QB/T 1868-2004 Polyethylene terephthalate (PET) carbonated beverage bottles
Some standard content:
ICS83.080
Classification number: G33
Registration number: 15124-2005
Light Industry Standard of the People's Republic of ChinawwW.bzxz.Net
QB/T1868-2004
Replaces QB/T1868-1993
Polyethylene terephthalate (PET) carbonated beverage bottlePolyethylene terephthalate (PET) bottle for carbonation drink2004-12-14Published
National Development and Reform Commission of the People's Republic of ChinaProduct Partner Network httn://
2005-06-01Implementation
QB/T1868-2004
Please note that some contents of this standard may involve patents. The issuing agency of this standard shall not bear the responsibility for identifying these patents. This standard is a revision of QB/T1868-1993 "Polyester (PET) Soft Drink Bottle". The main differences between this standard and QB/T1868-1993 are as follows: - The specification classification is cancelled in the product classification, and the bottle mouth is divided into 1716 bottle mouth and PCO bottle mouth according to the structure; the bottle structure is divided into two categories: base bottle and baseless bottle, and the technical requirements for baseless bottles are added to the relevant technical requirements. 1. Newly added different bottle mouth specifications:
1. The original standard requirements for the wall thickness of non-inflatable bottles have been cancelled, and the wall thickness indicators of various parts of the bottle have been modified: 1. The requirements for the verticality deviation of the bottle have been increased. For height H>300mm, the verticality deviation has been changed from the original ≤6.4mm to ≤5mm; for height 150mm≤H≤300mm, the verticality deviation has been changed from the original ≤4.5mm to ≤4mm; 2. The requirements for pressure resistance have been added to the physical and mechanical properties: the average value of the acetaldehyde content index of the colorless bottle has been changed from the original ≤not more than 3μg/L to ≤not more than 5ug/L: the acetaldehyde content test method has been newly added to the crushing method:
-Informative Appendix A, Appendix B and Appendix C have been added. Appendix A, Appendix B and Appendix C of this standard are informative appendices. This standard is proposed by the China Light Industry Federation. This standard is under the jurisdiction of the National Technical Committee for Standardization of Plastic Products. This standard is drafted by Zhuhai Zhongfu Industrial Co., Ltd. The main drafters of this standard are: Huang Lefu, Lu Huancheng, Huang Zhaohui, Xu Zheng, Rong Yibin, Huang Shaoping, Yu Xiaohui, Lian Bing, Li Dongmei. This standard was first issued in 1993, and this is the first revision. From the date of implementation, this standard replaces the light industry standard QB/T1868-1993 "Polyester (PET) Soft Drink Bottle" issued by the former Ministry of Light Industry.
1 Scope
Polyethylene terephthalate (PET) carbonated beverage bottle QB/T1868-2004
This standard specifies the definition, product classification, requirements, test methods, inspection rules and marking, packaging, transportation and storage of polyethylene terephthalate (PET) carbonated beverage bottles. This standard applies to carbonated beverage bottles produced by injection molding, stretching and blow molding using polyethylene terephthalate resin for bottles as raw materials.
2 Normative References
The clauses in the following documents become the clauses of this standard through reference in this standard. For all referenced documents with dates, all subsequent amendments (excluding errata) or revisions are not applicable to this standard. However, parties that reach an agreement based on this standard are encouraged to study whether the latest versions of these documents can be used. For all referenced documents without dates, the latest versions are applicable to this standard. GB/T2410-1980 Test method for light transmittance and haze of transparent plastics GB/T2828.1-2003 Sampling inspection procedure for attributes Part 1: Sampling plan for batch inspection based on acceptance quality limit (AQL) GB/T2918-1998 Standard environment for conditioning and testing of plastic specimens GB/T10792-1995 Carbonated beverages (soft drinks) GB13113 Hygienic standard for polyethylene terephthalate molded products for food containers and packaging materials GB/T16288-1996
Recycling mark for plastic packaging products
3 Definitions
The following definitions apply to this standard.
Refers to a point at a certain distance from the bottle mouth plane to the liquid surface. 3.2
Vertical deviation
The deviation value between the geometric center axis of the bottle and the vertical axis of the bottom plane. 4 Product classification
4.1 According to the bottle structure, it can be divided into bottles with base (see Figure 1) and bottles without base (see Figure 2). 4.2 According to the structure, the bottle mouth can be divided into 1716 bottle mouth (see Figure 3) and PCO bottle mouth (see Figure 4). 4.3 According to the color of the bottle, it can be divided into colorless bottle and colored bottle. 1
QB/T1868—2004
A-pattern: B-support ring: C-shoulder: D-bottle body: E-bottom: G-bottom center Figure 1 Bottle with base
5 Requirements
5.1 Appearance
Should meet the requirements of Table 1.
