Ullage
Term for the headspace
above the product inside a container.
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Ultrasonic sealing
A sealing method
using ultrasonic frequencies applied to the surfaces to be sealed (20-40
kHz).
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Ultra-violet (UV) curing
Drying/curing of
printing inks and varnishes using UV radiation.
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Undercut
An indentation or
protuberance on a moulded form that impedes the withdrawal of the item from
the mould.
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Underpackaging
A condition where
methods and materials used to package an item are inadequate for the level of
protection or other functional characteristics needed for a given
distribution and use requirement.
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Underprint
The first impression in printing, usually for the purpose of
attaining the true colour of the ink by printing the same, or a darker, value
of the same hue, or even black, to absorb the light reflected from the paper
through the ink applied in the final printing of the design. For example, a
single impression of a dark blue printed by letterpress on white paper or
board will frequently lack "depth" due to a certain amount of light
being reflected through the ink film by the white paper or board. If,
however, the design is first printed in black or dark blue, and then printed
with the final colour, the latter will show the desired "depth"
and hue.
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Unit Dose Packaging
A package which
contains one discrete dosage form, i.e., one tablet, one capsule, one 2 ml
quantity of liquid, etc. A unit package consists of the unit quantity,
protective wrapping, cushioning, and identification marking, up to but not
including the shipping container. Single dose unit packaging is used for
foods, drugs, cosmetics, medical devices and some industrial products.
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Uncaser
A machine to remove
empty bottles or cans from their shipping cases.
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Unit dose
A single unit
package which contains, for example, one prescribed pharmaceutical dosage. A
tablet or a measured amount of liquid or powder.
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Unit weight
Indicates
how much one square metre of paper or any other substrate weighs in grams
(g/m2). Also called substance or grammage. In the United States of
America the basis weight is given for paper in pounds per 3,000 square feet
and for paper board the weight is expressed in pounds per l,000 square feet.
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United Nations (UN) Number
Four digit number
assigned by the UN Expert Committee on Transport of Dangerous Goods, to
identify groups of dangerous substances.
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Unique selling point / propisition (USP)
Selling feature of a
product that distinguishes it from its competition.
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Unitize
The forming of
several units into one larger unit such as pallet load or bundle.
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Unscrambler
A machine for
aligning randomly received and placed containers of various types in an
orderly manner, to feed into the next operation of a packaging or filling
line.
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Unscrewing Mould
Mould action in the
manufacture of closures. After the injection cycle is completed, the mould
cavity is removed. The core then begins to rotate, literally unscrewing the
core from the closure, as a stripper sleeve moves forward to eject it.
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U.P.C.
The Universal
Product Code, also described as Uniform Product Code. The principal United
States numeric bar coding system for product identification.See also: EAN.
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Urethane plastics
(1) Plastics based
on resins made by the condensation of organic isocyanates with compounds or
resins that contain hydroxyl groups. (2) Urethane plastics are a type of
iso-cyanate plastics, are generally elastomeric and are available as foams,
solid plastics, and coatings.
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