Detail of GB 9656-2021

Introduction of GB 9656-2021

Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative. This standard is developed in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB 9656-2003 Safety glazing materials for road vehicles. In addition to editorial changes, the following main technical changes have been made with respect to GB 9656-2003: ——Terms and definitions have been added (see Clause 3); ——The content of rigid plastic glazing pane has been added (see 3.8, 4.1, 5.1.1, 5.3.3.3, 5.4.2, 5.4.3, 5.5.1, 5.5.4, 5.5.6, 6.3.1, 6.3.3, 6.5.3, Annex B); ——The requirements for head-up display windscreen have been added (see 3.12, 5.3.1, 5.3.3.1 and 6.2.1); ——The general for test methods has been added (see 6.1); ——The requirements for resistance-to-abrasion test methods of thick laminated safety glass have been added (see 6.5.1); ——The content of safety glazing faced with plastic material has been added (see Clause 2, 3.9, 4.1, 5.1.2, 5.4.2, 5.4.3, 5.5.1, 5.5.3, 5.5.7, 6.4.2, 6.4.3, 6.5.1, 6.5.3 and Annex B); ——The classification has been modified (see Clause 4 herein and Clause 3 in 2003 edition); ——The division of test areas of windscreen has been modified (see Annex A hereto and Annex A to 2003 edition); ——The description on non-inspection areas has been modified (see 5.2.2 and 5.2.3 herein and 5.3 and 5.4 in 2003 edition); ——The requirements for sample status after impact resistance of laminated safety glass other than windscreen have been modified (see 5.3.3.3 herein and 5.12.2 in 2003 edition); ——The requirements for resistance to fire flame have been modified (see 5.4.2 herein and 5.15 in 2003 edition); ——The classification of main technical requirements and general technical requirements has been deleted (see 4.2 in 2003 edition); ——The requirements for color recognition have been deleted (5.5 and 7.5 in 2003 edition); ——The content related to tempered safety glass in areas has been deleted (see 3.1, 3.2.1, 5.1, 5.2, 5.3, 5.4, 5.5, 5.10, 5.13, 7.13.1 and note in 8.3.1.6 in 2003 edition); ——The head form impact test with test piece as sample of laminated safety glass and glass-plastic safety glazing material other than windscreen has been deleted (see 5.10.2 in 2003 edition); ——The general technical requirements have been deleted (see Clause 6 in 2003 edition); ——The inspection rules have been deleted (see Clause 8 in 2003 edition); ——The content of packaging, marking, transportation and storage has been deleted (see Clause 9 in 2003 edition); ——All content related to the quantity and determination of inspected samples in 7.2~7.14 of the original standard have been merged into Annex B. This standard was proposed by and is under the jurisdiction of the Ministry of Industry and Information Technology of the People's Republic of China. The previous editions of this standard are as follow: ——GB 9656-1988, GB 9656-1996 and GB 9656-2003. Safety technical specification for glazing materials used in power-driven vehicles 1 Scope This standard specifies the terms and definitions, classification, technical requirements, test methods and judgment rules for the safety characteristics of glazing materials used in power-driven vehicles. This standard is applicable to glazing materials used in power-driven vehicles, including Categories M, N and O vehicles, Category L vehicles with cab, and special vehicles for agriculture and forestry. This standard is not applicable to glazing materials used for lighting and signaling devices and instrument panels of power-driven vehicles. Note: See GB/T 15089 for classification of Categories L, M, N and O vehicles. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 5137.1 Test methods of safety glazing materials used on road vehicles — Part 1: Mechanical properties tests GB/T 5137.2 Test methods of safety glazing materials used on road vehicles — Part 2: Optical properties tests GB/T 5137.3 Test methods of safety glazing materials used on road vehicles — Part 3: Radiation, high temperature, humidity, fire and simulated weathering resistance tests GB/T 5137.5 Test methods of safety glazing materials used on road vehicles — Part 5: Resistant-to-chemical and resistant-to-temperature changes test GB/T 31849-2015 Film mounted motor vehicle glass QC/T 1119-2019 Road vehicles — Safety glazing materials-Vocabulary 3 Terms and definitions For the purposes of this document, the terms and definitions given in QC/T 1119-2019 and the following apply. For the convenience of application, some terms and definitions specified in QC/T 1119-2019 are re-listed below. 