Over the past several decades, food packaging has experienced a quantum leap in higher quality and lower price, thanks to plastic injection molding. However, one problem has plagued the production of clear plastic food packaging: clouding. Cloudy, semi-opaque plastic food packaging has been shown to have a direct impact on consumer sales.
Dozens of solutions have been put forward to rectify this problem, with varying success. Recently, a large international plastics company has introduced an energy-saving and crystal-clear clarifying agent for use with their leading plastics. Many observers say the resulting clearer plastics will launch a new generation of super-transparent, high gloss, polypropylene random copolymers (PP) for low temperature processing of thin-wall rigid food packaging and storage. These next generation plastics will offer the food packaging and household storage solutions sector a new benchmark in pure, high clarity.
The clarifying chemical was chosen for its top industry status in the areas of translucence and stiffness.
This new clarifying technology offers the following advantages:
* Superior visual quality, equivalent to glass
*Outstanding organoleptic properties. Utilizing a new phthalate-free catalyst, the new plastics are made without peroxides, which results in the demanding organoleptic properties mandated by the food industry. Both plastics are also low in odor and carbon emissions.
* High fluidity: Complicated designs and narrow walls can be attained during injection molding, courtesy of the high fluidity of the grades. These plastics are ideal for injection molding of different sized rigid containers for food packaging, as well as household articles where superior clarity combined with enhanced stiffness is needed.
*Energy-savings and manufacturing time reduction: the new clarifying chemicals allow the melting temperature of these advanced plastics to be lowered to 170-180C during the injection molding process without any deleterious effects on the completed product. This allows injection molding companies to reduce the conventional melting temperature from 220/230C for considerably lower energy use by the extruder. This new reduced temperature reduces cooling time by at least 10% which results in more products manufactured per hour.
Author: Keith KlamerThis author has published 3 articles so far.