100% product usage|Plastic news

Unreinforced PP was included granulate type and the product mix was plasticized. There was no filter in the extrusion location, as this would eliminate the long fibers. Lastly the product was gotten rid of from the mold and dried.

The resulting granules were incinerated to aesthetically assess the glass fiber lengths. It can be seen that adequately long fibers are kept. There were glass fibers longer than 4 mm. The setting of the fiber material can be enhanced when cutting the cladding parts. The smaller sized the pieces, the more equally they are ground and blended with the base product. Recalculated from the density, the recyclate has a fiber weight portion of approx. 35% by weight.

Effective recycling of production waste reveals the capacity for automobile parts at the end of automobile life. After cleaning up the parts and getting rid of any metal inserts that might have been utilized, they can be recycled into regranulate in the very same method.

Injection molding is no various to brand-new products

In the ENGEL technical center, sample parts were produced from the regranulate gotten on an e-victory injection molding maker. The focus of the tests was the procedure habits of the regranulate compared to series product. A long glass fiber enhanced brand-new product, a PP GF40 of type GB477HP from Borealis, was utilized as a recommendation. Both products were plasticized at 3 various screw speeds in order to examine the procedure consistency. An ideal dosing habits can be originated from the practically direct dosing curves without dips.

As an experiment, the regranulate was premixed in a masterbatch mixer in order to mimic the impact of an optional homogenization action – for instance in a silo with an agitator. The weighing of the parts led to somewhat greater basic discrepancies for the regranulate compared to the brand-new product. In outright terms, nevertheless, the basic discrepancies were really little for both products.

Given that the products are well homogenized throughout injection molding, no substantial distinctions in between regranulate and virgin product were to be anticipated when assessing the fiber lengths and percentages, which the tests validated. The extra homogenization in the masterbatch mixer did not enhance the currently excellent worths any even more. In summary, it can be stated that the regranulate can be processed simply as well as virgin product in the injection molding procedure.

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