There are two main methods of making mold with liquid silica gel, one is brush mold, the other is irrigation mold.In the process of making the mold, the brush mold or the irrigation mold mainly depends on the size and shape of the product mechanism. 

    Silica gel irrigation mode is suitable for the small items and well-shaped big flat products, because be done product size uniform, simple structure, is advantageous to the liquid silicone can flow flat on its own.Silica gel brush mold is suitable for fine pattern and complex structure of the product, are suitable for brush to brush mold.Here are the essentials and operational details of the brush mold and the irrigation mold.  

    A method of filling mold is actually very simple, but important to Z according to the product size to choose the appropriate hardness.The general size of the product between 50-2500px, the choice of hardness in 30 degrees of silica gel injection mold;The size of products above 100 cm, choose 35-40 degrees of mold silica gel;Product size is less than 30 cm, gram choose 15-20 degrees of mold silica gel.The operation time of the mold silicone filling mold is generally 30-40 minutes, and the complete curing takes 3-4 hours.But the mold of the mold is easy to produce bubbles, and the bubbles are difficult to be discharged.So when you do silicone mold, you need to use a vacuum machine to vent the bubbles.

    Brush mold is a very high technical content, according to the product structure and pattern trend to determine the Z high parting line, determine the good parting line will be divided into two parts of the product structure.Do piecework brush mold need to use sludge as auxiliary material, sludge can be reused.The operation time of brushing one layer of silica gel is 10-15 minutes.The number of layers to brush the silicone mold is about 3-4 layers, and several layers of gauze need to be added in the middle to improve the effect of enhancing the tear resistance.Silica gel mold can be used 24 hours after curing, which can improve the service life of the mold and the number of turning over.