PKSC 4300 EXAM 3
Why use a vacuum for coating
allows materials to be vaporized at lower temps than regular
atmospheric conditions
Why metallize/vacuum coat?
Foil replacement
Cheaper gas barrier
Takes previously bad barrier films and makes them useable
Also helps with barrier to light
SiOx coating
Gives clear barrier
metal detector friendly
Process print
Using small dots of multiple colors to achieve certain colors
Line (spot) print
Printing a full coverage of a single color
Printing technologies used in packaging
Flexography (flexo)
Rotogravure (roto or gravure)
Fundamentals of printing
Selective application (ink not applied to 100% of web)
Metering
Color control and pigment add complexity
Conventional graphics process
, Initial artwork
Separations
Printing surface
Printing machine
Digital to plate
Initial artwork
Separations printing surface prep occur in one step
Printing machine
CMYK
Cyan
Magenta
Yellow
Black/Key
Gamut
Colors that can be reached through CMYK
Expanded Gamut
More colors attainable than CMYK due to more separations
Could lead to less press changeovers than CMYK
Flexography
Relief/typographic process
Indirect process
Metering and application are separate processes
Flexography process
Ink applied to engraved anilox roller
Ink transfers to plate or cylinder
Ink transfers to substrate
Flexo and continuous design
Why use a vacuum for coating
allows materials to be vaporized at lower temps than regular
atmospheric conditions
Why metallize/vacuum coat?
Foil replacement
Cheaper gas barrier
Takes previously bad barrier films and makes them useable
Also helps with barrier to light
SiOx coating
Gives clear barrier
metal detector friendly
Process print
Using small dots of multiple colors to achieve certain colors
Line (spot) print
Printing a full coverage of a single color
Printing technologies used in packaging
Flexography (flexo)
Rotogravure (roto or gravure)
Fundamentals of printing
Selective application (ink not applied to 100% of web)
Metering
Color control and pigment add complexity
Conventional graphics process
, Initial artwork
Separations
Printing surface
Printing machine
Digital to plate
Initial artwork
Separations printing surface prep occur in one step
Printing machine
CMYK
Cyan
Magenta
Yellow
Black/Key
Gamut
Colors that can be reached through CMYK
Expanded Gamut
More colors attainable than CMYK due to more separations
Could lead to less press changeovers than CMYK
Flexography
Relief/typographic process
Indirect process
Metering and application are separate processes
Flexography process
Ink applied to engraved anilox roller
Ink transfers to plate or cylinder
Ink transfers to substrate
Flexo and continuous design
