How to Make Reliable, Washable, and Wearable Textronic Devices

Area of Science:

• Materials Science
• Electrical Engineering
• Textile Engineering

Background:

• Wearable electronic devices require robust construction for practical use.
• Integrating traditional electronics with flexible textiles presents durability challenges, especially concerning washability.

Purpose of the Study:

• To investigate and present two distinct methodologies for creating washable and reliable smart textile systems.
• To evaluate the effectiveness of protective measures for electronic components within wearable devices.

Main Methods:

• Utilized flexible conductive printed circuit boards (PCBs) to interface rigid electronics with textile conductive elements.
• Developed two protection strategies: thermoplastic polyurethane (TPU) film lamination and a full system latex barrier coating.
• Tested washability and contact resistance of conductive threads and flexible PCB connections.

Main Results:

• The TPU film approach demonstrated protection for conductive threads and electrical contacts.
• The latex barrier method provided protection for the entire system, including rigid electronics and textile substrates.
• Prototypes were fabricated, subjected to washing cycles, and their reliability was assessed.

Conclusions:

• Both presented approaches offer viable solutions for enhancing the washability of wearable electronic devices.
• The choice between TPU lamination and latex barriers depends on the specific system requirements and desired level of protection.
• Further research can optimize these methods for commercial applications of smart textiles.