Flame Pyrolysis Functional Layer for Container Surface Treatment
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Solution Overview
Problem
Current methods for treating container surfaces in the packaging industry are complex and material-dependent, often requiring multiple steps and risking carbonization, especially when dealing with contoured surfaces or diverse substrate materials.
Innovation Solution
A method involving the application of a functional layer using flame pyrolysis or low-temperature plasma to non-oxidized container surfaces, allowing for uniform wettability and printability across various substrates without the need for digital printing or prior oxidation processes, using precursors like silicon or organometallic compounds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple process steps are used for surface pretreatment (oxidation followed by functional layer application), then adhesion properties are improved, but process complexity increases
Solution Approach 1:
The patent combines the oxidation step and functional layer application into a single integrated process. The functional layer precursor is applied to the container surface, and during subsequent drying/curing, the oxidation and functionalization occur simultaneously, eliminating the need for separate pretreatment steps while maintaining adhesion properties.
Solution Approach 2:
The functional layer precursor is applied in advance to the container surface before printing. This preliminary application creates a surface that is both oxidized and functionalized simultaneously, preparing the surface for optimal ink adhesion without requiring subsequent separate treatment steps.
2Reliability
If flame pyrolysis is used for surface treatment, then functional layer is deposited, but surface carbonization risk increases
Solution Approach 1:
The patent carefully controls the parameters of flame pyrolysis, including flame temperature, exposure time, and precursor concentration. By optimizing these parameters, the functional layer is deposited effectively while minimizing the risk of surface carbonization. The process uses controlled atmospheric conditions and precise timing to achieve functionalization without excessive heating.
3Reliability
If plasma jet with small depth of field is used, then surface wettability is improved, but treatment of contoured surfaces becomes difficult
Solution Approach 1:
The patent replaces the mechanical plasma jet system with a chemical vapor deposition approach using flame pyrolysis. The precursor-containing flame envelops the container surface, allowing uniform functional layer deposition on contoured surfaces without the depth of field limitations of focused plasma jets. The chemical reaction occurs throughout the flame volume, accommodating complex geometries.
4Reliability
If primer is applied to improve ink adhesion, then printability is improved, but dependency on container material increases
Solution Approach 1:
The patent develops a universal functional layer precursor that works across multiple container materials (glass, plastic, metal). The precursor is designed to undergo oxidation and functionalization that creates consistent surface properties regardless of the underlying substrate material, enabling broad applicability without material-specific optimization.
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
This approach simplifies the surface treatment process, ensures uniform wettability and printability on diverse substrates, reduces complexity, and prevents surface carbonization, making it suitable for a wide range of container materials and shapes.
Implementation Method 1
The functional layer is applied by means of flame pyrolysis, whereby a preferably gaseous precursor is added to the flame, which forms the functional layer on and/or with the surface of the container
Implementation Method 2
The container treatment machine may include a plasma nozzle, wherein the surface of the container is exposed to a plasma containing the precursor and the functional layer is applied at least in the area on the non-oxidized surface that is exposed to the plasma by the plasma nozzle
Data Source
Figure 1
Figure 2a~2b
Figure 2c~3
AI summary
Method for treating the surface of a container, such as a bottle, in the beverage processing industry, wherein a functional layer is applied to a non-oxidized surface of the container in a container treatment machine.