Shredding and dewatering – Strong WEIMA duo for post-consumer plastic recycling at Stiphout Plastics

Since 2015, Stiphout Plastics in Montfort, Netherlands, has been recycling post-consumer waste from HDPE and PP. Two WEIMA machines are responsible of different tasks. A S7.20 lift-up shredder shreds the incoming material for efficient further processing. This is complemented by a C.200 Duo drainage press, which dewaters and compresses the plastic waste produced during recycling in the form of fine fractions.

Up to 20,000 tonnes of post-consumer plastics are recycled every year

Eline Stiphout founded the company in 2015 with the aim of recycling post-consumer waste into high-quality flakes, which can then be processed into new products. Since then, Stiphout Plastics has grown steadily and is now a specialist in the post-consumer plastic recycling of Dutch household waste made from polypropylene (PP) and polyethylene (HDPE). Every year, 18,000 to 20,000 tonnes of post-consumer waste are recycled here, which is roughly equivalent to the waste from 500,000 Dutch households.

woman in front of a weima shredder

Eline Stiphout from Stiphout Plastics in front of her shredder

A lot of stacked bales of colorful post-consumer plastic at a recycling plant

Bales of post-consumer plastic at Stiphout Plastics

A lot of colorful post-consumer plastic with blurred foreground

Post-consumer plastic before recycling

Increased productivity by using the WEIMA S7.20 shredder

To recycle these large quantities of post-consumer plastic waste, Stiphout Plastics uses a WEIMA S7.20 lift-up single-shaft shredder from Germany. With a rotor length of 2,000 mm and a 160 kW hydraulic drive from HÄGGLUNDS Bosch Rexroth, Stiphout Plastics was able to double its own output. “With the WEIMA shredder, we were able to increase our capacity from 10,000 tonnes to 18,000-20,000 tonnes per year,” reports founder Eline Stiphout.

orange WEIMA S7.20 single-shaft shredder with conveyor belt at Stiphout Plastics in the Netherlands

WEIMA S7.20 single-shaft shredder at Stiphout Plastics in the Netherlands

A green conveyor belt with shredded colorful post-consumer plastic with an orange shredder in the foreground

Post-consumer plastic after shredding with a WEIMA shredder at Stiphout Plastics

A lot of shredded colorful plastic trash falling from a conveyor belt.

Shredded post-consumer waste

S7.20 lift-up and C.200 in use at Stiphout Plastics

Both applications in video
An orange shredder in an industrial hall with post-consumer waste in the foreground
Post-Consumer Plastic Shredding with a WEIMA S7.20 lift-up Shredder
At Stiphout Plastics, a WEIMA S7.20 lift-up shredder processes post-consumer packaging waste. The output could be doubled with the new shredding system.
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A silver stainless steel drainage press for dewatering plastic fines in an industrial hall
Draining of post-consumer plastic fine parts with a WEIMA C.200 Duo press
At Stiphout Plastics a WEIMA C.200 Duo drainage press drains and compresses plastic fine parts from HDPE and PP recycling.
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The problem: High disposal costs of the production waste

When post-consumer plastic waste is recycled, it is washed several times. This produces plastic fine parts that cannot be further recycled and must be disposed of. These fines contain up to 80% water, which significantly increases disposal costs.
“The cost of waste disposal in the Netherlands is very high. For this reason, we needed a solution to reduce these disposal costs.”

A pile of wet plastic fines in various colors

Wet plastic fines parts from the recycling of post-consumer plastic

The solution: A drainage press from WEIMA

With the WEIMA C.200 Duo drainage press, Stiphout Plastics can significantly reduce the amount of water in the plastic fine parts. The machine dewaters and presses the moist plastic fine parts, reducing both the weight and the volume of the waste. Before dewatering, the water percentage was 70-80% – after dewatering, it sits at 15-30%.

A silver stainless steel drainage press for dewatering plastic fines in an industrial hall

C.200 drainage press for the dewatering of plastic fines at Stiphout Plastics

Dewatered and compressed gray lumps of plastic fines on the discharge pipes of a WEIMA C.200 Duo

Dewatered and compressed plastic fines from a WEIMA C.200 Duo

A pile of dewatered and compressed gray lumps of plastic fine parts

Dewatered and compressed plastic fine parts from the recycling of post-consumer plastic

"With the help of the WEIMA press, we can reduce the cost of the material that is processed with the shredder. This combination of high processing capacity and at the same time minimising waste costs is an extremely effective solution for us."

Eline Stiphout on the interaction between WEIMA's shredder and drainage press

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