Card Core Layer Lamination for Self-Centering Inlay Protection
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Solution Overview
Problem
Existing methods for manufacturing information carrying cards are inefficient and do not offer large-scale manufacturing capability, suitable for sensitive components, and are not suitable for sensitive components, and do not provide effective durability and are not suitable for sensitive components, and do not provide effective protection against environmental hazards.
Innovation Solution
The core layer for a plurality of information carrying cards, comprising a first thermoplastic layer and a plurality of inlay cards, comprising a first thermoplastic layer, a plurality of inlay layers, comprising a first thermoplastic layer, a plurality of thermoplastic layers, and a crosslinked polymer composition, with each inlay layer containing at least one electronic component, and a crosslinked polymer composition, which is flexible and durable.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If injection molding, bonding, embedding, and encapsulation processes are used to make cards directly on card body, then electronic components can be attached or mounted onto the card body, but the process does not offer large-scale manufacturing capability and has low productivity
Solution Approach 1:
The card manufacturing process is divided into separate stages: first forming a core layer with electronic components embedded in thermoplastic material, then later attaching this core layer to the final card body. This segmentation allows the core layer to be manufactured independently using high-productivity lamination processes while maintaining component integrity, resolving the contradiction between manufacturing ease and large-scale production capability
Solution Approach 2:
The core layer with electronic components is prepared in advance through a preliminary lamination process before being attached to the final card body. This preliminary action enables bulk preparation of core layers with multiple cards simultaneously, significantly improving productivity while keeping the final assembly process simple and reliable
2Ease of manufacture
If existing bonding and embedding processes are used, then electronic components can be mounted onto card body, but the process may not be suitable for sensitive components and does not provide effective protection against environmental hazards
Solution Approach 1:
The invention uses a composite structure consisting of a thermoplastic core layer material that provides both mechanical support and environmental protection for electronic components. The core layer is laminated between thermoplastic films creating a sealed encapsulation that protects sensitive components from moisture, oxygen, and other environmental hazards while maintaining ease of manufacture through standard lamination processes
Solution Approach 2:
The core layer is designed with sufficient thickness and material properties to provide cushioning and mechanical protection for electronic components before they are exposed to environmental conditions. The thermoplastic material and lamination structure create a protective barrier in advance, shielding sensitive components from environmental hazards throughout the card's service life
3Quantity of substance
If cards are made with embedded IC and thermoplastic material, then information can be stored in IC, but the cards need to withstand flexing to protect sensitive electronic components from damage while offering good durability
Solution Approach 1:
The core layer is constructed using thin thermoplastic films that are flexible by nature, allowing the card to bend and flex without rigid structural support. These flexible films encapsulate the electronic components, providing mechanical protection while maintaining the card's flexibility for contactless operation and repeated handling, thus resolving the contradiction between information storage and flex resistance
Solution Approach 2:
The invention merges the protective enclosure function with the structural support function into a single core layer assembly. The thermoplastic core layer and encapsulating films work together as an integrated unit that simultaneously protects electronic components from damage during flexing and provides the mechanical strength needed for durability, eliminating the need for separate rigid protective structures
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 core layer and resulting information carrying cards are flexible, durable, and provide effective protection for sensitive electronic components, with a process that allows for large-scale manufacturing and low-cost production.
Implementation Method 1
a crosslinkable polymer composition, which is flexible and durable
Data Source
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AI summary
The disclosure provides a method for forming a core layer for a plurality of information carrying cards, a resulting core layer, and a resulting information carrying card. A first portion of a crosslinkable polymer composition is dispensed onto the first thermoplastic layer. A second thermoplastic layer having a plurality of through-holes therein is then applied. A second portion of the crosslinkable polymer composition is dispensed into each through-hole. An inlay layer is placed over the polymer composition inside each through-hole. A third portion of the crosslinkable polymer composition is dispensed over each inlay layer. A third thermoplastic layer or a release film is placed over the third portion of the crosslinkable polymer composition to provide a layered structure. Each respective inlay layer is configured to be movable and/or self-center inside each through-hole in the presence of the crosslinkable polymer composition when the layered structure is pressed on a pressure.