Elastomer Slip Coat Composition for Low-Friction Window Seals
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Solution Overview
Problem
Sliding windows in vehicles often experience sticking issues due to seal adhesion, requiring high forces to move and potentially damaging the window or reducing seal service life.
Innovation Solution
A slip coat composition featuring a UV light cationic curable coating with hollow glass microspheres and micronized silica, applied to the seal to reduce friction and prevent sticking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a seal is used to keep out elements, then air and watertight sealing is achieved, but the seal sticks to the movable window requiring high forces to move the window
Solution Approach 1:
A slip coat composition is applied as an intermediary layer between the seal and the movable window panel. This coating contains hollow glass microspheres and micronized silica that create a low-friction interface, allowing the window to slide easily while the seal maintains its sealing function. The slip coat acts as a mediator that prevents direct adhesion between the seal and window surface.
Solution Approach 2:
The invention changes the surface properties of the seal by applying a coating with modified friction characteristics. The slip coat composition alters the coefficient of friction between the seal and window panel, transforming the high-friction sticking interface into a low-friction sliding interface while preserving the seal's sealing capability.
2Ease of operation
If the window is moved manually with excessive force to overcome sticking, then the window opens, but the window may be damaged
Solution Approach 1:
The slip coat serves as a protective intermediary layer that reduces the interface friction between seal and window. This prevents direct high-stress contact that could damage the window structure, allowing smooth operation with minimal force application.
3Ease of operation
If high forces are used to move the window against sticking, then the window moves, but wear of the seal increases reducing service life
Solution Approach 1:
The slip coat composition acts as a protective intermediary between the seal and window panel, reducing direct contact and friction. This minimizes wear on the seal material, extending its service life while maintaining window mobility.
Solution Approach 2:
The slip coat provides beforehand protection to the seal by creating a low-wear interface. The hollow glass microspheres and silica particles in the coating cushion the contact interface, preventing direct abrasive wear on the seal before damage can occur.
4Extent of automation
If a motor is used to move the window, then automated operation is achieved, but sticking negatively impacts the motor
Solution Approach 1:
The slip coat acts as a protective intermediary that isolates the motor from the high-friction sticking problem. By reducing the sealing interface friction, the motor encounters minimal resistance during window operation, maintaining its performance and reliability.
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 slip coat composition effectively reduces static and dynamic friction between the window panel and the seal, preventing sticking and extending the seal's service life while maintaining a watertight seal.
Implementation Method 1
an ultra-violet light cationic curable coating composition including hollow glass microspheres and micronized silica... a polymer resin including at least one functional group curable upon exposure to ultraviolet radiation
Data Source
AI summary
A slip coat composition, a gasket, and a method forming a gasket including a slip coat. The slip coat composition includes an ultra-violet light cationic curable coating composition including hollow glass microspheres and micronized silica. The gasket includes a seal having an exposed surface on which the slip coat is disposed. A base layer defining a first channel is injection molded and a seal is injection molded onto the base layer at least partially within the first channel. The seal includes an exposed surface which exhibits a texture. The slip coat composition is applied to the exposed surface of the seal and cured.