Some standard content:
Classification number Y73
Registration number 9494~9496—2001
Light Industry Standard of the People's Republic of China
QB/T 2171~2173-2001
Zipper Standard
Metal Zipper
Published on 2001-11-15
Injection Zipper
China Light Industry Federation
Nylon Zipper
Implementation on 2002-05-01
QB/T2171--2001
This standard is a revision of QB/T2171-1995 "Metal Zipper". The revision content is as follows. 1. Delete the original standard for the classification of zipper physical properties (i.e., excellent, etc. Qualified): Delete the original standard folding and pulling strength index:
Revise some of the original standard zipper physical performance indicators; - Revise the specifications and models in the original standard. Revise the specifications (tooth chain width) corresponding to the models in the original standard; Add No. 6 and No. 8 metal zippers, and adjust the original No. 10 metal zipper to No. 9 metal zipper; Revise the bottom stop strength test method;
-Add the physical performance indicators and test methods of the self-locking strength of the slider, the tensile strength of the slider, and the torsion resistance of the slider pull tab: - Add the requirements and test methods for color fastness to friction and color fastness to washing. Appendix A of this standard is the appendix of the standard.
This standard is proposed by the General Business Department of the China Light Industry Federation. This standard is under the jurisdiction of the National Daily Hardware Standardization Center and is drafted by Fujian Xunxing Group Co., Ltd. Wenzhou Hehe Industrial Co., Ltd., Jiangsu Lixi Zipper Co., Ltd., Shanghai Donglong Zipper Manufacturing Co., Ltd., Zhejiang Huaxin Group Co., Ltd., and the Zipper Branch of China Hardware Products Association participated in the drafting.
The main drafters of this standard: Shi Weijiang, Li Yuxin, Hui Yongfu, Ge Chunqi, Gui Xilin, Ouyang Di, and Zhu Guanwu. From the date of implementation of this standard, the industry standard QB/T21711995 Safety and Medical Chain issued by the former State Bureau of Light Industry will be abolished.
Light Industry Industry Standard of the People's Republic of China
Metal Zipper
QB/T 2171--2001
Replaces QB/T21711995
This standard specifies the product classification, requirements, test methods, inspection rules and marking, packaging, transportation, and storage of metal zippers.
This standard applies to metal zippers (hereinafter referred to as "zippers") 2 Reference standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards.
GB250-1995 Grey sample card for assessing discoloration GB251-1995 Grey sample card for assessing staining GB/T28281987 Count sampling procedure and sampling table for batch inspection (applicable to inspection of continuous batches) Count sampling procedure and sampling table for periodic inspection (applicable to inspection of stability of production process) GB/T2829--1987
GB/T39201997 Textiles test for color fastness Color fastness to rubbing GB/T3921.31997 Textiles test for color fastness Color fastness to washing:. Test 33 Product classification
3.1 Product type (see Figure 1)
3.1.1 Products can be divided into copper, aluminum, etc. according to the material of the chain teeth. 3.1.2 Products can be divided into chemical fiber tape and cotton yarn tape according to the zipper tape. 3.1.3 Products can be divided into strip packaging and code packaging according to the type. 3.1.3.1 Strip zippers can be divided into open-end and closed-end types: open-end types are divided into single-end and double-end; closed-end types are divided into single-end and double-end.
