RTV 3428 A+B is a food approved silicone rubber that can be used for the production of moulds for chocolate, sugar, marzipan and for producing decorative sugar, pieces of bakery, biscuits and confectionery products.
It is a two component silicone elastomer that crosslinks at room temperature by polyaddition reaction. The polymerisation can be accelerated by heat (max. 150 °C).
The silicone components are delivered as two component low viscosity liquids, which once mixed and cured, transform into an elastic and resistant moulding material. Polymerisation occurs without formation of heat.
RTV 3428 has a shore hardness of 28 and is exceptionally strong with excellent tear strength.
This grade is available with three seperate catalysts - Rose / White and Translucent. This material does have Aerospace approval when used with the Rose (Pink) catalyst. The rose and translucent catalyst options are available on a made to order basis.
Example of Applications:
- Production of flexible moulds with excellent details reproduction, mechanical resistance and duration.
- Production of thermal expansion formers for composite materials (the aeronautic industry, boat-building, etc.).
- Production of moulds intended for moulding objects in chocolate, sugar, marzipan and for producing decorative sugar, pieces of bakery, biscuits and confectionery products.
Please contact the Mouldlife sales department for advise on food regulations and compliance of the silicone rubber with different food stuffs.