Dorfner’s high-quality, mineral-based filler systems for modern kitchen sinks and worktops made of composite materials give free rein to design creativity. At the same time, we support our customers with our unique expertise: as a filler pioneer for quartz composite sinks and development partner, we have brought functional colored fillers to market maturity.
Many advantages
Today, we develop customer-specific color sand mixtures with high technical performance and color variety from over 150 pure colors. In addition, our fillers for composites in the kitchen sector are technically optimized so that they noticeably reduce customers’ system costs.
Attractive surfaces with customer-specific color settings
Mineral-based composites from Dorfner offer a wide range of advantages for all areas:
Kitchen sinks and worktops made of mineral cast offer a wide range of benefits: They are hard-wearing, durable and temperature-resistant. For example, there is no heat build-up in quartz composite kitchen sinks, which can lead to stress cracks in the material. Kitchen worktops made of engineered stone are also characterized by a high level of hygiene. What’s more, composite kitchen elements are easy to process and economical to manufacture – especially with filler systems from Dorfner based on high-quality raw materials and sophisticated finishing processes.
Attractive, modern kitchen sinks made of composite materials – for example quartz composite sinks – are created reliably and economically with Dorfner fillers from the GRANUCOL® family. These give both designers and manufacturers the greatest possible freedom. Whether color variation, surface texture or color effects – thanks to filler systems from Dorfner, there are virtually no limits to sinks made of composite materials. Naturally, the colors remain permanently brilliant and are highly “immune” to chemical and mechanical stress.
Visually impressive and functional at the same time: worktops made of composite materials in the kitchen are not only very aesthetic, but also extremely robust against chemical, thermal and mechanical stresses. Thanks to their special abrasion resistance, the surfaces of the worktops remain visually flawless even after years of heavy use. Dorfner’s branded fillers for composite materials make composite worktops the perfect base for any kitchen work.
Kitchen sinks and worktops made of mineral cast offer a wide range of benefits: They are hard-wearing, durable and temperature-resistant. For example, there is no heat build-up in quartz composite kitchen sinks, which can lead to stress cracks in the material. Kitchen worktops made of engineered stone are also characterized by a high level of hygiene. What’s more, composite kitchen elements are easy to process and economical to manufacture – especially with filler systems from Dorfner based on high-quality raw materials and sophisticated finishing processes.
Attractive, modern kitchen sinks made of composite materials – for example quartz composite sinks – are created reliably and economically with Dorfner fillers from the GRANUCOL® family. These give both designers and manufacturers the greatest possible freedom. Whether color variation, surface texture or color effects – thanks to filler systems from Dorfner, there are virtually no limits to sinks made of composite materials. Naturally, the colors remain permanently brilliant and are highly “immune” to chemical and mechanical stress.
Visually impressive and functional at the same time: worktops made of composite materials in the kitchen are not only very aesthetic, but also extremely robust against chemical, thermal and mechanical stresses. Thanks to their special abrasion resistance, the surfaces of the worktops remain visually flawless even after years of heavy use. Dorfner’s branded fillers for composite materials make composite worktops the perfect base for any kitchen work.
We have accumulated and continuously expanded our know-how in the field of functional fillers over decades for the benefit of our customers.
More than 30 years ago, Dorfner played a key role in the development of the quartz composite kitchen sink with its fillers, anchored in the patent and has continuously expanded its expertise and know-how ever since.
It is not without reason that we can rightly claim today that our products have created market leaders. The Dorfner Effect.
Quality begins with the starting product – Dorfner’s pure natural quartz with its unique spaeroid grain shape. In addition, this base leads to top-coated fillers and thus to uniform coloring in the kitchen sink. A convincing combination.
Dorfner fillers are color and heat resistant, prevent blushing in boiling water and extreme temperature changes, and offer excellent scratch resistance thanks to their high hardness – for long-lasting kitchen sinks.
In addition to the advantages of durability for economic efficiency, Dorfner fillers offer direct savings potential thanks to their high filling level. This is achieved by the
Completely quartz flour-free filler mixes with optimized rheology but without health hazards – not subject to labelling!
In cases where quartz flour cannot be dispensed with for rheological reasons, we offer dust-reduced filler mixtures to minimize health risks.
Mineral-based composites from Dorfner:
Sustainable filler systems of the future.
Dorfner is a development partner for innovative filler systems that help to make products more sustainable and resource-efficient. As an expert in composite materials, Dorfner invests its extensive know-how in the further development of products and processes for composite materials based on renewable, natural raw materials.
From development to market launch:
We are here for you!
We see ourselves as a development partner for our customers in the field of mineral-based composites and support them with a professional application technology service and our R&D department: from product development through to production.
Casting tests according to individual customer requirements can be carried out at Dorfner on our own
systems, so that new filler solutions can be perfectly and smoothly integrated into the customer’s own processes.
If required, we can also support you with recommendations on machine technology and suitable resins and molds.
If you would like to find out more about Dorfner services for the manufacture of quartz composite sinks and our broad product portfolio, please contact us.
Christian Kerber
Head of Business Unit Composite Solutions
Phone: +49 (0) 151 11167285
E-Mail: christian.kerber@dorfner.com
Gebrüder Dorfner GmbH & Co. KG
A company of the Dorfner Group
Scharhof 1, D-92242 Hirschau
© Germany 2025
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