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EQUIPMENT AVAILABLE AND BASIS FOR CALCULATION COSTS

Basis for calculating costs for manufacture of resin bonded roof tiles

 
 
Gross quantity required per m2
MATERIALS
 
 
Sand
Cost of sand (most types of sand including sea sand are suitable - sand should be free running without lumps or gravel)
Cost for transport of sand
Total sand
 
17.34 kg
Polymer
Hard Polymer (ABS, HIPS, Polystyrene)
Soft Polymer (LDPE, HDPE, Polypropylene)
Total Polymer
 
7.56 kg
Masterbatch
Cost per kg - $US 2.6
Cost to deliver
Total Masterbatch
 
0,193 kg

PACKING to pallet (not essential)
Corrugated cardboard
Pallet
Packing list
Lable


 
FACTORY COSTS
Water (300 litres required for storage)
Electricity
 

0.076 litres per m2
8.4 kW per m2

LABOUR
Sorting & breaking
Shred & operate magnetic separator
1st extrusion
Moulding press
Mix preparation & 2nd extrusion
(7 persons required if unsorted mixed waste plastic is used or 5 persons required if pre-sorted plastics are used)


1 per shift
2.5 per shift
1.5 per shift
1 per shift
1 per shift






5-7 persons per shift
OVERHEAD
Factory overhead - 100 sq metres per line
Engineering support
Administration & management
Amortization
 
 
FACTORY SPACE REQUIRED, per line 100 square metres of covered space
100 square metres external space
 
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