GB/T 25978-2018 PDF in English
GB/T 25978-2018 (GB/T25978-2018, GBT 25978-2018, GBT25978-2018)
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[Including 2024XG1] Road vehicle -- Plates and label
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Standards related to: GB/T 25978-2018
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GB/T 25978-2018: PDF in English (GBT 25978-2018) GB/T 25978-2018
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 43.020
T 04
Replacing GB/T 25978-2010
Road Vehicle – Plates and Label
ISSUED ON. MAY 14, 2018
IMPLEMENTED ON. DECEMBER 01, 2018
Issued by. State Administration for Market Regulation;
Standardization Administration of PRC.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative References ... 4
3 Terms and Definitions ... 4
4 Performance Requirements for Plates and Labels ... 6
5 Test Methods of Plates and Labels ... 10
Appendix A (Informative) Label Pasting Surface Suggestion ... 24
Road Vehicle – Plates and Label
1 Scope
This Standard specifies the classification, performance requirements and test method
for the plates and labels use don road vehicle to describe the vehicle information.
This Standard is applicable to various types of plates and labels used on road vehicles
to describe the vehicle manufacturing information, warning information, manipulation
and indicative information.
This Standard is not applicable to the directly-formed vehicle labels through marking,
etching, casting, spraying, printing on the vehicle or vehicle components; or through
sewing on the bodies of the components.
This Standard is not applicable to the vehicle or component labels used (which can be
removed before normal use of the vehicle) during the manufacturing, transporting,
handover period.
Various types of plates and labels used for vehicle parts and assemblies can be
referred to.
2 Normative References
The following documents are essential to the application of this document. For the
dated documents, only the versions with the dates indicated are applicable to this
document; for the undated documents, only the latest version (including all the
amendments) are applicable to this document.
GB/T 250 Textiles - Tests for Color Fastness - Grey Scale for Assessing Change
in Color
GB/T 3280 Cold Rolled Stainless Steel Plate Sheet and Strip
GB/T 13306 Plate
3 Terms and Definitions
The following terms and definitions are applicable to this document.
After the test of 5.2.3.7, 180° peel strength shall be greater than or equal to
0.8N/mm; while 90° peel strength shall be greater than or equal to 0.8N/mm.
f) Peel strength after cyclic aging
After the test of 5.2.3.8, 180° peel strength shall be greater than or equal to
1N/mm; while 90° peel strength shall be greater than or equal to 0.8N/mm.
g) Peel strength after moisture-resistance aging
After the test of 5.2.3.9, 180° peel strength shall be greater than or equal to
0.8N/mm; while 90° peel strength shall be greater than or equal to 0.8N/mm.
4.2.2 Pulling force performance
After the test of 5.2.4, the pulling force shall be greater than or equal to 125N.
4.2.3 Dynamic shear strength
4.2.3.1 Dynamic shear strength at initial adhesion
After the test of 5.2.5 a), the dynamic shear strength shall be greater than or equal to
0.2N/mm2.
4.2.3.2 Dynamic shear strength in standard environment
After the test of 5.2.5 b), the dynamic shear strength shall be greater than or equal to
0.3N/mm2.
4.2.3.3 Dynamic shear strength at high temperature
After the test of 5.2.5 c), the dynamic shear strength shall be greater than or equal to
0.2N/mm2.
4.2.3.4 Dynamic shear strength after thermal aging
After the test of 5.2.5 d), the dynamic shear strength shall be greater than or equal to
0.4N/mm2.
4.2.3.5 Dynamic shear strength after warm water aging
After the test of 5.2.5 e), the dynamic shear strength shall be greater than or equal to
0.3N/mm2.
4.2.3.6 Dynamic shear strength after cyclic aging
After the test of 5.2.5 f), the dynamic shear strength shall be greater than or equal to
0.3N/mm2.
phenomenon, no damage, no significant change in surface color compared with the
sample before the test; the information on the label shall be clear and easy to identify;
if there is a barcode on the label, the barcode shall be readable after the test.
4.3.7 Color fastness performance
After the test of 5.3.8, the color difference produced by the label shall meet at least the
requirements of Level-4 gray scale specified in GB/T 250.
4.3.8 Artificial climate accelerated aging performance
After the test of 5.3.9, the label shall be in good appearance, no adhesive or separative
phenomenon, no damage, no significant change in surface color compared with the
sample before the test; the information on the label shall be clear and easy to identify;
if there is a barcode on the label, the barcode shall be readable after the test.
