S 28 F

S 28 F

S 28 F is a homopolymer for the production of biaxially oriented polypropylene films.
The product is particularly suitable for metallization, both as monolayer film and in coextruded structures.
S 28 F has been designed to provide a very stable extrusion on stenter lines and to give excellent thickness control, increased drawability and readiness to a two way orientation. S 28 F contains a reinforced processing stabilisation but does not contain any slip or antiblocking agents.
The product features low water carry-over properties and is therefore also suitable for tubular BOPP.
BOPP films produced with S 28 F feature good mechanical properties, high impact strength and puncture resistance, even at low temperatures.
The films form an excellent barrier against moisture, odours, oils, fats and oxidation and feature good optical properties. ‘Monolayer or coextruded films made of S 28 F with a thickness ranging from 20 to 40 um are used for the packaging of foodstuffs, cosmetics and videocassettes. Metallized BOPP films made with S 28 F are also suitable for lamination to other flexible films.


PROPERTIES
METHOD (b) UNIT TYPICAL VALUE (a)
Physical properties
Melt flow rate (230 °C, 2.16 kg)
Density
ISO 1133
ISO 1183
dg / min
g/cm3
2,0
0.9
Mechanical properties
Flexural modulus
Tensile strength yield
Elongation at yield
Izod Impact Strength (notched) at 23°C
Hardness Shore D
ISO 178
ISO R 527
ISO R 527 
ISO 180
ISO 868
N/mm2
N/mm2
%
kJ/m2
points
1450
33
13
6,5
71
Thermal properties
Vicat softening point (9.8 N)
H.D.T. (0.46 Mpa)
Accelerated oven ageing in air
(forced circulation) at 150 °C
ISO 306/A
ISO 75/B
ISO 4577
°C
°C
hours
155
105
360

S 28 F is suitable for food contact.

a) Values shown are averages and are not to be considered as product specification These values may shift slightly as additional data are accumlsted.
b)
ISO test methods are the lates under the societys current procedures. All specimens are prepared by injection moulding.