Wooden Smart Card Manufacturing with Thermal Charring

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Existing smart card manufacturing methods do not effectively incorporate renewable materials like wood, which can enhance the durability and resilience of smart cards against environmental influences.

Innovation Solution

A method for manufacturing smart cards with a wooden surface layer involves applying thermal energy to the wood surface to char it, thereby increasing its durability and resistance to moisture, while ensuring the electronic components remain undamaged.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If thermal energy is applied to the front layer to char or darken the surface, then the durability and resistance to environmental influences is improved, but the risk of damaging electronic components increases

Engineering Contradiction:
Improvedurability and resistance to environmental influencesVSAvoiddamage to electronic components
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent applies thermal energy to the front layer before joining it with the antenna layer containing electronic components. This preliminary charring or darkening of the wood surface enhances its durability and environmental resistance, while the electronic components are protected from thermal damage as they are not yet attached to the heated layer

Inventive Principle:
Principle #10Preliminary action

2Adaptability or versatility

If renewable materials like wood are incorporated into smart cards, then sustainability is improved, but the resistance to moisture and environmental influences deteriorates

Engineering Contradiction:
ImprovesustainabilityVSAvoidresistance to moisture and environmental influences
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The patent changes the physical-chemical parameters of the wood material by applying thermal energy to char or darken the surface. This parameter change transforms the wood surface properties, significantly improving its resistance to moisture and environmental influences while maintaining the use of renewable wood material

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent creates a composite structure by joining the thermally treated wood front layer with the antenna layer containing electronic components. This composite construction combines the sustainability benefits of wood with the functional requirements and environmental resistance of the electronic components

Inventive Principle:
Principle #40Composite materials

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 results in smart cards with a wooden surface that is more resilient and durable, offering increased resistance to moisture and environmental influences, while maintaining the natural appearance and feel of wood.

Implementation Method 1

applying thermal energy to the front layer by a thermal energy source in order to heat the front layer for a first predetermined period of time to a first predetermined temperature

Methodology Applied
Scientific EffectThermal energy: Heating

Data Source

PatentEP4506853A1Method for manufacturing a smart card with a wooden layer
Publication Date: 2025.02.12 GIESECKE & DEVRIENT EPAYMENTS GMBH
  • EP4506853A1 patent drawingFigure 1
  • EP4506853A1 patent drawingFigure 2~3
  • EP4506853A1 patent drawingFigure 4~5

AI summary

A method (150) for manufacturing a smart card (10) is described. The method comprises: in a first step (152), providing a front layer (111), a rear layer (112), and an antenna layer (113) of a smart card body (11), wherein at least the front layer (111) comprises wood; in a second step (154), applying thermal energy to the front layer (111) by a thermal energy source (50, 70, 80) in order to heat the front layer (111) for a first predetermined period of time to a first predetermined temperature; in a third step (156), joining the front layer (111), the rear layer (112), and the antenna layer (113) with the antenna layer (113) being arranged between the front layer (111) and the rear layer (112). The third step (156) is carried out after the second step (154) and prior to the front layer (111) being joined with the antenna layer (113).