Bins are made with both HDPE and Impact Co-polymer. Perforated thin walled bins are
moulded with PP Impact Copolymer of high flow grade better ESCR properties.
. Polypropylene is preferred because of
The inner container is made with PP Homopolymer
and the outer with Homo or Impact
Copolymer of 11.0 to 12.0 MFI. The top and bottom covers are made with Impact Copolymer of same grade.
Propylene Copolymers as such and compounded with additives are used extensively in appliances like washing machines, fans and refrigerators.
PP Impact Copolymers of various MFI are used depending on the size and thickness of the product.
Large products like twin-tub of washing machine require nucleated grades of PPCP, which have
high stiffness and heat deflection temperature. Nucleation also
Single tubs of automatic washing
shortens the moulding cycle a beat stabilizer additive to
withstand the heat given by hot water.
Repol B220 MN has been accepted by M/s. Whirlpool, M/s. Godrej and M/s. BPL to mould large products.
Paint containers and lids are moulded with both HDPE and PPCP. UV stabilized grade of HDPE, Relene L 60075 is used, as the containers are subjected to exposure to sunlight in shops. It is advisable to add UV additive in the form of masterbatch to containers made out of PPCP also. Thin walled paint containers called "Bocans" are made out of high flow nucleated PPCP to withstand post moulding forming operations and stackability.
Containers for packing grease are made out of PPCP because of better ESCR properties.