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This invention describes a fabric item, like a piece of clothing or a compress, that can generate heat. It works by attaching a thin, flexible heating element to the inside surface of a fabric layer. This heating element is specifically made from a metallized sheet or a conductive textile with an integrated electrical circuit pattern that produces warmth when connected to a power source.
Why it matters: Since 2004, advancements in flexible circuit manufacturing, conductive inks, and compact, efficient battery technology have made integrated heating elements and portable power sources more practical and cost-effective for wearable applications.
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