Manual mold silicon rubber

Applications of sculpture molding silicone rubber :

sculpture molding silicone rubber  is also can be applied for manual mold design, PVC plastic mould, cement product mold, low melting-point alloy mould, alloy toy crafts, plastic toy, craftwork, gift and stationery, big statue, cultural relic duplication,pad printing orientation, electronic appliances vibration resistance, etc.

Features of the sculpture molding silicon rubber:

Low shrinkage, no deformation, good elasticity, high duplication times, etc.

Operation Instruction for sculpture molding silicone rubber:

 (1)  Correct mixing ratio

Component A is silicone rubber, and component B is curing agent or vulcanizing agent, usually the mixing ratio  will be 2-3%. Such as to 100G silicone rubber should be added 2G catalyst and then mix them totally(Note: the weight of the silicone and catalyst should be weighted correctly. According to local weather, the mixing ratio can be 100 to 2 under room-temperature 25 ⁰C; if the local weather is about 10 ⁰C, then the maximum mixing ratio should be 5%; When local temperature is -5 ⁰C, no reaction will happen between the silicone and hardener; once the temperature of local weather is 38-45 ⁰C, the mixing ratio of silicone and silicone rubber should be 1 %).

(2) Preparation of the Original molds

Firstly, you should deal carefully with the Original mold or the products you want to be molded. If no polishing of the Original mold or the products you want to be molded, the surface of the original mold or products is not so smooth or perfect, then the products made out of silicone molds will be not up to standard.

(3)Vacuum-Pumping Process

To mix the silicone and catalyst with a standard mixing ratio and then do the process of Vacuum-Pumping. Bubbles will come out during the mixing of the silicone and hardener, if without Vacuum-Pumping, the bubbles cannot be released from the mixture, as a result, there will be many bubbles in the finished silicone mold. Then the mold has a less tensile strength which will affect the reproduction times. Such an unsmoothed silicone mold will affect the quality of the production directly.

The brief descripsions about the sculpture molds silicone rubber

sculpture molds silicone rubber  is a white or red flowable liquid with a hardness of 22—50A° when cured. If large products and therefore multiple-piece molds are needed by customers, silicone rubber with higher hardness will be required for the molds. Conversely, soft silicon is indispensable for molds with complicated pattern and delicate details. The amount of curing agent admixture depends on the actual need of customers. More will be added for speedy drying and fast release and less when otherwise.

Any questions of silicone rubber for moldmaking, please feel free to contact Kaimi:

TEL: 086-755-89212369

FAX: 086-755-89948030

MOBILE:086-18938867528

Website:  www(dot)szrl(dot)net

E-MAIL: hyju(at)szrl(dot)net

skype:hyjiangying