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PTFE coatings

One material – endless possibilities

 

 
PRODUCTS | PTFE coatings

    PTFE coatings and linings

    With properties like

    • universal resistance to chemicals
    • use from -200°C to +260°C
    • lowest friction coefficient of all solids
    • completely non-stick
    • very good electrical insulation properties

    PTFE offers almost unlimited potential applications. The material is used in the food industry, the pharmaceutical industry and medical technology, in the construction industry and mechanical engineering, in the automotive industry and aircraft construction as well as in electrical engineering. But that's just a small number of the potential applications.

    PTFE is not only used in its natural colour, pure white. Special properties - such as high resistance to wear - are achieved by adding various products in varying processes. In this way, property profiles can be achieved which, for example, give the component a much longer service life than pure PTFE.

    PTFE does not age, nor does it become brittle. In addition, no critical plasticisers are released and, as waste, the material does not harm the environment. Today, thousands of tons of PTFE waste undergo almost 100% separation into their original particles and, after a cleaning process, are again polymerised into high-quality PTFE.

     

    Your contact person

    Daniel Borst
    Sales consulting
    T +49.7143.9609-125
    F +49.7143.9609-100
    d.borst@b-u-g.de

    Uwe Friedland
    AL Isostasy + Development
    T
    +49.7143.9609-153
    F +49.7143.9609-100
    u.friedland@b-u-g.de

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    The variety of applications for PTFE is limitless

    PTFE is always preferred to other materials if several of its excellent properties are required for the same component. For example, in bridge bearings that require a low friction coefficient and are exposed to ambient temperatures of -50°C to +50°C. Or for electrical insulations that are subject to extreme temperature fluctuations in the aerospace industry. PTFE parts are also required for dental treatments to produce oil-free air. In the paper and printing industry, roll covers, slide rails and deflectors made of PTFE ensure that paper sheets glide smoothly and dirt-free. The material is widely used in the food industry – for example in filling machines for a wide variety of liquids or in bakeries as a roller for baked goods. The chemical industry uses PTFE for lining containers, pipelines and seals. In addition to chemical resistance, excellent non-stick properties and high heat resistance are also in demand.

    Application in high frequency technology

    Due to its outstanding electrical properties, PTFE is used extensively in high-frequency technology. The very low dielectric constant of 2.1 and the dielectric loss factor of tan δ < 0.0001 enable the material to be used as a transmitting and receiving antenna in radar and microwave equipment. In combination with other properties – such as universal chemical resistance to acids and alkalis and resistance to ageing – PTFE is very well suited for use as a signal transmitter and receiver in tanks, but also outdoors in radio and radar systems. Moulded, solid and intricate components made of PTFE guarantee the functional and economic requirements in the high-frequency sector. With Beichler + Grünenwald's precise machining technology, our parts are made with the highest precision.

     

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    PTFE – moulded parts and finished parts

    Since PTFE is a very high-value plastic, it is almost always worthwhile to produce moulded parts that are as close as possible to the final component. This is why Beichler + Grünenwald concentrates on this manufacturing method, whereby the production is carried out with tools manufactured in-house using hydraulic and isostatic presses. Technically, both linings of metal housings and linings of metal cores can be produced in any shape. State-of-the-art CNC-controlled milling and turning machinery ensures the required precision of the components.

    Furthermore, Beichler + Grünenwald manufactures shapes and components by extrusion of round, hollow, flat and special profiles, which can be produced in virtually any length. In addition, we also manufacture ready-to-install parts from these profiles. With our combined automatic turning and milling machines, which are specially designed for the processing of profile bars, we not only work extremely precisely, but also cost-effectively.

    Pressing process

    PTFE semi-finished products are manufactured by either static or isostatic pressing. The difference between the two processes lies in the pressing direction used to make the blanks. The blanks made from both pressing processes are sintered in special furnaces.

    In static pressing, PTFE is compressed into press moulds with hydraulic pressure in axial direction to form simple moulded parts, whereas in isostatic pressing, the material is pressed from all sides with uniform pressure using specially cut tools. The isostatic pressing process optimises the already excellent properties of PTFE due to the exceptionally homogeneous structure of the material. A further advantage is that even housings with complicated contours can be lined with PTFE. In this respect, there are limits to the process of static pressing. Beichler + Grünenwald designs and engineers tools for customer-specific component production that enable efficient material savings of up to 90%. In addition, we use special processes to prepare the surfaces to be coated in such a way that an absolute, vacuum-tight bond is achieved. 

     

    FIND OUT MORE!

    Would you like to find out more about PTFE? This applies to all industries: With this high-performance plastic, the most diverse technical requirements can be implemented constructively at the highest level. We would be happy to provide you with a personal consultation. Do not hesitate to contact us and request a quote.

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