Commonly used hardness of silicone mold products
Nov 28,2023 Hanast
The hardness of silicone products is mainly based on Shore hardness standard, and the instrument is also measured using Shore hardness tester. The hardness ranges from 0 to 100 degrees, and its use varies depending on the purpose of the product. Mold silicone products have different hardnesses depending on the process. What are the factors that affect the hardness of silicone mold silicone products?
Mold silicone processing can be used to make "low-grade" silicone rubber products with 0-20 degrees, and even if you have this material on hand, it is still very sticky. Such silicone products are often rare, and developing a mold for a liquid silicone product is particularly expensive. For a small number of people, it often costs thousands of dollars. Some silicone rubber products are produced using liquid technology, and silicone rubber products produced using liquid technology are prone to uneven edges due to material reasons. The liquid process is suitable for low-end silicone products and does not require very strict automatic assembly.
The second is the solid process. At present, the softness of the solid silicone process is at least about 30 degrees and the highest is about 80 degrees. Although it can reach a higher degree, the failure rate is too high and the product is very brittle and difficult to disassemble by itself. Therefore, the optimal softness and hardness for solid-state processing is between 30 degrees and 70 degrees. It cannot make soft products, but it can automatically unload the edges. The product has a beautiful appearance and no burrs.
Generally, the hardness of silicone rubber products is between 30-80, which is also the commonly used silicone gel hardness for most silicone products. Silicone rubber products have good toughness and elasticity. They are not easily deformed due to external forces and have a layer of oily substance, so they feel very smooth to the touch.