Czech refinery, petrochemical and agrochemical raw materials producer Unipetrol has announced the launch of a new low-melt flow rate HPP-grade incorporating Milliken's Hyperform HPN-600ei, for its packaging sector customers.
The new Mosten FT005 grade, which is the result of co-operation between Unipetrol, its R&D centre Polymer Institute Brno (PIB) and Milliken, is expected to increase the processing performance of thermoformed rigid packaging, such as beverage cups, yoghurt pots and trays.
According to the company, the bimodal polypropylene homopolymer (hPP) resin brings improved transparency and a glossy surface to end-products, and its well-balanced processing properties ease parts production for converters.
PIB provided technical support to Unipetrol throughout the development process, following initial discussion and research of market requirements.
The support included preparation of laboratory samples and investigation of basic processing and mechanical properties.
Milliken, which supplied its new additive, also helped the company with resin evaluation during initial production of thermoformed parts.
Hyperform HPN-600ei nucleation technology improves the crystallisation process by enhancing transparency in polypropylene.
The technology is also said to create a new look that is noticeable in both single as well as stacked parts produced with the grade.
The increased crystallisation speed induced by HPN-600ei, together with the bimodal nature of the Unipetrol PP, creates the potential to reduce cycle time and raise productivity, while cutting down costs.
An antistatic agent incorporated into the resin along with the Milliken additive eases the demoulding of finished parts.
Image: The new Mosten FT005 grade will increase the processing performance of thermoformed rigid packaging. Photo: Milliken & Company.