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MACHINE DIRECTION
The direction of paper in its forward movement through
a paper handling machine or printing press.
MACHINE FINISH
A term applied to a paper with a glazed surface
finish created by means of calenders (cast iron rollers with chilled,
hardened surfaces).
MACHINE READABLE
Refers to the scanning of a barcode symbol by a
laser scanner or similar device.
MAGNETIC CYLINDER
A cylinder used in die-cutting that is magnetized
to accept and hold flexible steel dies in place. Also used for metal-backed
printing plates.
MAGNETIC DIE
A thin, flexible, steel cutting plate that is held
onto a base cylinder magnetically.
MAKE-READY
On printing presses, all operations prior to running:
mounting plates, adjusting the in-feed, setting the edge guide,
putting ink in the fountain, adjusting the impression, setting up
the die cutting, color matching, etc.
MASTER ROLL
A full width roll that has finished the primary
manufacturing process and is usually untrimmed and unslit.
MATERIAL
Usually refers to unconverted stock, pressure sensitive
or not.
MATERIAL SPLICE
An area where tape has been used to attach two rolls
of material together to form one continuous web.
MATRIX (WASTE SKELETON)
The face material and adhesive layers of a pressure
sensitive construction surrounding a die cut label which is typically
removed after die cutting.
MATTE FINISH
A low-gloss or non-gloss finish. A UV-curable clear
coat may also be used to produce a matte or textured finish.
MATTE LITHO
A litho paper with a satin finish between high gloss
and dull finish that is ideal for barcode printing.
MEMORY
The property of a material that causes it to shrink
or return to its original dimensions after being distorted, die
cut, or subjected to temperature change.
METAL FOIL
Thin, flexible layer of metal, such as aluminum,
used as face materials. Thinner gauges are often laminated to paper
for strength.
METALLIZED FILM
A plastic or resinous film that has been coated
on one side with a very thin layer of metal.
METALIZED PAPER
Paper that has a thick deposit of metallized particles
that resemble a layer of foil. Metallized paper offers reduced stiffness
and better flexibility than metallized film, and has an appearance
similar to laminated foil papers.
MOIRE
An undesirable pattern that occurs when screens
are out of register or the wrong screen is used.
MOISTURE CONTENT
The moisture present in a material. This is particularly
important in liners.
MOISTURE EQUILIBRIUM
The condition reached by a material when it shows
no change in weight, in relation to the amount of moisture absorbed
by the material.
MOISTURE-PROOF
The property of a material which makes it virtually
impervious to moisture.
MOTTLED SURFACE/MOTTLING
Non-uniform appearance of coloring or blotching
of a face material.
MOUNTING
Placing the plates on the cylinders so that the
colors line up correctly.
MULTIPLE-WEB CONSTRUCTION
A construction consisting of two or more face materials
and/or adhesives on the same liner.
MYLAR™
Dupont's trademark for clear, tough polymeric polyester
film.
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