Safety in use even under harshest conditions
Berghof containers meet all demands made on containers for use in chemical, semiconductor, and plating technologies.
They are manufactured from virgin PTFE (Polytetrafluoro ethylene, Dyneon™) because only these fluoroplastics combine the required properties in an ideal manner.
Using the specialized isostatic molding technique, the containers are seamlessly molded and are strain- and deformation-free. The interior surfaces exhibit an extremely dense and anti-adhesive surface film and require no mechanical rework.
Berghof containers made of PTFE are available in a wide variety of sizes and capacities to meet practically every need.
Aside from the containers in our standard product line, we can also manufacture PTFE containers to meet specific customer requirements with regard to sizes or thicknesses, as well as with modified flange designs. In addition, any desired number of seamlessly integrated intake and outlet connectors are available in any position and any size and design.
- Chemical resistance against practically all chemicals, absolutely resistant to acids, bases, and solvents
- Employable over a wide temperature range, from -200°C to +260°C
- Form-stability, even at high temperatures
- Excellent anti-adhesive properties, thus making them easy to clean
- Electrically nonconductive
- No water retention
The isostatic molding method in PTFE processing
Isostatic molding offers the possibility of manufacturing complex molded shapes as well as hollow bodies and liners while, at the same time, offering significant reductions in both the amount of material employed as well as the mechanical rework required.
The isostatic molding method is based on the physical law that pressure propagates uniformly in all directions in gases and liquids and produces forces on the surfaces under pressure that are directly proportional to these surfaces. In actual PTFE processing, a rubber mold is filled with PTFE powder and then sealed against liquids. This mold is then placed in the pressure vessel of a molding unit.
Advantages of the Isostatic Molding Method
- Quality advantages thanks to isostatic compression
The advantages of isostatic compression molding can be illustrated by means of appropriately enlarged REM images.
When magnified 100 times the granulate particles of the original material can still be identified in PTFE if it has been subjected to single-axis compression molding.
By contrast, isostatically compression-molded PTFE shows a significantly more consistent surface structure. It is roughly equivalent to single-axis compression-molded TFM™PTFE. However isostatically compression-molded TFM™PTFE achieves a much finer and smoother structure.
Furthermore, when magnified 2,500 times, in single-axis compression-molded material flaws become visible, which no longer occur in isostaticaly compression-molded TFM™PTFE.