JC/T 632-2002 English PDF (JC/T632-2002)

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JC/T 632-2002: Road vehicles. Safety glazing materials. Terminology
JC/T 632-2002
JC
BUILDING MATERIAL INDUSTRY STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 81.040
Q 34
Replacing JC/T 632-1996
Road vehicle - Safety glazing materials - Terminology
(ISO 3536 Road vehicles - Safety glazing materials - Vocabulary, NEQ)
ISSUED ON: DECEMBER 09, 2002
IMPLEMENTED ON: MARCH 01, 2003
Issued by: State Economic and Trade Commission of PRC
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Terms ... 4
Appendix A (Informative) Index in Chinese ... 14
Appendix B (Informative) Index in English ... 15
Road vehicle - Safety glazing materials - Terminology
1 Scope
This standard specifies the terms related to automotive safety glazing material.
This standard applies to automotive safety glazing material. It is also applicable to
safety glazing material for other road vehicles.
2 Terms
2.1 Types
2.1.1 Safety glazing material
Products made of inorganic and organic materials or inorganic materials through
compounding or treatment. When used in vehicles, these products can minimize the
possibility of personal injury and shall have special requirements such as vision,
strength, wear resistance.
2.1.2 Glass-plastic safety glazing material
Glass material made of one or more layers of glass and one or more layers of plastic
materials. After installation, the side facing the passenger is a plastic layer.
2.1.3 Plastic safety glazing material
Safety glazing material with one or more organic polymers as basic components, which
can be cast in certain stages of manufacturing or processing; the final product is solid.
2.1.4 Toughened glass
The mechanical strength of single-layer glass is improved after special treatment, the
state of its fragments can be controlled after breaking.
2.1.5 Zone-tempered glass
A tempered windshield glass with controlled tempering degree in different zones, which
can ensure a certain degree of visibility within the vision area, once it is broken.
2.1.6 Laminated safety glazing material
A composite glass made of two or more layers of glass bonded with one or more
interlayers.
2.1.7 Treated laminated safety glazing material
Laminated glass in which at least one layer of glass has been specially treated to
improve its mechanical strength and the state of the fragments after breaking is
controlled.
2.1.8 Electrically-heated safety glazing material
A safety glazing material in which electric heating elements are sintered to the glass or
combined to the glass by special processes. It can defog and defrost when powered on.
2.1.9 Insulation safety glazing material
A glass assembly in which two or more pieces of safety glazing material are separated
by a uniform gap and permanently assembled together, which can provide sound
insulation and heat insulation.
2.1.10 Bullet-resisting glass
Special laminated glass with specific blocking ability against bullets.
2.1.11 Enhanced reflecting safety glazing material
Safety glazing material with a reflective film, which has a refractive index greater than
that of the glass itself.
2.1.12 Head-up display windscreen
The windscreen that is partially coated in the windshield view area and reflects the
instrument display to the front through an optical system.
2.2 Application parts
2.2.1 Windscreen (windshield)
Safety glazing material used to block the wind at the front of the car and provide a clear
view for the driver.
2.2.2 Backlight (backlite)
Safety glazing material for the rear window of the car.
2.2.3 Side window
Safety glazing material used for windows and doors on both sides of the car.
2.2.4 Vision area
and transportation.
2.4.3 String
Clear and thin lines on the glass.
2.4.4 Wave
Lines on the glass surface that are consistent with the pulling direction.
2.4.5 Stone
Solid inclusions in glass, including raw materials, refractory materials, crystallization,
etc., which are generally un-melted materials or product particles. Smaller stones are
called sand.
2.4.6 Knot
A non-uniform defect in the glass plate in the form of transparent nodules.
2.4.7 Weathering
A weathering phenomenon after the glass surface is eroded by the atmospheric
environment.
2.4.8 Mold mark
The mark left by the mold on the glass surface during the forming process of curved
glass.
2.4.9 Tong mark
The mark of the hanger on the edge of toughened glass.
2.4.10 Bloom
The tin diffusion layer on the lower surface of float glass forms micro cracks on the
surface after heat treatment, which produces interference colors under light.
2.4.11 Stress pattern (monttled pattern)
The optical effect caused by the birefringence of glass, due to internal stress under
polarized or partially polarized light irradiation.
2.4.12 Boil
The gas inclusions in the bonding layer material or between the glass and the bonding
layer.
2.4.13 Interlayer dirt
The impurities sandwiched in the laminated glass.
2.4.14 Lint
The short fibers of fabric sandwiched in the bonding layer of laminated glass.
2.4.15 Mismatch
The misalignment of the edges of two sheets of glass during lamination.
2.4.16 Delamination
The separation of one or both layers of glass from the adhesive layer in laminated glass.
2.4.17 Discoloration
The yellowing or opacity of the adhesive layer in laminated glass.
2.4.18 Chip
The shell-shaped defect on the edge of the glass.
2.4.19 Broken corner
The defect of the corner part of the glass plate, which has a radius of curvature not
greater than 5 mm.
2.4.20 Profiled edge
The process of processing the edge of the glass into an arc shape.
2.4.21 Polished edge
The finely processed glass edge, which is smooth and transparent, whose gloss is very
close to the glass surface.
2.4.22 Finely ground edge
The finely processed glass edge, which has a smooth feel but is not transparent.
2.4.23 Coarsely-ground edge
The rough-processed edge of glass, which feels rough but will not cause damage.
2.4.24 Shiner
The un-chamfered or unground part of the glass edge after processing.
changes without deterioration.
2.5.14 Resistance-to-bake test
A test to determine whether the insulation glass structure can withstand high
temperatures for a period of time.
2.5.15 Resistance-to-simulated-weathering test
A test to determine whether safety glazing material with at least one side made of plastic
can withstand exposure to simulated weather conditions.
2.5.16 Resistance-to-chemicals test
A test to determine whether safety glazing material with a plastic inner surface
undergoes significant quality changes when exposed to chemicals.
2.5.17 Resistance-to-abrasion test
A test to determine whether safety glazing material has a certain minimum resistance
to abrasion, whose value is expressed as haze.
2.5.18 Head-form test
A test to determine the ultimate strength and adhesion of safety glazing material under
blunt impact.
2.5.19 Resistance-to-penetration test
A test to determine the resistance of safety glazing material to 2260g steel ball.
2.5.20 Ball-impact test
A test to determine whether safety glazing material has a certain minimum strength or
adhesion when impacted by a 227g steel ball.
2.5.21 Fragmentation
A test to determine the degree of damage caused by fragments of safety glazing material
when it is broken.
2.5.22 Dart test
A test to determine whether safety glazing material has a certain minimum strength and
res...