4.3.9 High-pressure resistance cleaning performance
After the test of 5.3.10, the label shall be in good appearance, no adhesive or
separative phenomenon, no damage, no significant change in surface color compared
with the sample before the test; the information on the label shall be clear and easy to
identify; if there is a barcode on the label, the barcode shall be readable after the test.
4.3.10 Thermal shear bond strength
After the test of 5.3.11, the label displacement shall not exceed 5mm; the font on the
label shall not be distorted; the information on the label shall be clear and easy to
identify; if there is a barcode on the label, the barcode shall be readable after the test.
4.4 Additional requirements for special purpose labels 1)
4.4.1 Anti-tamper performance
4.4.1.1 Label removal
4.4.1.1.1 The label shall be self-destructive by tearing the label or making the
information on the label unrecognized. After the test of 5.3.12, the label shall be broken
and cannot be completely removed; or the fracture does not occur, but the appearance
changes significantly (such as cracks, deformation, etc.), resulting in incomplete label
information.
4.4.1.1.2 After the label attached to the paint surface is removed, the appearance of
the part area where the label is attached to shall occur the identifiable change, so that
the examiner can track back to the witness to prove the existence of original label in
1) For special purpose labels (such as vehicle identification code label, product plate, engine marking, etc.)
used to identify the vehicle (or parts and assemblies) identity or manufacturing history, it shall also have
anti-tamper and anti-counterfeiting performance as per the requirements.
5.2.3.4 Peel strength test in standard environment
After placing the test sample in the standard environment for 72h, test as per the test
method specified in 5.2.3.1 or 5.2.3.2.
5.2.3.5 Peel strength test at high temperature
After placing the test sample in the standard environment for 24h, test at 80°C±2°C
condition as per the test method specified in 5.2.3.1 or 5.2.3.2.
5.2.3.6 Peel strength test after thermal aging
After placing the test sample in standard environment for 24h, place it at 80°C±2°C
condition; then place the sample in the standard environment 24h. Test as per the test
method specified in 5.2.3.1 or 5.2.3.2.
5.2.3.7 Peel strength test after warm water aging
After placing the test sample in standard environment for 24h, immerse it into a water
bath at 40°C±2°C for 240h; then completely erase the moisture on the surface; place
it in standard environment for 24h; test as per the test method specified in 5.2.3.1 or
5.2.3.2.
5.2.3.8 Peel strength test after cyclic aging
After placing the test sample in standard environment for 24h, perform the aging test
under the following temperature cycle.
a) Place at -30°C±2°C condition for 17h;
b) Place at 70°C±2°C condition for 72h;
c) Place at 38°C±2°C, 100% RH condition for 24h;
d) Place at -30°C±2°C condition for 7h;
e) Place at 38°C±2°C, 100% RH condition for 17h;
f) Place at 70°C±2°C condition for 7h.
After completion, place the test sample in the standard environment for 24h; test as
per the test method specified in 5.2.3.1 or 5.2.3.2.
5.2.3.9 Peel strength test after humidity resistance aging
After placing the test sample in the standard environment for 24h, place the test sample
at 38°C±2°C, 95% RH condition for 240h; after that, place the test sample in the
standard environment for 24h; then test as per the test method specified in 5.2.3.1 or
f) Dynamic shear strength test after cyclic aging
After placing the test sample in standard environment for 24h, perform the aging
test under the following temperature cycle.
1) Place at -30°C±2°C condition for 17h;
2) Place at 70°C±2°C condition for 72h;
3) Place at 38°C±2°C, 100% RH condition for 24h;
4) Place at -30°C±2°C condition for 7h;
5) Place at 38°C±2°C, 100% RH condition for 17h;
6) Place at 70°C±2°C condition for 7h.
After completion, place the test sample in the standard environment for 24h; test
as per the test method specified in 5.2.5.
g) Dynamic shear strength test after windshield detergent aging
Add the following reagents to the clean water.
1) 20% (volume ratio) ethanol (purity of 95%; containing 1% butanol);
2) 10% (volume ratio) isopropanol (purity > 98%);
3) 0.09% (mass ratio) sodium lauryl sulfate (SDS, purity of 95%)
4) 0.6% (mass ratio) ethylene glycol (purity > 98%).
Completely immerse the prepared test sample in the above solutions in the standard
environment; after immersing 30min, place it in the standard environment for 2h; then
test as per the test method specified in 5.2.5.
