GB/T 20808-2022 PDF EnglishUS$350.00 · In stock · Download in 9 seconds
GB/T 20808-2022: Paper towel Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid GB/T 20808: Historical versions
Similar standardsGB/T 20808-2022: Paper towel---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT20808-2022GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 85.080.20 CCS Y 39 Replacing GB/T 20808-2011 Paper Towel Issued on. APRIL 15, 2022 Implemented on. MAY 1, 2023 Issued by. State Administration for Market Regulation; Standardization Administration of the People’s Republic of China. Table of ContentsForeword... 3 1 Scope... 5 2 Normative References... 5 3 Terms and Definitions... 6 4 Classification... 7 5 Raw Materials... 7 6 Requirements... 8 7 Test Method... 11 8 Inspection Rules... 15 9 Marking and Packaging... 18 10 Transportation and Storage... 20 Appendix A (normative) Determination of Dispersibility... 21 Appendix B (normative) Determination of Powder Shedding Rate... 23 Appendix C (normative) List of Carcinogenic Aromatic Amines... 25 Appendix D (normative) Determination of Decolorization Performance... 261 ScopeThis document specifies the classification, raw materials, requirements, test methods, inspection rules, marking, packaging, transportation and storage of paper towels. This document is applicable to various facial tissues, paper napkins and paper handkerchiefs used in daily life. This document does not apply to wet wipes, paper hand towels and kitchen towels.2 Normative ReferencesThe contents of the following documents constitute indispensable clauses of this document through the normative references in the text. In terms of references with a specified date, only versions with a specified date are applicable to this document. In terms of references without a specified date, the latest version (including all the modifications) is applicable to this document. GB/T 450 Paper and Board - Sampling for Testing and Identification of Machine and Cross Direction, Wire Side and Felt Side GB/T 461.1 Paper and Board - Determination of Capillary Rise (Klemm method) GB/T 462 Paper, Board and Pulp - Determination of Moisture Content of Analytical Sample GB/T 465.2 Paper and Board - Determination of Tensile Strength after Immersion in Water GB/T 742 Fibrous Raw Material, Pulp, Paper and Board - Determination of Residue (ash) on Ignition at 575 C and 900 C GB/T 1541 Paper and Board - Determination of Dirt GB/T 2828.1 Sampling Procedures for Inspection by Attributes - Part 1.Sampling Schemes Indexed by Acceptance Quality Limit (AQL) for Lot-by-lot Inspection GB/T 6682 Water for Analytical Laboratory Use - Specification and Test Methods GB/T 7974 Paper, Board and Pulps - Measurement of Diffuse Blue Reflectance Factor - D65 Brightness (Diff / Geometry, Outdoor daylight conditions) GB/T 8942 Paper - Determination of Softness GB/T 10739 Paper, Board and Pulps - Standard Atmosphere for Conditioning and Testing GB 15979 Hygienic Standard for Disposable Sanitary Products3 Terms and DefinitionsThis document does not have terms or definitions that need to be defined.4 Classification4.1 In accordance with the purposes, paper towels are classified into facial towels (facial tissues), paper napkins (napkins) and paper handkerchiefs (handkerchief papers). 4.2 In accordance with the raw materials, paper towels are classified into primary wood pulp (fiber) paper towels, primary non-wood pulp (fiber) paper towels and primary mixed pulp (fiber) paper towels. 4.3 In accordance with the product performance, paper towels are classified into ordinary paper towels, soft paper towels, wet reinforced paper towels, dispersible paper towels and moisturizing paper towels. Among them, the ordinary paper towels are further classified into superior products and qualified products. 4.6 In accordance with the process, paper towels are classified into embossed paper towels and non-embossed paper towels.5 Raw Materials5.1 Paper towels shall use non-toxic and harmless raw materials. During printing, water-based inks shall be used. Paper towels shall use primary fiber raw materials, such as. wood, 5.2 If essence is added during the production of paper towels, the essence used shall comply with the stipulations of GB/T 22731.If moisturizing ingredients are added during the production of paper towels, it shall be ensured that the added moisturizing ingredients comply with the stipulations of Cosmetics Safety Technical Specifications (Edition 2015). 