Transparent Frit

Transparent frit in our production range is mainly applied in glaze systems where post-firing clarity is essential. It is commonly used for white tableware and porcelain bodies where the glaze must remain colorless and visually clean after firing.

GlazePeak transparent frit is specifically developed as a high temperature transparent frit, optimized for high-silica, high-alumina, and high-calcium glaze systems used in tableware and sanitary ceramics.

 
Compared with low-temperature transparent frit systems, this high-temperature series focuses more on structural stability during peak firing. Alkali content is intentionally controlled to reduce excessive melt activity, which helps maintain glaze–body compatibility under demanding kiln conditions.

At high temperatures, it forms a well-distributed glass phase with strong light transmission rather than surface haze.

GlazePeak transparent frit 301# is engineered to remain chemically and structurally stable across a firing range of 1200–1300°C, covering the most common high-temperature cycles used in:

①Tableware glaze
②Sanitary ware transparent glazes
③High-temperature colored glaze
④Soft matte glazes blended with raw materials

The 301# frit maintains controlled viscosity at high temperature, preventing excessive glaze flow, edge thinning, or surface waviness.

In practical kiln operation, the relatively higher softening point helps suppress early gas release, which reduces the chance of pinhole formation. The balanced CaO content supports sufficient glaze flow at peak temperature without causing over-running. When properly matched with the firing curve, the glaze surface remains smooth while avoiding defects typically associated with excessive flux.

As a high-temperature resistant frit, our company has been producing it stably for over 10 years, ensuring a stable supply and production stability.Thermal expansion is often the deciding factor in high-temperature glaze design. This series is adjusted to maintain a COE in the range of 57–60 ×10⁻⁷/°C, which aligns well with many porcelain and stoneware bodies used in tableware and sanitary ware production. When the expansion match is correct, problems such as delayed crazing or edge shivering become far less likely during cooling and long-term use.

GlazePeak transparent frit 301 and 3018 are formulated with high SiO2 and Al2O3 content, combined with optimized CaO levels and low Na2O / K2O ratios.The clarity remains stable even at elevated firing temperatures, making it suitable for premium tableware finishes.

Each batch of GlazePeak transparent frit undergoes strict internal quality control, including:
①Chemical composition verification (XRF / wet analysis)
②Particle size distribution testing
③Melt behavior and viscosity evaluation
④Thermal expansion measurement

These data-driven controls ensure that laboratory results translate reliably into large-scale production. Our technical team also supports customers with formulation optimization based on body composition, firing curve, and desired surface finish.

When selecting high-temperature transparent frits, we focus on their firing stability, coefficient of thermal expansion matching, and surface transparency. Frits of models 301 and 3018 can address these issues without the need for large amounts of alkaline flux, which can reduce the long-term performance of the glaze.

For export-oriented tableware production, this stability reduces repeated glaze adjustment and shortens development cycles.

If you are looking for highly transparent frit glazes and a reliable frit supplier, please contact us. Our team is ready to provide you with product usage guidance and technical service support.

Feel free to contact Zibo GlazePeak for technical data or sample evaluation.

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