This standard specifies the product classification, requirements, test methods, inspection rules and marking, packaging, transportation, storage, etc. of polypropylene sheets (hereinafter referred to as "sheets"). This standard applies to sheets made of polypropylene resin as the main raw material through extrusion molding. QB/T 2471-2000 Polypropylene (PP) extruded sheets QB/T2471-2000 Standard download decompression password: www.bzxz.net

Classification No. 13.3
Reservation No. May 152000
Light Industry Standard of the People's Republic of China
QB/T 2471-- 2000
Polypropylene (PP) extruded sheet
2000-03-30 Issued by State Bureau of Light Industry, implemented on August 1, 2000, QB/T2471-2000. This standard is a revision of QB/T3629-09 "Polypropylene (PI) extruded sheet" (the standard is based on the international standard No. 112 issued by the State Administration of Industry and Commerce in 1999, with the same period of time ZBG33006-90). The six requirements of this standard QB/T362999 are as follows. The original standard has two thickness grades, and this standard has one grade. --- The original standard has an upper limit difference of 13%, which is increased to 10% in this standard. Standard = Equivalent to the latest German: Industry Standard D: N16971-7982 "Technical Conditions for Polypropylene (PP) Extruded Sheet Supply Plates".
This standard is proposed by the State Light Industry Bureau! ! This standard is sponsored by the National Standardization Center for Materials Products. This standard is funded by the Beijing Municipal Research Institute. The main drafters of this standard are: San Peilin, Liu Xiaojing, Bai. From the implementation of this standard, the industry standard QB/T3629-1999 Polypropylene (P) Extruded Sheet 3 issued by the former Ministry of Light Industry will be abolished.
Light Industry Industry Standard of the People's Republic of China
Polypropylene (PP) Extruded Sheet
QB/T 2171-2000
Yizun QB/T3629-1999
yun standard specifies the product classification, requirements, test methods, inspection rules and marking, packaging, transportation, and application of civil C-type sheet materials (hereinafter referred to as "sheet materials"). The standard is applicable to sheets made of ethylene as the main raw material through extrusion molding. 2 The provisions of the standard shall become the text of this standard through reference in this standard ：At the time of publication of this standard, the most recent standards shown are valid: All standards are subject to revision. Users of standard sections should consider using the latest versions of the following standards.
G3T10401992 Plastics tensile strength test method C2828-1987 Batch inspection sampling column number cold tear column table (use continuous batch inspection) Plastic film and sheeting mechanical testing method GE/T6672--1986
GE/T 6673—1986
G396881988
3 Classification
Standard for the length and width of plastic sheets Polypropylene moldings for food packaging are divided into two categories: depolymerized and condensed
4 Requirements
1 Classification and adjustment
4.1.1 The thickness and resistance should meet the requirements of Table 1.
4.1.2 The width can be determined according to user requirements: the maximum deviation is 31%.
1.13 The length can be determined according to user requirements, and each length should not exceed 1. The length of each section should not exceed 20m.
