CY/T 194-2019 in English
VALIDProcess control requirements and test methods for cold foil transfer
- Issued on:2019-11-28
- Implemented on:2020-01-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$243.00
| Standard No: | CY/T 194-2019 |
| Document status: | VALID |
| Title in English: | Process control requirements and test methods for cold foil transfer |
| Title in Chinese: | 冷烫印过程控制要求及检验方法 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2019-11-28 |
| Implemented on: | 2020-01-01 |
| Professional Classification: | CY-Publication |
| Related Topics: | process control
cy cy/t+ cy/t cy/t 35 cy/t 79 cy/copy cy/t 7.3 Process Tester cy/t 40 Refrigerator control process control ingredients cy/t 5 Refrigeration piece inspection Method detection limit detection and calculation process |
Introduction
Analysis of the core content of the standard
CY/T 194-2019 is the first industry standard in my country specifically formulated for cold stamping technology, which systematically regulates the technical requirements for the entire process from materials, processes to finished products. This standard is applicable to paper and paper composite materials, and other materials can be used as a reference.
Comparison of key technical indicators
| Test items | Quality requirements | Test methods | Instrument accuracy |
|---|---|---|---|
| Cold foil surface hardness | (95±2) HA | Appendix CA type Shore hardness tester | JJG 304 |
| Aluminum layer thickness | ±3.0 nm | GB/T 15717 | 1nm graduation value |
| Adhesive fineness | ≤20 μm | GB/T 6753.1 | Fineness of Grinding Instrument |
| Overprint Error | ≤0.2 mm | Scale Magnifier | 0.1mm Graduation Value |
Key Points of Process Control
Environmental Parameters
The standard requires that the offset/flexographic printing environment temperature be controlled at (23±5)℃, the humidity be (60±10)%, and the UV curing power be 80-150 W/cm (wavelength 280-420nm).
Key process differences
- Offset printing process: Fountain solution pH 4.6-5.8, conductivity 800-2000 μS/cm
- Flexo printing process: 100-250 lines/cm anilox roller is required to control the amount of glue
Common defect judgment
The standard clearly defines 7 types of quality defects:
- Color flooding: Uneven color of functional coating
- Strong lines: Raised ridges around the circumference of the coil (see Appendix B for illustration)
- Orange peel: Uneven surface
There shall be no more than 2 defects with a diameter greater than 0.5mm within every 100mm×100mm area.
Implementation Suggestions
Enterprise Application Path
It is recommended to implement the standards in three stages:
| Preparation stage | Establish a material acceptance database, and configure special equipment such as A/D type Shore hardness tester and UV energy meter |
| Trial operation stage | Focus on monitoring the solid content of adhesive (≥95%) and wetting tension (≥3.8×10⁻² N/m) |
| Full implementation | Establish a process parameter dashboard, and regularly test the film surface hardness (Appendix C) and peel force (GB/T 7122) |
Technology Evolution Direction
The standard reflects the three major development trends of cold stamping technology:
- Environmental protection: room temperature process replaces hot stamping
- Precision: overprint error requirement ≤0.2mm
- Standardization: for the first time, the color difference index of holographic/non-holographic cold stamping foil is clarified
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