With the improvement of people’s living standards and the demand for healthy living, the demand for smart bracelets is gradually increasing, and there are thousands of smart bracelets available on the market. Prices range from tens of yuan to 100 yuan. Thousands of things. In addition to picking a bracelet that suits your function, you should also consider the comfort of the wristband, the long-term contact between the bracelet and the human body, so the material does not cause allergies to the human body, and the comfort, durability and anti-fouling properties of the wrist are also wrists. An important indicator with material selection and design.
At present, the materials used to manufacture smart wristband wristbands are mainly silica gel, TPU, TPE, etc. Each material has its own advantages and disadvantages, and is widely used in various brands of bracelets for different performance and price requirements.
First, silica gel
Silica gel is excellent in elasticity, smooth in touch and low in price. It is the most commonly used material, but the product is difficult to be personalized, the skin fit is too good, it is easy to touch and fatigue, and the transparency of the product is not good, and it can not be recycled. Most silica gels are currently replaced by TPE.
TPU thermoplastic polyurethane elastomer can be processed by common thermoplastic processing methods, such as injection molding, extrusion, calendering, etc. It is durable and elastic, and the design space for injection molding is wider than that of silicone. At the same time, TPU can be processed together with certain polymer materials to obtain polymer alloys with complementary properties. It is resistant to oil, water and mold, and has good recyclability. Occasionally allergies, higher-end products generally use medical grade TPU. The secondary material can be recovered 100%. TPU formability is not as good as TPE, but it is cheap.
TPE feels comfortable and soft, with excellent elasticity, which simulates the soft and smooth skin. It can be bonded well with PC plastic. The material can be recycled and used, which is slightly higher than TPU; but it is not resistant to aging, the surface is easy to scratch and the wear resistance is low. TPE is a non-toxic, odorless and safe material that is not sensitizing to human skin. Mid-to-high-end smart bracelet wristband material alternative.