Some standard content:
ICS55.040
Packaging Industry Standard of the People's Republic of China
BB/T0012—2014
Replaces BB/T0012—2008
Polyvinylidene chloride (PVDC) coating film Coated Film2014-07-09 Issued
2014-11-01 Implementation
Ministry of Industry and Information Technology of the People's Republic of China Scraping Auxiliary Code Lian Zhen
Foreword,
Normative references
Classification and specifications
Requirements·
Test methods
Inspection rules·
Marking, packaging, transportation and storage
BB/T0012-2014
BB/T0012-2014
This standard is revised according to the rules given in CB/T1.1-2009 "Guidelines for standardization work Part 1: Structure and compilation of standards"
This standard Compared with BB/T0012-2008, some physical performance indicators have been adjusted. The main changes are as follows: - Tensile strength index, BOPP coated film, longitudinal direction is adjusted from "≥130" to "≥110", and transverse direction is adjusted from "≥200" to "≥180"; BOPET coated film, longitudinal direction is adjusted from "≥100" to "≥135", and transverse direction is adjusted from "≥100" to "≥145". - Elongation at break index, BOPP coated film, longitudinal direction is adjusted from "≤120" to "≤180"; BOPET coated film, longitudinal direction is adjusted from "≤160" to "≤200"; B0PA coated film, longitudinal direction is adjusted from "≤100" to "≤180", and transverse direction is adjusted from "≤65" to ≤180". Heat sealing strength index, heat-sealing BOPP coated film, adjusted from "≥0.8" to "2.0". Water vapor transmission rate index, BOPET coated film, adjusted from "≤15.0" to "≤13.0"; BOPA coated film, adjusted from "≤20.0" to "≤15.0".
Oxygen transmission rate index, heat-sealable BOPP coated film, adjusted from "≤55.0" to "≤40.0": heat-sealable BOPET coated film, adjusted from "≤45.0" to "≤30.0". - The test method for water vapor transmission rate is adjusted from "performed according to GB/T1037 condition B, ISO15106.1 or ISO15106.2, IS015106.3, arbitration is carried out according to GB/T1037" to "performed according to GB/T21529, and the content contact surface is facing the low water vapor concentration side during the test".
The oxygen permeability test method is adjusted from "performed in accordance with GB/T19789" to "performed in accordance with GB/T19789, with the surface of the contents in contact facing the oxygen low concentration side". This standard is proposed by the China Packaging Federation. This standard is under the jurisdiction of the National Technical Committee for Packaging Standardization (SAC/TC49). The drafting units of this standard are: Hainan Sino Industrial Co., Ltd., Henan Weiruigut Packaging and Printing Co., Ltd., Zhejiang Senland Packaging Technology Co., Ltd., Wuxi Boli Packaging Materials Co., Ltd., Henan Weihua Packaging Co., Ltd. The main drafters of this standard are: Hu Lianqin, Yu Huadong, Shen Zhihui, Li Qiuhe, Huang Hongcun, Miao Xiaosheng. This standard replaces the previous versions of the standard issued in the years: -BB/T0012—1997;
—BB/T0012—2008.
1 Scope
Polyvinylidene chloride (PVDC) coated film BB/T0012--2014
This standard specifies the classification, requirements, test methods, inspection rules and marking, packaging, transportation and storage of polyvinylidene chloride (PVDC) coated film (hereinafter referred to as coated film). This standard applies to films made of biaxially oriented polypropylene (BOPP), biaxially oriented polyester (BOPET) and biaxially oriented polyamide (BOPA) films as substrate films and coated with polyvinylidene chloride emulsion. 2 Normative references
The following documents are indispensable for the application of this standard. For all dated references, only the version with the date is applicable to this standard. For all undated references, the latest version (including all amendments) is applicable to this standard. GB/T191 Pictorial marking for packaging, storage and transportation
GB/T1040.3-2006 Determination of tensile properties of plastics Part 3: Test conditions for films and sheets GB/T2410 Determination of light transmittance and haze of transparent plastics GB/T2828.1 Sampling inspection procedure by 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 Determination of thickness of plastic films and sheets by mechanical measurement method GB/T6672
GB/T6673||tt ||Determination of length and width of plastic films and sheets GB/T10006
Determination of friction coefficient of plastic films and sheets GB/T14216
Determination of wetting tension of plastic films and sheets
CB/T19789
Oxygen permeability test of plastic films and sheets for packaging materials Coulometric test method GB/T21529
Classification and specification
3.1 Classification
Determination of water vapor permeability of plastic films and sheets Electrolytic sensor method 3.1.1 According to heat sealing performance, it is divided into heat sealing type and non-heat sealing type. 3.1.2 According to the base film, it is divided into BOPP coated film, BOPET coated film and BOPA coated film. 3.2 Specifications
Thickness range: 9μm~70μm; width range: 25mm~2500mm; length range: 2000m~36000m; special specifications are agreed upon by both parties.
