Glass Substrate Coated with Ceramic Layer to Prevent Delamination
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Glass delamination occurs during storage of liquid products in pharmaceutical packaging, leading to the release of glass flakes, which contaminates the product and poses a chemical resistance challenge.
Innovation Solution
A composite material is developed with a glass substrate coated by a ceramic protective layer, specifically a hydrogenated silicon carbide layer, deposited using plasma CVD, to prevent delamination and enhance chemical resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If glass substrate is used for pharmaceutical packaging, then chemical resistance is improved, but glass delamination occurs leading to product contamination
Solution Approach 1:
The patent applies a composite material structure consisting of a glass substrate combined with a protective coating layer. The coating layer is applied to the glass substrate to form a composite structure that prevents glass delamination while maintaining chemical resistance. This composite approach allows the system to benefit from both the chemical stability of glass and the protective properties of the coating layer.
2Reliability
If plasma CVD process is used to coat glass substrate, then protective layer is formed to prevent delamination, but manufacturing complexity increases
Solution Approach 1:
The patent employs plasma CVD (chemical vapor deposition) technology to apply the protective coating layer to the glass substrate. This advanced coating technology enables the formation of a uniform, adherent protective layer that prevents delamination. The plasma CVD process replaces traditional mechanical coating methods, providing superior coating quality and reliability despite increased process complexity.
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 composite material effectively inhibits glass delamination and ion diffusion, providing improved corrosion protection and stability, even in the presence of alkaline or acidic solutions, thus ensuring product safety and extended storage life.
Implementation Method 1
The protective layer can be deposited onto the substrate using a plasma, preferably with decomposition of a disilane precursor
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
The invention relates to a composite material for a pharmaceutical packaging means, comprising a substrate (2) and a protective layer (4), wherein the substrate (2) has a contact region (6) in contact with the protective layer (4), which contact region comprises the contact area between the substrate (2) and the protective layer (4) and a region of the protective layer (4) close to the surface, the substrate (2) is made of glass or a cyclic olefin polymer or a cyclic olefin copolymer, the qualities of the substrate (2) in the contact region (6) are different from the qualities of the substrate (2) outside the contact region (6), and the protective layer (4) is made of ceramic material.