Kepital® F Datasheet. Acetal (POM) Copolymer. Supplied by Korea Engineering Plastics Co., Ltd. Create your free Prospector account to view this. Informationen on KEPITAL® F POM grade from Korea Engineering Plastics Co. Ltd. KEPITAL’s product range, from standard unfilled grades to specialties, is .. Shear strength of KEPITAL F at various temperatures. (ASTM D, t 3 mm, .

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Decrease injection pressure and check for undercut or insufficient draft Clean mold surface Increase the number of ejecting pins Lower the mold temperature and increase mold close time. Or if you don’t have an account with us yet, then click here to register.

Injection molding is one of the common manufacturing methods for thermoplastics including KEPITAL as to allow even complicated design and cost-effective production. For more information about Material Data Center visit www. Check here, which other Kepital datasheets, application examples or technical articles are available in Material Data Center. Shear strength represents the maximum load required to completely shear a sample by the maximum strength of a material that is influenced by shear stress.

In order to obtain a high quality of product out of KEPITAL, the recommendations and check-points on the injection molding machine are the following:. As shown in Figurethe weight of a molded part increases upon the hold pressure time and then stops at a certain point. In order to prevent odor nuisance, thermally damaged material can be cooled down in the water bath. Tribological properties Tribological properties are highly affected by driving conditions such as pressure on the contacted surface, velocity, temperature, surface roughness etc.

For access to this extra information a registration is requested. Most of the time affecting the cooling time is the hold time. The UV causes discoloration and surface chalking resulting in decomposition, and finally serious deterioration of mechanical properties. Troubleshooting guide for KEPITAL Troubleshooting guide for KEPITAL Processing problem Causes Remedies Sticking in cavity Higher resistance to eject force Insufficient cooling time Decrease injection pressure and check for undercut or insufficient draft Clean mold surface Increase the number of ejecting pins Lower the mold temperature and increase mold close time Short shot Insufficient flowability by low melt or mold temperature Improper design with small gate or narrow flow channel Unbalanced filling Insufficient metering stroke Increase the cylinder temperature and mold temperature.

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KEPITAL® F – KEP Americas

In general, injection speed is set at high where there are flow marks, record marks and sink marks, on the other hand low injection rate is good to prevent jetting, blush, burn marks kepitaal gate smear, generated by high shear force against cavity wall. Physical and mechanical properties Thermal properties Tribological properties Electrical properties Resistance to fuels and chemicals Resistance to light and weather. Questions or comments about MatWeb?

In this case, some treatments should be performed to prevent unnecessary problems.

Sales of plastic raw materials POM/South Korea engineering plastics/Kepital F20-03 BBK

Figure shows the results of the spiral flow test in which the flow properties of standard unfilled grades were evaluated. More importantly cycle time is closely related to part thickness. The impact strength is the energy to withstand a dynamic impact rather than static stress.

The SAE Society of Automotive Engineers standards prescribe that different conditions which reflect the outdoor environment be applied to the accelerated weathering test depending upon the kepitsl or exterior application.

If long-period interruption is expected, stop feeding granule and entirely eject out material from the cylinder and then lower cylinder and nozzle temperatures. However, to increase the efficiency of the dispersion of a color masterbatch color concentrates or pigment, higher mixing by increasing back pressure may be required. To see MatWeb’s complete data sheet for this material including material property data, metal compositions, material suppliers, etcplease click the button below.

In terms of frictional behavior, if pressure and speed gradually increase, at a certain point kepitwl material cannot withstand any further and start to molten. kepita

In general, there are methods for evaluating the fatigue characteristic of plastics 1 Load control method Load control 2 Strain control method Strain control 3 Strain control between grips method Position control. Therefore, supposedly a hold pressure time is set appropriately, only screw retraction time needs to be taken into account. M-Base keptal points out that any decision about the application of materials must be double checked with the producer of this material. Heat ageing The heat resistance of a plastic may be obtained from measurement of melting point, heat deflection temperature and linear f220-03 coefficient.


In general the friction force causes a surface temperature increases at high velocity and a squeak noise 2f0-03 a certain pressure. For light resistance and weather resistance of plastics, changes in colorfastness, surface gloss or mechanical properties are measured after exposure to outdoor or accelerated weathering.

At the temperature of a melting point or higher, the plastic becomes molten and starts to flow to be processed. Low injection speed Low holding pressure Low melt iepital mold temperature.

Increase injection speed Change the gate location or enlarge gate size Increase mold temperature. Moreover, with recent development in electrical applications, keputal on static dissipative or conductive materials are expanding since the combination of mechanical property and electrical property of KEPITAL is attractive to the electrical markets.

Subscribe to Premium Services Searches: By setting optimum hold pressure, molded parts product with consistent dimensions can be produced. Additional information about this material, like producer contact address, etc. The melting point ISO is useful information to set up processing temperatures and also determine the temperature at which it exists in a solid state. A back pressure of bar is generally appropriate. Please read our License Agreement regarding materials data and our Privacy Policy.

Kepiital shows stress-strain curves of tensile tests at various temperatures, and Figure shows dependence of the tensile strength on temperatures. Hardness of a plastic material is usually indicated in terms of Rockwell Hardness that measures surface pen-etration with a steel ball under specific conditions. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units.