4 Requirements
4.1 Appearance
The appearance shall meet the requirements of Table 1.
TiiKAoNiiKAca
BB/T0012-2014
End face winding unevenness, mm
4.2 Dimension deviation
Dimension deviation shall meet the requirements of Table 2.
Width deviation, mm
Number of joints, pcs/roll
Length of each section, m
Maximum thickness deviation, %
Average thickness deviation, %
Physical and mechanical properties
Table 1 Appearance requirements
Width ≤ 500mm
Width > 500mm
Film wrinkles
Film surface contamination
End face scratches
Chu cloth stripes
Table 2 Dimensions Deviation
Width 500mm
Width>500mm
Film roll length ≤3000
Film roll length>3000
Film roll length ≤3000
Film roll length>3000
Thickness 9μm~29μm
Thickness ≥30μm
Thickness 9μm-29um
Thickness ≥30μm
The physical and mechanical properties shall meet the requirements of Table 3. Table 3
Tensile strength, MPa
Elongation at break, %
Physical and mechanical properties
BOPP coated film
≥110
BOPET coated film
≥135
≥145
Not allowed
Not allowed
Not allowed
Not allowed
Slightly allowed
Slightly allowed
≥200
BOPA coated film
≥120
Heat shrinkage, %
Dynamic friction coefficient
(Xu layer/coating)
Wetting tension
Haze, %
(coating surface), mN/m||t t||Heat sealing strength, N/15mm
Heat sealing type
Non-heat sealing type
Heat sealing type
Non-heat sealing type
Heat sealing type
Non-heat sealing type
Water vapor transmission rate, /(m2.24h)
Oxygen transmission rate
cm/(m2.24h)
4.4 Hygienic properties
Heat sealing type
Non-heat type
Table 3 (End)
BOPP coated film
BOPET coated film
BB/T0012-2014
BOPA coated film
The hygienic properties of the coated film shall comply with the relevant national standards and the coated film in direct contact with food shall comply with the relevant national laws and regulations.
Test method
5.1 Sampling
Remove several layers from the surface of the finished film roll, take 10 layers for appearance, specification and physical and mechanical properties testing, and take about 10m for storage. 5.2 Standard environment for sample state adjustment and testing According to the provisions of GB/T2918-1998, the sample state adjustment is carried out in a standard environment with a temperature of 23℃±2℃ and a relative humidity of 50%±10%. The state adjustment is not less than 4h, and the test is carried out under this condition. 5.3 Appearance
Visual inspection is carried out under natural light. The unevenness of the end face winding is measured with a ruler with an accuracy of 0.5mm. 5.4 Width deviation and length of each section
According to GB/T6673.
5.5 Thickness deviation
According to GB/T6672. Take out 5 layers of samples from the whole sample, overlap and measure, and the measured value divided by 5 is the thickness at that place. The thickness deviation is calculated using the maximum thickness deviation value. 5.6 Tensile strength and elongation at break
According to GB/T1040.3. Sample: length 150rmm×width (15mm±0.1mm), clamp spacing 100mm, tensile speed 200mm/min±20mm/min.
iiKAoNiiKAca
BB/T0012—2014
5.7 Heat shrinkage
5.7.1 Test instrument:
a) Blast thermostatic box;
b) Vernier caliper with minimum scale value of 0.02mm;c) Stainless steel plate;
d) Stopwatch.
