Knit Lines in Injection Molding Quotes FAQs / /
Q: Does Fathom offer Injection Molding machining?
A: Yes, Fathom offers injection molding machining.
Q: What is Injection Molding?
A: Injection molding is a manufacturing process commonly used to make a high volume of uniform parts. Injection molding makes a part by injecting molten plastic into a custom mold. Once the part has been formed, it is released. Injection molding is a fully automated process. As the mold can be used repeatedly, injection molding can copy the same part thousands of times.
Q: Is Fathom ISO certified?
A: Yes, Fathom is ISO certified.
Q: Is Fathom ITAR certified?
A: Yes, Fathom is ITAR certified.
Q: Is Fathom AS9100:2016 certified?
A: Fathom is AS9100:2016 certified.
Q: Is Fathom NIST 800-171 certified?
A: Yes, Fathom is NIST 800-171 certified.
Q: How do you get rid of knitting lines?
A: Knitting lines can be prevented by selecting the right material, paying careful attention to the design, using higher temperatures, and monitoring injection speed and pressure.
Q: What is the difference between knit lines and flow lines?
A: Flow lines on the surface of a part appear in a wavy or ring-shaped pattern. Flow lines appear when thinner areas of a part cool faster than thicker areas or when molten resin flows past areas of a part that have already cooled. Knit lines appear on the surface of the part as a straight line. Like a flow line, knit lines occur when two resins meet at different temperatures.
Q: Difference between knit lines and blush in injection molding?
A: Blush appears as discoloration around the gate but may be found in other areas of the part. Blush may be caused by a high injection speed, low injection pressure, wrong temperature, or improperly sized gates. Blush lines have a cloud-like shape, whereas knit lines are lines.
Q: How can you reduce my flow marks?
A: Flow marks can be reduced by adjusting the injection speed or pressure, raising the resin’s temperature, relocating gates, increasing the diameter of the nozzle, and selecting the best material for your unique project.