Low-Pressure UV Lamp Coating Curing Heat Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current UV polymerization technologies for organic coatings face issues with high heat generation, ozone production, and complex implementation, particularly due to the use of high-pressure mercury vapor lamps, which are costly and inefficient.
Innovation Solution
The use of low-pressure lamps emitting quasi-monochromatic short ultraviolet (U.V.-C) light for polymerizing and crosslinking organic coatings, which reduces heat generation, eliminates ozone production, and simplifies the technology, allowing for efficient industrial-scale coating at high speeds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high-pressure mercury vapor lamps are used for UV polymerization, then the coating can be cured effectively, but high heat is generated and ozone is produced
Solution Approach 1:
The patent changes the key parameter of UV lamp operating pressure from high-pressure to low-pressure operation. This parameter change fundamentally alters the emission characteristics, reducing heat generation and eliminating ozone production while maintaining effective UV-C output for coating polymerization
Solution Approach 2:
The invention replaces expensive, complex high-pressure lamp systems with simpler, more economical low-pressure lamp systems. The low-pressure lamps are more cost-effective and have simpler implementation requirements, making the overall system more economical
2Power
If high-pressure mercury vapor lamps are used, then sufficient UV power is provided, but the implementation becomes complex with expensive equipment
Solution Approach 1:
The patent changes the operating pressure parameter from high to low, which fundamentally simplifies the lamp construction and power supply requirements. Low-pressure lamps operate at much lower voltages and have simpler cooling requirements, reducing equipment complexity and cost
Solution Approach 2:
The invention replaces expensive high-pressure lamp systems with more economical low-pressure alternatives. The simplified lamp design and lower operational requirements reduce both capital investment and operating costs
3Object-generated harmful factors
If low-pressure lamps are used, then heat generation and ozone production are reduced, but UV-C irradiation power is insufficient for industrial coating speeds
Solution Approach 1:
The patent divides the UV irradiation function into multiple low-pressure lamp units arranged in series or parallel. By segmenting the total power requirement across multiple lower-power lamps, the system achieves sufficient cumulative UV-C output while maintaining the low heat and zero ozone advantages of individual low-pressure lamps
Solution Approach 2:
The invention combines multiple low-pressure lamp outputs to achieve the total UV-C power needed for industrial coating speeds. The synergistic effect of multiple lamps working together provides sufficient irradiation power while maintaining the beneficial low heat and ozone-free characteristics
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 results in a more economical and efficient process with lower equipment costs, reduced heat output, and comparable peel strength to conventional methods, while enabling continuous coating speeds up to 600 m/min without odor issues.
Implementation Method 1
low-pressure lamps which emits in the U.V.-C range a light quasi-monochromatic
Implementation Method 2
the light energy of UV radiation which allows the formation of active protagonists, by radical cleavage, and thus the triggering and continuation of crosslinking and/or polymerization
Implementation Method 3
the light energy of UV radiation which allows the formation of active protagonists, by radical cleavage
Data Source
AI summary
The invention relates to a novel method for polymerising and/or reticulating an organic coating composition, in particular to the preparation of a reticulated organic coating on a base under short ultraviolet radiation (U.V.-C).