7/14/2023 0 Comments Peek plastic injection molding![]() ![]() Keep adding powder and repacking until the mold is filled with the required amount of powder. To avoid the formation of black spots during molding, the internal surfaces of the mold must be spotless.Ĭoat the molding surfaces with mold release and allow it to dry.įill the tool with powder, place the seal ring on top and apply approximately 5,000 psi (350 bar) of pressure to pack the powder. PEEK materials must be kept clean and free of cross-contamination. To prevent moisture from causing bubbles, the PEEK powder should be dried for 3 hours at 150 ☌ or overnight at 120 ☌. Using pellets would also make it more difficult to achieve equivalently high packing density, which could lead to voids in the molded part. ![]() The lack of shear forces in compression molding makes it less suited for molding pellets, which would result in grain boundaries between compressed pellets that would reduce mechanical performance similar to weld lines. Use fine powder grades to achieve the best-performing compression molded parts. PEEK / VICTREX® Compression Molding Process KetaSpire® PEEK from Solvay Specialty Polymers PEEK is often used to make medical implants. ![]() PEEK is used to produce large seal rings and other parts for the oil & gas industry.
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