5.7.2 Sample: Cut 5 120mm×120mm samples uniformly in the width direction of the film roll. Mark the middle of the sample 10mm away from the edge in the longitudinal and transverse directions, and accurately measure the length between the marks. 5.7.3 Place the sample flat on a stainless steel plate in a constant temperature oven with air blowing at the specified temperature. The stainless steel plate is located in the middle of the constant temperature oven. No air blowing is performed during the test. Take the sample out after the test time is reached. After cooling to the ambient temperature, measure the longitudinal and transverse marking lengths. Calculate the longitudinal and transverse thermal shrinkage rates according to formula (1) and take the arithmetic mean of the five samples. - 2
Where:
T—thermal shrinkage rate, %;
Li——length before heating, mm;
L——length after heating, mm.
5.7.4 Temperature and time control:
a) BOPP coated film, temperature 120℃±2℃, heating time 2min: b) BOPET coated film, temperature 150℃+2℃, heating time 30min; c) BOPA coated film, temperature 160℃±2℃, heating time 5min. 5.8 Haze
According to GB/T2410. bZxz.net
5.9 Friction coefficient
According to CB/T10006.
5.10 Wetting tension
According to CB/T14216.
5.11 Heat seal strength
5.11.1 Heat sealer: temperature fluctuation ±2.0℃. 5.11.2 Heat seal parameters are set as follows: temperature 127℃, time 1.0s, pressure 0.14MPa. (1)
5.11.3 Sample: Take 5 samples, heat seal the sample with the coated surface facing each other on the heat sealer, cut them evenly in the width direction of the die roll, the sample width is 15mm±0.1mm, the length is 150mm, heat seal the sample with the coated surface facing each other on the heat sealer. 5.11.4 Take the heat seal part as the center line, clamp the two ends of the sample on the two fixtures of the test machine respectively. The test longitudinal axis should coincide with the center line of the upper and lower fixtures, and the tightness should be appropriate to prevent the sample from slipping and breaking in the fixture. The distance between the fixtures is 100mm, and the test speed of the tensile machine is 100±10mm/min. Read the maximum load when the heat seal of the sample breaks. If the sample does not break at the heat seal, the sample is invalid and another sample is taken for re-test. Take the arithmetic mean of 5 samples and express it in N/15mm. 5.12 Water vapor transmission rate (WVTR)
Perform according to GB/T21529. During the test, the content contact surface is facing the water vapor low concentration side. 5.13 Oxygen transmission rate (OTR)
Perform according to CB/T19789. During the test, the content contact surface is facing the oxygen low concentration side. 5.14 Hygienic performance
Perform according to relevant national hygiene standards.
6 Inspection rules
6.1 Batch
BB/T0012—2014
The acceptance of coating films is based on batches. The coating films continuously manufactured under the same raw materials, the same formula and stable process conditions are considered as a batch, and each batch shall not exceed 50t.
6.2 Sampling
Appearance and dimensional deviations shall be carried out in accordance with the normal inspection secondary sampling plan in GB/T2828.1. Each roll shall be a sample unit, and general inspection level II shall be adopted; the acceptance quality limit (AQL) is 6.5, and sufficient samples for testing of physical and mechanical properties and hygienic properties shall be cut from any sample drawn, see Table 4.
Table 4 Sampling and determination plan for inspection of appearance and dimensional deviation Batch range N
151~280
281~500
501-1200
≥1201
Sample size
Cumulative sample size
iiKAoNiiKAca
Acceptance number Ac
Rejection number Re
BB/T00122014
6.3 Factory inspection
The factory inspection items include 4.14.2 and items 4 to 7 in Table 3. 6.4 Type inspection
Type inspection items are all technical requirements in Chapter 4 of this standard. Type inspection shall be carried out when one of the following situations occurs: New product identification or old product transfer and production: a) After formal production, if there are major changes in structure, raw materials, and processes that may affect product performance: c) During normal production, it shall be carried out once a year; d) When the national quality supervision agency proposes type inspection requirements: e) When the product is discontinued for more than half a year and production is resumed; When the factory inspection results are significantly different from the last type inspection. 6.5 Judgment rules
6.5.1 The judgment of appearance and dimensional deviation shall be carried out in accordance with the provisions of Table 4. 6.5.2 If there are unqualified items in the physical and mechanical properties test results of the coated film, double sampling shall be carried out in the original batch, and the unqualified items shall be retested. If all the retest results are qualified, the batch shall be qualified; if the retest results are still unqualified, the entire batch shall be unqualified. 6.5.3 If one of the hygiene indicators fails the inspection, the batch of products is judged to be unqualified. 7. Marking, packaging, transportation and storage
7.1 Marking
The outer packaging marking of the product shall comply with the provisions of GB/T191. There shall be a certificate of conformity inside the film roll or on the packaging, indicating the product name, specification, quality, production date, grade, inspection stamp, company name and address.
