This standard specifies the method for evaluating the acid resistance of printed products. This standard applies to all printing methods and substrates, such as paper, paperboard, plastics and metals (metal foils and metal plates). GB/T 18724-2002 Printing technology Determination of acid resistance of printed products and printing inks GB/T18724-2002 Standard download decompression password: www.bzxz.net
This standard specifies the method for evaluating the acid resistance of printed products. This standard applies to all printing methods and substrates, such as paper, paperboard, plastics and metals (metal foils and metal plates).

GB/T187242302
This standard is equivalent to 15011628:1955 Printing Technology Printed Products and Printing Oils Acid Resistance Determination Appendix A of this standard is used to collect the information shown.
This standard is also proposed by the General Administration of Standardization of the People's Republic of China. This standard is under the jurisdiction of the National Printing Standardization Technical Committee. The drafting unit of this standard is Liaoning Printing Technology Research Institute. The main drafters of this standard are: T Chunrong, Lin Qing, Zhou Yuan, Li Chunru. 133
GA/T 187242002
IS (International Organization for Standardization) is a world-class standardization organization composed of national standardization bodies (member countries). The work of formulating international standards is usually completed by the technical committee of the country. Each member body has the right to participate in the work of the committee if it is interested in the standard items confirmed by the basic technical committee, and has the right to participate in the work of the committee, and has the right to participate in the work of the committee, and has the right to participate in the work of the international groups related to 15)! (Official or unofficial) can also compete for related work. In the field of technical standards, IS> maintains a cooperative relationship with the International Electrotechnical Commission (IEC). Draft international standards proposed by technical committees are not submitted to the member bodies for voting. International standards must obtain the consent of the member bodies of the current member body before they can be formally adopted. National standard TS () 11G2R was formulated by the Printing Technology Committee of the People's Republic of China. 1 Scope
National Standard of the People's Republic of China
Printing Technology
Determination of acid resistance of printed products and printing inks
Graphie technology Prints and printing inks-Determining the acid resistance of nf prints tn This standard specifies the method for testing the acid resistance of printed products according to CH/T18724-2002 [SO1628:1995]. This standard applies to all printing methods and substrates, such as paper, paperboard, plastic and metal (metal foil and metal substrate). 2. Referenced standards The following standards are included in the following documents and constitute the provisions of this standard through reference in this standard. When this standard is issued, the versions shown are valid: All standards are subject to revision. Parties using these standards should explore the possibility of using the latest versions of the following standards. TSO105-A03;1993 Textiles - Test for color memory width - Part A3: Gray scale for evaluating the color of a sheet 3 Definitions This standard uses the following definitions. 3.1 Printed products
In a certain period of time, the printing product can withstand a certain acid transfer to a certain score (according to the seat), Note 1: Before the product is under the test condition, there is no obvious cavitation in the waist, which can be used to judge the acid resistance of the whole printing product. 4 Principles
The printing product is pressed between two sheets of pre-printed with a specific solvent. The single and high-grade acid resistance evaluation is carried out by the printing head. The most important thing is to make the printing product more resistant to rust. The sample is also affected by the oil-based printing material.
5 Instruments and reagents
5.1 White paper: chemical grade, flat and soft surface, filter paper strip size is 60mm×90m: 5.2 Reference printing and test printing:
5. 3 Test month.
54 Standard board: CXsmm
55 Evaluation color gray orange ruler g ISC) 1AU3). 5.6 Water adjustment.
5.71kg weight.
Approved by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China on 200205-21 and implemented on 2003-01-01
5.8 Box: Cable light standard (601.2). 6 Test conditions
The test is carried out at the standard temperature,
CB/T 16724-2002
Wire: According to the general experimental case, the test group can be selected as 23C or 27. If the product is false, the environment of the product will be determined and tested in 7 months. Test procedure
Completely immerse two test filter papers in the test acid solution, then take them out and separate them until there is no acid. Scan one of the filter papers flat on the glass plate, place the 20mmX50mm sample on it, use the second filter paper on the sample to be tested, and then press it on top. The finished glass test plate needs to be placed in a small container or a small container, and the sample is pressed on the 1R object. bZxz.net
After the test prints are dyed for a certain period of time, the test prints are placed in a hot box (32=2) for 30m.
The paper is naturally dried in the air, and the test prints are compared with the test prints after the test. The test results are summarized as follows:
1) The test prints have obvious changes in appearance and have good durability. 2》Test print details are not set, the group oversteps the level of the single need to be evaluated according to the dyeing type, if the dyeing process reaches the required screen size (see IS): 53-A3) above level 1, it can be determined that the print sample is acid resistant S test board
system or according to the following:
》Should be:
6) Test card:
c) Test citric acid volume fraction (concentration); d) Room temperature and test liquid humidity
e) Dyeing time
Check the print sample color is changed, if the color changes: the degree of change. Color changes caused by substrates. Should be cleared
B) Whether the defects in contact with the test sample are not dyed! Eliminate the changes in the entire test process. Note 5: In addition to the tape, some products are not sufficient, the thermal conductivity of the product can be used for multiple printing products, slow soft pressure, and use the ruler for evaluation. GB/I18724-2002 (selected) The recommended wake-up solution A is a simple test of the volume of the barrier (concentration) and the time of pregnancy. Note 6: The acid volume fraction (m/s) and the time-dependent effects of the proposed method should be used in the absence of other factors and conditions. Table 1: Trinn's alternatives to irritants and common safety products. Products from Jiangnan, 2nd Century
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