subject: Additives Give Better Household Plastic Products : Injection Molders [print this page] Injection molding is one the most common manufacturing techniques for making products having complex shapes and structures. One of the biggest areas of applications for injection molding is manufacturing household plastic items such as plastic crockery or furniture.
Such items do not have a symmetric shape and can not be manufactured by any other production technique.
However, the process requires preheating of polymers like ABS, HIPS, Nylon, filled PP etc. for up to 4 hrs and consumes expensive electrical energy.
Also, the manufacturers often have to deal with problems like breakage or poor surface finish, whenever using recycled polymer or fillers.
If the preheating is not done, the moisture present in the polymer can create various surface defects such as blisters and delamination, which are not only aesthetically undesirable but also can also severely reduce the quality of end product.
Besides this, there are problems of poor dispersion of color masterbatches or poor flow rates which harass the manufacturers. These problems come from the variation of Melt Flow Indices (MFI) from virgin polymer to recycled one. Most injection molders agree that using additives gives better products and generally enhances productivity.
This is also unacceptable as these items are used in everyday life and the customers look for products with good physical properties as well as surface finish.
Keeping the myriad problems faced by injection molder, Vin Industries has created EliHeat and MoldWel. Both are high performance additives for injection molding.
When mixed with the polymers, EliHeat reacts with moisture and forms stable compounds which do not evaporate and create surface defects. This also means that the additive gives its full weight to the end product.
EliHeat is a very useful additive for injection molders. It removes preheating, which not only shortens the process time but also cuts the power consumption and other costs drastically, said Rohit Mahajan, product specialist at Vin Industries.
On the other hand, MoldWel lowers the viscosity of the mixture and equalizes the MFI of various ingredients, resulting in better flow and productivity, besides ensuring proper dispersion of color in the end product.
High quality surface finish, optimum color dispersion and better physical properties in end products are some of the major advantages of the additive, which comes in opaque, light gray granules.
According to the company, both the additives have generated a loyal customer base due to their high performance and value addition.
Based in New Delhi with a strong sales network throughout India, Vin Industries is the country's leading manufacturer of niche additives for the plastic industries ever since the company's inception in 1997.