7.2 Packaging
The packaging shall be light-proof, dust-proof and protect the product. The specific method shall be agreed upon by the supply and demand parties. 7.3 Transportation
During transportation, it shall be handled with care to prevent squeezing, mechanical collision and sun and rain. 7.4 Storage
7.4.1 The coated film shall be stored in a clean and dry warehouse; away from heat sources, toxic and harmful pollution sources, and avoid direct sunlight. 7.4.2 The storage period shall not exceed one year from the date of production. 6
HiiKANii KAca2 Samples: Cut 5 120mm×120mm samples evenly in the width direction of the film roll. Mark the sample 10mm away from the edge in the middle of the longitudinal and transverse directions, and accurately measure the length between the marks. 5.7.3 Place the sample flat on a stainless steel plate in a constant temperature oven with air blowing at the specified temperature, with the stainless steel plate located in the middle of the constant temperature oven. Do not blow air during the test. Take it out after the test time is reached. After cooling to the ambient temperature, measure the longitudinal and transverse marked lengths, calculate the longitudinal and transverse heat shrinkage rates respectively according to formula (1), and take the arithmetic mean of the 5 samples. - 2
Where:
T—heat shrinkage rate, %;
Li——length before heating, mm;
L——length after heating, mm.
5.7.4 Temperature and time control:
a) BOPP coated film, temperature 120℃±2℃, heating time 2min: b) BOPET coated film, temperature 150℃+2℃, heating time 30min; c) BOPA coated film, temperature 160℃±2℃, heating time 5min. 5.8 Haze
According to GB/T2410.
5.9 Friction coefficient
According to CB/T10006.
5.10 Wetting tension
According to CB/T14216.
5.11 Heat seal strength
5.11.1 Heat sealer: temperature fluctuation ±2.0℃. 5.11.2 Heat seal parameters are set as: temperature 127℃, time 1.0s, pressure 0.14MPa. (1)
5.11.3 Samples: Take 5 samples and heat-seal the coated surfaces of the samples on the heat sealer. Cut them evenly in the width direction of the mold roll. The sample width is 15mm±0.1mm and the length is 150mm. Heat-seal the coated surfaces of the samples on the heat sealer. 5.11.4 With the heat seal part as the center line, clamp the two ends of the sample on the two fixtures of the testing machine respectively. The test longitudinal axis should coincide with the center line of the upper and lower fixtures, and the tightness should be appropriate to prevent the sample from slipping and breaking in the fixture. The distance between the fixtures is 100mm. The test speed of the tensile machine is 100±10mm/min. Read the maximum load when the heat seal of the sample breaks. If the sample does not break at the heat seal, the sample is invalid and another sample is taken to make up. Take the arithmetic mean of the 5 samples and express it in N/15mm. 5.12 Water vapor transmission rate (WVTR)
Perform the test in accordance with GB/T21529. During the test, the surface in contact with the contents shall be facing the side with low water vapor concentration. 5.13 Oxygen transmission rate (OTR)
Perform the test in accordance with CB/T19789. During the test, the surface in contact with the contents shall be facing the side with low oxygen concentration. 5.14 Hygienic performance
Perform the test in accordance with relevant national health standards.
6 Inspection rules
6.1 Batch
BB/T0012—2014
The acceptance of coating films is based on batches. The coating films continuously manufactured under the same raw materials, the same formula and stable process conditions are considered as a batch, and each batch shall not exceed 50t.
6.2 Sampling
The appearance and dimensional deviation shall be carried out in accordance with the normal inspection secondary sampling plan specified in GB/T2828.1. Each roll shall be a sample unit and general inspection level II shall be adopted; the acceptance quality limit (AQL) shall be 6.5. For physical, mechanical and hygienic properties, sufficient samples for testing shall be cut from any sample drawn, see Table 4.