The surface of the material should be smooth and neat, without bubbles, which will affect the quality of the frame. Approved by National Light Industry Standard 2000-D3-30
Implementation on 2000-08-01
4.3 Mechanical properties of sheet materials shall be consistent with those in Table 2, Table 2 Mechanical properties of sheet materials shall be consistent with those in Table 2 (taping)
Dimensional change in dimension
Note: Sheets less than 0.5mm are not considered for industrialization, and the dimensional change rate in dimension is not considered. 4.4 For the packaging of finished products, the hygienic indicators of the sheet materials shall be specified in G196. 5 Test method
White 24 No selection: The largest sheet should be discarded first, and the 2m sheet should be cut as the sample. 5.2 The state adjustment test of the sample should be carried out at a temperature of 23°C (23°C): the state adjustment and machine performance test should be carried out for no less than 8 hours. 5.3 Determination of the size difference
The thickness and width of the sheet should be measured in accordance with the provisions of GD/T6672 and B/6673. 5.4 Appearance inspection
The sample is tested by the sample. 5.5 Determination of tensile strength
The sheet is tested in accordance with the provisions of GB/T1040, using three types of tests, and 5 tests are carried out according to the number of materials. Tensile speed (5U±5) min. The test results are expressed as the arithmetic mean of the vertical and horizontal test results, and the effective number is taken. 5.8 Determination of longitudinal dimensional change rate
5.6.1 Instrument
a) Minimum scale value: 0.5tmum Gauge: 5) Hot air drying oven with temperature control accuracy of ±3℃, 5.6.2 Test
Specimen size: 100mm×100mm, specimen shall not be more than 3 pieces. 5.6.3 Test step
5.6.3.1 Mark as shown in Figure 1, take the rate, L:: is the original length of the test. 5.6.3.2 Place the sample in a 150°C cold box with ventilation, and heat it to 200°C (3+1) mm below the temperature. Then turn off the flash heating source and lower the temperature in the box to 120°C under normal ventilation conditions. Take out the sample and place it at room temperature for 1 hour. The size change of the square sample should not be blocked. The test sample should be placed flat in the cold box with a cover of about 3 mm thick and the number of materials should be determined. 5.6.3.3 Single and double steps 5.6.3.1, the measured value is based on the test sample length. 5.6.3.4 Observation of the appearance of the sample after the size change shall not be abnormal, and the phenomenon of Kongli recording is recorded. 2
5.6.4 Technical verification and representation
G8/T 2471 -2000
Material fabric
1 Schematic diagram of the sample for diffuse length
The length change rate is calculated according to the formula,
Where: S
The cumulative length change, %:
The initial length of the sample: mI:
--The length after the test: rrm
6.G.4.2 The test results are expressed in the form of the average of the minimum length change rate, take 2 significant figures, 6 Inspection rules
6.1 The same type of sheet materials produced by the same type, formula and process conditions are grouped as one batch. Each batch The delivery date shall not exceed 1Ut. One delivery can be composed of multiple batches, and the batch number shall be noted when the payment is made. 6.2 Inspection classification and date
6.2.1 Factory inspection
The delivery inspection of sheet materials shall include the items in 4.1, 4.2 and 4.3. The date of factory inspection shall be determined by negotiation between the two parties.
6.2.2 Type inspection
The sheet materials shall include all items in 4.1, 4.2, 4.3 and 4.4. Generally, the inspection shall be carried out at least 6 months after the following conditions are cleared. Q8/T 24712000
a, "production, "setting, "number of conditions, "art and service parts are more likely to affect the performance of the product: b) after the product is discontinued for a long time, the nuclear and production time
\) H factory inspection results and secondary dosage form inspection are more related to the use: 0, the national quality inspection requirements are required. 3.3 Xian sample
6.3.1 External change, current nuclear GBT2828 yuan selection, adoption! il. Party inspection: Talk about the sample sharing rate, the general registration water level 1 combined purchase volume level A05. is 6.5: according to Table 3 Table 3
push sample force dyeing and demarcation array
Batch sizebZxz.net
EG--35
S1~-156)
151--280
Sampling size
If the size does not meet the requirements, the batch will be determined as unqualified.
6.3.2 The performance of the item will be tested. Take 4 samples from the discarded samples and then take a single sample. 6.4 Forget the version, see
4.1~4.2.3. If there is one item that does not meet the requirements, the whole machine can be taken from the original pool to conduct a retest of the item: if it still fails, the batch will be determined as unqualified. Marking, loading, transportation, storage
7.1.1 Free product marking, product specification should include: product name, current price, trademark, batch number, product! 7.1.2 The product must be packaged in rolls, and each roll must not exceed 50kg. The length of the tube should not exceed 100mm. The package should be made of woven material and tied with woven material or push-in point: 7.3. During transportation, the following items should be kept: Do not use the equipment as much as possible, avoid damage, and avoid sun exposure. The equipment should be kept in a safe place. It should be kept at least 1 meter away from heat sources and should not come into contact with hydrocarbons. The equipment should be kept for no more than one year from the date of production.
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