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GB 9962-1999: Laminated glass
GB 9962-1999
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 81.040.20
Q 34
Laminated glass
夹层玻璃
Replaced (by GB 15763.3-2009)
ISSUED ON. SEPTEMBER 1, 1999
IMPLEMENTED ON. AUGUST 1, 2000
Issued by. State Bureau of Quality and Technical Supervision
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative references ... 4
3 Definitions ... 5
4 Classification ... 5
5 Requirements ... 6
6 Test methods ... 12
7 Inspection rules ... 16
8 Packaging, symbols, transportation and storage ... 18
Appendix A (Normative) Falling ball impact sample holder ... 19
Appendix B (Normative) Grape-shot bag impact test devices ... 20
Foreword
This Standard is an equivalent standard of Japanese Standard JIS R3205.1989
Laminated glass in technical contents; and it makes reference to ANSI
Z97.1.1984 Safety glazing materials used in buildings - Safety performance
specifications and methods of test, ISO/DIS 12543-1~12543-6.1997 Glass in
building - Laminated glass and laminated safety glass, AS/NZS 2208.1996
Safety glazing materials in buildings, etc.
This Standard is the first revision of the 1988 edition. The revised contents are
as follows.
ADD the laminated glass of category II on the basis of reserving the original
laminated glass of categories I and III. ADD the following four indicators. visible
light transmittance, visible light reflectance, moisture resistance and wind
pressure resistance. Except the moisture resistance, the other three items are
recommended indicators. The impact resistance is renamed falling ball impact
stripping performance. The penetration resistance is renamed grape-shot bag
impact performance. In the meantime, MAKE appropriate modifications to the
technical requirements and test methods of some test items.
In the revised standard, the radiation resistance, heat resistance and falling ball
impact stripping performance are equivalent to the Japanese Standard JIS
R3205; the grape-shot bag impact test adopts the requirements of the American
Standard ANSI Z97.1; the moisture resistance test is equivalent to ISO/DIS
12543-4.
The Appendixes A and B of this Standard are normative appendixes.
This Standard replaces GB 9962-1988 from the date of implementation.
This Standard was proposed by State Bureau of Building Materials Industry.
This Standard shall be under the jurisdiction of the Glass Science Research
Institute of China Building Materials Academy.
Drafting organization of this Standard. Glass Science Research Institute of
China Building Materials Academy.
Main drafters of this Standard. Chen Zhengke, Han Song, Wang Ruyang, Wang
Le and Hu Yue.
Laminated glass
1 Scope
This Standard specifies the classification, requirements and test methods for
laminated glass.
This Standard is applicable to the laminated glass used in buildings. Other
occasions can also use this Standard as reference. This Standard is not
applicable to the laminated glass used in automobiles and other road vehicles.
2 Normative references
The provisions in the following standards become the provisions of this
Standard through reference in this Standard. At time of publication, the editions
indicated were valid. All standards are subject to revision, and parties who
reach an agreement based on this Standard are encouraged to investigate the
possibility of applying the latest editions of the standards indicated below.
GB/T 308-1989 Rolling bearings - Steel balls (neq ISO 3290.1975)
GB/T 531-1992 Rubber, vulcanized - Determination of shore A hardness
(neq ISO 7619.1986)
GB/T 1216-1985 External micrometer (neq ISO 3611.1978)
GB/T 5137.2-1996 Road vehicles - Safety glasses - Test methods for optical
properties (eqv ISO/DIS 3538.1992)
GB/T 5137.3-1996 Road vehicles - Safety glazing materials - Test methods
for resistance to radiation, high temperature, humidity, fire and simulated
weathering (eqv ISO 3917.1992)
GB/T 9963-1998 Tempered glass (eqv JIS R 3206.1989)
GB 11614-1999 Float glass
GB 17841-1999 Tempered and heat-strengthened glass used in curtain walls
(neq JIS R 3222.1996)
JC 433-1991(1996) Wired glass
JC/T 511-1993 Patterned glass
JC/T 512-1993 Packaging of automobile safety glass
JC 536-1994 Heat absorbing glass
JC/T 677-1997 Test method to model wind pressure for architectural glass
under the uniform static loads
3 Definitions
This Standard uses the following definitions.
