NSP PROTOTYPES MANUFACTORY
Things to pay attention to when using silicone replica molds
NSP PROTOTYPES Technology LIMITED
TIME：2024/5/16
Things to pay attention to when using silicone replica molds
During the silicone molding process, you need to pay attention to the following issues:
Use of curing agent: The amount of curing agent should be adjusted according to the temperature. Reduce the amount of curing agent when the temperature is high. If too much curing agent is used, the mold will become too hard and brittle; if not enough, the operating time will be extended.
Treatment of air bubbles: During the mold opening process, if air bubbles appear in the silicone mold, a vacuum machine can be used to deal with them. If there is no vacuum machine, you can slow down the curing speed of the silicone mold by appropriately reducing the amount of curing agent added, so that the air in the mold can be gradually discharged and the generation of bubbles can be reduced.
Silicone replica mold
Uneven curing problem: If uneven curing occurs after the silicone mold is cured, it is mainly due to the inaccurate ratio of silicone to curing agent, or not carefully stirring evenly after mixing. Making sure you weigh the two accurately as required and mix the two thoroughly is key to solving this problem.
Prototype production: According to the provided 3D drawings, prototypes are produced through CNC processing, SLA laser rapid prototyping or 3D printing. This is the basic step for silicone molding.
Storage of the mold: In order to ensure the best use of the mold, it is recommended to store the mold for at least 24 hours before use.
Material selection: When making silicone molds, it is recommended not to add silicone oil to prevent changes in the physical properties of the silicone mold.
Silicone replica mold
Temperature control: During the vacuum casting process, the temperature should be controlled, usually 30-60 minutes of curing in a 60-70C thermostat, and 2-3 hours of secondary curing in a 70-80C thermostat if necessary. .
Mold service life: Generally, the service life of silicone molds is about 15-20 times. During use, attention should be paid to observing the quality changes of the mold to ensure the quality of the duplicate mold product.
In general, the above are some issues that need to be paid attention to when performing silicone replica molding. Following these precautions can help improve the quality and service life of the mold, while also ensuring the quality of the final product.
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