3.1 power-driven vehicle power unit-driven or towed wheeled vehicle which, running on roads, is intended for carrying passengers or goods or for undertaking special jobs 3.2 safety glazing material glazing material consisting of organic and/or inorganic materials so constructed or treated to minimize the likelihood of injury to persons as a result of contact with these safety glazing materials when used in a vehicle, and which complies with specified requirements for visibility, strength, and durability [QB/T 1119-2019, Definition 2.1.1] 3.3 glazing materials used in power-driven vehicles safety glazing materials used in power-driven vehicles for providing field of view and lighting, separating compartment space or fulfilling other functions for driver and passengers 3.4 tempered safety glass glazing material consisting of a single layer of glass which has been subjected to special treatment to increase its mechanical strength and/or to condition its fragmentation after shattering [QB/T 1119-2019, Definition 2.1.4] 3.5 laminated safety glass glazing material consisting of two or more layers of glass held together by one or more interlayers [QB/T 1119-2019, Definition 2.1.5] 3.6 glass-plastic safety glazing material composite glazing material that consists of one or more layers of inorganic materials and organic materials, and the side facing passengers is made of organic materials [QB/T 1119-2019, Definition 2.1.2] 3.7 insulating safety glazing unit glazing unit that is any combination of tempered safety glass, laminated safety glass and glass-plastic safety glazing material, and is evenly separated by spacer bars, with the periphery well adhered and sealed 3.8 rigid plastic glazing pane organic polymer material that can keep the structural rigidity within the intended range of use [QB/T 1119-2019, Definition 2.1.3.1] 3.9 safety glazing faced with plastic material glass made by sticking plastic film on the inner surface of tempered safety glass, laminated safety glass or insulating safety glazing unit consisting of tempered safety glass and/or laminated safety glass 3.10 windscreen glazing in front of the vehicle through which the driver views the road ahead [QB/T 1119-2019, Definition 2.2.1] 3.11 glass panes other than windscreen glass in any part other than the windscreen Note: glass panes other than windscreen include but not limited to skylight, side window, rear window, compartment partition or partition window, window panes of double-decker bus located in all parts of the upper compartment, and upper window panes of single-decker bus at the forefront not intended for providing visual field for the driver 3.12 head-up display windscreen HUD windscreen windscreen that can provide an image of information content in front of the driver through the optical system [QB/T 119-2019, Definition 2.1.9] 3.13 driver’s vision area area on the glass panes that enable the driver to fully observe the devices for indirect vision required by GB 15084 and obtain the required vision, if necessary 3.14 head injury criteria HIC characteristic value representing the degree of skull injury, which is generally evaluated by simulating the vertical impact of blunt object on safety glazing material [QB/T 1119-2019, Definition 2.5.8] 3.15 R point design point specified by the vehicle manufacturer for each seating position 3.16 centerline of vehicle straight line on the top plan of the vehicle that meets the following requirements: a) For vehicles with more than four wheels, a vertical bisector passing through the connecting line of the design center point of the left and right front wheels and the rear wheels respectively; b) For three-wheeled vehicles, a straight line connecting the center points of the line connecting the design center point of the left and right rear (front) wheels and the design center point of the front (rear) wheels; c) For vehicles with tracks, a straight line equidistant from the centerline of the left and right tracks. 