GB/T 14624.2-2008Test method for colour strength of offset ink (English PDF)

Foreword

GB/T 14624 in this section instead of GB/T 14624.2-1993 "ink color strength test method." this portion of the GB/T 14624.2-1993 The main differences are as follows.

--- Standard name was changed to "offset printing ink color strength test methods";

--- Like paper made from scratch blueprint paper to 80g/m2 offset printing paper;

--- Ambient temperature index has been adjusted to cancel the humidity requirements;

--- Canceled Appendix A.

This part is proposed by the China National Light Industry Council.

This part of the National Standardization Technical Committee under the jurisdiction of the ink.

This section is drafted. Hangzhou Toka Ink Chemical Co., Ltd., Taiyuan, Gao Laurie Ink Chemical Co., Ltd. Zhejiang Yong Chemical Co.

Secretary, Tianjin Toyo Ink Co., Ltd., the state printing and decorating products Quality Supervision and Inspection Center.

1 Scope

GB/T 14624 in the test methods specified in this part of the offset printing ink color strength.

This section applies to offset printing ink color strength test.

2 Normative references

The following documents contain provisions which, through reference GB/T 14624 in this section constitute provisions of this section. For dated reference documents Member, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouraged to reach under this section Parties to research agreement to use the latest versions of these documents. For undated reference documents, the latest versions apply to this section.

GB/T 14624-2009 Test method for color offset printing ink QB/T 1012-1991 offset printing paper Principle 3 White ink to quantify the sample and standard samples are dilute, the ink density after contrast, expressed as a percentage of.

4 Tools and Materials

4.1 palette knife.

4.2 blade.

4.3 Sample scratch paper. 80g/m2 offset printing paper, in line with QB/T 1012-1991A type, size 210mm × 70mm, top down 130mm Department has 20mm wide black bars indicate the ground.

4.4 offset printing white ink.

4.5 Offset black ink.

4.6 Analytical Balance. Precision 0.001g.

4.7 glass.

5 Test conditions

5.1 test should be carried out at a temperature of (23 ± 2) °C conditions.

5.2 observe dilute scraping samples should be conducted under D65 standard light source.

6 Step, test

6.1 analytical balance, weigh white ink 2g, 0.2g sample ink on glass slides, using the same method, the same proportion, weighed and labeled white ink Like ink, the ink samples were weighed good with palette knife mix thoroughly.

6.2 left with palette knife and mix thoroughly to take a standard sample of about 0.5g applied to scrape the top right kind of paper, mix thoroughly and then take a sample of about 0.5g to scratch like paper Above, the two should not adjacent connected.

6.3 The blade is placed on top of the coated sample of the ink, so that the main part of the blade and the blade-like paper angle of 90 °. Forced to scrape the ink from top to bottom Scrape into thin like paper, until the black bars indicate lower half at reduced force, so that the inside of the blade angle of approximately 25 ° angle, so that the ink on the paper coating A thicker ink layer (such as GB/T 14624.1-2009 in Figure 1). Final scratch like shape should be such as GB/T 14624.1-2009 in 1 is similar to FIG.