The selection and application of resistance to cooking plastic ink pigments (2)

3. Determination of ink properties

1) Ink adhesion fastness test

    1 The reference standard is GB/T 13217.7-91 GB/T 13217.1-91, and the test is carried out at a temperature of 25±1°C and a humidity of 65%±5%.

2 test results and analysis

The BOPA film was subjected to ion bombardment treatment with a vacuum coating machine for 3 minutes to increase the surface tension of the film. After the comparison experiment with the PET film (see Table 3), the following points can be drawn:

a. Unlike printing materials, the adhesion fastness to ink is different. Lisolol Baohong BK ink is the most affected by the material, and the fastness of 3 materials such as Everlast Red 2B is relatively close, and the attachment fastness is less affected by the material.

b. The fastness of permanent red 2B is better, and the permanent red F4R is the worst.

c. After the ion-treated film material, the attachment fastness to various inks has been significantly improved.

2) Determination of Ink Gloss

1 Reference Standard: GB/T 13217.2-91. The test was performed at a temperature of 25±1°C and a humidity of 65%±5%.

2 test results and analysis

The experimental results show that the order of the glossiness of the three inks is: Yongkanghong 2B> Yongguhong F4R> Lithol Baohong BK. It can also be seen from the table that the glossiness of the ink is not related to the printing material. Some deviations in the data in the table are relatively large. The main reason may be that the ink on the film is not uniform, resulting in different reflectivity to light.

3) Determination of ink fineness

1 Reference Standard: GB/T 13217.2-91. The test was conducted at a temperature of 25>±1°C and a humidity of 65%±5%.

2 test results and analysis

Three samples of each ink were taken and the fineness measurement was: the average fineness of Lisol's BK ink was 4μm, the average fineness of the permanent red F4R ink was 2μm, and the permanent red 2 ink was fine. The average value is 5 μm, and the average value of the fineness of the Jinguanghong C ink is 21 μm.

The results showed that the average fineness of Everfix Red F4R ink and Lithol Baohong BK ink is similar, and the particles of Jinguanghong C ink are relatively hard. In the process of ink preparation, the grinding time should be prolonged.

4) Determination of ink flow

1 Reference standard GB/T14624.3-93, measured at a temperature of 25±1°C and a humidity of 65%±5%.

2 experimental results and analysis

The flowability of the ink was measured by lateral and longitudinal measurements. The mean diameters of the three types of inks were measured. The measurement results were as follows: Lithol Baohong BK was 62mm, permanent red F4R was 58mm, and permanent red 2B was 62.5mm.

The following is the discoloration of the ink under different boiling conditions

Water boiling conditions 100°C 121°C 121°C 121°C 121°C

40min 15min 30min 15min 30min

Test materials distilled water distilled water distilled water tap water tap water

Jin Guanghong C/PET film 4 1 1 1 1

Everlasting Red F4R/PET film 4 4 4 3 2

Lisol Red BK/PET film 4 3 3 2 2

Everlasting Red 2B/PET Film 5 5 5 3 3

Jin Guanghong 2B/PET film 3 2 1 1 1

Permanent Red F4R/BOPA Film 3 4 4 3 3

Lisol Red BK/BOPA Film 4 4 3 2 2

Everlasting Red 2B/BOPA Film 3 4 4 4 4

The experimental results show that the three inks have little difference in fluidity. The flow of Everhold Red 2B ink and Lithol Baohong BK ink is almost the same, slightly better than Everfix Red F4R ink.

5) Ink initial measurement

1 Reference standard: GB/T 13217.5-91, testing at a temperature of 25±1°C and humidity of 65%±5%.

2 experimental results and analysis

The average value of the initial dry length of the three kinds of inks is Lisuo Baohong BK 55.5mm, Everlasting Red F4R 41.5mm, and Everlasting Red 2B 50.5mm.

The following is the test result of ink fastness

Sample Sample 1 Sample 2 Sample 3 Average

experiment material

Everlasting Red F4R/PET film 56.94 55.31 - 56.12

Litholor BK/PET film 100 100 100 100

Everlasting Red 2B/PET Film 99 99 97 98.33

Everlasting Red F4R/BOPA Film 15.28 43.20 27.59 28.69

Lisuerbao BK/BOPA film 23.56 46.10 - 34.83

Everlasting Red 2B/BOPA Film 67.33 80.23 - 73.78

Everlasting Red F4R/Ion Processing BOPA Film 91.18 97.66 - 94.42

Litholor BK/Ion-treated BOPA film 100 100 100 100

Permanent Red 2B/Ion Treated BOPA Film 100 99 99 99.33

The initial dryness of Lisol's Baohong BK ink is much better than that of the other two inks. The permanent dryness of Everlasting red F4R is the worst.

6) Ink resistance test

1 Reference standards: GB/T13217.8-91, GB/T13217.1-91, test temperature 50 ± 1 °C.

2 test results and analysis

The order of the anti-blocking properties of the three inks was Everfix Red 2B (90)> Everlast Red F4R (40)> Lisol Red BK (15).

Experimental results show that the anti-blocking property of Yongguhong 2B

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