How to casting resin into silicone molds

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If you need more information of  RTV 2 molds making materials  silicone rubber ,you can contact Miss Yolanda at any time :

 RTV-2 molding silicon rubber is mainly applied for making various molds,such as reproduction of concrete or cement , poly resin, epoxy, polyurethane-polymer, plaster, gypsum, soaps, candle & lighting, architecture, decorative  arts and crafts, plastic toy, gift and stationery, big statue, cultural relic product, etc..

Application of RT 2 molds making materials silicone rubber :

For best results, allow the mold to air cure an additional 24 hours before using it in production .

8.      Allow the rubber to cure for 2-4 hours at 24C before removing the cured rubber mold from the pattern. Heat acceleration not recommended with this product.

7.      Pour the deaired material slowly in a steady stream from one end of the mold box so that the material flows evenly over the pattern. This should minimize emtrapment of air bubbles under the flowing material. Areadymold may be poured firstly over the pattern, which will also help reduce the possibility of entrapping air on the pattern and in the cured rubber.A mold release may be applied on the pattern first to improve release.

6.      Bleed air slowly into the vacuum chamber. When the chamber is at atmospheric equiplibrium,remove the cover plate and take out the container.

5.      Though it is often unnecessary to deair the material due to its low viscosity some may choose to do so. If so,place the container into a vacuum chamber and evacuate the entrapped air from the mixture using a vacuum pump capable of achieving 29 inches of mercury vacuum.The mixture will rise, crest and then collapse in the contanier. Interruption(bumping) of the vacuum may be necessary to prevent overflowing the container. Keep the mixture under full vacuum for 2-3 minutes.

4.      Weight the proper amount of catalyst into the container. Mix the base and catalyst together by stirring with a stick until a uniform color is obtained. Scrape the container walls and bottom well to insure a thorough mix.

3.      This is a 100 Part A to 2 Part B mix ratio by weight.Weigh the desire amount of base into a clean mixing container.

2.      Shake the catalyst container (Part B) well before use.

1.      Stir the base (Part A) well beofre use (except when depending on machine ).

TECHNICAL GUIDELINES of RTV 2 molds making silicone rubber :

How to casting resin into silicone molds

RTV 2 molds making silicone rubber :
for resin&plaster artwork molds making
for soap&candle molds making
for gypsum figurine