3.1 Laminated glass
It refers to the glass products produced by putting the interlayer in between one
layer of glass and one or more layers of glass or plastic materials.
3.2 Interlayer
It refers to the materials playing the roles of bonding and isolation between
glass or between glass and plastic materials, so as to ensure that the laminated
glass has resistance to impact, solar control and sound insulation.
3.3 Laminated glass of category I
It refers to the laminated glass making no requirements for the grape-shot bag
impact test.
3.4 Laminated glass of category II-1
It refers to the laminated glass with the grape-shot bag impact height of
1,200mm and conforming to the provisions of Section 5.11.
3.5 Laminated glass of category II-2
It refers to the laminated glass with the grape-shot bag impact height of 750mm
and conforming to the provisions of Section 5.11.
3.6 Laminated glass of category III
It refers to the laminated glass with the total thickness of not greater than 16mm
and conforming to the provisions of Section 5.11.
4 Classification
4.1 CLASSIFY in accordance with shapes.
For the multilayer products, the products with the total raw glass thicknesses of
greater than 24mm, and the products using tempered glass as raw glass, the
thickness tolerances shall be agreed by the supply and requisitioning parties.
5.3.3.1 Thickness deviation of dry laminated glass
The thickness deviation of dry laminated glass cannot exceed the sum OF the
tolerances of the raw glass sheets constituting laminated glass AND the
interlayer tolerances. When the total interlayer thickness is less than 2mm, the
tolerances shall not be taken into consideration. When the total interlayer
thickness is greater than 2mm, the tolerances shall be ± 0.2mm.
5.3.3.2 Thickness deviation of wet laminated glass
The thickness deviation of wet laminated glass cannot exceed the sum OF the
tolerances of the raw glass sheets constituting laminated glass AND the
interlayer tolerances.
For the interlayer tolerances, SEE Table 5.
Table 5 Wet Laminated Glass - Interlayer Tolerances
5.3.4 Diagonal deviation
For the products made of rectangular laminated glass, when the side length is
less than 2,400mm, the diagonal deviation shall not be greater than 4mm; when
the side length is greater than 2,400mm, the diagonal deviation shall be agreed
by the supply and requisitioning parties.
5.4 Flexibility
The flexibility of flat laminated glass shall not be greater than 0.3%. The
flexibility of the laminated glass made of wired glass or tempered glass shall be
agreed by the supply and requisitioning parties.
5.5 Visible light transmittance
The visible light transmittance shall be agreed by the supply and requisitioning
parties. TAKE three test samples for testing. The three test samples are
considered to be qualified when all of them conform to the requirements.
mm
Interlayer thickness d Tolerance δ
5.6 Visible light reflectance
The visible light reflectance shall be agreed by the supply and requisitioning
parties. TAKE three test samples for testing. The three test samples are
considered to be qualified when all of them conform to the requirements.
5.7 Heat resistance
The test samples are allowed to have cracks after the test. However, no bubbles
or other defects can generate in the sections that are 13mm beyond the edges
or cracks.
TAKE three test samples for testing. The three test samples are considered to
be qualified when all of them conform to the requirements. When one of them
fails to conform to the requirements, the three test samples are considered to
be unqualified. When the second test sample conforms to the requirements,
CONDUCT additional test to three new test samples. The three test samples
are considered to be qualified when all of them conform to the requirements.
5.8 Moisture resistance
After the test, no bubbles or other defects can generate in the sections that are
15mm beyond the original edges, 25mm beyond the new trimming, and 10mm
beyond the cracks.
TAKE three test samples for testing. The three test samples are considered to
be qualified when all of them conform to the requirements. When one of them
fails to conform to the requirements, the three test samples are considered to
be unqualified. When the second test sample conforms to the requirements,
CONDUCT additional test to three new test samples. The three test samples
are considered to be qualifi...