When making silica gel products, it is indispensable to the help of silica gel mold. Liquid silica gel and thermoplastic mold will have similar places, but there are still differences in the treatment of silica gel.Liquid silica gel has good fluidity, fast vulcanization, more environmental protection, can meet the requirements of food grade.What are the characteristics of the liquid silicone mold?The following Xinjia for you to analyze:

    1. Shrinkage rate

    Liquid silicone molds do not shrink in the mold when they are used, but they will shrink to a certain extent after demoulding and cooling.As for the extent of shrinkage, it depends on the quality of the mold and the formula of the rubber.However, from the perspective of the mold, the shrinkage rate may be affected by the mold temperature, the material, the pressure in the mold cavity and the subsequent compression of the rubber, and the liquid silicone mold can effectively improve this situation.

    2. Parting line

    Determining the location of the parting line is one of the first steps in designing a silicone rubber injection die.The exhaust is mainly achieved by grooves located on the parting line. Such grooves must be located in the area after the injection of rubber material.The liquid silicone mold is designed in this way to avoid internal bubbles and reduce the strength loss of the adhesive.

    3, exhaust

    With the injection of liquid silica gel, the air trapped in the cavity of the liquid silica gel mold is compressed when the mold is closed, and then discharged through the ventilation groove during the mold filling process.If the air can not be completely discharged, it will remain in the rubber material, which often causes the product part to expose the white edge.The liquid silicone mold with good quality is generally reasonable for the width and depth of the ventilation groove. 

    Above is the performance of Xinjia to analyze some characteristics of liquid silica gel mold. The main thing to remind you is that when producing liquid silica gel, you need to choose the right mold for the production of products, but also need to choose good liquid silica gel raw materials to ensure the quality of silica gel products.Just our new best can provide you with high quality liquid silica gel raw materials, you are welcome to understand the consultation.