From 10 years later, with the arrival of smart phones, there has been a wave of upsurge in the world, and they have replaced the original button phones. Diversity, in addition to the basic protective function of silicon, it also refers to more art and beauty in it, especially in the shape design, color selection, printed patterns, etc. of the mobile phone silicone case, these design innovations are through Innovations in mold processing or surface technology for silicone sleeves can be accomplished. Do you know how silicone phone cases are made?
First carry out the rubber mixing process, in which color glues of various colors are added to become the required color of the product, and after the shape of the product is obtained through high-temperature molding and hydraulic molding, it can be sprayed, silk screen, pad printed, and thundered. Injection, thermal transfer and other processes to make the appearance of the structure!
1. Prepare materials
Silicone mobile phone case is a mobile phone case made of silicone material, and the silicone material itself is translucent, and its state is like plasticine played after hours. If you want to make a colorful mobile phone case, you must add silicone material Add the corresponding colorant, which is called color masterbatch (color paste) in the industry. It’s just that when the silicone material purely added with color masterbatch cannot meet the molding conditions of silicone mobile phone cases, it is also necessary to add a bridging agent (vulcanizing agent) and mix and disperse the color masterbatch and bridging agent evenly in the rubber mixing machine. Finally, the size and weight required for molding can be cut out, and the next step of molding can be carried out.
2. Molding
The raw materials required for the silicone mobile phone case have been prepared, and now these silicone raw materials can be “shaped”, which is often referred to as vulcanization molding in the industry. First of all, the molding mold of the silicone mobile phone case should be fixed on the vulcanization molding machine, and the temperature, pressure, time and other parameters required for molding should be set. After the temperature of the molding machine reaches the set value, discharge the prepared silicone mobile phone cover raw materials into the molding mold, and operate the molding machine to press and vulcanize the mold. When the curing time reaches the required time, the silicone raw material has been fixed. The shape of the mobile phone case is formed, and the mold is opened at this time, and the silicone mobile phone case is removed from the mold.
3. Trimming
After the silicone mobile phone case is taken out of the molding mold, there are still some rough edges that will affect the appearance of the mobile phone case. It is necessary to trim the rough edges with a blade or scissors. This process is trimming, or edge removal and processing. The trimming of the silicone mobile phone case is a purely manual operation, which requires the operator to be careful and patient. If the operator is not careful, it is easy to cause incomplete trimming of the burr and affect the appearance of the silicone case.
4. Secondary sulfur addition
In order to remove the bridging agent odor added in the raw material of the silicone mobile phone case and stabilize the size of the silicone case, it is necessary to add sulfur to the mobile phone case after trimming. Usually, it is baked at a temperature of 180°C in a vertical oven for 2 hour to complete. If it is a silicone sleeve that does not need to be printed or sprayed, it can be packaged and shipped after the second vulcanization is completed.
Post time: Aug-14-2023