With base
Without base
A-thread: B-support ring: C-shoulder: D-bottle body: E-bottom: F-bottom foot: G-bottom centerFigure 2 Bottle without base
Table 1 Appearance requirements
The end face is flat, the thread should be smooth and without chipping, and the overflow burr should not exceed 0.13mm. Good plasticization, no bubbles, no stains and foggy whitening, uniform color, full molding, and no obvious shrinkage or deformation of the bottle body. Uniform color, the base gate does not exceed the bottom plane, and there is no obvious flash. After the carbonated beverage is injected, the gate does not exceed the bottom surface, and the bottle can stand stably. 5.2 Bottle mouth specifications and size deviations
Should meet the requirements of Table 2 or Table 3.
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Z-support ring diameter; A-locking ring diameter, T-thread diameter: E-bottle mouth diameter S-thread start, D-locking ring height: X-bottle mouth height Figure 3 1716 bottle mouth
Table 2 1716 bottle mouth specifications
Test items
Support ring diameter Z
Locking ring diameter A
Thread diameter T
Bottle mouth diameter E
Thread start S
Locking ring height D
Bottle mouth height X
httr
34.50±0.13
27.96±0.13
27.56±0.13
24.94±0.13
1.60±0.10|| tt||14.10±0.18
22.43±0.25
QB/T1868-2004
Unit: mm
QB/T1868-2004
Z-support ring diameter: A-lock ring diameter: T-thread diameter: E-bottle mouth diameter; S-thread start; D-lock ring height; X-bottle mouth height Figure 4 PCO bottle mouth
Table 3 PCO bottle mouth specifications
Test items
Support ring diameter 2
Lock ring diameter A
Thread diameter T
Bottle mouth diameter E
Thread start S
Lock ring height D
Bottle mouth height X
5.3 Height deviation
Should meet the requirements of Table 4.
5.4 Verticality deviation
shall comply with the requirements of Table 5.
|tt||33.00±0.38
27.97±0.13
27.43±0.13
24.94±0.13
1.70±0.13
14.10±0.20
21.01±0.25
Unit: mm
5.5 Capacity deviation
shall comply with the requirements of Table 6.
Nominal capacity
250~500
501~1000
1001~1500
1501~2000
2001~3000
5.6 Physical and mechanical properties
Shall meet the requirements of Table 7.
5.7 Thermal stability
Shall meet the requirements of Table 8.
5.8 Acetaldehyde content
Shall meet the requirements of Table 9.
5.9 Hygiene indicators
Commodity H
150~300
Height H
150~300
Shall meet the requirements of GB13113.
Table 4 Height deviation
Table 5 Verticality deviation
Table 6 Capacity deviation
Limit deviation
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Limit deviation
Limit deviation
QB/T1868--2004
Unit: mm
Unit: mm
Unit: ml
Average deviation
QB/T1868-2004
Sealing performance (carbon dioxide loss rate)/%
Vertical load pressure/N
Drop performance
Internal pressure resistance/MPa
Transmittance/%
Note: Transmittance is not tested for colored bottles.
Table 7 Physical and mechanical properties
The bottle should not break when dropped from a height of 2m and can stand stably≥85
Table 8 Thermal stability
250mL~500mL5
501mL~1000mL1001mL~1500mL1501mL~2000mL2001mL~3000mL bottle
Height deviation/%
Liquid level drop/mm
Vertical deviation/mm
Diameter deviation of part D/%≤
Test method
Head space method
Crushing method
Note: Either of the two methods can be selected for testing. Test method
6.1 Test state adjustment and test standard environment 3.0
No cracking, the bottle stands stably
Table 9 Acetaldehyde content
Bottle type
Colorless bottle
Colored bottle
Colorless bottle
Colored bottle
Unit is microgram per liter
Acetaldehyde content
Adjust according to the standard environment and normal deviation range specified in GB/T29181998. The sample state adjustment time should be no less than 4h. Appearance and bottle mouth size deviation
Visually inspect under natural light or 40W fluorescent lamp, and place the sample bottle mouth on the projector positioning frame with a magnification of 10 times, and measure the bottle mouth end face and size.
6.3 Height Deviation
Take 10 sample bottles and measure the maximum vertical height of the bottles with a measuring tool with an accuracy of 0.02mm. Calculate the height deviation according to formula (1). AH=H,-H.
