The fundamental reason for the low frequency of mold silicone flipping
Mar 09,2024 Hanast
The environmentally friendly and resilient characteristics of silicone molds are preferred as ideal materials for flipping, opening, and replicating. They are mainly used for flipping molds in handicrafts, ABS materials, gypsum lines, cement products, etc. However, sometimes we may encounter the phenomenon of fewer flipping times. Below, we will explore the fundamental reasons and solutions for the shorter flipping times of silicone molds in liquid molds using HANAST silicone tape.
Many factors affect the number of times silicone molds are flipped, including product materials, the purity of raw materials used by customers during production, mold size, and complexity, all of which can lead to different flipping times.
Reason 1: Too much silicone oil was added during the mold-making process, which damaged the molecular weight of the silicone gel, resulting in less mold flipping and less durability of the mold. Therefore, it is not advisable to add too much silicone oil, especially white mineral oil, on your own, as this will damage the molecular weight of silicone and affect its tear resistance.
Reason 2: Is the pattern of the product simple or complex? For complex patterns, it is necessary to spray a release agent.
Reason three: Did you add fiberglass cloth to make large products, and the proportion of curing agent added was too high?
Reason 4: Has there been any vacuum treatment? The liquid silicone is viscous and requires vacuum treatment to make the silicone mold without pores.
Reason 5: The produced mold needs to wait for complete curing before being put into production 24 hours later. If the liquid adhesive is not fully cured and demoulded too early, the silicone rubber performance may also be low in tensile and tear resistance.
Reason 6: The temperature of different materials used for injection is 6-70 ℃ for unsaturated resin materials, and 100 ℃ for epoxy resin and polyurethane resin, which has a significant impact on the number of mold rotations.