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CYT210-2020: (Corrugated board flexographic printing process control requirements)
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| CY/T 210-2020 | English | 179 |
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(Corrugated board flexographic printing process control requirements)
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CY/T 210-2020
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Basic data | Standard ID | CY/T 210-2020 (CY/T210-2020) | | Description (Translated English) | (Corrugated board flexographic printing process control requirements) | | Sector / Industry | Press & Publication Industry Standard (Recommended) | | Classification of Chinese Standard | A17 | | Classification of International Standard | 37.100.01 | | Word Count Estimation | 7,766 | | Date of Issue | 2020-11-16 | | Date of Implementation | 2021-02-01 | | Regulation (derived from) | Guoxin Departure Letter (2020) No. 249 | | Issuing agency(ies) | State Press and Publication Administration | CYT210-2020: (Corrugated board flexographic printing process control requirements)---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Process control requirements of flexographic printing for corrugated paper board
2020-11-16 released
2021-02-01 implementation
Press and Publication Industry Standards of the People's Republic of China
Issued by the National Press and Publication Administration of the People's Republic of China
Corrugated board flexographic printing process control requirements
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
Please note that some of the contents of this document may involve patents. Publication of this document
The agency is not responsible for identifying these patents.
This standard was proposed and managed by the National Printing Standardization Technical Committee (SAC/TC 170).
Drafting organizations of this standard. Zhengzhou Huaying Packaging Co., Ltd., Beijing Institute of Graphic Communication, and Shenren Packaging and Printing Co., Ltd., Renhuai City, Guizhou Province
Responsible company, Zhejiang Dashengda Packaging Co., Ltd., Zhejiang Shangfeng Packaging New Material Co., Ltd., Zhuzhou Sanxin Packaging Technology Co., Ltd.,
Ningxia Xia Ji Box Packaging Co., Ltd., Bozhou Yifeng Boda Environmental Packaging Material Co., Ltd., Shaanxi Pan-standard Software Co., Ltd., Gu Xin (Fu
Construction) Data Service Co., Ltd., Zhongrou Gravure Technology Service (Beijing) Center, Guangdong Yingde Digital Technology Co., Ltd., Shaanxi Juzhongzhi
German Electronic Technology Co., Ltd., Jinhua Wangyuan Electronic Technology Co., Ltd., Jiangmen One Two Three Standardization Technical Service Co., Ltd., Shaanxi Master
Enda Data Technology Co., Ltd., Xi'an Xinlinda Digital Technology Co., Ltd., Flexographic Printing Branch of China Printing Technology Association.
The main drafters of this standard. Rao Fei, Cao Guorong, Zhang Dandan, Yuan Mingyu, Qu Qixuan, Li Longping, Liu Weicheng, Wang Jianjun, Xu Wencai,
Zhang Lizheng, Tian Fulin, Zhang Tao, Zhang Yun, Wang Zhenping, Feng Mengke, Wang Zhesi, Zhang Baoping, Gao Gao, Lei Chuze, Deng Xiaolin.
Foreword
1 Scope
This standard specifies the terms and definitions, technical requirements and inspection methods of the corrugated board flexo water-based ink printing process.
This standard applies to the process control of water-based ink corrugated board flexographic printing.
This standard does not apply to the pre-printing of corrugated cardboard flexographic plates.
2 Normative references
The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this document.
For undated reference documents, the latest version (including all amendments) is applicable to this document.
GB/T 1540-2002 Determination of Water Absorption of Paper and Paperboard (Kebo Method)
GB/T 6544-2008 corrugated cardboard
GB/T 6545 Method for determination of bursting strength of corrugated board
GB/T 6546 Method for measuring the edge compressive strength of corrugated cardboard
GB/T 6548 Determination of the adhesive strength of corrugated board
GB/T 12911 Test Method for Ink Absorption of Paper and Board
GB/T 17934.6-2014 Printing technology mesh color separation film, proof sheet and printed product process control part 6.
Flexographic printing
GB/T 19437.Spectral measurement and chromaticity calculation of printed images in printing technology
GB/T 23649 Optical, geometric and metrological requirements for reflection densitometers for printing technology process control printing
CY/T 156-2017 Process control requirements and inspection methods of printed matter laminating corrugated board
CY/T 222-2020 Process control requirements and inspection methods for flexographic plate making
HG/T 4009-2008 Flexible resin plate for corrugated board printing
QB/T 2825-2017 flexographic water-based ink
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
Warpage
The degree to which corrugated cardboard is curved and uneven when placed horizontally.
4 Technical requirements
4.1 Materials
4.1.1 Corrugated cardboard
4.1.1.1 Appearance
The surface should be smooth, consistent in color, free of holes, cracks, wrinkles, perforation, foreign matter, and dirt.
