Bretonstone is a patented technology invented in the early-1970s by Breton S.p.A., a privately held company of Castello di Godego (TV) in the north-east of Italy and supplier of machines and technologies for making engineered stone. Nowadays most manufacturers of engineered stone use this patented Bretonstone system, also known as vibro-compression under vacuum.
In the early-1970s Marcello Toncelli, founder of Breton, started developing the Bretonstone system, which allows to produce a solid surface similar to granite, using small stone aggregates and stone-like materials. The composite material is manufactured in slabs, which can be worked as natural stone, instead of blocks that should have been cut.
Basically the vibro-compression vacuum technology, used by Bretonstone system, consists of blending the natural aggregate of stone with a polymer mix (usually unsaturated polyester resin), taking away air with a vacuum, and catalyzing the molded product whilst vibrating and applying pressure to this mix. Then the mixture is heated, and the output is a slab of non-porous and quite stable engineered stone.
The following improvements led the agglomerated stone to obtain the same hardness as granite, when siliceous stone or quartz were added in the mix.
- veined marble
- today also “exotic granite” effect
- with colored glass inserts
- with crystal fragments
- with mirrors pieces
- with semi-precious stones
- with brass filings
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