Elastomeric Seal UV Resistance via Barrier Ink Coating
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Solution Overview
Problem
Elastomeric seals used in semiconductor manufacturing applications have limited protection against ultraviolet (UV) radiation, leading to degradation and reduced lifetimes, necessitating frequent replacements and increased operational costs.
Innovation Solution
An elastomeric seal with an ink comprising a barrier material applied to its upper surface, which prevents or reduces degradation from UV radiation, using metallic particles like aluminium flakes and inorganic compounds, combined with a resin binder and solvent, to enhance durability and resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If elastomeric seals are used in semiconductor manufacturing apparatus exposed to UV radiation, then sealing function is provided, but degradation from photo-absorption occurs and sealing properties are lost
Solution Approach 1:
A UV-resistant coating is applied as an intermediary layer on the elastomeric seal surface. This coating absorbs or reflects UV radiation before it reaches the elastomeric material, preventing photo-absorption and degradation. The coating acts as a mediator between the harmful UV radiation and the seal material, protecting the seal while maintaining its sealing function throughout the intended service life.
Solution Approach 2:
The solution combines elastomeric material with UV-resistant coating materials to create a composite sealing element. The elastomeric base provides the necessary sealing properties and flexibility, while the UV-resistant coating layer provides protection against radiation degradation. This composite structure allows the seal to maintain both its sealing function and structural integrity under UV exposure conditions.
2Productivity
If elastomeric seals are frequently replaced due to UV degradation, then continuous operation is maintained, but operational efficiency is reduced and costs increase
Solution Approach 1:
The UV-resistant coating is applied in advance to the elastomeric seal before installation. This preliminary protective action ensures that the seal is pre-equipped with UV protection, preventing degradation before it occurs. By taking this preventive measure beforehand, the seal can operate continuously for its full intended lifespan without requiring premature replacement, thereby maintaining operational efficiency and eliminating downtime associated with frequent replacements.
3Object-affected harmful factors
If standard elastomeric seals are used without UV protection, then manufacturing simplicity is maintained, but resistance to UV radiation is insufficient
Solution Approach 1:
A thin UV-resistant coating film is applied to the elastomeric seal surface. This thin film provides effective UV radiation protection while adding minimal complexity to the seal structure. The coating can be applied as a thin conformal layer that follows the seal's geometry, maintaining the simplicity of the overall seal design while providing the necessary protection against UV degradation.
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 elastomeric seal with the UV-resistant ink exhibits increased resistance to UV radiation, extending its lifespan and maintaining sealing efficiency, thus reducing the frequency of replacements and operational costs in semiconductor manufacturing processes.
Implementation Method 1
the ink comprises a barrier material, the barrier material being operable to prevent or reduce degradation of the elastomeric seal from ultraviolet (UV) radiation
Implementation Method 2
the exposed surfaces of the seals are damaged as a result of photo-absorption and lose their sealing properties
Data Source
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AI summary
An elastomeric seal for use in semiconductor manufacturing apparatus comprising an ink on at least a portion of the upper surface thereof, wherein the ink comprises a barrier material, the barrier material being operable to prevent or reduce degradation of the elastomeric seal from ultraviolet (UV) radiation.