Smart Molding International 4-2021

molding technologies 33 www.smart-molding.com (uniform thickness for good adhe - sion), a fully encapsulated barrier, di - mensional stability, design freedom and is compatible with IML (In Mold Labelling). In many cases, the existing cold half can be reused. A co-injection hot half only replaces the mono-layer hot half. Light blocking barriers for PET preforms • Mold-Masters currently offers co- injection PET Preform hot halves to in - ject light blocking barriers as the core layer. • Switching from mono-layer to co- injection (with Light Barrier) can ex - tend shelf life, maintain freshness and preserve flavor of UHT Milk and other dairy products. • Co-injection gives brand owners greater design flexibility for differentia - tion on store shelves (enhance brand appeal). Mold-Masters Co-injection PET Preform hot halves: • Dosing of Black Core, as a layer, can be customized to meet the spe - cific requirements of the molded part (dosing 3% to 30% depending on total part weight). • By co-injecting the black layer, there is opportunity to take thickness out of the container and achieve the same light blocking performance with a thinner wall. This translates into an even lower cost package through sig - nificant potential for overall material cost savings. About 80% of the package cost is the raw material. About Mold-Masters Mold-Masters is a leading global sup - plier of hot runners, controllers, auxil - iary injection and co-injection systems. The company designs, manufactures, distributes, sells and services highly engineered and customized plastic pro - cessing equipment that caters to every market. Mold-Masters is credited for patenting the first commercially viable hot runner system in 1965. Today, Mold- Masters conducts business in over 100 countries and employs a diverse work - force that exceeds 2,150 professionals. Mold-Masters Global Headquarters is lo - cated in Georgetown, ON Canada. Mold-Masters www.moldmasters.com PET preform Maintaining complete core barrier coverage around the perimeter of non-symmetrical shapes