Metal-Polymer Composite Lamination Using Vacuum Film Bonding
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Solution Overview
Problem
Existing processes for producing composite components with metal and polymer layers require complex machinery and numerous steps, and existing methods do not effectively coat the metal with a polymer layer.
Innovation Solution
A process involving heating a metal sheet, applying a polymer film, using a vacuum to remove air, and promoting a chemical reaction between the metal and polymer to form a stable connection without complex machinery or multiple steps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a coil coating process is used to coat metal sheets with polymer, then the entire surface can be coated, but complex machinery with a large number of rollers is required
Solution Approach 1:
The patent replaces the complex mechanical roller system of coil coating with a vacuum-based system. A vacuum is applied to the chamber containing the metal sheet and polymer film, causing the polymer film to conform to the metal sheet surface through pressure differential rather than mechanical roller contact. This eliminates the need for multiple rollers and complex guiding mechanisms while achieving complete surface coverage.
Solution Approach 2:
The patent uses a vacuum environment (inert atmosphere) to remove air between the polymer film and metal sheet surface. By creating a vacuum chamber and applying vacuum, air is evacuated from the space between the film and substrate, allowing the polymer film to adhere completely to the metal sheet without air pockets or bubbles, achieving uniform coating coverage.
2Adaptability or versatility
If conventional coating processes are used, then large metal coils can be coated, but smaller metal sheets cannot be effectively coated
Solution Approach 1:
The vacuum-based coating system is universally applicable to metal sheets of any size. The chamber can accommodate different dimensions, and the vacuum mechanism works the same way regardless of the substrate area. This eliminates the size limitations of conventional coil coating processes that require continuous large-format material feeding through fixed roller systems.
3Strength
If physical treatment methods like laser welding or ultrasonic welding are used to join metal and polymer, then functional elements can be connected, but the metal surface cannot be coated with polymer layer
Solution Approach 1:
The patent combines the coating and bonding functions into a single process step. By applying vacuum to simultaneously conform the polymer film to the metal sheet surface and remove air between them, the process achieves both complete surface coverage and strong adhesion. The optional heating step further promotes chemical reaction and connection between the layers, merging coating and joining operations that would otherwise require separate processes.
Solution Approach 2:
The patent uses temperature as a controllable parameter to promote the connection between metal and polymer. By optionally heating the metal sheet and/or polymer film above a temperature that promotes connection, chemical reactions are enhanced and adhesion is improved. This parameter control allows optimization of both coating quality and bond strength simultaneously.
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
Enables efficient coating of metal sheets with a polymer layer, allowing for smaller metal sheets to be coated uniformly and forming a stable composite component with reduced process complexity.
Implementation Method 1
applying a vacuum to contact the polymer film with the entire surface of the metal sheet and to remove air enclosed between the metal sheet and the polymer film
Implementation Method 2
heating a metal sheet which optionally comprises a surface treatment; optionally heating the polymer film; optionally holding the temperature of the metal sheet and the polymer film above a temperature at which the connection of the polymer film and the metal sheet is promoted
Data Source
AI summary
The invention relates to a process for producing a composite component comprising at least one metal layer and one polymer layer, the process comprising: (a) heating a metal sheet which optionally comprises a surface treatment; (b) placing a polymer film on the metal sheet and optionally heating the polymer film; (c) applying a vacuum to contact the polymer film with the entire surface of the metal sheet and to remove air enclosed between the metal sheet and the polymer film; (d) optionally holding the temperature of the metal sheet and the polymer film above a temperature at which the connection of the polymer film and the metal sheet is promoted to achieve the composite component.