5.3 The safety assessment and management of chemicals and raw materials used for tissue base papers shall comply with the relevant stipulations of GB/T 36420.6 Requirements6.1 Requirements for Physical and Chemical Properties The requirements for physical and chemical properties of paper towels shall comply with the stipulations of Table 1. 6.2 Hygiene Requirements The hygiene requirements for paper towels shall comply with the stipulations of GB 15979. 6.5 Appearance Quality Paper towels shall be clean and evenly wrinkled. There shall be no obvious paper defects, such as. dead folds, incompleteness, damages, foreign matters, hard blocks and raw pulp lumps, etc.7 Test Method7.1 Sample Collection and Treatment Sampling shall be conducted in accordance with GB/T 450. When determining the quantification and quantitative deviations, transverse suction height, transverse tensile strength, longitudinal wet tensile strength, softness, powder shedding rate and dimensional deviations, the sample treatment and the standard atmospheric conditions of the test shall comply with the stipulations of GB/T 10739. 7.2 Quantification and Quantitative Deviations The quantification and quantitative deviations shall be determined in accordance with GB/T 24328.5, and the results shall be expressed in single-layer. 7.6 Transverse Suction Height The transverse suction height shall be determined in accordance with GB/T 461.1.The test duration is 100 s. Conduct the determination in accordance with the number of layers of finished products. 7.7 Transverse Tensile Strength The transverse tensile strength shall be determined in accordance with GB/T 24328.3.The width of the specimen is 15 mm, and the clamping distance is 100 mm. For single-layer, double- layer or multi-layer specimens, determine in accordance with the number of layers of finished products. 7.8 Longitudinal Wet Tensile Strength 7.8.1 Manual method 7.8.2 Automatic method In accordance with the horizontal test method in GB/T 24328.4-2020, conduct the determination. The results shall be expressed as the test value of finished product layers. Adopt a tensile tester that enables automatic immersion, and the water immersion time of the specimen is 5 s. 7.10 Dispersibility The dispersibility shall be determined in accordance with Appendix A. 7.11 Acrylamide Content The acrylamide content shall be determined in accordance with GB/T 37859. 7.12 Powder Shedding Rate The powder shedding rate shall be determined in accordance with Appendix B. 7.15 Formaldehyde content The formaldehyde content shall be determined in accordance with the high-performance liquid chromatography in GB/T 34448-2017. 7.16 Decolorization performance The decolorization performance shall be determined in accordance with Appendix D. 7.23 Appearance Quality Conduct visual inspection on the appearance quality.8 Inspection Rules8.1 Inspection Classification 8.1.1 Exit-factory inspection Before exiting the factory, the products shall be inspected batch by batch in accordance with the requirements of this document, and they can only be allowed to exit the factory after they comply with the requirements. 8.3 Batch Rules and Sampling Schemes 8.3.1 Batch rules The one-time delivery of the same type of products with the same raw materials, the same process and the same specifications is a batch. The sample unit for delivery inspection is box or piece, and each batch does not exceed 10,000 boxes (pieces). 8.3.2 Sampling schemes 8.4 Quality Determination 8.4.1 Item determination 8.4.2 Batch determination Among all the inspection items, if the inspection results of hygiene requirements are disqualified, then, the batch shall be determined as disqualified; the number of samples for the first inspection of physical and chemical properties, internal capacity shortage, dimensional deviations and appearance quality shall be equal to the first sample size provided in the scheme.9 Marking and Packaging9.1 Product Sales Package Marking In addition to complying with GB 38598, the product sales package marking shall also include the following contents. 9.2 Product Transport Package Marking In addition to complying with GB 38598, the product transport package marking shall also include the following contents. 9.3 Packaging 9.3.1 The packaging of paper towels shall be dust-proof, moisture-proof and mildew-proof, etc. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. 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