Laser Marking of Frosted Vial Rings Without Glue Contamination
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Solution Overview
Problem
Existing methods for marking pharmaceutical containers at very low temperatures are complex, costly, and risk contaminating the contents due to the use of cold-resistant glue, and require complex devices for frost-free marking.
Innovation Solution
A method involving laser marking through frost on a separate ring surrounding the cap of the container, using a fiber laser with specific parameters to ensure precise and contamination-free marking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a label is applied to the container prior to low-temperature storage and laser-marked in an enclosure with storage conditions, then the marking can be applied without frost interference, but the device complexity increases and the process becomes more costly
Solution Approach 1:
The patent replaces the mechanical approach of applying physical labels with glue (which requires cold-resistant adhesives and complex application equipment) with a direct laser marking process that works through frost. The laser beam penetrates the frost layer and marks the container surface underneath, eliminating the need for label application machinery and complex frost-free enclosures.
Solution Approach 2:
The patent uses the frost layer itself as an intermediary medium rather than trying to remove it. The laser beam is designed to penetrate through the frost, using it as a transparent medium to reach the container surface for marking. This converts the harmful frost into a non-interfering element in the marking process.
2Reliability
If a label is applied before storage using cold-resistant glue, then the label remains attached at very low temperatures, but the glue may migrate into the container and damage the medicinal substance
Solution Approach 1:
The patent extracts and eliminates the label and glue components from the system entirely. Instead of applying a separate label that requires adhesive, the marking is applied directly to the container surface through the frost layer. This removes the source of potential contamination (glue migration) while maintaining the functionality of identifying information on the container.
Solution Approach 2:
The patent replaces the chemical bonding mechanism (glue adhesion) with a direct surface marking mechanism using laser. The laser modifies the container surface material itself to create permanent markings, eliminating the need for separate labeling materials and adhesives that could contaminate the medicinal substance.
3Ease of manufacture
If the container is marked while covered with frost using conventional methods, then the marking process becomes complex requiring frost-free enclosures or pre-heating equipment
Solution Approach 1:
The patent replaces complex mechanical and thermal systems (frost-free enclosures, pre-heating equipment, label application machinery) with a simplified laser marking system. The laser parameters are optimized to penetrate frost and mark the container surface directly, converting a complex multi-component system into a single-beam solution that works through the frost layer.
4Manufacturing precision
If conventional marking methods are used on frosted containers, then additional equipment for frost management is required, but this increases the cost and complexity of the marking system
Solution Approach 1:
The patent enables continuous marking operation through frost without interruption for frost removal or container heating. The laser system maintains continuous marking capability by using parameters optimized for frost penetration, allowing the useful action of marking to continue uninterrupted despite the presence of frost on the container surface.
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 simple, precise, and contamination-free marking on containers covered in frost, avoiding thermal damage and substance contamination while reducing costs and complexity.
Implementation Method 1
The method comprises a step of laser marking the ring through the frost
Data Source
AI summary
The disclosure relates to a method for marking a container comprising a vial containing a medicinal substance and closed by a cap secured to the vial by a ring. With the container being at least partially covered with frost, the method further comprises a step of laser marking the ring through the frost. The disclosure also relates to a device for marking a container.