Title:
LASER MARKING INK COMPOSITION AND PACKAGING MATERIAL
Document Type and Number:
WIPO Patent Application WO/2019/187578
Kind Code:
A1
Abstract:
Provided is a laser marking ink composition that can form a laser marking layer that enables highly visible recording. The laser marking ink composition contains a binder resin (A) and a titanium oxide (B) that causes color development in the laser marking layer under irradiation with laser light, wherein the titanium oxide (B) contains at least one surface-treated titanium oxide (BI) selected from the group consisting of alumina-treated titanium oxide (b1), alumina-silica composite-treated titanium oxide (b2), and ATO-treated titanium oxide (b3). The laser marking ink composition satisfies at least one of a condition 1 and a condition 2, wherein condition 1 is a ratio (BI/A) of the content of the surface-treated titanium oxide (BI) to the content of the binder resin (A) of 2.5 to 6.5 as the solids mass ratio, and condition 2 is a ratio (b3/A) of the content of the titanium oxide (b3) to the content of the binder resin (A) of 1.0 to 6.5 as the solids mass ratio.
Inventors:
IGARASHI KASUMI (JP)
MASAOKA HAYAKAZU (JP)
MASAOKA HAYAKAZU (JP)
Application Number:
PCT/JP2019/002655
Publication Date:
October 03, 2019
Filing Date:
January 28, 2019
Export Citation:
Assignee:
DAINICHISEIKA COLOR CHEM (JP)
International Classes:
B41M5/32; B41M5/46; B65D25/20; C09D11/037; C09D11/10; C09D11/50
Domestic Patent References:
| WO2013141157A1 | 2013-09-26 | |||
| WO2013031399A1 | 2013-03-07 | |||
| WO2017016645A1 | 2017-02-02 | |||
| WO2018101123A1 | 2018-06-07 |
Foreign References:
| JP2015147379A | 2015-08-20 | |||
| JP2009083185A | 2009-04-23 | |||
| JP2010047681A | 2010-03-04 | |||
| JP2010155365A | 2010-07-15 | |||
| JPH1170734A | 1999-03-16 | |||
| JP2019001945A | 2019-01-10 |
Attorney, Agent or Firm:
KONDO Rieko et al. (JP)
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