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Patent Searching and Data


Title:
WATER-BASED GRAVURE INK SET
Document Type and Number:
WIPO Patent Application WO/2021/064997
Kind Code:
A1
Abstract:
The present invention relates to (1) a water-based gravure ink set which contains a water-based gravure ink and a water-based medium, wherein: the water-based gravure ink contains a pigment, a polymer, a water-soluble organic solvent, a surfactant, and water; the water-based medium contains a polymer, a water-soluble organic solvent, a surfactant, and water; a 1% (by mass) water mixture of the surfactant has a static surface tension of 45 mN/m or less; the (surfactant in water-based gravure ink)/(polymer in water-based gravure ink) mass ratio is from 0.1 to 0.3; and the (surfactant in water-based medium)/(polymer in water-based medium) mass ratio is from 0.1 to 0.3. The present invention also relates to (2) a method for producing a diluted water-based gravure ink, wherein a water-based medium is added to a water-based gravure ink. A water-based gravure printing ink set according to the present invention places little burden on the environment and enables the achievement of high-definition printed matter with excellent leveling properties even if the print density is adjusted by diluting the ink with a medium.

Inventors:
WATANABE KAZUKI (JP)
MIZUSHIMA RYUMA (JP)
OZAKI YUKI (JP)
MATSUZONO TAKUTO (JP)
UEDA YASUFUMI (JP)
Application Number:
PCT/JP2019/039346
Publication Date:
April 08, 2021
Filing Date:
October 04, 2019
Export Citation:
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Assignee:
KAO CORP (JP)
International Classes:
C09D11/02; B41M1/10
Domestic Patent References:
WO2019130704A12019-07-04
Foreign References:
JP2019116072A2019-07-18
JP2018104637A2018-07-05
JP2015101074A2015-06-04
JP2016044282A2016-04-04
JP2008291072A2008-12-04
JP2016176016A2016-10-06
JP2015101074A2015-06-04
Attorney, Agent or Firm:
OHTANI PATENT OFFICE (JP)
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