3.2 Specifications and models (see Table 1)
Zipper specifications and matching (see Appendix A)
Table 1 Specifications and models
Specifications by/mm
Note: Specification b is the selection range of the width of the tooth chain after engagement. Approved by China Light Industry Federation on November 15, 20014
Implementation on May 1, 2002
Single-end closed-end zipper
RARRAORORA
3.4 Dimensional parameters (see Table 2)
Double-end closed-end zipper (type 0)
HO0OO000000
0000000
D000O0
Single-end open-end zipper
Zipper length L
Basic dimensions||t t||≤315
>315~630
>630~1000
≤315
>315~630
>630~1000
≤315
>315~630
>630~1000
Limit deviation
Dimension parameters
Tape width b2
Note; 1. For zipper basic size greater than 1000mm, the limit deviation is ±1%. 2. Open-end zipper has no back head. Special size zipper shall be agreed upon when ordering. Double-ended closed-end zipper (\×” type)
Double-ended open-end zipper (“×” type)
Front lead L
Rear lead L2
4 Requirements
Main physical properties of zipper (see Table 3)
QB/T 21712001
Table 3 Main physical properties of zippers
Strength of flat pull, NbZxz.net
Smoothness of closing and closing, N
Strength of upper stop, N
Strength of lower stop, N
Strength of open-end flat pull, N
(including double open-end zippers)
Strength of socket displacement, N
(including double open-end zippers)
Strength of puller and puller tab, N
Torsion resistance of puller and puller tab, N·m
Tensile strength of puller, N
Self-locking strength of slider, N
Load pulling times
(double times)
Single tooth displacement strength, N
Zipper model
350315
Note: 1. The torque resistance requirement of slider and puller is only applicable to the slider with the slider body and puller directly combined. 2. The tensile strength requirement of slider is not applicable to non-metallic sliders. 4.2 Surface quality of zipper
4.2.1. The surface of the zipper is bright in color, soft, smooth, flat, straight and well meshed. 4.2. 2 Zipper straightness (see Table 4)
Table 4 Zipper straightness
Zipper length L
Straightness
>180~315
>315~630
The entire zipper has complete parts, the chain teeth are arranged neatly, and there must be no missing teeth or broken teeth. 8
>630~1000
The zipper bottom stop has no obvious skew, and the slider must not get stuck on the top stop or bottom stop when opening and closing. 4.2.4:
4.2.5 Open end The zipper (including double-end zipper) is flexible to insert, remove and start; the reinforcing tape and the cloth tape are firmly and neatly bonded. 4.2.6 The electroplating layer of the slider is firm and uniform, without defects such as bubbles and peeling, and the cavity is flat and smooth; the pull tab should be flexible to turn over and the trademark should be clear.
4.2.7 The zipper size parameters are in accordance with 3.4: the length of each hundred meters of the stack is (100 ± 0.5) m. The chain belt is bright in color, and the color difference of the cloth belt in the same batch number should reach Level 3 specified in GB250-1995. The same zipper 4.2.8
QB/1 2171--2001
The color difference of the fabric tape shall reach the level 4 specified in GE250-1995. 4.2.9 Color fastness
4.2.9.1 Color fastness to friction The color fastness of the chain belt after the friction test shall meet the requirements of level 3 to 4 in GB251-1995.
.4.2.9.2. Color fastness to washing The color fastness of the chain belt after washing shall meet the requirements of level 3 to 4 in GB250--1995. 4.2.10 The number of joints in the yard chain belt shall not exceed 3 per 100 meters. 4.2.11 Special requirements for zippers or other components of zippers, such as non-banned azo, non-nickel, and needle detection, shall be agreed upon by the supply and demand parties.
5 Test method
5.1 Flat tensile strength test method
5.1.1 Test equipment and fixture
5.1.1.1 Test equipment Material testing machine. 5.1.1.2 Test range 2000N.
5.1.1.3 Test speed
（300±10）mm/min.
5.1.1.4 Test equipment accuracy ±0.5%FS. 5.1.1.5 The main dimensions of the fixture are width 25mm, clamping surface tooth profile angle 60°, pitch 1.5mm, and tooth top width 0.2mm. The two meshing clamping mouths are processed to a plane 0.5mm lower than the tooth surface at 3mm from the inner teeth. 5.1.2 Test method and steps
Take a zipper sample with a length greater than 75mm and clamp it in the above-mentioned fixture. When clamping, the chain tooth foot and the clamp mouth should be aligned and close together (see Figure 2). Start the tester and test until the teeth are stripped or the yarn is damaged. The value displayed at this time is the flat pull strength value.
5.2 Test method for pull-in and pull-out light slippage
5.2.1 Test equipment and fixture
5.2.1.1. The test equipment is composed of sensors, fixtures, transmission and display systems. 5.2.1.2 Test range ≤20N.
5.2.1.3 Test speed 1200mm/min~1300mm/min. 5.2.1.4 Test equipment accuracy ±0.5%FS. 5.2.2. Test method and steps
Take a finished zipper, randomly select a length of 200mm (if the length is less than 200mm, use the actual length), pull it back and forth three times by hand, then place it on the workbench in the opened state, push the open end flat by hand, and clamp the other end in the fixed fixture, and put the pull piece on the shift fixture (see Figure 3). Start the tester to pull and close the zipper to the fixed point position. During this movement, the maximum tension value recorded is the pull and close smoothness.
