Water Injection Technique (WIT)

Water injection technique is a variant of fluid injection developed at the Institute of Plastics Processing (IKV), Aachen, Germany, in which water is used for production of hollow components.

This technique is particularly useful when rod-shaped components with larger diameters are to be produced. Due to the better cooling effect of water compared to gas, the cooling time and thus the cycle time can be significantly reduced when producing components with larger diameters. Furthermore, energetic savings can be realized, because less cooling by the tool is required. AKRO-PLASTIC has developed special materials for this supreme discipline of injection molding. We designate the materials with the abbreviation "WIT", if special attention is paid to the formation of particularly good surfaces inside. For example, the company Teklas produces components from our AKROMID® A3 GM 20/10 4 WIT black (4529), which are used in the engine cooling circuit of various automobiles.

Image dimensions not found

Change image or reupload it

The advantages of this material lie in the very easy processability of our AKROMID®, which has been specially optimized for the internal water pressure process. The material is used both in the mass-back-pressure process and in the side-cavity process and, compared to the competition, is able to form wall thicknesses that are up to 10 % thinner. It thus not only saves weight and CO2-emissions, but ultimately also our customers' money due to the reduced volume. Of course, our AKROMID® is able to meet the requirements of the most demanding OEMs in terms of cooling water resistance and dynamic strength. Please contact us if you have specific questions about this.

Have a look at all of our WIT-types!

Materials used for the clutch pedal shown on the right:
AKROMID® B3 GF 30 1 GIT black (4598)
AKROMID® B3 ICF 15 (5026)

Dachreling-Bauteil Video

Do You Want to Get More Information?

Then contact us now!


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.