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Hyperform® nucleating agents from Milliken increase PP processability and properties in thermoforming and injection moulding


Milliken’s Hyperform® HPN nucleating agents provide major improvements in performance and processability of polypropylene (PP) grades intended for thermoforming as well as injection molding.

Hyperform HPN additives provide isotropic shrinkage in formed parts. As a result, they can fix critical problems faced by processors involved in housewares, materials handling, high-speed moulding of thin-walled packaging and also technical components. “If you have a problem with shrinkage and warpage, productivity, aesthetics, or stiffness/impact balance, there is a good chance that we can go a long way to solving it with Hyperform HPN,” says Sami T.K. Palanisami, Market Manager Plastic Additives EMEA.
Palanisami cites Hyperform HPN-600ei, intended for incorporation into clear thermoformable sheet extrusion grades of polypropylene that can be deep-drawn into cups typically used in bars for serving cold drinks. HPN-600ei nucleated polypropylene presents a cost effective alternative to PET and polystyrene (PS). Cups are highly transparent and have an excellent visual appearance, rather than the yellowish appearance that results from the use of some other conventional nucleating agents. Meat trays and yoghurt cups are other important applications, especially in Europe.
The nucleating agent increases the achievable output rates on thermoforming equipment to levels normally only achievable with other plastics, says Palanisami. The PP parts can be made with the same wall thickness as other materials. So because the material is less dense, processors use less material, gaining further cost savings.

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