processing | Purging compounds
recycled materials and this part of the industry is informing development of purging compounds. “The PVC processing industry in all its forms – extrusion, injection and blow moulding – currently has a very large appetite for new product development and innovation,” he says. “There is a good market for advanced technol- ogy, which includes enhanced cleaning systems for whole production systems, such as extruder and injection moulding screws and barrels. PVC processors typically use our purging systems to reduce production downtime, produce less scrap and effect more efficient colour changes – all of which impact the bottom line and save money.” New technical and market needs drive demand for
Above:
UK-based Dugdale makes a range of PVC purging compounds
PMMA, POM, PET, PBT and PA. The compound is stable at temperatures up to 320°C and is safe and effective for use in screw and barrel assemblies, hot runners and gates. Chem-Trend adds that it is also extremely easy to remove from metal surfaces.
PVC purging Requirements for PVC purging compounds reflect the general needs of the PVC compounding industry, according to Andy Tombs, PVC Business Development Manager at UK-based Dugdale. “Undoubtedly legisla- tion is a key and primary driver,” he says. “All innovation must operate within the letter of the law, with REACH compliant grades for both rigid and flexible PVC compounds. Secondly, product performance is a leading factor, providing performance that exceeds that of the previously lead stabilised materials. Thirdly, environ- mental and recycling factors continue to play a significant part in the development of the PVC industry.” As a PVC compounder, Tombs says Dugdale is active in handling both post-industrial and post-consumer
custom PVC compounds and this in turn raises new opportunities for developing PVC purging compounds. Tombs says the company creates in excess of 50 new PVC compounds each month and this number includes PVC purging products, which he says is an area the company intends to invest further in. Dugdale has also developed a non-PVC thermoplas-
tic purging compound for the general plastics process- ing sector – DucaPurge. “The DucaPurge compound is designed for immediate use without the need for soaking,” says Tombs. “It therefore cuts clean downtime to an absolute minimum. Successfully tested by moulding and extrusion processors throughout the UK and overseas, the compound is intended to minimise scrap, reduce downtime and stoppages for cleaning or maintenance.”
Click on the links for more information: ❙
www.asaclean.com ❙
www.polytechs.fr ❙
www.rapidpurge.com ❙
www.dynapurge.com ❙
www.slideproducts.com ❙
www.chemtrend.com ❙
www.dugdalepvc.com
EXTRUSION
PURGING COMPOUNDS for injection and extrusion
EXTRUSION
Polytechs s.a.s. BP 14 - Z.I. de la Gare 76450 CANY-BARVILLE - FRANCE Phone : +33 (0) 2 35 57 81 81 Fax : +33 (0) 2 35 57 81 92
The best way to maintain your extrusion or injection molding machines is with Clean X purging compounds.
INJECTION Please contact us directly!
E-mail :
commercial@polytechs.fr Web site :
www.polytechs.fr
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