GB/T 1912-2018 in English

Standard Development Background and Technology Evolution Analysis

GB/T 1912—2018 Dictionary Paper is a comprehensive revision of the 2007 version, mainly targeting the changes in the printing industry's demand for high-quality paper. The new standard cancels the quality grade classification, introduces more refined technical indicators and expands the quantitative specification range (22.0~40.0 g/m²) to meet the higher requirements of modern printing technology for paper performance.

Standard Framework Comparison and Technical Indicator Detailed Explanation

Compared with the old version, GB/T 1912—2018 significantly increased the technical requirements for D65 brightness and opacity. For example, the D65 brightness of ordinary dictionary paper has been increased from 79.0 to 80.0, and the opacity index has been adjusted accordingly under different quantitative conditions.

Test Methods and Quality Control

The standard requires the use of professional instruments such as smoothness tester (Buick method) and blue light diffuse reflection factor tester for testing. The following key points should be noted during implementation: the quantitative measurement deviation range is ±1.5%, the surface strength test uses the wax stick method or IGT printing tester to ensure compliance with GB/T 22365-2008 requirements.

Implementation Recommendations and Industry Impact

• Manufacturers: Establish a sound quality management system to ensure that every step from raw material procurement to finished product delivery meets standard requirements.
• Testing agency: Equipped with advanced instruments and equipment, such as D65 brightness meter and dust tester, to ensure the accuracy of test data.
• User feedback: It is recommended that enterprises choose the appropriate type of dictionary paper (ordinary or micro-coated) according to actual printing needs to optimize printing effects and cost control.