The main raw material, in the central layer, is the isotactic Polypropylene, a semi-crystalline and thermoplastic material. Whereas, for the outer layers, ethylene-propylene and/or ethylene-butane-propylene copolymers are used. These materials are introduced inside the extruders by a hopper system.
Isotactic Polypropylene Raffia grade (PP Raffia), primarily made from woven sacks and jumbo bags, suitable for bitumen water proofing membranes application, with two main grades, first one is Black Color with MFR 7-10 g/10min-2.16kg @230 C. degree, and the second type is Dark Green Color with MFR 11-14 g/10min-2.16kg @230 C. degree which is suitable for high quality product of Bitumen Water Proofing Membranes as an additive to improve mechanical properties and also for injection application as vegetable crates and chairs.
Polypropylene (PP) is a thermoplastic resin polymerized from propylene monomer. It is a colorless, odorless and non-toxic white translucent waxy granular material. Polypropylene is divided into homopolymers and copolymers, of which homopolymers are isotactic, syndiotactic and random. Homopolymer isotactic polypropylene is the most used. Polypropylene has good thermal performance.
PP Blow moulding Grade Item Value Unit MFR 3.0 g/10min Tensile strength at yield 34.9 MPa Tensile strength at break 23.4 MPa Isotactic exponent 96.8 % Ash 0.03 % Nominal tensile fracture strain 504 %. In 25kg polyethylene film bag with outer polypropylene woven bag. Can be palletized. 16.5ton/20'container.
