Food packaging QS certification testing programs and methods required to "Author: Li Fu Technology Co., Ltd. Hangzhou products enjoy thinking"

Under "industrial production permit regulations", and since September 1, quality supervision departments will be fully investigated and dealt with No paper food packaging, containers and other products production license certification, and in the production, sale or use paper products the behavior of. With people's increasing attention to food safety, the problem of excessive residue of harmful substances in food packaging and printing has become the focus of consumers. It called on companies focus on green food production, but also should pay attention to environmental issues in the printing of packaging materials.

   GBT1014-2010 food packaging paper specifies the classification, requirements, test methods, inspection rules and signs, packaging, transportation and storage of food packaging paper. According to this standard, the physical indicators that need to be tested for food packaging include:

I. Quantitative grammage: According to the specified test method, the mass of paper and paperboard unit area is measured and expressed in grams per square meter ( g/m2 ). Test method: stack five samples along the longitudinal direction of the web into five layers, and then use a PN-SC100 round volumetric sampler to take 0.21 m2 of specimens in the transverse direction . Take a total of 10 samples and use the corresponding scores. Weighing of the value of the balance, the sample mass of 5g or less, with a scale value of 0.001g balance, the sample mass of 5g or more, with a division value of 0.01g balance, the sample mass of 50g or less, with indexing Value 0.1 g balance.

Second, the tensile index tensile index: tensile strength divided by the quantitative, expressed in Nm / g (Nm / g)

Test Method: Use a PN-PC15 standard paper cutter to cut a 15mm wide specimen and cut a sufficient number of specimens at a time to ensure that the paper and paperboard have 10 valid measurement results in both the machine and transverse directions. Then use the PN-TT300 computer tension tester to test, adjust the clamp spacing to 180mm , and then clamp the cut sample between the two clamps to adjust the tensile speed to ( 20 ± 5 ) mm/min . After good, the sample's quantitative input into the instrument, the instrument will automatically calculate the tensile index. The PN-TT300 Computer Tensile Tester is equipped with a built-in printer. It can also be connected to a computer to save data to a computer.

Third, water absorption: Water imbibition : paper and its products in the water absorption properties, expressed in g / m2 ( g/m2 ), does not apply to quantitative below 50g/m2, sizing degree is low or more The pinhole base paper and embossed paper do not apply to unsticed carton board. Test Method: first take with PN-CAC125 diameter Cobb sampler (125 ± 5) mm round specimens (front and back of each 5), then PN-COBB Cobb tester testing the absorbent, taken 100ml measuring cylinder Water is poured into the cylinder, and the well-weighed specimen is placed on the cylindrical surface of the cylinder. With the test face down, the gland is capped on the specimen and clamped to secure it with the barrel. Turn the cylinder 180 ° and open the chronograph. 10 to 15 s before the end of the water absorption , the cylinder is turned upright, the gland clamping device is released, and the sample is sampled. Note that after each test 5 times, test water should be replaced so as not to affect the test results. Immediately after reaching the specified water absorption time, place the sample that has been removed from the cylinder with the absorbent surface down on a pre-pasted absorbent paper (amount should be 200g/m2 to 250g/m2 ), and then take a sample. Put a piece of absorbent paper on it, and then immediately use a metal pressure roller to press the roller in and out of the 4s without any other pressure to suck the remaining water on the surface of the sample. Quickly remove the sample, wash the cotton in half, and then weigh it once and fold again, accurate to 0.001g . Cobb value C = (mass before water absorption after m2- absorbent mass m1) * 100.

Four tear index Tearing resistance: a pre-cut tear strength paper or paperboard to a desired length, the paper tearing expressed in millinewtons m² / g (mN.m² / g).. Test method: Cut ( 63 ± 0.5 ) mm × ( 50 ± 2 ) mm with a paper cutter, and test at least 5 times in vertical and horizontal directions. Use PN-TT1000 computer tear tester to select the appropriate sample. The pendulum or weight will be raised to the initial position and fixed with the pendulum's release mechanism, with the sample half facing the knife and the other half facing the knife. The side edges of the specimen should be neat and the bottom edge should be completely in contact with the bottom of the clip and clamped tightly. Use a cutter to cut the specimen into a clean knife and return the knife to its rest position. Quickly release the pendulum's release device. When swinging back, gently grasp it with your hand and read the data on the display. The PN-TT1000 computer tear tester is more convenient than the pointer tear tester, and the data is more reliable.

Five burst index Burst index:. Bursting divided by its quantitative, expressed in kPa m / g (kPa · m² / g). Test method: Using a PN-BSM160 paper bursting tester, the sample is cut into 70 mm × 70 mm , the quantitative input into the instrument, the instrument can measure the burst strength automatically calculate the burst index. The PN-BSM160 Paper Bursting Tester is equipped with a built-in printer. It can also be connected to a computer to save data to a computer.

Dust six degrees:. Dirt count: m area on the paper and board, the number of impurities having a certain area, or an area equivalent area per square meter paper or paperboard impurities (mm2). Test method: Cut the sample 250mm × 250mm , at least 4 , using a PN-PDT dust tester, put a cut sample on a rotatable sample plate, and press it with the four-point pincers on the plate. Under the fluorescent lamp, check the visible dust on the surface of the paper and cardboard. The distance between the eyes when viewed from the eye is 250mm to 300mm , and the number of dust in different areas is marked with different marks. Then rotate the sample plate by 90 ° and mark the newly discovered dust after each rotation until it returns to its original position. Then follow the above method, check the other side of the sample.

Fluorescence content seven Fluorescence:. R457 diffuse blue reflectance factor can be directly attributed to the effect of optical brighteners portion.

Test Method: Using PN-48B Whiteness Tester, first test the whiteness of the sample, and then detect the fluorescence of the sample. The PN-48B Whiteness Meter can only measure fluorescence levels above 0.2% . If it is lower than this, you can use a dark box type three-use UV analyzer for qualitative testing.

8. Delivery of water : The moisture content at the time of delivery. Test method: Use the PN-FDG1 paper moisture meter to detect and touch the probe to the sample. Among them, the moisture content of candy wrappers ranges from ( 6.0 to 8.0 ) % , and that of ordinary food wrappers to ( 5.0 to 9.0 ) % . Halogen moisture meters can be used if more precise results are needed.

   Companies can choose the appropriate logistics performance testing equipment according to their own situation. In addition, biochemical testing instruments and reagents should also be purchased.