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Term |
Definition |
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E Dimension
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The outside diameter of neck on a threaded bottle neck (finish). The diameter of the neck (finish) is measured across the root of the threads.
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EAA
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Ethylene acrylic acid
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EC
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Ethyl cellulose
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ECTFE
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Ethylene chlorotrifluoroethylene
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EEA
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Ethylene/ethyl acrylate
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Effect of Strong Acids
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A descriptive notation to indicate the material's performance.
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Effective Thread Turns
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The number of full 360 turns on a threaded closure that are actually in contact with the neck thread.
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Ejector Pin (on sleeve)
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A pin or thin plate that is driven into a mould cavity from the rear as the mould opens, forcing out the finished piece. Also Knockout Pin.
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Ejector Return Pins
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Projections that push the ejector assembly back as the mould closes; also called Surface Pins and Return Pins.
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Ejector Rod
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Bar that actuates the ejector assembly when mould is opened.
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Elastic Deformation
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The part of the deformation of an object under load which is recoverable when the load is removed.
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Elastomer
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A material which at room temperature stretches under low stress to at least twice its length and snaps back to the original length upon release of stress. See also Rubber.
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Electroformed Moulds
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A mould made by electroplating metal on the reverse pattern on the cavity. Molten steel may be then sprayed on the back of the mould to increase its strength.
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Electronic Treating
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A method of oxidizing a film of polyethylene to render it printable by passing the film between the electrodes and subjecting it to a high voltage corona discharge.
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Electroplating
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The deposition of a layer of metal on a base of metal or conducting surface by electrolysis.
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Elongation
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(1) The change in the length of a body pulled in one direction by the application of a force (2) The fractional increase in length of a material stressed in tension.
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Elongation, Break
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The increase in distance between two gauge marks at the break point divided by the original distance between the marks. A zero value in the field indicates that it measured less than one.
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Elongation, Yield
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The increase in distance between two gauge marks at a yield point divided by the original distance between the marks. A zero value indicates that it measured less than one.
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EMA
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Ethylene/methacrylic acid
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Embossing
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Techniques used to create depressions of a specific pattern in plastics film and sheeting.
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