Weird fixture
5.3 Top stop strength test method
5.3.1 Test equipment and fixture
5.3.1.1 Test equipment is the same as 5.1.1.1.
5.3.1.2 Test speed
Same as 5.1.1.3.
5.3.1.3 Clamp
00000000000000000000-c00o0
NOOIO00000000000COO000O
The pull tab clamp should be a penetration type or a clamp type clamp according to the pull tab structure. The chain strap clamp is the same as 5.1.1.5.
5.3.2 Test method and steps
Take a zipper sample section with a zipper head and a top stop that is longer than 50mm, clamp the zipper end in the clamp, and clamp the pull tab in the pull tab clamp (see Figure 4). Start the tester and test until the zipper is damaged. The strength value at this time is the top stop strength.
5.4 Test method for bottom stop strength
5.4.1 Test equipment and fixture
5.4.1.1 Test equipment is the same as 5.1.1.1.
5.4.1.2 Test speed
The same as 5.1.1.3.
5.4.1.3 Test fixture is the same as 5.1:1.5.
5.4.2 Test method and steps
QB/2171---2001
Take a zipper sample with a length of about 50mm and a slider (self-locking slider should exclude the self-locking function first) and a bottom stop, pull the slider to the bottom stop (pull tab flipped up), and clamp the two ribs between the upper and lower fixtures (remove the chain teeth of about 10mm first), and the distance between the fixtures is about 75mm (see Figure 5). Start the tester and test until the zipper breaks. The strength value at this time is the lower stop strength. 5.5 Open-end horizontal pull strength test method
5.5.1 Test equipment and fixture
5.5.1.1 Test equipment is the same as 5.1.1.1.
5.5.1.2 Test speed is the same as 5.1.1.3.
5.5.1.3 Test fixture is the same as 5.1.1.5.
5.5.2. Test method and steps
Take a zipper sample with a length greater than 50mm and a separate piece, and clamp the separate piece in the above fixture. When clamping, the edge of the fixture must be in a straight line with the inner end of the insert (i.e., close to the chain tooth end), and the clamp mouth must be close to the insert socket (see Figure 6). Start the tester and test until it is detached or the fabric tape is broken. The strength value at this time is the open-end horizontal pull strength. Figure 6
.5.6 Socket displacement strength test method
5.6.1 Test equipment and fixture
5.6.1.1 Test equipment is the same as 5.1.1.1.
5.6.1.2 Test speed
Same as 5.1.1.3.
5.6.1.3 Test fixture The upper fixture adopts a folding card fixture, and the lower fixture is the same as 5.1.1.5.5.6.2, Test method and steps
Take a zipper sample with a length greater than 50mm and a socket. Separate the two tooth chain belts, place the socket end in the upper fixture bayonet, and clamp the other end in the lower fixture (see Figure 7). Start the tester and test until the socket falls off or is damaged. The strength value at this time is the socket displacement strength.
5.7 Test method for pull tab combination strength
5.7.1 Test equipment and fixture
Test equipment
Same as 5.1.1.1.
Test speed
Same as 5.1.1.3.
QB/T21712001
5.7.1.3 Test fixture The upper fixture should be a penetration type or clamp fixture according to the characteristics of the pull tab, and the lower fixture should be a partition type fixture. 5.7.2 Test method and steps
Take a finished zipper head and clamp it in the fixture (see Figure 8). Start the tester and test until the pull tab or the pull head body is damaged. The strength value at this time is the pull head body and pull tab combination strength. 5.8 Test of the torsion resistance of the slider
5.8.1 Test principle and technical indicators
5.8.1.1 Test principle The test principle of the torsion resistance of the slider is shown in Figure 9. Fixture
Adjustment mechanism
5.8.1.2 Accuracy ±1%FS
5.8.1.3 Torsion speed 1.5r/min.
5.8.2 Test method and steps
Loading mechanism and
Torque display system
Place the slider body of the slider in a fixed fixture and clamp it, then clamp the slider in a clamp that can rotate vertically to the slider body, and clamp the midpoint of the slider. Start the tester and test until the slider is twisted off or damaged relative to the slider body. The torque value at this time is the torsion resistance of the slider. 5.9 Test method for tensile strength of slider
5.9.1 Test principle and fixture
5.9.1.1 Test principle The test principle for tensile strength of slider is shown in Figure 10.5.9.1.2 The upper and lower jaws of the fixture enter the meshing mouth by 2mm. 5.9.1.3 Accuracy
a). Accuracy of force value display system ±1%FS:
b) Accuracy of displacement display system ±0.01mm. 5.9.1.4 Test speed 10mm/min.
