V 79 S is a high fluidity polypropylene homopolymer for the production of staple fibres with improved thermo-bonding ability for nonwoven fabrics. The product exhibits excellent antigasfading properties. V 79 S offers an outstanding process stability and spinning behaviour on short-spinning lines and some specific long-spinning lines. The thermal-bonding ability is high and allows the production of nonwoven fabrics with a higher tear strength or with a lower weight per m2 for the same strength. The fabrics made with V79 Sare characterised by softness, textile- like appearance and tear resistance. The typical applications are coverstock for diapers, feminine care products and incontinence pads. Other applications are wipes, filters and fabrics for the clothing and furniture industry.
| Properties | Unit | Typical value | Test Method |
| Physical properties | |||
| Melt flow rate (230'C, 2.16 kg) | Dg/min | 21 | ISO 1133 |
| Density | g/cm3 | 0.9 | ISO 1183 |
| Mechanical properties | |||
| Flexural modulus | N/mm2 | 1550 | ISO 178 |
| Tensile strength yield | N/mm2 | 35 | ISO R527 |
| Elongation at yield | % | 13 | ISO R 527 |
| lzod impact strenghh (notched) at 23 °C | kJ/m2 | 3 | ISO 180 |
| Hardness Shore D | points | 72 | ISO 868) |
| Thermal properties | |||
| Vicat softening point (9.8 N) | oC | 152 | ISO 306/A |
| H.D.T. (0.46 Mpa) | oC | 118 | ISO 75/B |
| Accelerated oven ageing in air (forced circulation) at 150 °C | hour | 120 | IS04577 |
It is suitable for food contact.
Values shown are averages and are not to be considered as p roduct specification
These values may shift slightly as additional data are accumlsted.
ISO test methods are the lates under the societys current procedures. All specimens
are prepared by injection moulding .