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Apparently invisible. Chemistry in ceramics.: Daily Summaries Delivered
by Zschimmer & Schwarz Ceramco
Aware of how complex the problems related to the world of chemistry applied to ceramic production processes can be, we want to share our knowledge with those who want to orient themselves or train for passion or profession.Through a simple and direct language, the podcast aims to be an educational space with a focus on products, applications and processes.The journey unfolds along the ceramic production lines.At each stage a topic.At each topic a critical issue.At each critical issue, when possible, a solution.
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- Yesterday15 min
Surface protective treatments: chemistry, process and Z&S product range
Grinding and polishing operations can expose surface pores in ceramic tiles, allowing contaminants to penetrate and become trapped, thereby reducing the ceramic surface's resistance to staining. To address these issues, protective treatments are applied at the end of the finishing line. Their effectiveness depends not only on the physicochemical properties of the formulation, but also on its interaction with the ceramic substrate and the conditions under which it is applied.In this episode, we explore the fundamental principles of ceramic surface protection, with particular emphasis on the chemistry of colloidal silica. We also examine the key parameters affecting treatment performance, highlighting why formulation and application processes must be considered together.Finally, we introduce the POLISHIELD range from Zschimmer & Schwarz Ceramco, exploring the different protective and pretreatment solutions available to meet specific surface characteristics and production requirements.
- Oct 1, 202616 min
Dispersants for ceramic bodies: rheology control and slip management
In the wet preparation of ceramic bodies, dispersants play an essential role in controlling slurry rheology, allowing high solids content to be maintained while ensuring flow properties compatible with the production process.In this episode, we examine the main factors affecting slurry rheology: viscosity and thixotropy, raw material characteristics, composition of the aqueous phase, and the different chemical families and mechanisms of action of deflocculants. We also explore the role of dosage and the deflocculation curve, explaining why there is no universal solution and why the optimal working range must be determined experimentally for each specific ceramic body and process conditions.
- Sep 14, 202622 min
Back meshing of large ceramic slabs: safety, strength, and process control
The growing use of large ceramic slabs, with increasingly larger formats and reduced thicknesses, has introduced new challenges in terms of processing, handling, installation and safety. In this context, back-meshing is a post-firing process in which a reinforcing mesh is bonded to the back of the slab, helping to retain fragments in the event of breakage while providing additional support during subsequent processing, handling and use.In this episode, we explore the back-meshing process, from mesh selection and the role of the two-component polyurethane adhesive system offered by Z&S Ceramco to different application technologies and the cross-linking stage. A journey through materials, chemistry and application technology to understand how mesh, adhesive and process need to work together to provide effective and reliable reinforcement.
- Jul 13, 202621 min
Semi-finished media for solvent-based glues, inks and digital effects production
Producing digital inks, glues and ink effects for ceramic decoration is a highly sophisticated process that relies on the careful integration of multiple formulation components. Achieving consistent performance, long-term stability and reliable production quality requires the use of a range of specialized additives, each playing a critical role in ensuring proper product functionality and processability.In this episode, we revisit the concept behind the DECOFLUX DP range: a modular additive platform developed to support ink manufacturers and ceramic companies that produce their own digital inks and glues in-house. From pigment grinding to final dilution, we explore how each element of the platform — from pre-optimized grinding media and universal dispersants to viscosity modifiers and stabilizing agents — has been designed to address the practical and evolving requirements of the formulation
- Jun 12, 202617 min
Technological evolution of ceramic grit binders
Ceramic grit binders are often regarded as simple fixing agents, but their role within the production process is far more complex. In this episode, we explore how the management of rheology, particle suspension and application behavior directly influences the quality of the final result, and why the selection of a binder cannot be based solely on its adhesive strength.We trace the technological evolution of the GRANICER range, examining the characteristics and application logic behind its different product families. From solutions designed for dry applications to formulations developed for wet grit application, and up to the most recent systems engineered to provide greater flexibility, stability and integration with digital technologies, we analyse how each series was created to address specific production requirements.
- May 15, 202615 min
Sanitizing, biocides and preservatives: the role of the PREVENTOL range
This episode addresses the control of bacterial contamination in ceramic processes, a factor that is often invisible yet crucial for the stability of compounds and the quality of the final product. In a production context characterized by the unavoidable presence of organic substances, bacteria can rapidly proliferate, altering rheological properties and causing application defects.The episode analyzes the main intervention strategies, distinguishing between sanitizers, biocides, and preservatives, and presents the role of the PREVENTOL range in controlling contamination throughout the entire process.
- Apr 13, 202627 min
Chemical product labelling: a practical guide
Chemical product labelling plays a key role in ensuring safety and regulatory compliance across the entire industrial value chain. In this episode, we explore the European regulatory framework, focusing on how CLP, REACH and BPR interact, and how together they balance health protection, environmental safety and market access.We take a closer look at different product categories, highlighting their distinctions, areas of application and regulatory implications. We also examine the main technical communication tools — from labels and safety data sheets to the UFI — explaining their practical function and their importance in emergency response.A structured overview designed to help navigate obligations, responsibilities and best practices, turning regulatory requirements into a proactive tool for risk prevention and management.
- Mar 16, 202619 min
Tenacer: Z&S temporary binders
This episode explores the technological development of temporary binders for the ceramic industry, starting from the TENACER range developed by Zschimmer & Schwarz. In today’s ceramic manufacturing environment—marked by large-format tiles, ultra-thin slabs, super white bodies with high glass content, and increasing variability in raw materials—maintaining the mechanical strength of the green body has become a key factor for ensuring both process stability and final product quality.The podcast introduces the main product lines within the TENACER range, outlining their different technological approaches and formulation strategies, while also highlighting the industrial considerations that guide their application in production environments.The episode also addresses several critical aspects of the ceramic process, including how additives interact with other production variables, the issue of black core formation, rheological behavior, and typical dosage ranges. Overall, it emphasizes that the effectiveness of binders is never determined by the additive alone, but rather by the careful balance between formulation choices and process conditions.
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About Apparently invisible. Chemistry in ceramics.
Aware of how complex the problems related to the world of chemistry applied to ceramic production processes can be, we want to share our knowledge with those who want to orient themselves or train for passion or profession.Through a simple and direct language, the podcast aims to be an educational space with a focus on products, applications and processes.The journey unfolds along the ceramic production lines.At each stage a topic.At each topic a critical issue.At each critical issue, when possible, a solution.
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