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Where:
-Height deviation, in millimeters (mm); -Height marked on the drawing, in millimeters (mm): H
H. Measured height, in millimeters (mm). 6.4 Verticality Deviation
6.4.1 Test Instrument
Verticality Deviation Tester (see Figure 5), with an accuracy of 0.02mm. A one-thousandth meter: B a sample bottle: C a fixture: D a tester stand Figure 5 Schematic diagram of verticality deviation test
6.4.2 Test steps
QB/T1868-2004
Take 10 sample bottles, fill 2/3 of the sample bottles with water at room temperature, place them in the verticality deviation tester, use the support ring as the measuring point, put the lower part of the bottle close to the fixture, rotate 360°, and find the minimum value: adjust the zero position of the indicator to the pointer, rotate the bottle 360° again, record the maximum value of the pointer deflection, and record the test results. 6.5 Capacity deviation
Take 10 sample bottles, weigh the empty bottles respectively, then fill them with water to the filling point, weigh the total mass of the bottles and water, accurate to 0.1g, measure the water temperature, find the apparent density of water in Appendix A, and calculate the volume GG
accurately according to formula (2):
capacity of the bottle, in milliliters (mL); G
total mass of a bottle and water, in grams (g); mass of the empty bottle, in grams (g);
apparent density of water at a certain temperature, in grams per milliliter (g/mL). The capacity limit deviation is calculated according to formula (3).
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QB/T1868-2004
In the formula:
AV—capacity limit deviation, in milliliters (mL); V—nominal capacity, in milliliters (mL); V. ——The measured capacity, in milliliters (mL). The average capacity deviation is calculated according to formula (4):
Where:
A=4+4++4.
-average capacity deviation, in milliliters (mL); capacity limit deviation, in milliliters (mL); number of bottles.
6.6 Physical and mechanical properties
6.6.1 Sealing performance
Take 10 sample bottles, inject a carbonated water solution containing (23±2)℃ and a carbon dioxide content of (4.0±0.1) times the volume into the bottles, seal them with a cap, place them at (23±2)℃ for 24h, take out 5 sample bottles to measure the pressure and temperature, find out the corresponding volume according to GB/T10792-1995, store the bottles at (23±2)℃, store samples below 1000mL (including 1000mL) for 6 weeks, and store samples above 1000mL for 12 weeks, and then test them. The carbon dioxide loss rate, expressed in %, is calculated according to formula (5). Xe=C=G×100
Where:
-carbon dioxide loss rate, %;
G. ——The average volume of carbon dioxide in the sample bottle after being placed at room temperature for 24 hours, in milliliters (mL); G,——The average volume of carbon dioxide in the sample bottle after the storage period, in milliliters (mL). 6.6.2 Vertical pressure performance
Take 10 sample bottles and place them at room temperature for more than 24 hours. Place the bottles vertically on the pressure testing machine and apply pressure to the sample bottles vertically at a constant speed of 100mm/min. Record the initial maximum load that the bottles can withstand, accurate to 1N, and calculate the average value of the measurement results. 6.6.3 Drop performance
Take 10 sample bottles and inject carbonated water with a temperature of (23±2)℃ and a carbon dioxide content of (4.0±0.1) times the volume into the bottles. Then seal them with bottle caps. Five samples are placed in an environment of (4±1)℃ for 24 hours: the other five samples are placed in an environment of (24±1)℃ for 24 hours. Then place the sample bottle at a height of 2m, so that the axis of the bottle forms an angle of 30° with the straight line perpendicular to the ground, and let the bottom of the bottle fall freely onto the concrete floor. Check the damage to the bottom of the bottle and whether the bottle can stand stably. 6.6.4 Internal pressure resistance test
Take 10 sample bottles, fill the bottles with water to the filling point, and pressurize them to 1MPa with protective devices for 30s. Observe whether the bottles break and record the test results.
6.6.5 Transmittance
Take 10 sample bottles, sample at position D in Figures 1 and 2, and test according to the requirements of GB/T2410-1980. 6.7 Thermal stability
Take 10 sample bottles, mark the bottles, inject carbonated water with a temperature of (23 ± 2) °C and a carbon dioxide content of (4.0 ± 0.1) times the volume into the bottles, and then seal them with bottle caps. Place the samples at (23 ± 1) °C for 1 hour, measure the total height H of the bottle cap edge (including the bottle cap), bottle body diameter D, and liquid level height L, place them at (23 ± 2) °C for 24 hours, and then place them at a constant temperature of (38 ± 1) °C for 24 hours, take out and measure the bottle height H, bottle body diameter D, and liquid level height L. The height deviation is calculated according to formula (6), the diameter deviation is calculated according to formula (7), and the liquid level drop is calculated according to formula (8). 8
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And measure the verticality deviation of the bottle according to 6.4.
