Electric Heating Co., Inc

A

TIP

No, not some information for the track!!! We're talking Watt-Flex® cartridge heaters. The question about use of the hot tip and cool tip has resurfaced a few times so let's review. When we bend our heater over on itself, we have the option of leaving the coil compressed so that it passes right across the tip of the heater, producing a fully heated tip or stretching the coil so it de-rates the tip wattage.

The fully heated tip is exclusive to our split sheath design and should only be used when the heat can be drawn off the tip of the heater through contact with the end of a closed bore or sufficient air movement across the tip to wipe the heat away. The hot tip is ideal for use in branding tools, heat stake machinery, punch sealing machines, hot air knives and gate probes for injection molding.

The cool tip design produces heat to the end of the heater, but essentially takes heat off the "crown" of the tip. If you look into an open bore, it will appear that the heater has a hot tip as the capillary heat will move down the sheath to the tip. The fear is that, if the heat cannot be pulled off a hot tip, it will decrease the ability of the MgO insulation to act as a dielectric and a short to sheath will occur.

Therefore, a heater to be used in an open bore should be designed as a cool tip. Any hole that is drilled through a laminating press, heat seal platen, packaging sealing bar, extrusion head, plastic or rubber mold or manifold, thermoforming die and screen changer will employ a cool tip. This variety provides you with more options for successful Watt-Flex sales.

Friday Funnies

If you were in the military, you surely ran into one of these:

A COLONEL ISSUED THE FOLLOWING DIRECTIVE TO HIS EXECUTIVE OFFICERS:
"Tomorrow evening at approximately 2000 hours Halley's Comet will be visible in this area; an event which occurs only every 75 years. Have the men fall out in the battalion area in fatigues, and I will explain this rare phenomenon to them. In case of rain, we will not be able to see anything, so assemble the men in the theater and I will show them films of it."

EXECUTIVE OFFICER TO COMPANY COMMANDER:
"By order of the Colonel, tomorrow at 2000 hours, Halley's Comet will appear above the battalion area. If it rains, fall the men out in fatigues, then march to the theater where this rare phenomenon will take place, something which occurs only once every 75 years."

COMPANY COMMANDER TO LIEUTENANT:
"By order of the Colonel be in fatigues at 2000 hours tomorrow evening. The phenomenal Halley's Comet will appear in the theater. In case of rain in the battalion area, the Colonel will give another order, something which occurs once every 75 years."

LIEUTENANT TO SERGEANT:
"Tomorrow at 2000 hours, the Colonel will appear in the theater with Halley's comet, something which happens every 75 years. If it rains, the Colonel will order the comet into the battalion area."

SERGEANT TO SQUAD:
"When it rains tomorrow at 2000 hours, the phenomenal 75-year-old General Halley, accompanied by the Colonel, will drive his comet through the battalion area theater in fatigues."

Dalton Electric Heating Co., Inc (978)356-9844
28 Hayward Street Ipswich, MA 01938 USA

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