PROCESSING | WINDOW PROFILES


Fixing broken windows in Ukraine


UK-based researchers have devel- oped a temporary solution for windows that have been destroyed by the war in Ukraine – and is distributing it across the country. The charity, called Insulate


Ukraine, says that up to 10 million windows have been blown out during the war. High energy prices and cold winter temperatures make this an urgent problem, they say – as win- dows are a key component of good building insulation. The solution insulates in the same


way as double glazing, lets light through, costs around US$15 per window, and can be assembled at home – using basic materials – in around 15 minutes, says the charity. The window relies on one-inch diameter PVC pipe to build a frame. Then, a single sheet of polyethylene is wrapped around this – and secured in place by an ‘insulation noodle’ that is attached to the frame. The outer frame is then wrapped using more polyethylene. This results in a window made of triple-glazed PE sheet.


cleaner solution for profile extruders producing their own compounds – and also shortens cleaning times. In addition, it is offering new colour master-


batches for recycled PVC in black, white and brown. These all have high concentrations of pigments and are formulated to deliver good dispersion. The white masterbatch has a high content of titanium dioxide and other ingredients to help restore the appearance of recycled white PVC that has yellowed over its lifetime.


Recycling rates Battenfeld-Cincinnati says that its aglomEx counter-rotating parallel twin screw extruders can be used in PVC window recycling. The processing units are based on its twinEx


models, which are already well established in the market – and also provide processing units of up to 34D. It has a processing length of 34D instead of 28, and the aglomEX with EMS is 28 D instead of 22. Due to their 6 D longer processing unit, aglomEX extruders offer around 20% higher output than the previous PVC models.


Battenfeld-Cincinnati’s aglomEx twin screw extruders can be used in PVC window recycling


“In case you wish to protect against


rain and other elements you can strap a sacrificial sheet to the outside of the window,” said the charity. The charity has so far fitted around 300 windows in Izyum in eastern Ukraine. It has three objectives here: perfect the implementation of its design; gather evidence on how well the design works; and teach NGOs and locals how to build the windows. “Part one is complete, part two is


nearing completion and our focus is turning to part three,” it said.


The machines were shown at K2022 last year for the first time. The series includes two variants – with or without electrically driven shear gap adjustment (EMS) – and several machine sizes. With their sizes 93, 114 and 135, conventional aglomEx models achieve output rates of up to 1,500 kg/h. They can handle both dry blend processing and recycling of PCR materials. The shear gap adjustment system powered by an electric motor is suitable for processing the entire portfolio of PVC formulations from soft to hard. The extruders’ special design shapes a shear gap between screw and barrel. This gap can be altered by adjusting the relative position of the barrel to the movable screw to set the requested shear rate. EMS ensures optimal plasticising for a variety of dry blends and PVC formulations while using the same pair of screws. The advantage for the operator is that time-consuming and costly changeover work is no longer required and the EMS can be steplessly adjusted to varying material grades during production. The aglomEx models with EMS are available in two sizes – 114 and 135 mm – for outputs up to 2,000 kg/h.


CLICK ON THE LINKS FOR MORE INFORMATION: � www.kommerling.nl � www.inovyn.com � www.rehau.com � www.gealan.de � www.veka.com � www.andersenwindows.com � www.ineos-styrolution.com � www.deltatecnic.com � www.battenfeld-cincinnati.com � www.insulate-ukraine.org


16 PIPE & PROFILE EXTRUSION | September 2023 www.pipeandprofile.com


IMAGE: BATTENFELD-CINCINNATI


Page 1  |  Page 2  |  Page 3  |  Page 4  |  Page 5  |  Page 6  |  Page 7  |  Page 8  |  Page 9  |  Page 10  |  Page 11  |  Page 12  |  Page 13  |  Page 14  |  Page 15  |  Page 16  |  Page 17  |  Page 18  |  Page 19  |  Page 20  |  Page 21  |  Page 22  |  Page 23  |  Page 24  |  Page 25  |  Page 26  |  Page 27  |  Page 28  |  Page 29  |  Page 30  |  Page 31  |  Page 32  |  Page 33  |  Page 34  |  Page 35  |  Page 36  |  Page 37  |  Page 38  |  Page 39  |  Page 40  |  Page 41  |  Page 42  |  Page 43  |  Page 44  |  Page 45  |  Page 46