Wherein:
Height deviation, %:
-Height of the sample bottle after the test, in millimeters (mm); ×100
-Height of the sample bottle before the test, in millimeters (mm). Do-DLx100
Wherein:
X, —Diameter deviation, %;
Diameter of the sample bottle before the test, in millimeters (mm). -Diameter of the sample bottle after the test, in millimeters (mm): D
Wherein:
Liquid level drop, in millimeters (mm); L
-Liquid level height before the test, in millimeters (mm); Liquid level height after the test, in millimeters (mm). 6.8 Acetaldehyde content
There are two methods for testing acetaldehyde content. Method 1 is the headspace method: Method 2 is the crushing method (see Appendix B). 6.8.1 Instrument (Method 1)
Gas chromatograph, hydrogen flame ionization detector. Recommended chromatographic conditions:
Column temperature: 140℃
Inlet temperature: 170℃
Detector temperature: 200℃
Carrier gas (nitrogen) flow rate: 40mL/min
QB/T1868-2004
6.8.2 Test steps
6.8.2.1 Take 10 sample bottles, flush them with 99.9% pure nitrogen to drive out the air in the bottles, and then quickly seal them with bottle caps with rubber stoppers and gaskets. The samples are stored at a constant temperature of (23±1)℃ for 24h. 6.8.2.2 Take 3 1L (or other capacity) glass bottles, and use 99.9% nitrogen is used to flush and drive away the air in the bottle, and the bottle cap with a rubber stopper and a gasket is quickly sealed. 4 μL (or other amount) of acetaldehyde standard solution of known mass concentration (about 1 mg/mL) is injected, and it is completely vaporized at a temperature of about 40°C. Then 5 mL of gas is drawn from the bottle and injected into the gas chromatograph to obtain the area of a known standard peak. The average value of the three test results is taken. 5 mL of gas is drawn from the sample bottle to be tested that has been placed for 24 hours and injected into the gas chromatograph to obtain the peak area of the concentration to be tested. The acetaldehyde content is calculated according to formula (9).
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Where:
-Acetaldehyde content in the sample bottle to be tested, in micrograms per liter (ug/L);C
-Acetaldehyde content in the standard sample bottle with known concentration, in milligrams per milliliter (mg/mL):Peak area of acetaldehyde content in the sample bottle to be tested;htt
QB/T1868—-2004
-Peak area of acetaldehyde content in the standard sample bottle with known concentration-Injection volume in the standard sample bottle, in microliter (uL);Volume of the glass bottle, in liter (L). 6.9 Hygiene indicators
Carry out according to the inspection method in GB13113.
7 Inspection rules
7.1 Inspection classification
7.1.1 Factory inspection
The items of factory inspection are: 5.1 Appearance, 5.3 Height deviation, 5.5 Capacity deviation, vertical load pressure, drop performance, and internal pressure resistance in Table 7.
Type inspection
7. 1.2. 1
Type inspection should be carried out in any of the following situations: trial production of new products or old products transferred to the factory: after formal production, when the production process is changed or new raw materials are used for production, which may affect product performance; during normal production, type inspection should be carried out at least once every six months; when production is resumed after suspension for more than three months; when the factory inspection results are significantly different from the last type inspection: when the national quality supervision agency proposes the requirement of type inspection. The type inspection items are all the items required by this standard. 7. 1.2.2
7.2 Batching and Sampling
7.2.1 Batching
Products are inspected in batches. Products of the same type produced continuously with the same brand and the same process are considered as a batch. Each batch shall not exceed 1 million pieces. If the number is less than 1 million pieces, the production volume of no more than 3 days shall be considered as a batch. 7.2.2 Random sampling is used. The appearance, height deviation, verticality deviation and capacity deviation shall be in accordance with the requirements of Table 10. Physical and mechanical properties are tested in batches. 50 sample bottles are selected from each batch for inspection. Table 10
Batch N
91~150
151~280
281~500
501~1200
12 01~3200
320110000
10001~35000
35001~150000
150001~500 000
≥500001
7.3 Determination of qualified batches
Sample size n
Acceptance number Ac
Unit: piece
Rejection number Re
Appearance, height deviation, verticality deviation and capacity deviation shall adopt the normal inspection single sampling method in Table 2-A of GB/T2828.1-2003. 10
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