3.17 median plane of vehicle vertical plane containing the centerline of vehicle 3.18 X axis axis that passes through the driver's seat R point and is parallel to the median plane of vehicle in the horizontal plane where the R point is located, consisting of +X as the rear direction of the vehicle and -X as the front direction 3.19 Y axis axis that passes through the driver's seat R point and is vertical to X axis in the horizontal plane where the R point is located, consisting of +Y as the right driving direction of the vehicle and -Y as the left driving direction 3.20 Z axis axis that passes through the driver's seat R point and is vertical to X axis and Y axis in the vertical plane where the R point is located, consisting of +Z as the upward direction of the vehicle and -Z as the downward direction 4 Classification 4.1 Glazing materials used in power-driven vehicles are classified into laminated safety glass, tempered safety glass, insulating safety glazing unit, glass-plastic safety glazing material, rigid plastic glazing pane and safety glazing faced with plastic material by production and processing technology and/or material. 4.2 Glazing materials used in power-driven vehicles are classified into windscreen and glass panes other than windscreen by application part. 5 Technical requirements 5.1 General 5.1.1 Laminated safety glass, glass-plastic safety glazing material and tempered safety glass are applicable to any part of power-driven vehicles. When tempered safety glass is used for windscreen, it is only applicable to vehicles with design speed of less than 40 km/h; insulating safety glazing unit and rigid plastic glazing pane are applicable to any part other than windscreen. 5.1.2 Laminated safety glass, tempered safety glass or insulating safety glazing unit used for substrate of safety glazing faced with plastic material shall meet the corresponding clauses of this standard. 5.1.3 The safety technical requirements for glazing materials used in power-driven vehicles include safety requirements for field of view, strength, damage and environmental durability. 5.2 Safety requirements for field of view 5.2.1 Luminous transmittance 5.2.1.1 The luminous transmittance of windscreen shall meet those specified in Table 1. The luminous transmittance of glass panes other than windscreen for the driver's division area shall not be less than 70%. 5.2.1.2 The luminous transmittance of glass panes other than windscreen (except for the driver's vision area) of interurban buses, touring buses, buses with passenger standing areas, school buses and passenger cars with middle engine and aspect ratio of 0.9 or less shall not be less than 50%.

Contents of GB 9656-2021

Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Classification 5 Technical requirements 5.1 General 5.2 Safety requirements for field of view 5.2.1 Luminous transmittance 5.2.2 Secondary image separation 5.2.3 Optical distortion 5.3 Safety requirements for strength 5.3.1 Performance of head form impact 5.3.2 Penetration resistance 5.3.3 Impact resistance 5.4 Safety requirements for damage 5.4.1 Fragmentation 5.4.2 Resistance to fire flame 5.4.3 Resistance to chemical reagents 5.5 Safety requirements for environmental durability 5.5.1 Resistance to abrasion 5.5.2 High temperature resistance 5.5.3 Resistance to radiation 5.5.4 Resistance to humidity 5.5.5 Resistance to temperature change 5.5.6 Simulated weathering resistance 5.5.7 Volatile organic compounds 6 Test methods 6.1 General 6.2 Safety performance test with respect to field of view 6.2.1 Luminous transmittance 6.2.2 Optical distortion 6.2.3 Secondary image separation 6.3 Safety performance test with respect to strength 6.3.1 Performance of head form impact 6.3.2 Penetration resistance 6.3.3 Impact resistance 6.4 Safety performance test with respect to damage 6.4.1 Fragmentation 6.4.2 Resistance to fire flame 6.4.3 Resistance to chemical reagents 6.5 Safety performance test with respect to environmental durability 6.5.1 Resistance to abrasion 6.5.2 High temperature resistance 6.5.3 Resistance to radiation 6.5.4 Resistance to humidity 6.5.5 Resistance to temperature change 6.5.6 Simulated weathering resistance 6.5.7 Volatile organic compounds 7 Judgment rules 7.1 Judgment for single item 7.2 Comprehensive judgment Annex A (Normative) Determination of windscreen test area Annex B (normative) Single item judgment rules for inspection items Bibliography