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FILM ADDITIVES | MATERIALS


Additive approach to films


Additives hold the key to improving the performance of films for many applications.Peter Mapleston looks at some of the latest additive and masterbatch introductions


Today’s film products are highly engineered struc- tures designed to meet exacting standards. Addi- tives are critical in achieving the levels of perfor- mance required for effective production, processing and in-service performance and the latest introduc- tions address a wide range of issues, ranging from slip and static management, through to fogging and optics and even anti-counterfeiting. This article explores some of the latest developments. Dow Performance Silicones, now a business


unit of DowDuPont’s Specialty Products division, recently introduced Dow Corning MB25-235 Masterbatch, a new silicone-based technology that it says significantly reduces the coefficient of friction (CoF) of low density polyethylene (LDPE) packaging and agricultural films. The supplier says the new masterbatch addresses the traditional drawbacks of organic additives, “delivering stable, long-lasting slip performance and avoiding migration to the film surface.” It is approved for


www.compoundingworld.com


food contact in the European Union, US, and China and is well suited for use on high-speed form-fill- seal (FFS) equipment. The new masterbatch is the latest in a growing


range of silicone-based masterbatches for flexible packaging and complements the Dow Corning HMB-6301 Masterbatch for reducing CoF in bi-axially oriented polypropylene (BOPP) film, which was introduced in 2017. According to Christophe Paulo, Industrial and


Consumer strategic marketer, EMEA, Dow Perfor- mance Silicones, the Dow Corning MB25-235 Masterbatch “far surpasses traditional organic additives by delivering a consistently low, stable CoF that is unaffected by time duration or tempera- ture.” He says it maintains critical mechanical properties such as tensile and tear strength. Zero migration between film layers or between the film and package contents helps to prevent impact on downstream operations, such as printing and


January 2019 | COMPOUNDING WORLD 23


Main image: The agricultural sector is seeking


performance films devel- oped to offer extended lifetimes and improved yield


PHOTO: SHUTTERSTOCK


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