creen Printing
Screen process printing has been used successfully to print on Tyvek® for specific applications, especially short press runs of jobs using large type and simple graphics. Because of the high potential for static and/or ink pick-off, the use of paper slip sheets is sometimes required.
The inks used must be specially formulated for the lower surface tension encountered when printing on untreated styles of Tyvek®. Lacquer-type inks are preferred because they produce a minimum amount of distortion. Water-based inks work well because they minimize distortion -- even with heavy ink-film thicknesses. Ultraviolet-cured screen inks also have been used successfully. Screen "poster inks" and enamels, which both contain a high percentage of mineral spirits, should be avoided.
Tyvek® is high-density polyethylene (HDPE), with a melting point of 275°F (135°C). When using conveyor ovens instead of room-temperature drying, the sheet temperature should be kept below 175°F (79°C). When using UV-cured screen inks, cooling is required to prevent sheet distortion or shrinkage.
creen Printing
Screen process printing has been used successfully to print on Tyvek® for specific applications, especially short press runs of jobs using large type and simple graphics. Because of the high potential for static and/or ink pick-off, the use of paper slip sheets is sometimes required.
The inks used must be specially formulated for the lower surface tension encountered when printing on untreated styles of Tyvek®. Lacquer-type inks are preferred because they produce a minimum amount of distortion. Water-based inks work well because they minimize distortion -- even with heavy ink-film thicknesses. Ultraviolet-cured screen inks also have been used successfully. Screen "poster inks" and enamels, which both contain a high percentage of mineral spirits, should be avoided.
Tyvek® is high-density polyethylene (HDPE), with a melting point of 275°F (135°C). When using conveyor ovens instead of room-temperature drying, the sheet temperature should be kept below 175°F (79°C). When using UV-cured screen inks, cooling is required to prevent sheet distortion or shrinkage.
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