RTV-2 Molding Silicon Rubber for Cornices

RTV-2 Silicon Rubber for Cornices mold making :operations

If the customer wants to make large products and large size molds, the mold should be made of silicon rubber with high hardness. On the contrary, if the mold with fine and precision patterns, it should be made of silicon with low hardness. The amount of the curing agent depends on the actual requirements of the customer. If molds requiring fast drying and demold, more curing agent is needed; contrarily, if molds requiring slower drying and demold, less curing agent is needed.

(Note: our company does not recommend you to add silicone oil. If a special soft silicone mold or fine detailed and complex patterns products are required, 5%-10% silicone oil can be added to soften the mold for easy demold.)

Features of mould making silicone rubber

The differences

hy620 silicone rubber  is mainly used for molds with small, delicated patterns. Pouring method is the best way because of good fluidity. The hardness is 20 shore A.

hy625 silicone  is for medium size molds making. It’s also used for pouring methods. The hardness is 25 shore A.

hy630 silicone  is applicable for large mold making since hard hardness. Both pouring and brushing method are ok. The hardness is 30 shore A.

Frequently asked questions of HTV-2 Silicon Rubber for Cornices mold making

Why does the silicone rubber mold have few molding times?

       The silicone rubber mold has few molding times is due to follwoing reasons: adding too much silicone oil which will destroy the molecular of silicone rubber; making the mold for small and fine detailed products with higher hardness silicone rubber which is easy to break; making the mold for large products with soft silicone rubber which will reduce the tensile and tear strength of the mold, and the mold will have deformation. Thus, we should take the proper silicone rubber to make the mold for suitable products.