Mowiflex™ C 30

1 of 8 products in this brand
Mowiflex™ C 30 is Kuraray’s polyvinyl alcohol-based polymer compound for thermoplastic processing. MOWIFLEX™ is a nontoxic, biodegradable, water-soluble resin that forms clear, glossy films. It has high tensile strength and can be processed using conventional thermoplastic technologies (injection molding, 3D printing, etc.). It was designed to fit the requirements for Rapid Prototyping and is a versatile component. Moreover, MOWIFLEX™ can be colored, allowing processing as a highly concentrated masterbatch.

Melt Flow Index: 20.0 - 40.0 g/10 min

Technical Data Sheet

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Identification & Functionality

Plastics & Elastomers Functions
Technologies

Applications & Uses

Processing Notes

Mowiflex C 30 compounds were designed for the application in food casings. It should be processed between 190 and 200°C. The material absorbs moisture once the packaging is opened and should therefore be processed only from unopened original containers. Otherwise bubbles may occur in the product. Damp material can be dried at 60°C – 80°C for 6 – 8 hours in a circulating-air dryer. Dry content can be determined shortly before extrusion, e.g. using a Sartorius Moisture Analyzer MA 100. Melt temperature during extrusion should not exceed 220°C because at higher temperatures the material suffers thermal damage, recognizable by yellow discoloration and an increase in melt pressure and torque. Residence time should be held as short as possible, 5 – 10 minutes at most.

Cleaning the extruder

Following extrusion of polyvinyl alcohol, the extruder must be cleaned with a polyolefin of similar melt viscosity. It is advisable to dismantle and clean the extruder at the same time. Alternatively, the extruder can be purged with polyolefin for a sufficient period of time. Depending on the design of the extruder, however, this can leave polyvinyl alcohol residues in the barrel and/or die, which can then crosslink or degrade under the influence of heat.

Properties

Physical Form
Soluble in
Cold Water
Typical Properties
ValueUnitsTest Method / Conditions
Melting Area180 - 210-
Bulk Density0.6 - 0.9g/cm3
Glass Transition Temperature35°C
Melt Flow Index - MFI (190°C/21.6 kg)20 - 40g/10 min
Methanol Contentmax. 1wt %
Volatiles Content1 (0.2)wt %

Technical Details & Test Data

Viscosity Curve

Kuraray Mowiflex C 30 Viscosity Curve

Storage & Handling

Safety and Handling

Mowiflex is not a dangerous substance or preparation as defined by German chemical law or dangerous goods regulations or EC Directives 67/548/EC and 1999/45/EC in their current versions.

Mowiflex C 30 remains stable for at least 12 months in its original container provided if it is stored correctly, i.e. indoors in a dry environment and at room temperature.