products | Applications FURNITURE Interstuhl finds its perfect surface
German office furniture maker Interstuhl is using BASF’s Ultramid SI polyamide – the SI stands for Surface Improved – to manufacture the sleek seat back frame moulding for its MOVYis3 office chair. Interstuhl’s requirements in
this application are demanding; it wanted a polymer that could be easily processed using gas-assisted moulding, provided high mechanical strength, and delivered a high quality cosmetic finish direct from the mould. Analysis of the seat back design using BASF’s Ultrasim software resulted in the selection of the Ultramid B3EG4 SI grade. This 20% glass reinforced grade uses a special additive pack that results in very high quality aesthetic finish with
AUTOMOTIVE
Hyundai updates air duct design
Korean car maker Hyundai selected Santoprene TPV from ExxonMobil for production of the short, injection moulded air ducts for use on its latest MD, RB and UB vehicle platforms. The company was looking
for a material that would match or exceed the performance of traditional duct materials - such as EPDM – while also enabling it to reduce weight. Santo- prene delivers a typical 20-30% weight saving. ❙
www.exxonmobilchemical.com
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no need for painting or post-mould treatments. Interstuhl produces the seat
back frames using gas-assisted injection moulding in black or white, with colour provided by the customer’s choice of fabric. However, Ultramid SI resins can also be masterbatch-coloured (BASF’s Color Solutions unit can develop special systems that optimise coloration and UV resistance). B3EG4 SI is one of a range of
four Ultramid SI grades that also includes the 30% glass reinforced B3EG6 SI and 50% glass B3EG10 SI grades, as well as the B3U40G4 SI flame retardant grade for use in seating for public places such as airports and railway stations. The standard fire resistance tests for chairs for public places
INDUSTRIAL Apec from BMS protects firefighters
Polish protective equipment specialist KZPT is using the transparent, heat-resistant Apec FR 1892 polycarbonate from Bayer MaterialScience (BMS) for production of high performance visors for its firefighters’ helmets. The injection moulded visors
are supplied to firefighters across central and eastern Europe and the Middle East. They include standard single-piece designs and double-layer solutions such as that fitted to the premium Calisia Vulcan helmet, which features a metallised outer visor shield to reflect thermal energy and protect
INJECTION WORLD | June 2013
the firefighter from the heat. “We investigated the
suitability of a whole series of plastics for this application,” says Wlodzimierz Chlebowski,
technical director at KZPT. “Only the product from Bayer MaterialScience offers the high level of fire protection and flame retardance required by international standards together with the necessary mechanical strength.” Flame retarded Apec FR 1892 satisfies the EN 443:2008 standard, which specifies particularly stringent requirements for the protective function of fire helmets. Production of the KZPT
range of firefighters’ helmets can be seen in this video
http://bit.ly/13hefWl ❙
www.bayermaterialscience.com
www.injectionworld.com
include setting fire to a paper cushion placed on the seat of the chair and igniting a ‘Crib 5’ test specimen of 20 standard- ised stacked wooden sticks soaked with 1.5 cm3
of
propanol. Either test is considered to have been successfully passed if open flames have extinguished within 10 minutes and all glowing or
smoke within 60 minutes. Seat shells made of the
flame-retardant, Ultramid B3U40G4 SI perform very well in these tests, says BASF. Because the flame retardant system contains no red phosphorous, it does not cause problems for production of light coloured grades. ❙
www.basf.com
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