As an important tool for daily oral care, the post-processing process of the injection molded electric toothbrush has an important impact on its performance.
First of all, annealing is one of the common post-processing methods. During the injection molding process, plastic parts will generate internal stress due to rapid cooling. Annealing allows the product to cool slowly under a certain temperature environment and effectively eliminate internal stress. For the electric toothbrush, this can prevent its shell from deforming and cracking due to stress release in subsequent use, ensuring the structural integrity and appearance stability of the product, so that it can better withstand various external forces in daily use.
Secondly, grinding and polishing processes are also crucial. There may be some defects on the surface of the electric toothbrush shell after injection molding, such as parting lines, gate marks, etc. Through grinding and polishing, the surface of the shell can be made smooth and flat. This not only improves the aesthetics of the product, but also brings a more comfortable touch when the user holds the electric toothbrush, while reducing the adhesion of dirt and bacteria, making it easier to clean and maintain.
Furthermore, surface coating treatment significantly improves the performance of the electric toothbrush. For example, some electric toothbrushes are treated with antibacterial coatings, which can effectively inhibit the growth and reproduction of bacteria on the surface of the toothbrush and maintain the hygiene of the toothbrush, which is extremely critical for oral health care products. Some are also treated with wear-resistant coatings to enhance the wear resistance of the shell, avoid damage to the appearance due to frequent friction during long-term use, and extend the service life of the product.
In addition, ultrasonic cleaning as a post-processing step can thoroughly remove impurities such as mold release agents and oil stains remaining on the surface of injection molded products. For electric toothbrushes, especially those with more complex internal structures, a clean surface helps the stable operation of electronic components, prevents malfunctions due to conductivity or interference of impurities, and ensures the normal operation of electric toothbrushes.
Secondary injection molding or inlay processes are also often used. For example, soft rubber secondary injection molding is performed on the handle of the electric toothbrush to form a soft non-slip area. This greatly improves the stability and comfort of the user when holding it, reduces the risk of the toothbrush falling due to hand slippage, and also increases the personalization and differentiation of the product.
Finally, quality inspection is an important part of the post-processing process. Various testing methods, such as strength testing and waterproof testing, can be used to screen out unqualified products. Ensure that the electric toothbrush that flows into the market meets the standard requirements in terms of performance and provide consumers with reliable, safe and efficient oral care tools.
The post-processing process of electric toothbrush injection molding products improves its performance in many aspects. Whether it is structural stability, appearance texture or safety and comfort in use, these key post-processing steps are indispensable.