Corrugated board flexographic printing process control requirements
4.1.1.2 Bursting strength
Bursting strength should meet the requirements of qualified products in Table 1 of GB/T 6544-2008.
4.1.1.3 Edge compression strength
The edge pressure strength should meet the requirements of qualified products in Table 1 of GB/T 6544-2008.
4.1.1.4 Adhesion strength
The bonding strength should meet the requirements of 5.2.2 in GB/T 6544-2008.
4.1.1.5 Water absorption
The water absorption of the front side of the cardboard should not be more than 60 g/m2; the water absorption of the front side of the coated paper should not be more than 40 g/m2.
4.1.1.6 Ink absorption
The ink absorption of the front side of the cardboard should not be less than 17%; the ink absorption of the front side of the coated paper should not be less than 30%.
4.1.1.7 Warpage
There should be no warpage greater than 20 mm on a single piece of corrugated cardboard with a length of 1 m.
4.1.2 Water-based ink
It shall meet the requirements of water-based ink for paper flexo printing in 3.1 Table 1 of QB/T 2825-2017.
4.1.3 Flexographic printing plate
4.1.3.1 Box board
The apparent quality should meet the requirements of 3.3 in HG/T 4009-2008, the hardness of the flexographic plate, imaging performance, ink absorption, and ink adhesion
It should meet the requirements of HG/T 4009-2008.
4.1.3.2 Coated paper
It shall meet the requirements of 10 in CY/T 222-2020.
4.2 Process requirements
4.2.1 The working environment should be clean and tidy, the temperature should be 10 ℃ ~ 35 ℃, and the humidity should be RH 10% ~ 75%.
4.2.2 The paper feed position tolerance should be ±1.4 mm, and the paper feed skew tolerance should be ±1.2 mm.
4.2.3 The selection of anilox rollers should meet the requirements of Table 1.
4.2.4 Overprint accuracy
The overprint deviation of halftone printing should be no more than 0.3 mm, and the overprint deviation of solid color block printing should be no more than 0.7 mm.
4.2.5 Increased outlets
The dot increase at 50% gradation value should not exceed 15%.
4.2.6 Tone Copy Range
Within the range of 5% to 90% tone reproduction, the dots should be transferred to the printed product stably and consistently.
4.2.7 Density value
The control range of the solid reflection density value of the printed primary colors should meet the requirements of the corrugated cardboard in Appendix C of GB/T 17934.6-2014.
5 Inspection method
5.1 Corrugated cardboard
5.1.1 Appearance
Visual inspection.
5.1.2 Bursting strength
Test according to GB/T 6545.
5.1.3 Edge pressure strength
Test according to GB/T 6546.
5.1.4 Adhesive strength
Test according to GB/T 6548 regulations.
5.1.5 Warpage
Test according to the method specified in Appendix D of CY/T 156-2017.
5.1.6 Water absorption of paper
Test according to the method specified in GB/T 1540.
5.1.7 Ink absorption of paper
Test according to the method specified in GB/T 12911.
5.2 Water-based ink
It should be tested in accordance with QB/T 2825-2017.
5.3 Flexographic printing plate
5.3.1 Box board
The inspection shall be carried out in accordance with the corresponding method of HG/T 4009-2008.
5.3.2 Coated paper
The detection should be carried out in accordance with the corresponding method in CY/T 222-2020.
5.4 Process conditions
5.4.1 Temperature and humidity
Use a thermometer and hygrometer that meets the range for measurement.
5.4.2 Tolerance of paper feeding position
Continuous feeding and printing 100 sheets, using a vernier caliper with a graduation of 0.02 mm to detect and record the printing in the middle of 100 sheets
The distance from the center point of the crosshair to the leading edge of the paper, and the difference between the maximum distance and the minimum distance is used as the paper feeding position deviation.
5.4.3 Tolerance of feed skew
Continuous feeding and printing of 100 sheets, using a vernier caliper with an graduation of 0.02 mm to detect and record the printing on both ends of the 100 sheets
The distance between the center point of the cross line and the leading edge of the paper, respectively calculate the numerical difference of the measured distance between the two ends of the same paper, and use the largest numerical difference as
The paper feed is skewed.
5.4.4 Anilox roller
Compare the factory inspection report of the anilox roller to check the number of lines and the ink capacity of the anilox roller.
5.4.5 Overprint accuracy
Use a magnifying glass with a division value of 0.02 mm to check the overprint cross line, check the overprint error of any two colors, and use the maximum value as the print
Overprint error of the sheet.
5.4.6 Increase in outlets
Use a spectrophotometer that meets the requirements of GB/T 19437 for measurement.
5.4.7 Tone Copy Range
Use a 10x magnifying glass to check the reproduction of 5% and 90% of the dots on the measurement and control strip.
5.4.8 Density value
Use a reflection densitometer that meets the requirements of GB/T 23649 for testing.
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