5.2.6 Static shear strength test
In the standard environment, prepare the tape sample with width of 25mm±1mm,
length of 25mm±1mm.
Paste the tape on the test board; then use a 2kg-weight and 50mm-wide press roll to
roll back and forth on its surface at the speed of 300mm/min; ensure the completely
pasting of the tape. After placing it in the standard environment for 72h, apply 2kg-
weight substance to the lower end of the vertical direction; measure the separation
time of the two test boards (see Figure 5).
5.3.2 180° peel strength test
Prepare the label with width of 25mm±1mm, length of 200mm±1mm; attach the label
to the test board (length of 125mm±1mm, width of 50mm±1mm, thickness of
1.5mm~2.0mm); use a 2kg-weight and 50mm-wide press roll to roll back and forth on
its surface at the speed of 300mm/min; ensure the completely pasting of the label.
Under the following test conditions.
a) Place in the standard environment for 24h;
b) After the test of 5.3.5, place in the standard environment for 1h;
c) After the test of 5.3.6.1, place in the standard environment for 1h.
The free end of the label shall be folded for 180°; peel 25mm±1mm label from the test
board; separately hold the free end of label and test board onto the upper and lower
clamper of the tensile tester; keep the peeling surface and the force line of the tensile
tester consistent. The tensile tester shall continuously peel the label at the peeling
speed of 300mm/min; draw the peeling curve by the automatic recorder; the
measurement value of first 20mm±1mm of the peeling curve shall not be recorded;
then record the measurement value of the peeling curve at the range of 20mm±1mm
~ 80mm±1mm. The test results are the average of the test results of the respective
test samples.
180° peel strength test is not applicable to labels having properties of 4.4.1.1.1.
5.3.3 Abrasion resistance test
The label shall be applied to the same paperboard substrate provided by the
manufacturer of the Taber abrasion tester, use CS-10 grinding wheel, pass through the
Table abrasion tester; perform the following abrasion cycle at the load of 500g and at
the speed of 30r/min.
a) Class A, C, D, E labels shall be performed 100 abrasion cycles;
b) Class B, F labels shall be performed 200 abrasion cycles.
5.3.4 Liquid resistance test
In addition to the standard provisions, the liquid resistance test shall use the actually
applied liquid of the vehicle. The test includes.
a) Detergent resistance test
In the standard environment, separately immerse the test samples into leather
cleaning solution, carpet and vehicle cleaning liquid, 50% volume mixed
After placing in the standard environment for 72h, titrate the battery sulfuric acid
solution (relative density of 1.28) to wet the edges between total label and pasted
surface, and partial surface of the label; place for 7d; visually examine (observe
at the time interval of 24h; if the sulfuric acid is volatilized, repeat the immersing
procedure).
The acid resistance test is only applicable to the labels attached to the battery.
g) Transmission fluid resistance test
In the standard environment, immerse the test sample into 23°C±2°C
transmission fluid vertically; place for 4h; take out test sample; use cotton cloth
to wipe till the surface has no visible transmission fluid; then place in 150°C±2°C
condition for 4h; take out test sample, and visually examine.
The transmission fluid resistance test is only applicable to the F type label.
5.3.5 Humidity resistance test
Place the test sample in the 40°C±2°C, 100% RH condition for 144h.
After the test, place it in the standard environment for 1h; then visually examine.
5.3.6 Thermal cycling test
5.3.6.1 The test sample shall perform the following 2 cycles [one cycle is indicated
form a) to d)]
a) For A type and D type labels, place in 120°C±2°C for 30min; for B type, C type,
E type labels, place in 90°C±2°C for 30min; for F type label, place in 150°C±2°C
for 30min;
b) Place in 23°C±2°C, 50%±5% RH condition for 15min;
c) Place in -30°C±2°C condition for 30min;
d) Place in 23°C±2°C, 50%±5% RH condition for 15min.
After the test, place in the standard environment for 1h, and visually examine.
5.3.6.2 After the test sample is prepared, place in the standard environment for 10min;
perform 2 cycles as stipulated in a) ~ d) of 5.3.6.1. After the test, place in the standard
environment for 1h; and visually examine.
5.3.6.3 It is only applicable to the labels that require significant temperature changes
in a short time after pasting. 5.3.6.2 is not used as a label performance evaluation test;
if after the test, the label appearance is significantly changed or the adhesion
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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