Table 4 Sampling and determination plan for inspection of appearance and dimensional deviation Batch range N
151~280
281~500
501-1200
≥1201
Sample size
Cumulative sample size
iiKAoNiiKAca
Acceptance number Ac
Rejection number Re
BB/T00122014
6.3 Factory inspection
The factory inspection items include 4.14.2 and items 4 to 7 in Table 3. 6.4 Type inspection
Type inspection items are all technical requirements in Chapter 4 of this standard. Type inspection shall be carried out when one of the following situations occurs: New product identification or old product transfer and production: a) After formal production, if there are major changes in structure, raw materials, and processes that may affect product performance: c) During normal production, it shall be carried out once a year; d) When the national quality supervision agency proposes type inspection requirements: e) When the product is discontinued for more than half a year and production is resumed; When the factory inspection results are significantly different from the last type inspection. 6.5 Judgment rules
6.5.1 The judgment of appearance and dimensional deviation shall be carried out in accordance with the provisions of Table 4. 6.5.2 If there are unqualified items in the physical and mechanical properties test results of the coated film, double sampling shall be carried out in the original batch, and the unqualified items shall be retested. If all the retest results are qualified, the batch shall be qualified; if the retest results are still unqualified, the entire batch shall be unqualified. 6.5.3 If one of the hygiene indicators fails the inspection, the batch of products is judged to be unqualified. 7. Marking, packaging, transportation and storage
7.1 Marking
The outer packaging marking of the product shall comply with the provisions of GB/T191. There shall be a certificate of conformity inside the film roll or on the packaging, indicating the product name, specification, quality, production date, grade, inspection stamp, company name and address.
7.2 Packaging
The packaging shall be light-proof, dust-proof and protect the product. The specific method shall be agreed upon by the supply and demand parties. 7.3 Transportation
During transportation, it shall be handled with care to prevent squeezing, mechanical collision and sun and rain. 7.4 Storage
7.4.1 The coated film shall be stored in a clean and dry warehouse; away from heat sources, toxic and harmful pollution sources, and avoid direct sunlight. 7.4.2 The storage period shall not exceed one year from the date of production. 6
HiiKANii KAca2 Samples: Cut 5 120mm×120mm samples evenly in the width direction of the film roll. Mark the sample 10mm away from the edge in the middle of the longitudinal and transverse directions, and accurately measure the length between the marks. 5.7.3 Place the sample flat on a stainless steel plate in a constant temperature oven with air blowing at the specified temperature, with the stainless steel plate located in the middle of the constant temperature oven. Do not blow air during the test. Take it out after the test time is reached. After cooling to the ambient temperature, measure the longitudinal and transverse marked lengths, calculate the longitudinal and transverse heat shrinkage rates respectively according to formula (1), and take the arithmetic mean of the 5 samples. - 2
Where:
T—heat shrinkage rate, %;
Li——length before heating, mm;
L——length after heating, mm.
5.7.4 Temperature and time control:
a) BOPP coated film, temperature 120℃±2℃, heating time 2min: b) BOPET coated film, temperature 150℃+2℃, heating time 30min; c) BOPA coated film, temperature 160℃±2℃, heating time 5min. 5.8 Haze
According to GB/T2410.
5.9 Friction coefficient
According to CB/T10006.
5.10 Wetting tension
According to CB/T14216.
5.11 Heat seal strength
5.11.1 Heat sealer: temperature fluctuation ±2.0℃. 5.11.2 Heat seal parameters are set as: temperature 127℃, time 1.0s, pressure 0.14MPa. (1)
5.11.3 Samples: Take 5 samples and heat-seal the coated surfaces of the samples on the heat sealer. Cut them evenly in the width direction of the mold roll. The sample width is 15mm±0.1mm and the length is 150mm. Heat-seal the coated surfaces of the samples on the heat sealer. 5.11.4 With the heat seal part as the center line, clamp the two ends of the sample on the two fixtures of the testing machine respectively. The test longitudinal axis should coincide with the center line of the upper and lower fixtures, and the tightness should be appropriate to prevent the sample from slipping and breaking in the fixture. The distance between the fixtures is 100mm. The test speed of the tensile machine is 100±10mm/min. Read the maximum load when the heat seal of the sample breaks. If the sample does not break at the heat seal, the sample is invalid and another sample is taken to make up. Take the arithmetic mean of the 5 samples and express it in N/15mm. 5.12 Water vapor transmission rate (WVTR)
Perform the test in accordance with GB/T21529. During the test, the surface in contact with the contents shall be facing the side with low water vapor concentration. 5.13 Oxygen transmission rate (OTR)
Perform the test in accordance with CB/T19789. During the test, the surface in contact with the contents shall be facing the side with low oxygen concentration. 5.14 Hygienic performance
Perform the test in accordance with relevant national health standards.
