventional professional methods, then air bubbles can be effectively removed, but the process requires additional materials and time for drying
Solution Approach 1:
The invention extracts and eliminates the need for soapy water and drying processes from the film application method. Instead, air bubbles are prevented from forming in the first place through the preliminary adhesive application and immediate film bonding, simplifying the process while maintaining effective air bubble removal capability
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
This method effectively prevents foreign substances and air bubbles from entering the interface between the film and the substrate, is easy to use without requiring special equipment or environmental control, and reduces application time and mess compared to conventional methods.
Implementation Method 1
there are various known treatment methods and devices for preventing entry of foreign substances and air bubbles between the film and the product. Common methods here include, for example, application methods performed in a clean room or in vacuum... Other known methods are those removing foreign substances by making the foreign substances stick to an adhesive layer.
Data Source
AI summary
The present invention provides a film application method that can prevent entry of foreign substances and air bubbles between the film and the application target even when the film is applied in a general environment in which foreign substances such as dust are floating. The film application method is a film application method that applies a functional film to a substrate, the method including the steps of: (1) applying a first adhesive layer to the substrate, with a foreign-substance-removing unit including the first adhesive layer and a first film being overlaid onto a main unit including a second film, a second adhesive layer, and the functional film; and (2) while peeling off both the foreign-substance-removing unit and the second film, with one end of the functional film fixed to the substrate, by pulling ends of the foreign-substance-removing unit and the second film adjacent to the fixed end of the functional film through between the substrate and the functional film, applying the second adhesive layer exposed by removal of the second film to the surface of the substrate exposed by removal of the foreign-substance-removing unit.