Glass Vial Silicone Coating Scratch Resistance
Solution Overview
Problem
Glass containers used for pharmaceutical, medical, or cosmetic applications often suffer from scratches or damage, leading to reduced strength and a compromised optical appearance, and may contain undesirable substances, which are detrimental for their intended use.
Innovation Solution
A glass container with a partial silicone coating on its outer surface, designed to enhance scratch resistance and maintain a flawless optical appearance, while ensuring the coating does not migrate onto the inner surface, and the container is processed to maintain cleanliness and sterility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If glass containers are subjected to washing, drying or sterilization processing steps after hot forming, then they meet high requirements for low particle load or sterility, but they exhibit scratches or damage on their surface which reduce strength and optical quality
Solution Approach 1:
The glass containers are pre-coated with a protective coating before washing, drying or sterilization processing. This preliminary protective layer prevents scratches and damage during subsequent processing steps, allowing the containers to meet sterility and particle load requirements without compromising surface integrity or strength
Solution Approach 2:
A protective coating is applied as an intermediary layer between the glass container surface and the processing environment. This coating acts as a mediator that protects the glass from direct contact with potentially damaging elements during washing, drying or sterilization, while still allowing the container to achieve required sterility levels
2Ease of manufacture
If glass containers are subjected to processing steps with system components or other glass containers, then they are prepared for filling or distribution, but scratches or damage occur which compromise optical impression
Solution Approach 1:
The protective coating is applied preliminarily before processing steps that involve contact with system components or other glass containers. This pre-applied coating prevents scratches that would compromise optical appearance, while still allowing the containers to be processed for filling or distribution
Solution Approach 2:
A thin film coating is applied to the glass container surface, providing flexible protection during processing. This thin protective layer prevents direct contact scratches while maintaining the container's optical properties and allowing normal processing operations
3Strength
If glass containers are coated on outer container surface, then scratch resistance and optical impression are improved, but complexity of manufacturing increases
Solution Approach 1:
The coating application process utilizes controlled parameter changes (such as temperature, humidity, or chemical concentration) to achieve optimal coating properties. By carefully controlling these parameters, the coating process becomes more predictable and easier to manufacture, reducing overall manufacturing complexity while maintaining improved scratch resistance
Data Source
Figure 1(a)~1(b)
Figure 2
Figure 3(a)~3(b)
AI summary
The invention relates to a glass container, preferably vial for pharmaceutical, medical or cosmetic applications, wherein the glass container is coated on its outer container surface at least partially with a coating and wherein the coated glass container has an increased scratch resistance with respect to a contact of the glass container with at least one further glass container.