ASH WIN ENGINEERS, having made its modest beginning in 1992 at Ahmedabad, India. Which is now undisputed player in manufacturing and export of State of the art full range of Rotomolding machines, Microfine Pulvering system, Compounding Extrusion Lines, Highspeed Mixers, Scrap Granulators, Vibratory Screens, Rotational Moulds of Mild steel/ Stainless steel and also other related Plastics auxiliary equipments. The promoters are visionary engineers who are possessing strong technical as well as management back ground with focus in manufacturing of Plastic Rotational Molding Plants and Extrusion processing plants.
Raw material
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Raw material for Rotational Molding

LLDPE ( Liner Low density Polyethelene ) /MDPE (Medium density Polyethelene) / HDPE (High density Polyethelene) are being used with density of 0.92 to 0.95 gms/ Cm cube and Melt Flow Index in the range of 3 to 4.5 gm per 10 minutes. To produce the good quality water tanks by Rotational Molding, the material should have following properties.

  • Good mechanical strength.
  • Good material stability over a wide range of temperature and cycle time.
  • Good resistance over warpage.
  • Consistency in Shrinkage at least 2.5 % or slightly more.
  • High ESCR ( Environmental stress crack resistance )

Other Ingradients

The original LLDPE granules are of natural colour which have to be converted in to either black, white, blue or other colours as per requirement of final product. To produce the coloured granules , basic LLDPE granules have to be mixed with colour concentrate which are called as master batches.

These master batches are readily available in market which are to be added alongwith LLDPE.

The master batch should be of grade which is LD based. The master batch with antioxidants are more preferred. Anti oxidants protects the material from oxidation during the molding process which helps to avoid the pin holes on surface of finished product.

Incase of black master batch, carbon contents are very important. Carbon contents act as UV stabilizer. It helps to improve the life of tanks if tanks are exposed to sunlight for longer period and to avoid the crack on tanks.

Some other common additives like flame retardants, anti static agents, foaming agents, are also used as per requirements.