6 Inspection rules
6.1 Batch
BB/T0012—2014
The acceptance of coating films is based on batches. The coating films continuously manufactured under the same raw materials, the same formula and stable process conditions are considered as a batch, and each batch shall not exceed 50t.
6.2 Sampling
The appearance and dimensional deviation shall be carried out in accordance with the normal inspection secondary sampling plan specified in GB/T2828.1. Each roll shall be a sample unit and general inspection level II shall be adopted; the acceptance quality limit (AQL) shall be 6.5. For physical, mechanical and hygienic properties, sufficient samples for testing shall be cut from any sample drawn, see Table 4.
Table 4 Sampling and determination plan for inspection of appearance and dimensional deviation Batch range N
151~280
281~500
501-1200
≥1201
Sample size
Cumulative sample size
iiKAoNiiKAca
Acceptance number Ac
Rejection number Re
BB/T00122014
6.3 Factory inspection
The factory inspection items include 4.14.2 and items 4 to 7 in Table 3. 6.4 Type inspection
Type inspection items are all technical requirements in Chapter 4 of this standard. Type inspection shall be carried out when one of the following situations occurs: New product identification or old product transfer and production: a) After formal production, if there are major changes in structure, raw materials, and processes that may affect product performance: c) During normal production, it shall be carried out once a year; d) When the national quality supervision agency proposes type inspection requirements: e) When the product is discontinued for more than half a year and production is resumed; When the factory inspection results are significantly different from the last type inspection. 6.5 Judgment rules
6.5.1 The judgment of appearance and dimensional deviation shall be carried out in accordance with the provisions of Table 4. 6.5.2 If there are unqualified items in the physical and mechanical properties test results of the coated film, double sampling shall be carried out in the original batch, and the unqualified items shall be retested. If all the retest results are qualified, the batch shall be qualified; if the retest results are still unqualified, the entire batch shall be unqualified. 6.5.3 If one of the hygiene indicators fails the inspection, the batch of products is judged to be unqualified. 7. Marking, packaging, transportation and storage
7.1 Marking
The outer packaging marking of the product shall comply with the provisions of GB/T191. There shall be a certificate of conformity inside the film roll or on the packaging, indicating the product name, specification, quality, production date, grade, inspection stamp, company name and address.
7.2 Packaging
The packaging shall be light-proof, dust-proof and protect the product. The specific method shall be agreed upon by the supply and demand parties. 7.3 Transportation
During transportation, it shall be handled with care to prevent squeezing, mechanical collision and sun and rain. 7.4 Storage
7.4.1 The coated film shall be stored in a clean and dry warehouse; away from heat sources, toxic and harmful pollution sources, and avoid direct sunlight. 7.4.2 The storage period shall not exceed one year from the date of production. 6
HiiKANii KAca2 Sampling
Appearance and dimensional deviation shall be carried out in accordance with the normal inspection secondary sampling plan specified in GB/T2828.1. Each roll shall be a sample unit, and general inspection level II shall be adopted; the acceptance quality limit (AQL) shall be 6.5. For physical, mechanical and hygienic properties, sufficient samples for testing shall be cut from any sample drawn, see Table 4.
