Development of Melt Index Instrument

One of the most common instruments associated with the polyethylene industry is the Melt Index instrument that is found in research, product and manufacturing facilities around the globe. For commercial applications, polyethylene is sold according to Melt Index values summarized in material specification data sheets, usually by the Melt Index value determined with a 2.16 kg weight (MI  

The Melt Index instrument was developed by Imperial Chemical Industries (ICI) scientists [1] in the late 1930s in order to test polyethylene 

The ICI scientists used this instrument to provide information on the rate that polyethylene samples flowed through the instrument. Relatively higher flows indicated polyethylene with a relatively lower molecular weight. However, the instrument was also used by ICI scientists to measure the elastic properties of the molten polyethylene. The elasticity was expressed as a % recovery once the polyethylene sample (strand) that flowed through the die cooled to room temperature. The % recovery value was calculated from the diameter of the polymer strand (D ) and the diameter of the orifice (DJ  

Dairy Milk bottle resin, ethylene homopolymer 

RM/CastFilm Rotational molding or cast film process 

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