E-FLUTE
One of the wave shapes (A, B, C, E or F) pressed into a corrugated board. An E-flute has 90 flutes +/- in a 3-foot length or 295 +/- in a 15-meter length. The approximate height of the flute is .062" (.157cm) not including the thickness of the facings. The take-up factor of 1.27, See FLUTES or CORRUGATION.
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EDM
Electronic Discharge Machining Process for removing metal- as in rotary dies.
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EDM DIE
A close tolerance die, made by using a Wire EDM machine to wire cut out the internal shape of the die from a solid block of tool steel. EDM dies can hold a tolerance of +0.0001".
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EDM ROTARY TOOLING
Refers to rotary cutting dies made from a solid round blank of hardened die steel. The cutting blades are Electronically Discharged Machined onto the round blank of die steel
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EJECTION RUBBER
Open or closed cell sponge rubber, gum rubber, neoprene rubber or sponged cork rubber used to eject the diecut piece or lay-up of material from a cutting die. The ejection rubber must be placed in the die to adequately eject the material being diecut. This is often a trial and error process. The die ejection rubber should not be in direct contact with the die blades, but have a small separation between the edge of the ejection material and the die blade to allow for rubber expansion in the die.
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ELECTRONIC HEAT SEAL DIE
An electronic heat seal die is a brass rule die used with a RF (Radio Frequency) generator which seals two pieces of vinyl plastic together. The brass rule resonates to a high frequency, which seals the plastic sheets together.
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ELLIPSE
A geometrical figure like a flattened curve. Ellipse creation is an automatic function of virtually all computer graphic systems.
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EMBOSSING
Impressing an image in relief to achieve a raised surface; either over printing, or on blank paper (Which is called blind embossing). A technique for impressing a design or texture into a sheet of material from the back of the sheet so that the design extends toward the viewer.
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EMBOSSING DIE
Engraved or cast die that embosses a design into sheet of paper, paper board or other material that will allow an embossed image to be permanently fixed in the material such as leather or some plastics.
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ENGRAVING
A general term normally applied to any pattern, which has been cut into or incised into a surface by hand, mechanical or etching process.
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ENHANCED PULSING
Electronic modulation of a laser beam to produce a very high peak power at the initial stage of a pulse. This allows rapid vaporization of the material without heating the surrounding area. Such pulses are many times the peak power of the CW mode.
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ENVELOPE WINDOW DIE
A rotary panel die that is used to diecut the window panels in envelopes.
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ETCH
In photoengraving, to produce an image on a plate by chemical or electrolytic action. In offset-lithography, an acidified gum solution used to desensitize the non-printing areas of the plate: also an acid solution added to the fountain water to help keep non-printing area of the plate free from ink.
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