5.9.2 Test method and steps
a) Adjust the position of the upper and lower jaws, and clamp the meshing mouth of the slider on the upper and lower jaws (same as 5.9.1.2); b) Adjust the position of the upper and lower jaws to a reasonable test state: c) Start the test device and start the test until the deformation is 0.5mm and stop working. The test value recorded at this time is the tensile strength of the slider;
d) Determination
QB/T2171-2001
Compare the tensile strength of the slider with the corresponding value in Table 3 to determine whether it is qualified or not. Force value loading and
display system
Deformation control and
■ display system
Upper card
5.10 Test method for self-locking strength of slider
5.10.1 Test equipment and fixture
5.10.1.1 Test equipment is the same as 5.1.1.1.
5.10.1.2 Test speed
Same as 5.1.1.3
5.10.1.3 Test fixture is the same as 5.1.1.5:
5.10.2 Test method and steps
Adjustment mechanism
Lower clamp
Take a section of zipper sample with a self-locking slider that is longer than 100mm, pull the slider to the middle position, and clamp the chain belts on both sides of the separated end on the upper and lower clamps respectively. The distance between the clamps is about 3 (see Figure 2). Start the tester and test until the slider slips off or the zipper is damaged. The strength value at this time is the slider self-locking strength. 5.11 Test method for load pulling times
5.11.1 Test equipment and fixture
5.11.1.1 The test equipment consists of a set of fixtures, a reciprocating transmission system and a display system. The instrument reciprocates 30 times/min, the stroke is 75mm, and the opening and closing angles are: 30° for opening and 60° for closing. 5.11.1.2
Test range: The zipper specifications are within 3.5mm~12mm. 5.11.1.3
5.11.1.4The test fixture has a horizontal width of 25mm and a vertical width of 10mm. The clamping surface tooth profile angle is 60°, the pitch is 1.5mm, and the tooth width is 0.2mm.
5.11.2Test method and steps
Take a zipper sample with a length of more than 250mm, and wipe the front and back sides with paraffin twice. 5.11.2.11
5.11.2.2 Check the pull meter, make sure the pull tab fixture stays at the lower limit, clamp the zipper at five fixed points, and secure the pull tab (see Figure 12).
5.11.2.3 Test steps
a) First roughly fix the tail end (lower end stop) of the zipper on the fixed point A (the pull tab faces inwards): b) Fix the pull tab on the pull tab fixture;
c) Fix the front end (upper end stop) of the zipper on points D and E: d) Loosen the fixed point A, pull the tail end of the zipper upwards so that the fixing pin falls in the middle of the hole of the balance plate, and then clamp point A 10
QB/T 2171--2001
tightly (at this time, visually observe that points D and E are on the same horizontal line): e) Loosen the horizontal clamps B and C, and put the fabric tapes on both sides of the zipper tape into B and the protruding fixture and clamp them, with the clamping mouth about 5mm away from the tooth foot. At this time, the five fixed points are fixed; f) Adjust the pull meter to the upper limit, loosen the pull tab fixture, and visually observe whether the zipper remains straight. If it does not meet the requirements, readjust until the clamping is completed;
) For zippers of different specifications, add loads in the transverse and longitudinal directions according to the specified requirements (see Table 5). Each
about 75mm
Table 5 Transverse and longitudinal loads for zippers
Zipper model
Load direction
Transverse F
Vertical F2
Start the pulling instrument to run the test and complete the specified number of times or until the sample breaks in advance. 5.11.2.4
Single tooth displacement strength test method
Test equipment and fixture
Test equipment is the same as 5.1.1.1.
Test speed
Same as 5.1.1.3.
Upper fixture is the same as 5.1.1.5.
Lower fixture
Use a tongue insertion fixture.
Test method and steps
a) Take a section of zipper sample with a length greater than 50mm and cut it evenly. Separate the two tooth chain belts, remove two chain teeth from the cut point, leave the third tooth, and clamp them in the above clamp. When clamping, buckle the first tooth after removing two teeth into the upper clamp, and clamp the other end in the lower clamp (see Figure 13).
Note: When removing chain teeth, the belt ribs must not be damaged, and the adjacent chain teeth cannot be magnetically moved. 1
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