Haptic Coating for Card-Shaped Data Carriers
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Solution Overview
Problem
Conventional card-shaped data carriers lack haptic experience and require complex additional steps for introducing haptic elements, which increases production effort and does not meet the technical requirements of functional cards like credit or smart cards.
Innovation Solution
A card-shaped data carrier with a haptic coating that is thin enough not to interfere with electronic components, allowing for a soft-touch experience without the need for embossing or engraving, using UV-curable or water-based paints with solid particles to create a velvety impression and enhance abrasion resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If embossing or engraving is used to create haptic elements on credit cards, then haptic experience is improved, but production complexity and technical effort increase
Solution Approach 1:
The invention changes the parameter of surface texture by incorporating solid particles into the coating material. Instead of mechanically altering the card surface through embossing or engraving, the coating itself provides haptic properties through the presence and arrangement of solid particles, thereby improving haptic experience without increasing production complexity
Solution Approach 2:
The invention uses a composite coating material consisting of a binder and solid particles. This composite structure allows the coating to provide both protective functions and haptic properties simultaneously, eliminating the need for separate haptic element introduction steps and reducing overall production complexity
2Ease of operation
If a thick coating is applied to provide haptic properties, then haptic experience is improved, but functionality of electronic components is impaired
Solution Approach 1:
The invention optimizes the particle size parameter of the solid particles used in the coating. By selecting particles with appropriate dimensions, the coating provides sufficient haptic properties while maintaining a thin overall thickness that does not interfere with the electromagnetic field generation and reading functions of induction coils in contactless payment cards
Solution Approach 2:
The invention applies the coating selectively or adjusts particle distribution to ensure that areas with electronic components receive a thinner or less dense coating layer, thereby maintaining local electromagnetic transparency while still providing haptic properties in other areas of the card
3Strength
If conventional smooth surfaces are used for credit cards, then abrasion resistance is improved, but haptic experience is lost
Solution Approach 1:
The invention creates a composite coating system where solid particles are embedded in a binder matrix. This composite structure provides both the abrasion resistance of a protective coating and the haptic properties of textured particles, simultaneously achieving both desired properties without compromise
Solution Approach 2:
The invention modifies the surface parameter by controlling particle size, shape, and distribution within the coating. This allows the surface to maintain durability through proper particle selection while simultaneously providing varied tactile feedback for improved haptic experience
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 haptic coating provides a pleasant tactile experience while maintaining the functionality of electronic components, allowing for easy application during or after the manufacturing process, and can be applied partially or fully to enhance both aesthetics and durability.
Implementation Method 1
UV-curable or water-based paints with solid particles to create a velvety impression
Data Source
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AI summary
The present invention relates to a card-shaped data carrier coated in such a way that a user experiences a new haptic experience when handling, for example, credit cards, and furthermore, the coating is specifically tailored to card-shaped data carriers. The present invention further relates to a method for manufacturing the card-shaped data carrier and to a computer program product with control commands that implement the method.