The clutch is located in the flywheel housing between the engine and gearbox, and the clutch assembly is fixed on the rear plane of the flywheel with screws. The output shaft of the clutch is the input shaft of the gearbox. During the driving process of the car, the driver can press or release the clutch pedal as needed to temporarily separate and gradually engage the engine and gearbox, in order to cut off or transmit the power input from the engine to the gearbox, The clutch is a commonly used component in mechanical transmission, which can separate or engage the transmission system at any time. The basic requirements for it are stable engagement, rapid and thorough separation, convenient adjustment and repair, small overall size, small weight, good wear resistance, and sufficient heat dissipation capacity. It is easy to operate and labor-saving. The commonly used components are divided into two types: tooth embedded and friction type. The clutch, commonly known in Hong Kong as "Li Li Zi", It is a device that transfers the engine power of a car or other power machinery to the axle through a switch. The clutch is installed between the engine and the transmission, and is an assembly directly connected to the engine in the car transmission system. Usually, the clutch is installed together with the flywheel group of the engine crankshaft, which is a component that cuts off and transmits power between the engine and the car transmission system. The entire process of the car from starting to normal driving, The driver can manipulate the clutch as needed to temporarily separate or gradually engage the engine and transmission system, in order to cut off or transmit the power output from the engine to the transmission system. Its function is to gradually engage the engine and transmission to ensure a smooth start of the car, temporarily cut off the connection between the engine and transmission, in order to facilitate gear shifting and reduce the impact during gear shifting. When the car brakes urgently, it can have a separation effect, To prevent overloading of transmission systems such as transmissions and provide a certain degree of protection, the clutch is similar to a switch that engages or disconnects power transmission. The active and driven parts of the clutch mechanism can be temporarily separated and gradually engaged, and there is a possibility of relative rotation during the transmission process. The active and driven parts of the clutch cannot be rigidly connected, and any form of car has a clutch device, It's just a different form, and nylon thread is needed for clutch production. However, the existing nylon thread has a short lifespan when in use, and the clutch is frequently stepped on and not wear-resistant. Therefore, we propose a nylon thread for core-spun yarn used in automotive clutch panels.