PIT

PROJECTILE INJECTION TECHNIQUE

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Projectile Injection Technique

Projectile injection (PIT) was developed because physical properties dictate that the residual wall thickness of components increases as the diameter increases.

AKROMID® A3 GM 20/10 4 WIT black (4529) is also suitable for production of pipes with diameters greater than 30mm. Projectile injection (PIT) was developed because physical properties dictate that the residual wall thickness of components increases as the diameter increases (rule of thumb: the residual wall thickness of the pipe is 1/5 – 1/10 of the outside diameter). With this technique the component is partially or completely filled.

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Afterwards the projectile (out of plastic or metal), which is located right above the gas/water injector, pushes the melt back in the injection point´s direction and creates the hollow body. PIT is a suitable method particularly when the geometry, especially that of the cross section shape, is similar across the component. Slight changes in cross section can be handled using variable projectiles, but larger ones cannot. The advantage of PIT is that the thinnest residual wall thicknesses can be achieved with this method variant.

Fluid pipes manufactured using the projectile injection technique, Institute for Plastics Processing at RWTH Aachen; WIT installation: PME Fluidtec GmbH.

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Please note that some of the methods mentioned here are patented in certain countries. Please address any queries regarding this to the plant manufacturers, who will be able to tell you which patents are covered with the purchase of the plant technology.

Disclaimer: All specifications and information given on this website are based on our current knowledge and experience. A legally binding promise of certain characteristics or suitability for a concrete individual case cannot be derived from this information. The information supplied here is not intended to release processors and users from the responsibility of carrying out their own tests and inspections in each concrete individual case. AKRO®, AKROMID®, AKROLEN®, AKROLOY®, AKROTEK®, ICX®, PRECITE® and DIA(hr)LOG® are registered trademarks of AKRO-PLASTIC GmbH.