Have you ever thought about how much plastic products are integrated into your everyday life? If you stop to think about it, chances are you touch something made from plastic every day. For decades plastic materials have helped provide us with products that help us live a clean, healthy and efficient lifestyle and are used in a vast range of products from plastic bottles, cups and plates, to composite furniture and building products, and even in automotive components.
Calcium carbonate (CaCO3) and talc are two widely used mineral fillers in the plastics industry, and their use in rigid packaging has increased significantly over the years. Once thought of simply as resin extenders, the addition of these mineral fillers to materials such as polypropylene, has been shown to contribute to increased performance, improved processing, and improved sustainability of the finished part - properties which can be further influence by loading level.
But if you're new to the world of mineral fillers, or considering using them in an application for the first time, you might be asking yourself, how do I determine the proper loading level for my application? To shed some light on the subject our friends at Heritage Plastics have contributed the following guest post discussing methods to help determine the optimum loading level for thermoforming applications:
In a previous blog post, we discussed five key reasons why calcium carbonate filled polypropylene sheet is great for thermoforming applications. Among those reasons, was the sustainability benefits associated with using a filled PP product compared to a resin-only formulation. But evaluating the sustainability of a particular material is not complete until it is compared to alternatives available in the market. To provide a full-circle sustainability evaluation, a study conducted in 2016 by Franklin Associates for Heritage Plastics evaluates the environmental impact of a thermoformed CaCO3 filled PP cup compared to a popular alternative – the polycoated paper cup. Continue reading to learn more about the findings of this study:
Calcium Carbonate (CaCO3) is one of the most widely used mineral fillers in the plastics industry, and its use in rigid packaging has increased significantly over the years. Once thought of simply as a resin extender, the addition of calcium carbonate in plastics has been shown to contribute to increased performance, improved processing, and improved sustainability of the finished part.
Check out five great reasons why you should consider using calcium carbonate filled polypropylene sheet for your next project:
Working with polypropylene sheet for the first time often presents new challenges for thermoformers including shrinkage, low rigidity, and low stiffness. The addition talc or calcium carbonate mineral fillers can help remedy these problems while contributing added benefits compared to resin-only formulations. But while talc and calcium carbonate both offer benefits, we often find our customers asking, “what’s the difference?”