PLASTICS WORLD SERVICE

Introduction to Maintenance   Maintenance and its types   Maintenance is a set of organised activities that are carried out in order to keep an equipment (or) machine in its best operational condition with minimum cost acquired.   There are four types of Maintenance,   1. Corrective or Breakdown maintenance   2. Scheduled  maintenance    3. Preventive maintenance   4. Predictive maintenance   Objectives of maintenance   Maintenance objectives should be consistent with and subordinate to production goals. Maximising production at the lowest cost and at the highest quality and safety Standards. Reducing breakdowns and Optimising resources utilisation. Improving equipment efficiency and reducing down time. Minimising energy usage and optimising the useful life of equipment.    Scheduled maintenance  Scheduled maintenance is a stitch-in-time procedure and incorporates inspection, lubrication repair and overhaul of equipment's. Scheduled maintenance is a service carried out by a compete

 Specific Gravity Of Polymers 1. Polyolefins Polymer Abbreviation Specific Gravity Low density polyethylene LDPE 0.91 – 0.92 High density polyethylene HDPE 0.94 – 0.96 Linear low density polyethylene LLDPE 0.91 – 0.93 High molecular high density polyethylene HMHDPE 0.94 – 0.97 Ultra high molecular HDPE UHMHDPE 0.97 Polypropylene PP 0.89 – 0.91 2. Chlorinated Polymers Polymer Abbreviation Specific Gravity Poly vinyl chloride PVC 1.38 – 1.41 Poly vinyledene chloride PVDC 1.65 – 1.75 Chlorinated PVC PVCC 1.44 – 1.47 Co-polymer of vinyl chloride & vinyl acetate PVC-co-VA 1.16 – 1.36 Poly vinyl alcohol