Modified bidirectional PTFE jointing sheets, also known as biaxially oriented PTFE or structured PTFE, represent an advanced solution for industrial applications requiring high sealing performance. These materials offer an optimal combination of chemical resistance, thermal stability, and superior mechanical properties, thanks to the bidirectional orientation of their molecular structure. The Sichem® product range by Planichem stands out for the use of different fillers that enhance the characteristics of modified PTFE, making it suitable for a wide range of applications.
These fillers may include materials such as silica, glass microspheres, and barium sulfate, each imparting specific properties to the final product. These variations allow the selection of the most appropriate material based on specific application needs, ensuring optimal performance in terms of sealing, durability, and chemical compatibility. Sichem® sheets are particularly recommended for use in industries such as chemical, petrochemical, food, and pharmaceutical, where operating conditions demand high-quality and reliable materials.
Sichem® Product Range – Biaxially Oriented PTFE Jointing Sheets
The Sichem® product range by Planichem consists of biaxially oriented PTFE Jointing sheets, developed to ensure an optimal combination of chemical resistance and excellent sealing performance. These materials are designed to operate within a wide temperature range, from cryogenic conditions up to +260°C, and are compatible with the full spectrum of aggressive media (pH 0-14).
Distinctive Features of the Sichem® Range
Biaxially oriented structure: Provides superior mechanical strength and reduced creep compared to conventional PTFE.
Controlled microcellular structure: Ensures high compression and sealing performance, even at low bolt torque values.
Multilayer versions available: Further improve sealing efficiency in critical applications.
Key Applications
Sichem® Jointing sheets are optimized for:
Irregular sealing surfaces or those with limited load capacity.
Replacement of envelope gaskets, thanks to their advanced sealing properties.
Critical applications, where seal failure is unacceptable and conventional PTFE materials are insufficient.
Advantages of Sichem® Technology
Thanks to a special manufacturing process, these sheets feature controlled microporosity and a closed-cell structure, ensuring:
Minimal deformation under pressure and temperature.
High dimensional stability and extended service life.
