Milliken New Material Provides Superior Optical Performance for Polypropylene Bottles

Milligan® NX8000, a new generation of transparent Milmilcon, provides excellent optical performance for the extrusion blow molding process of polypropylene bottles. A Polish cosmetics manufacturer is one of the first end users of such high value-added products, making full use of the competitive advantage brought by this product. For relatively low processing volumes, the extrusion blow molding process using Millad NX8000 polypropylene transparency is far more cost effective than PET injection stretch blow molding.

Milliken expects the Millad NX8000 to be more widely used in polypropylene containers manufactured using the extrusion blow molding process in the coming months. “The transparency provided by the Millad NX8000 helps our products stand out from the shelves of many brands,” said Magdalena Koćwin, marketing manager at Bielenda. “We have invested a lot of resources in the development of natural cosmetics, and its packaging should also highlight this information. We hope that the perfect combination of exquisite packaging and quality products will bring a new surprise to consumers who are pursuing special feelings.”

Bielenda, a natural cosmetics company based in Krakow, Poland, has just launched a series of new bath oil products, including Afrodyzjak, Ekstaza and Euroforia. The sales area for such products covers European countries and other continents. In order to fully stimulate and mobilize the senses of consumers, Bielenda expects an ideal product packaging. This packaging needs to meet two conditions: First, it can fully demonstrate the product's color and transparency; Second, it can reflect its commitment to create a high-quality image.

After considering a variety of process technologies and alternative materials such as PVC and PETG plastics, Bielenda eventually adopted an extrusion blow-molding-bottle made of ultra-clear polypropylene material containing Milliken NX8000, Milliken's high-performance clear agent.

The polymer's low density and high mechanical properties help Bielenda maximize consumables: Compared to PVC or PETG bottles, the weight of polypropylene plastic can be reduced by around 20% or 10%. In addition, the polymer is very easy to process (without pre-drying) and does not cause equipment corrosion. Extrusion blow molding is a cost-effective process and allows for greater design freedom.

Although blow molding only accounts for a small portion of polypropylene consumption, polypropylene does play a significant role in the entire plastic packaging market. In the extrusion blow molding market, the use of polypropylene is second only to high-density polyethylene (HDPE)

"Since the 1990s, Millike's Millard 3988 polypropylene transparency has become the industry standard," said Bernard Vermeersch, senior research and development engineer at Milliken. “The Millad NX8000 has taken transparency to a new level and its use in the production of injection moulding and injection blow moulded containers is evident.” Compared to current industry standards, such clearers can reduce haze by 50%. As a result, high-transparency polypropylene has become a reality, even in thick-walled designs.

However, until recently, this advantage was difficult to achieve in extrusion blow-molded containers compared to other packaged products, because the clarity of such containers depends to some extent on the roughness of their wall surfaces. In general, the low pressures and mold surface finishes available for extrusion blow molded containers do not provide the optimal wall surface.

"Today, new resin designs help solve this problem," said Vermeersch. “The new grade with Millad NX8000 can produce extrusion blow molded bottles with optical properties comparable to PVC. The technologist can achieve gloss 120 (measurement angle 60°), 95% clarity, and low haze 6%." Previously, in extrusion blow molded containers made from polypropylene, these values ​​never reached.

About Bielenda Bielenda is a Polish manufacturer of natural cosmetics, currently has more than 400 kinds of cosmetics, mainly including creams, masks, exfoliants, essential oils, slimming products, imitation sun cream, depilatory creams, intimate cleaning products, hair care and styling products. Aromatherapy bath oil. The above products are sold in beauty product retail stores and hypermarkets.

In addition, the company also has its own professional cosmetics brand, Ideal Skin, which is tailor-made for spa resorts, fitness centers and beauty salons.

Bielenda cosmetics are exported to the United States, Canada, Singapore, Germany, Russia, the Czech Republic, Ukraine, Slovakia, Latvia and Hungary. At present, the company is carrying out product promotion in the UK and Kazakhstan.

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