What effect does the melt index of a resin have on its ability to be rotationally molded? When (give two examples of parts or applications) would you want to use a higher melt index resin? When (give two examples) would a low melt index resin be desired? Explain
What will be an ideal response?
When the material has a low melt index it indicates that the material is of high molecular weight. This high weight does not enable the material to "flow" well through the mold and requires a higher temperature and longer cycle time for the
machine. Two examples that would require a lower melt index would be a truck bed or the TYCO children's playgrounds that would have to withstand greater pressures and weights.
A higher melt index for a rotomold would allow the material to "flow" better and reach deep crevices, lower temperatures and lessen the cycle time of parts. Two examples of this type of application would be a cheap bouncy ball or a bathtub rubber ducky that would require a squeeker later.
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A. Ice has formed on the road. B. The pavement is dry. C. The spray is caught on the underside of the vehicle.
Any known metal can be melted, even vaporized, by the plasma jet process, making it useful for many welding operations.
Answer the following statement true (T) or false (F)
Blueprints are made by treating a heavy papaer with _____________, exposing it to sunlight.
Fill in the blank(s) with the appropriate word(s).
The __________ encoder system does not lose its position data if power is lost.
A. incremental B. absolute