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HomePackagingOptimized Hot Runner Systems for PCR Compounds

Optimized Hot Runner Systems for PCR Compounds

Optimized Hot Runner Systems for PCR Compounds

Oerlikon HRS Flow has developed special hot runner solutions for PCR compounds. Their application possibilities are demonstrated by two examples realized in practice – a fruit crate and a garbage can for composting organic household waste. With these environmentally friendly projects, which were implemented together with various partners, the company underlines its commitment to the circular economy.

For the production of the fruit crates, Mundimold processes an optimized PE compound from APS, Valencia/Spain, which is obtained from the recycling of Tetra Pak card-board packaging. In the production of this demanding part, which was demonstrated at K 2022 on a servo-hydraulic Haitian Jupiter with two-platen technology and 4,500 kN clamping force, a servo-controlled Flex Flow valve gate hot runner system with four drops contributes to the high repeatability of the process. Optimum gate quality is ensured by the new, patent pending TTC cooling bushing from Oerlikon HRS Flow, which prevents needle sticking even with short cycle times. The low energy consumption of the Flex Flow system supports energy-efficient production. Project partners were Haitian, Mundimold, Tetra Pak, APS and Oerlikon HRS Flow. The production process is explained clearly in this video: Eco-friendly Fruit Box: Maximum Precision Combined with Sustainability.

Another example is the Bokashi Organko Essential, an airtight sealable bucket for home composting. The 775 g part with 2.5 mm wall thickness is produced of PCR polymers using an Oerlikon HRS Flow two-drops hot runner system. This is optimized for frequent color changes and designed so that remaining decontaminations in the recyclate do not cause damage, streaks or flow marks that could affect the aesthetic and functional result (courtesy of Plastika Skaza).



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