Five Steps to Making a Toothbrush：
1. Brush handle injection molding: Pour the raw material of plastic into the barrel of the injection molding machine, melt it by high temperature, and continuously extrude it from the die with a push rod or a rotating screw (the shape of the die is the required shape) The cross-sectional shape), and it is the required semi-finished product after cooling.
2. Tufting: implant bristles into the brush head of the toothbrush through the tufting machine
3. Grinding: The bristles are sharp after cutting, and if they are not smoothed, they can easily cause injury. Therefore, after the bristles are implanted, the tips of the bristles need to be rounded to prevent damage to the oral teeth during use.
4. Product testing: Because of the high frequency of using, the requirements for the strength and elasticity of the toothbrushes are very high.
5. Packaging: Generally, an ultrasonic welding machine or a heat sealing machine is used to seal the plastic packaging of the toothbrush to avoid the bacteria invading.