Introduction to TPU printed circuits
TPU (Thermoplastic polyurethane) is a high-performance material with high elasticity, wear resistance and comfortable. It has become a new choice in the field of stretchable circuit boards due to its superior flexibility and elasticity. Compared with traditional materials such as PI or PET, medical-grade TPU substrates not only have better skin friendly and are suitable for medical devices that fit the human body for a long time, but also have the characteristics of chemical corrosion resistance and high temperature resistance, which are suitable for harsh medical environments.
Structure of TPU circuit boards developed by Flex Plus
TPU circuit boards are mainly composed of the following layers:
Substrate layer: medical-grade TPU material is used, which has softy, tear resistance and friendly.
Conductive layer: The silver paste is printed on the TPU base to form a circuit pattern. The thickness of the conductive layer is generally thin to ensure flexibility.
Surface treatment: Silver chloride plating, corrosion resistance and conductivity are stronger
Protective layer: TPU material is also used to keep the circuit board flexible while protecting the circuit from damage, enhancing wear resistance and extending circuit life.
This structural design ensures that the circuit board maintains good conductivity in dynamic environments such as large bending and stretching, and can adapt to complex human body surfaces. Compared with PI substrates, TPU has a lower elastic modulus, so it can better fit the skin, is not easy to cause discomfort, and is suitable for wearable devices.
Process challenges and solutions
Manufacturing circuits on TPU substrates faces many process difficulties. Flex Plus has gradually solved the following key problems through technological innovation:
The problem that TPU materials may soften at high temperatures.
The surface tension of TPU is low, and the metal coating is not easy to distribute evenly.
High durability and fatigue resistance.
As an industry pioneer in TPU PCB, Flex Plus continues to optimize the manufacturing process to make its products perform well in the medical field. Flex Plus has improved the durability and safety of its products through large-scale testing and technological iteration. This innovative material application is gradually changing the medical device market, bringing people a safer and more comfortable medical experience.
Market Prospects
With the popularity of wearable devices and portable medical devices, the stretchable circuits market is growing rapidly. Compared with traditional circuit boards, TPU PCBs have outstanding advantages and are particularly suitable for the following fields:
Wearable health monitoring devices
TPU flexible circuit boards are suitable for health monitoring devices attached to the human body, such as heart rate monitoring patches, blood oximeters, etc., due to their good fit and comfortable. As people's demand for health data monitoring increases, the market demand for TPU PCB will further expand.
Flexible sensors in medical devices
In the medical field, the friendly and sensitivity sensing capabilities of TPU printed circuits give them unique advantages in the manufacture of in vitro sensors. For example, it can be used for real-time monitoring of body temperature, electrocardiogram, blood sugar, etc., providing patients with a more comfortable wearing experience.
Summary
TPU circuit boards combine high skin friendly, excellent flexibility and reliable conductivity, greatly expanding their application potential in the fields of medical and health monitoring. Although there are certain challenges in the manufacturing process, with the continuous advancement of technology, TPU flexible circuits are expected to play a greater role in the field of wearable devices and portable medical devices in the future, and the market prospects are broad. Through continuous innovation and breakthroughs, Flex Plus has provided valuable experience and technical support for the industrial application of TPU circuits, further promoting the development of medical-grade flexible electronic devices.
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