This standard specifies the test method for anti-blocking of gravure plastic ink. Applicable to the test of anti-blocking of gravure plastic ink. GB/T 13217.8-1991 Test method for anti-blocking of gravure plastic ink GB/T13217.8-1991 Standard download decompression password: www.bzxz.net
This standard specifies the test method for anti-blocking of gravure plastic ink. Applicable to the test of anti-blocking of gravure plastic ink.

National Standard of the People's Republic of China
Test method for blocking resistance of plastics gravure printing inks
Test methou for blocking resistance of plastics gravure printing inksSubject content and scope of application
This standard specifies the test method for blocking resistance of gravure printing inks for plastics. This standard is applicable to the test for blocking resistance of gravure printing inks for plastics. 2 Reference standards
GB/T13217.1 Test method for gravure printing inks for plasticsColor test3 Principle
GB/T 13217. 8-91
The prepared villa film print is folded in half once within a specified time, and at a certain temperature and pressure, after a certain seal, the adhesion of the print is observed.
4 Materials
4.1 Low-density ethylene film: after EDM treatment, the surface wetting tension is 38×10-540×10N/cm (38~40dyn/cm), and the thickness is 0.05±0.01 rrm. 4.2 Cotton yarn.
4.3 Scrubbing solvent: ethanol or gasoline.
4.4 Translucent millimeter grid paper: 20mm×20mm. 5 Instruments
5.1 Glass rod: 7mm, 250mm long
5.2 Glass sheet: 20 mm×20mm×2mm. 5.3 Wire rod: copper rod body 9±0.05mm, 170mm long, stainless steel wire winding part 100±0.50mm long, steel wire g0.12mm, closely wound and arranged, neat and seamless.
5.4 Magnetic code: 2000g.
5.5 Stopwatch: the scale value is 0.2$.
5.6 Electric heating blast oven: 25~300℃.
6 Inspection conditions
The inspection should be carried out at 50±1℃.
7 Inspection steps
7.1 Prepare samples according to GB/T 13217.1. www.bzxz.net
National Technical Supervision Department approved on September 14, 1991 and implemented on August 1, 1992
GB/T 13217.8—91
7.2 After placing the printed sample for 2 minutes, fold it between two glass sheets with the upper and lower circles, place the system in an oven at 50±1℃, press a 2000g magnetic code and place it for 2 hours.
7.3 Take it out after one hour, open the folded part, and measure its adhesion. 8 Test results
Cover the compressed part with a 20mm wide translucent millimeter grid paper. Count the number of grids occupied by the ink layer and the number of grids occupied by the removed ink layer. Calculate according to the following formula:
B(%)=
Where: B- ink adhesion degree.
B,-number of grids of the oil layer.
B number of grids of the removed oil layer.
Additional instructions:
This standard is proposed by the National Technical Committee for Standardization of Ink. This standard is proposed by the National Technical Committee for Standardization of Ink. B
Bi + B,
This standard is drafted by the Technical Committee on Ink Inspection Methods of the National Technical Committee for Standardization of Ink. The main drafters of this standard are Lian Sheng, Tian Jianzhong and Li Zhiguang 20
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