SM401 Investment is a gypsum bonded investment formulated for the casting of Aluminium shoe mould plates using silicone rubber patterns
SM401 is specifically designed for the manufacture of aluminium shoe mould plates for the production of shoe soles. This method of manufacture is used to produce soles for many of the leading names in the training shoe industry.
A typical master shoe mould is constructed from wood, metal, or plastic. Silicone is then poured over the master mould and left to cure. Once set, the Silicone mould is stripped from the master, SM401 is poured into it and allowed to set.
The plaster mould is removed from the Silicone mould and dried out in the furnace. The plaster mould is then set into a frame and molten aluminium is poured over it, the metal is left to cool and the plaster is removed from the Aluminium casting.
|Powder : Water Ratio||100 : 40|
|Work Time @ 22ºC||10 - 12 minutes|
|Initial Set Time @ 22ºC||15 minutes|
|Setting Strength @ 90 minutes||200N|
|Setting Expansion @ 2 Hours||1 - 1.2%|
|Thermal Expansion @ 700ºC||0.55 - 0.65%|
Industrial Investment is a Block Mould material and has the following advantages over shell: