MATERIALS | SHEET
Right: Simona twin-wall sheets were used to make two rainwater storage tanks in a renovation project
use lengthways-ribbed Simona PE 100 black twin-wall sheets. The high rigidity of the sheets – which have a thickness of 54mm – was enhanced by internal steel sections. The sheets met the necessary pressure- and temperature resistance, as well as weld seam strength and tightness in compliance with DVS. In addition, it is easy to clean, corrosion-free, durable and recyclable. The two tanks were fabricated in the workshop and checked for leak tightness in a 24-hour test before being delivered to the site. There, the tanks were hoisted into the basement room of the locomotive shed by crane before all the necessary joints and connections were made to the overall system.
In a separate project, a similar product – in this
case, cross-ribbed Simona PE 100 black twin-wall sheet – was used in the construction of a cooling water tank. It was part of a ‘zero energy’ campus project in Ingolstadt, Germany. The cross-ribbed internal structure gives a high
level of direction-independent rigidity, despite a wall thickness of only 40mm. Extra reinforcement, with a bolted steel frame, adds to the sturdiness. The sheets have good thermal insulation proper- ties and, compared with solid material, are lighter – making delivery of the prefabricated components more efficient.
Renewable packaging US-based Pacur, a custom extruder of sheet for medical applications, has started using Eastar Renew 6763 co-polyester from Eastman to make rigid, thermoformed, sterile barrier packaging – which it says will help divert plastic waste away from landfill. “We are committed to developing next-genera- tion sustainability solutions,” said Jason Eckel, senior vice president of sales and marketing at Pacur. “With our custom sheet and rollstock
24 FILM & SHEET EXTRUSION | May 2024
solutions, leveraging Eastar Renew 6763, we are enabling progress toward a circular economy.” Eastman says that the material, produced using ‘molecular recycling’, is indistinguishable from its Eastar 6763 copolyester – having the same durabil- ity, safety and performance characteristics. Using the material enables Pacur to certify that plastic waste is being diverted from landfills to make new packaging. The amount of plastic waste diverted is tracked through an ISCC-certified mass balance accounting approach that allocates recycled content to Eastman Renew materials. In March Eastman opened its ‘molecular
recycling’ facility in Kingsport, Tennessee. The facility has the capacity to recycle around 110,000 tonnes/year of plastics. The company says will help it reach its goal of recycling 225,000 tonnes/year of plastic waste by 2030.
Medical recyclate Separately, Pacur has teamed up with SK Chemi- cals, to address the increasing demand for recy- cled plastics in the medical device industry. At the recent MD&M West show, Pacur exhibited
products incorporating SK materials. Future collaborations include the development of prod- ucts based on recycled materials, such as SK’s Skypet CR BL (which contains 98.5% recycled content), and Ecotria. Jason Eckel, senior vice president of sales and
marketing at Pacur, said: “This represents an opportunity to diversify our portfolio of sustainable solutions for medical device packaging, by leveraging the supply of SK’s recycled materials.” Kim Eung-soo, head of green materials at SK Chemicals, added: “This collaboration will serve as a milestone in enhancing sustainability in medical packaging. We will exert more efforts to expand the supply of recycled materials in the medical packaging sector in the future.”
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IMAGE: SIMONA
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