The product form of paper towels mainly includes paper face towels (box tissues), paper handkerchiefs, paper napkins, etc., which are widely used in restaurants, dining tables, homes and other places and personal carry-on.
How is the quality of the tissue paper on the market? In June 2011, the staff of the China Consumers Association randomly purchased 24 brands of products in major shopping malls, supermarkets and wholesale markets in Beijing as ordinary consumers, including Vinda, Qingfeng, Xinxiangyin, Jieyun, Brand products with high market share, such as Shujie, Jierou, and Mayflower. The samples were entrusted to the National Paper Quality Supervision and Inspection Center for a comparative test. This comparative test is carried out in accordance with the standard of GB/T20808 “Paper tissue (including wet wipes)”, and the inspection items are the technical and microbiological indicators in the standard. The technical indicators include: quantitative, brightness (whiteness), horizontal liquid absorption height, horizontal tensile index, vertical wet tensile strength, softness, holes, dust, and internal deviation; microbial indicators include: the total number of bacterial colonies, The total number of colonies of coliforms, pathogenic bacteria, and fungi. At the same time, items such as fluorescent substances and fiber components in tissues that consumers are more concerned about, the convenience of tissue extraction, the convenience and identification of paper handkerchiefs are also carried out. Detection.
Among the 24 samples in this comparative test, the test results of 18 samples met the quality requirements of the stated product standards, and the test results of 6 samples had quality problems. The qualified rate of this comparative test product was 75.0%. The results of this comparative test show that the quality of the major brands of tissue paper products on the market is reliable, but the quality of some small brands of tissue paper products still has certain problems.
1. Tissue paper products are in good hygienic conditions
In this comparative test, the total number of bacterial colonies, total fungal colonies, coliforms, and pathogenic bacteria (including Pseudomonas aeruginosa, Staphylococcus aureus and Hemolytic streptococcus) and other microbial indicators were tested, and the test results of 24 samples were all qualified.
2. The brightness (whiteness) indicators of tissue paper products all meet the standards, but some products contain fluorescent substances
Brightness (whiteness) is one of the paper’s appearance indicators. The higher the brightness (whiteness) value, the whiter the paper. The brightness (whiteness) index specified in the tissue paper standard is (80.0~90.0)%. The 24 tissue paper products selected in this comparative test have the lowest brightness (whiteness) of 80.8% and the highest 89.6%. Inspection The results all meet the standard requirements. After inspection, six products were found to contain fluorescent substances.
3. The water absorption properties of different brands of tissue paper products are quite different
The horizontal liquid absorption height is a technical indicator that reflects the water absorption performance of paper towels. The larger the value of the horizontal liquid absorption height, the better the water absorption performance of the tissue paper. The paper towel paper standard stipulates that the horizontal liquid absorption height of qualified products is ≥30mm/100s. In this comparative test, the horizontal liquid absorption height of the three paper napkin products, “Xin Brand”, “Zhongkang” and “Paijieshi” Meet the standard requirements, the smallest inspection result is only 11mm/100s.
Fourth, some products are not strong enough, and paper scraps and lint are easy to fall off when wiping and using
paper towel strength index includes transverse tensile index and longitudinal wet tensile strength. The transverse tensile index is one of the strength indexes of paper towels. The larger the transverse tensile index, the stronger the paper towels are, and they are not easy to break during use. The paper towel paper standard stipulates that the transverse tensile index qualified product is ≥1.70N?m/g. In this comparative test, the horizontal tensile index of the products of the three brands of “Weishi”, “Zhongkang” and “Fuerya” did not meet the standard requirements. Among them, the smallest test result of Zhongkang’s products was only 0.74N?m/g , Far below the standard requirements.
The longitudinal wet tensile strength is a measure of the wet strength of tissue paper. Paper towels are now mostly used instead of handkerchiefs for wiping purposes. They will come in contact with water or sweat when used. If the wet strength is unqualified, the wiping area will be covered with paper scraps and paper wool, which will affect the use. The paper towel paper standard stipulates that the minimum longitudinal wet tensile strength is ≥10.0N/m. The longitudinal wet tensile strength of the “Fuerya” brand products in this comparative test failed to meet the standard requirements, and the test result was 8.7N/m.
5. Insufficient amount of paper in the two products
Internal quantity deviation refers to the difference between the actual quantity inside the product and the quantity marked on the package as a percentage of the quantity marked on the package. The standard stipulates that the internal quantity deviation index is ≥-2.0%. In this comparative test, there are three products that are not marked with the product quantity and cannot be tested. The internal quantity deviation of the two brands of “Fuerya” and “Weishi” is lower than the standard According to the requirements, the number of products of the “Fuerya” brand is 200, but the measured value is only 168. The test result is -16.0%, which is far below the standard requirement.
6. The paper napkin products purchased in the wholesale market are not standardized.