Table 4 Sampling and determination plan for inspection of appearance and dimensional deviation Batch range N
151~280
281~500
501-1200
≥1201
Sample size
Cumulative sample size
iiKAoNiiKAca
Acceptance number Ac
Rejection number Re
BB/T00122014
6.3 Factory inspection
The factory inspection items include 4.14.2 and items 4 to 7 in Table 3. 6.4 Type inspection
Type inspection items are all technical requirements in Chapter 4 of this standard. Type inspection shall be carried out when one of the following situations occurs: New product identification or old product transfer and production: a) After formal production, if there are major changes in structure, raw materials, and processes that may affect product performance: c) During normal production, it shall be carried out once a year; d) When the national quality supervision agency proposes type inspection requirements: e) When the product is discontinued for more than half a year and production is resumed; When the factory inspection results are significantly different from the last type inspection. 6.5 Judgment rules
6.5.1 The judgment of appearance and dimensional deviation shall be carried out in accordance with the provisions of Table 4. 6.5.2 If there are unqualified items in the physical and mechanical properties test results of the coated film, double sampling shall be carried out in the original batch, and the unqualified items shall be retested. If all the retest results are qualified, the batch shall be qualified; if the retest results are still unqualified, the entire batch shall be unqualified. 6.5.3 If one of the hygiene indicators fails the inspection, the batch of products is judged to be unqualified. 7. Marking, packaging, transportation and storage
7.1 Marking
The outer packaging marking of the product shall comply with the provisions of GB/T191. There shall be a certificate of conformity inside the film roll or on the packaging, indicating the product name, specification, quality, production date, grade, inspection stamp, company name and address.
7.2 Packaging
The packaging shall be light-proof, dust-proof and protect the product. The specific method shall be agreed upon by the supply and demand parties. 7.3 Transportation
During transportation, it shall be handled with care to prevent squeezing, mechanical collision and sun and rain. 7.4 Storage
7.4.1 The coated film shall be stored in a clean and dry warehouse; away from heat sources, toxic and harmful pollution sources, and avoid direct sunlight. 7.4.2 The storage period shall not exceed one year from the date of production. 6
HiiKANii KAca2 Sampling
Appearance and dimensional deviation shall be carried out in accordance with the normal inspection secondary sampling plan specified in GB/T2828.1. Each roll shall be a sample unit, and general inspection level II shall be adopted; the acceptance quality limit (AQL) shall be 6.5. For physical, mechanical and hygienic properties, sufficient samples for testing shall be cut from any sample drawn, see Table 4.
Table 4 Sampling and determination plan for inspection of appearance and dimensional deviation Batch range N
151~280
281~500
501-1200
≥1201
Sample size
Cumulative sample size
iiKAoNiiKAca
Acceptance number Ac
Rejection number Re
BB/T00122014
6.3 Factory inspection
The factory inspection items include 4.14.2 and items 4 to 7 in Table 3. 6.4 Type inspection
Type inspection items are all technical requirements in Chapter 4 of this standard. Type inspection shall be carried out when one of the following situations occurs: New product identification or old product transfer and production: a) After formal production, if there are major changes in structure, raw materials, and processes that may affect product performance: c) During normal production, it shall be carried out once a year; d) When the national quality supervision agency proposes type inspection requirements: e) When the product is discontinued for more than half a year and production is resumed; When the factory inspection results are significantly different from the last type inspection. 6.5 Judgment rules
6.5.1 The judgment of appearance and dimensional deviation shall be carried out in accordance with the provisions of Table 4. 6.5.2 If there are unqualified items in the physical and mechanical properties test results of the coated film, double sampling shall be carried out in the original batch, and the unqualified items shall be retested. If all the retest results are qualified, the batch shall be qualified; if the retest results are still unqualified, the entire batch shall be unqualified. 6.5.3 If one of the hygiene indicators fails the inspection, the batch of products is judged to be unqualified. 7. Marking, packaging, transportation and storage
7.1 Marking
The outer packaging marking of the product shall comply with the provisions of GB/T191. There shall be a certificate of conformity inside the film roll or on the packaging, indicating the product name, specification, quality, production date, grade, inspection stamp, company name and address.
7.2 Packaging
The packaging shall be light-proof, dust-proof and protect the product. The specific method shall be agreed upon by the supply and demand parties. 7.3 Transportation
During transportation, it shall be handled with care to prevent squeezing, mechanical collision and sun and rain. 7.4 Storage
7.4.1 The coated film shall be stored in a clean and dry warehouse; away from heat sources, toxic and harmful pollution sources, and avoid direct sunlight. 7.4.2 The storage period shall not exceed one year from the date of production. 6
HiiKANii KAca
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