Project Report on Rigid PVC Film Manufacture For Pharmaceuticals Blister Packaging [EIRI-1533]

Plastic films (PVC) have got wide uses including for garments and saree packaging. Polyvinyl chloride (P.V.C.) is one of if not the largest single volume plastics material in general use in the world. It is potentially one of the lowest cost  materials. The French chemist Regnault first discovered P.V.C. in 1835 and it was initially marketed commercially in 1827. P.V.C. has  achieved this  market leadership because of its good physical  properties, its compounding versatility for a wide variety of applications, its  low cost, and processing case. These desirable    properties include  self extinguishing characteristics, water, chemical  and abrasion resistance,  good strength properties  and  a  complete range  of colours. The compounds range from soft flexible  films, to  rigid,  high strength  products. Plasticizers  lubricants, fillers and stabilizers are used to produce this versatility  and it possible to make a compound with a right balance of properties for  almost any application. P.V.C. products will melt  but  will not   burn  and  good  weather  ability  has been  achieved by compounding. There are various theories on compounding of  P.V.C. but the PVC processor especially in small scale sector  in India because of lack of availability and high price of sophisticated equipments instruments testing facilities   trained technical  personnel,  raw materials looks forward  to  something practical  which wood  benefit him in knowing the  best  possible and  most  economical  method  of  PVC compounding.  Compounding process  includes  (i) formulation of compound according  to  the properties  desired (ii) Palletizing. The palletizing process is done either by rotary knife cutter or granulator. There are heavy duty  and  light  duty machines, the former  for  such  scrap  as extrusion and injection machine purging and waste and the  latter for  spures  and runners, films upholstery material,  etc.  Small machines  are  available  to be kept by  the  side of  injection presses,  extruders etc. and the scrap is used as it is made. It has the advantage  of  continued  use  with  no   scrap,   no contamination, no bagging and no transport.