News about the bioplastics industry

Sustainability gets clear – new transparent and flexible biopolymer for blown film extrusion

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FKuR  has launched a new transparent,  flexible biopolymer. Called  Bio-Flex® F 2201 CL. This material contains a high content of renewable resources and, in line with the other resins in the Bio-Flex® family, can be processed easily on standard LDPE blown film lines and converting equipment.

With a renewable resource content of approximately 60 % this grade is a consistent
further development of  the Bio-Flex® family. Its mechanical properties  exhibit  a high
elongation and flexibility along with good puncture resistance. Consequently Bio-Flex® F 2201 CL can ideally be used to adjust the properties of all the available Bio-Flex® family resins. However, due to its limited sealing strength, Bio-Flex® F 2201 CL should always be used as a mid-layer in a co-extruded structure. As a result of its mechanical properties it is the perfect partner for Bio-Flex® A 4100 CL in a transparent 3-layer combination. BioFlex® A 4100 CL is a clear but stiff material with properties comparable to PP.

The combination of these two transparent grades  offers superb and unmatched clarity for a biodegradable blown film available today while maintaining a very high content of renewable resource material. This is  between 60  - 80% depending on the variation of  polymers of the final structure. As both polymers are clear, the  transparency of a 20µm film, for example, is close to 91% (light transmission figure). The toughness and high tear  resistance are the result of the core Bio-Flex® F 2201 CL layer and the renewable content  of a 20 micron 3-layer structure with a layer ratio of 20 / 60 / 20 (%) is around 70%.  Using  such a structure, this film is ideal for VFFS applications.

FKuR Kunststoff GmbH will be presenting this application and other innovative products at Interpack Düsseldorf, booth F 14 hall 9 from May 12th – 18th.
Bioplastics are a unique  class of material which  are  based on renewable resources or  which enable the biodegradability of products made from these polymers.
FKuR Kunststoff GmbH, Willich, Germany is a leading producer of biopolymer
resins/blends for flexible packaging (Bio-Flex®) and rigid applications  (Biograde®). The  cooperation with the Fraunhofer Institute UMSICHT, Oberhausen, Germany, guarantees  our innovation, know-how and quality


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