Trading Card UV Transfer Coating for Bubble-Free Gloss
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Solution Overview
Problem
Existing methods for applying a holographic effect to trading cards using UV varnish result in uneven coating, bubble formation, and reduced durability due to thin UV varnish layers, deteriorating the appearance and durability of the cards.
Innovation Solution
A method involving a UV transfer coating process to form a thick UV varnish coating layer, including steps of supplying a trading card with a UV varnish layer, printing and applying UV varnish, attaching a UV casting film, curing with a UV lamp, and peeling off the film, with specific adjustments to UV lamp output and temperature to ensure uniform application and bubble removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a thin UV varnish coating layer is applied to trading cards, then the manufacturing process is simple and fast, but the coating is uneven, bubbles form, and durability is reduced
Solution Approach 1:
The patent divides the coating process into multiple sequential steps: applying a first UV varnish coating layer, then applying a second UV varnish coating layer on top. This segmentation allows each layer to be applied and cured separately, ensuring uniform coating without bubbles while maintaining manufacturing efficiency through continuous processing
Solution Approach 2:
The first UV varnish coating layer is applied and cured before applying the second layer. This preliminary action creates a stable base layer that ensures uniform coating adhesion and prevents bubble formation in the final thick coating, while the pre-cured state allows for efficient continuous manufacturing
2Strength
If a thin UV varnish coating layer is used, then the manufacturing process is simple, but adhesive strength and durability are reduced
Solution Approach 1:
The patent segments the coating into multiple layers applied sequentially, with each layer contributing to the overall adhesive strength. The first layer provides initial adhesion to the card surface, while the second layer enhances the total bonding strength, achieving high durability without requiring complex single-step processes
Solution Approach 2:
The patent implements continuous UV curing between and during coating steps, maintaining the useful action of bonding without interruption. This continuous UV exposure ensures each layer achieves maximum adhesive strength as it is applied, building cumulative durability through a streamlined process rather than discrete complex operations
3Illumination intensity
If a thick UV varnish coating layer is formed, then gloss and adhesive strength are enhanced, but the process becomes more complex
Solution Approach 1:
The patent achieves a thick UV varnish coating layer by segmenting it into multiple sub-layers applied sequentially. Each sub-layer is applied and cured separately, allowing the thick overall coating to be built up in manageable portions that maintain uniform gloss without requiring complex equipment for single-step thick coating application
Solution Approach 2:
The patent maintains continuous UV curing throughout the multi-layer coating process, ensuring each layer achieves optimal gloss and adhesion as it is applied. This continuous action allows the thick coating to be built up efficiently without interrupting the gloss-enhancing UV exposure, avoiding the need for complex batch processing equipment
4Reliability
If a thick UV varnish coating layer is applied, then durability is improved, but bubble formation and appearance deterioration occur with conventional methods
Solution Approach 1:
The patent segments the thick UV varnish coating into multiple thinner sub-layers applied sequentially. Each sub-layer is thin enough to cure uniformly without trapping air bubbles, yet the cumulative thickness provides the desired durability. This segmentation eliminates bubble formation while maintaining high surface quality and reliability
Solution Approach 2:
The first UV varnish coating layer is applied and fully cured before applying the second layer. This preliminary curing action ensures the base layer is completely bubble-free and stable, providing a defect-free foundation for the subsequent layer. The sequential curing process prevents bubble entrapment that would occur if layers were applied simultaneously or without intermediate curing
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 method produces trading cards with enhanced gloss and adhesive strength, minimizing bubble occurrence and improving appearance by forming a thick UV varnish coating layer, resulting in a clean and visually appealing surface.
Implementation Method 1
irradiating UV to one side or both sides of the trading card to which the UV casting film has been attached, for a preset period of time to cure the UV varnish
Data Source
AI summary
The present disclosure relates to a method for manufacturing a trading card with improved surface characteristics and a trading card manufactured by the method, and provides a method for manufacturing a trading card and a trading card manufactured by the method in which the trading card has a thick UV varnish coating layer, excellent gloss without generating bubbles and improved adhesion of the coating layer by printing and applying UV varnish again on the upper part of the trading card with the UV varnish coating layer and then curing it again.