Diameter Subject index

High-load melt index n. (1) The rate of flow of a molten resin through an orifice 2.096 mm in diameter and 8.000 mm long at 190°C when subjected to a pressure difference of 2.982 MPa. Shah V (1998) Handbook of plastics testing technology. John Wiley and Sons, New York. 

As evaluation indexes of the roughness sensation, nine kinds of close-set lead balls that had different diameters from 0.5 to 10 mm were used. The wearable tactile display system shown in Figure 8.5 was used. The amplitudes of the stimulations were fixed at 6.0 V (= the maximum input) and each offset was 0.5 V. The offset was needed to avoid an insensitive zone caused by shortage of amplitudes of the actuators. The subjects put the device on the right middle finger. They touched the index with their left hand at the same time. There was no restriction on time to explore. The subjects were six males in their twenties. 

Melt Index n The amount, in grams, of a thermoplastic polymer which can be forced through an orifice of 0.0825 in. diameter when subjected to a force of 2,160 gf in 10 min at 190°C. 

There have been a number of reports that surfactants and emusifying agents affect the spray characteristics particularly the size of droplets formed and the distribution of droplet sizes. A particularly important droplet index is the proportion of droplets with a diameter less than 100 urn since such droplets represent the upper limit of sizes subject to respiratory inhalation. When the proportion of such droplets is high hazards arise because breathing in spray mist causes intoxication. Furthermore, sprays with these characteristics are prone to drift and action on non-target areas is more difficult to control. 

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