SDS

Novamont SpA • Via Fauser, 8 I-28100 Novara • Phone:[phone] • Fax:[phone] • www.novamont.com
DISCLAIMER
The information and data contained herein is believed to be accurate and is given in good faith. However, accuracy is not guaranteed for the product
referred to herein and Novamont SpA disclaims all liability accordingly, whether in contract, tort or otherwise December 2012. Ver.1.0
1
TECHNICAL DATA-SHEET
Mater-Bi EF02U
EF02UEF02U
EF02U
AVERAGE PHYSICAL & MECHANICAL PROPERTIES
PROPERTY UNIT TEST AVERAGE NOTES
Melting Temperature
°C DSC 118 raw pellets
Melt Flow Rate g/10min DIN ISO 1133 3 at T=160°C, W=5kg
Density g/cm
3
Pychnometer 1,29 raw pellets, T=23°C
Tensile Strength at Break MPa ASTM-D882 30
blown film samples 15 µm MD
Elongation at Break % ASTM-D882 480
blown film samples 15 µm MD
Young Modulus MPa ASTM-D882 200
blown film samples 15 µm MD
Tear Resistance N/mm ASTM D1922 100 MD
>> >> 200 TD
Water Vapor Permeability
gx30µm/(m
2
x24h)
ASTM-E96 720
38°C 90%∆RH 16 µm
Friction Coefficient dimensionless DIN 53 375 A
film/film
0.3
0.2
Static – in progress
Dynamic – in progress
APPLICATIONS
Mater-bi EF02U is a biodegradable thermoplastic material used for film blowing. Applications include film articles, such
as bags.
TYPICAL EQUIPMENT & EXTRUSION CONDITIONS
1. EXTRUDER: Preferably with L/D ratio=27÷30, equipped with grooved barrel section.
2. SCREW: Screws for LDPE are generally suitable for Mater-Bi, e.g. barrier screws. Screw for LLDPE or HDPE may
be in some plants suitable as well.
3. THERMAL PROCESSING PARAMETERS: Hopper: water cooled; Grooved feeding section= 90÷130°C, Barrel
zones = 135÷145°C, Filter = 140÷150°C, Die head = 135÷145°C.
4. DIE HEAD: Die Gap=1.0÷1.2mm; avoid sharp deceleration or stagnant melt zones along flow channels.
5. BLOW UP RATIO OF BUBBLE (BUR): Suggested: >3,2.
6. DRAW DOWN RATIO OF BUBBLE (DDR): Blown film produced by different extrusion lines may exhibit some
differences in properties. Before starting an industrial production, properties of blown film, along machine direction
and transverse direction, should be carefully evaluated in order to identify the best draw down ratio.
7. BUBBLE COOLING: Single type cooling ring or with Internal Bubble Cooling (IBC) system. Chilled cooling air
is suggested, T≤18°C.
8. FILTERING: Screen size depends on filtering demand, reps screen (e.g. type 16/88 – french numbering) are
generally enough. Pay attention to the high pressure gradient that can built-up in the filtering section.
GENERAL SUGGESTIONS
• RAW MATERIAL:
Mater-Bi EF02U is air moisture sensitive and tends to absorb (or lose) water vapor when
exposed for long time to humid (or dry) environments. Mater-Bi EF02U as shipped into Novamont packaging, is ready
to use and does not need pre-drying. In order to preserve the original moisture content, it is highly recommended to
open the original packaging just before startup of processing and to reseal it again after use.
• EXTRUDER START-UP AND SHUT-DOWN: Purge barrel with LDPE (MFI=2÷4g/10min) at the start-up and at
the end of production. Please refer to MSDS with regard to correct handling of molten material and safe processing.
• SCRAPS PROCESSING: Scraps, if not continuously reused in-line, must be stored sealed into barrier containers, e.g.
LDPE bags, in order to preserve original moisture. Mixing together scraps of different Mater-Bi grades is not
recommended.