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Bonding method for processing Teflon products

2025,08,14
In the processing of PTFE products, it is often necessary to combine different parts of the same material or PTFE with other metal or non-metallic materials. The use of binder is the most simple and practical choice. However, since the surface tension of PTFE itself is lower than that of all other solid materials, it is impossible to bond directly. The surface treatment of PTFE products is the key to the bonding effect.
1. Physical roughening process
In fact, the physical roughening process is plasma treatment. Plasma is also called glow discharge. For material surface treatment is a kind of energy called cold plasma. Under the atmospheric pressure of 0.13-0.18mpa, high-frequency discharge generates high-energy ions to splash the PTFE surface and generate many fine concave convex. Compared with chemical treatment, this treated surface can obtain higher bonding strength because it does not receive the action of air and ultraviolet light.
2. Chemical treatment process
It mainly includes the preparation of chemical treatment solution and PTFE surface treatment. The available chemical treatment solutions include sodium naphthalene treatment solution and liquid sodium ammonia solution. The former is mainly used in China.
3. Bonding
The PTFE products with the above surface treatment and the materials required to be bonded with them can be bonded with a general adhesive.
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Mr. aopan

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18912117099

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As a renowned one-stop OEM factory in China, Aopan is committed to providing customers with OEM seals to avoid wasting a lot of time looking for factories and obtaining source information from China, ultimately enhancing their competitiveness.   Aopan excels in metal parts, PTFE, rubber, UHMWPE, PA66, compressed asbestos-free fibers and polyurethane seals. Particularly, PTFE-coated rubber seals have been applied in many facilities such as chemical dosing pumps, industrial valves and dehumidifiers.   Established in 1992, at the beginning, distributors and a few companies required us to produce PTFE seals based on samples and drawings. We began to help valve companies OEM PTFE parts for valves in 2002 and provide PTFE-encapsulated CNAF gaskets, mancover seals and PTFE-encapsulated O-rings according to customer requirements. Over the years, Aopan has OEM many different seals and understands the requirements and application fields. We recognized our OEM capabilities and advantages and decided to start an international business. This is a big stage, an opportunity and a challenge.   In 2018, Wencheng started its CNC machining business based on the precision machining experience it had...
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