High pressure casting moulds made from porous BTPor resin
B&T WHITE is able to produce and supply the most complete range of porous resin moulds for the high-pressure casting of ceramic sanitaryware available on the market.
Today B&T WHITE is a modern and experienced partner for its customers. With its roots firmly embedded in the technology that has developed over the past decades its objective is to propose new, more appropriate solutions for an industry that has undergone considerable change over the years.
The most important aspect of the B&T WHITE offer is the production of the BTPor porous resin, developed through research of its proprietary know-how, for the high-pressure casting of ceramic sanitaryware.
The department is equipped with the most up to date equipment for the production of resin moulds having dedicated orthogonal drainage. Thanks to this unique resin, which exhibits a medium porosity compared to the micro-macro porosity resins currently available on the market, it is possible to take advantage of the benefits offered by both types.
In this context, the moulds can have either a cavity or model, in which case each production cycle produces one casting, or two or more cavities belonging to the same model, in which case there will therefore be two or more castings for each production cycle.
The resin moulds complete the B&T White offer for casting machines: the geometries and mechanical solutions are designed for faster and more efficient mould installation, following the FMR (Fast Mould Replacement) concept that was developed to drastically reduce the mould changeover times for high-pressure casting machines.
The FMR system makes it possible to achieve even greater advantages compared to traditional casting machines by reducing the mould changeover times even by 60%, while keeping within the guaranteed maximum of 120 minutes.
BT White also produces resin moulds for use on casting machines that are already on the market, and made by the most well known manufacturers, in accordance with their specific installation requirements.
Because of this, and together with an in-depth chemical-physical knowledge of the issues involved, it is possible to evaluate and fulfil all the porosity and mechanical strength requirements the customers may have.
BT White also introduces the “wettability” concept for porous resins. By controlling this parameter, it is possible to produce sanitaryware moulds that have high performance forming properties compared to those made by standard porous resin manufacturers.
Mould wettability has a direct influence on the migration of water, contained in the slip, through the porous resin during the pressure forming of the ceramic article.
By controlling this parameter, the BTPor resins are able to promote the separation of the liquid and solid phases of the slip during the press-forming process. This results in ceramic articles being more consolidated and therefore less subject to deformation following extraction from the press.
Controlling the wettability of the mould also allows lower de-moulding pressures to be used, which means that the pieces are less likely to become deformed when they are released from the mould.