Isostatic Compression Molding<\/figcaption><\/figure>\nBy the end of this process, you will have a PTFE shape with a shape resembling that of the final product, ready for the next stage.<\/p>\n
During preforming PTFE, you will require a pressure magnitude of about 3000 and 4500 pounds per square inch (psi).<\/p>\n
<\/span>Step 4: Sintering PTFE Preform<\/span><\/h3>\nSintering PTFE or baking PTFE involves subjecting the material to reasonable head to fusion. Normally, the PTFE sintering temperature is about 685\u00b0F to 720\u00b0F depending on the Teflon material grade.<\/p>\n
During the PTFE sintering process, various powder particles will fuse forming a complete solid section. In most cases, the sintered PTFE will remain in the baking chamber for 1 to 3 days, depending on Teflon material characteristics.<\/p>\n
You will allow the sintered PTFE part to cool ready for other processes. You can subject the molded PTFE products to hot coining. That is, using a firing technique while subjecting the cooled PTFE to reasonable pressure, you will improve the quality of the final Teflon components.<\/p>\n
In short, compression molding PTFE parts is straightforward and can produce sections with tight tolerance.<\/p>\n
<\/span>Comparing PTFE Injection Molding Process vs. Compression Molding<\/span><\/h2>\nAlthough injection molding is a versatile manufacturing process for most rubbers and plastics, it is not suitable for processing PTFE or Teflon. For reason, compression molding Teflon remains a viable and practical PTFE fabrication method.<\/p>\n
The reason why injection molding is not suitable for fabricating PTFE is the high melting point. Even above the melting point, which is about 327\u00b0C, PTFE has poor flow characteristics. Consequently, injection molding PTFE becomes impossible.<\/p>\n
<\/span>Examples of PTFE Compression Molded Parts<\/span><\/h2>\n
![\"PTFE](\"http:\/\/hansaplas.com\/wp-content\/uploads\/2023\/05\/PTFE-Compression-Molding.jpg\")
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