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GB/T 8948-2008: Polyvinyl chloride artificial leather 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 8948: Historical versions
Similar standardsGB/T 8948-2008: Polyvinyl chloride artificial leather---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/GBT8948-2008NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 59.080.40 Y 47 Replacing GB/T 8948-1994 Polyvinyl chloride artificial leather Issued on. AUGUST 19, 2008 Implemented on. MAY 01, 2009 Issued by. General Administration of Quality Supervision, Inspection and Quarantine of PRC; Standardization Administration of PRC. Table of ContentsForeword... 3 1 Scope... 4 2 Normative references... 4 3 Classification... 5 4 Requirements... 5 5 Test method... 8 6 Inspection rules... 13 7 Marking, packaging, transportation, storage... 15ForewordThis standard replaces GB/T 8948-1994 "Polyvinyl chloride artificial leather". Compared with GB/T 8948-1994, the main changes of this standard are as follows. - This standard adds classification according to whether the coating is foamed. Foamed leather and non-foamed leather. - This standard readjusts the index 4.1.2; determines different indexes, according to different thicknesses. - The indicators 4.1.4, 4.2, 4.3 in the requirements of this standard are not graded, BUT the first-grade indicators of the original standard are uniformly adopted. - This standard divides it into general physical and mechanical properties (4.3) and negotiated physical and mechanical properties (4.4), according to the importance of physical and mechanical properties to the product. - The folding fastness, adhesion, low temperature folding fastness, rub resistance, bursting strength, in the original standard, are included into the negotiated physical and mechanical properties; add two indicators of light resistance and vulcanization. - In this standard, the test methods for light resistance and vulcanization are added to the test methods; meanwhile the test methods for low temperature folding fastness, rub resistance, bursting strength are moved from the appendix to the main text. - The aging test temperature is not graded, uniformly adopting the first-grade index of the original standard. This standard was proposed by China National Light Industry Federation. This standard shall be under the jurisdiction of the National Technical Committee for Standardization of Plastic Products. Responsible drafting organization of this standard. Foshan Plastics Group Co., Ltd. Shuanglong Branch. Participated drafting organization of this standard. Wuxi Shuangxiang Microfiber Material Co., Ltd. The main drafters of this standard. Wu Jinghua, Gao Pian, Zeng Xiuming, Zhang Qingrong, Zhao Mei. This standard replaces the standard previously issued as follows. - GB 8948-1988, GB/T 8948-1994. Polyvinyl chloride artificial leather1 ScopeThis standard specifies the product classification, requirements, test methods, inspection rules and marking, packaging, transportation, storage of polyvinyl chloride artificial leather. This standard applies to the polyvinyl chloride artificial leather, which is made of plain weave or twill fabric as the base, by adding plasticizers and other additives to the polyvinyl chloride resin, through calendering or coating. This standard does not apply to knitted cloth-based polyvinyl chloride artificial leather.2 Normative referencesThe provisions in following documents become the provisions of this Standard through reference in this Standard. For the dated references, the subsequent amendments (excluding corrections) or revisions do not apply to this Standard; however, parties who reach an agreement based on this Standard are encouraged to study if the latest versions of these documents are applicable. For undated references, the latest edition of the referenced document applies. GB/T 250-2008 Textiles - Tests for colour fastness - Grey scale for assessing change in colour GB/T 1040.3-2006 Plastics - Determination of tensile properties - Part 3.Test conditions for films and sheets GB/T 1539-2007 Paperboard - Determination of bursting strength GB/T 2828.1-2003 Sampling procedures for inspection by attributes - Part 1. Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection GB/T 2918-1998 Plastics - Standard atmospheres for conditioning and testing GB/T 3920-2008 Textiles - Tests for colour fastness - Colour fastness to rubbing GB 7565-1987 Textiles - Tests for colour fastness - Specification for standard adjacent fabric - Cotton and viscose3 Classification3.1 See Table 1 for the classification of products, according to the cloth-based textile method.4 Requirements4.1 Specifications 4.1.1 The width and limit deviation shall meet the requirements in Table 2. 4.1.2 Thickness and limit deviation shall comply with the requirements in Table 3. 4.1.3 The limit negative deviation of the length of each roll is 0.1 m. 4.1.4 The number of segments and the minimum segment length of each roll shall comply with the provisions of Table 4. 4.3 Physical-mechanical properties5 Test method5.1 Specimen preparation Cut more than 1 m, along the warp direction of the product, as a sample. After removing the width of 50 mm, from both ends of the specimen, in the weft direction, carry out specimen preparation. The cut number and size of the specimen are in accordance with the provisions of Table 8 and Figure 1. 5.3 Width Use a steel tape measure or instrument, which has an accuracy of 1 mm, to measure 3 places, along the length direction at random. Take the minimum value as the result, accurate to 1 mm. 5.4 Thickness 5.6 Appearance Carry out visual inspection under natural light; make measurement with a corresponding gauge. 5.7 Tensile load and elongation at break Carry out in accordance with the provisions of GB/T 1040.3-2006.Use the type 2 specimens; the distance between the marking lines of the specimens is 100 mm; the tensile speed is 200 mm/min. 5.11 Cold resistance It is carried out, according to the provisions of HG/T 2-162-1965; the test temperature is (-10 ± 1) °C. Take the worst test data as the test result. 5.12 Aging 5.12.1 Instruments Heat aging test chamber. It is equipped with rotating specimen holder and blower device. 5.14 Folding fastness It is carried out, in accordance with the provisions of QB/T 2714-2005. 5.15 Folding fastness at low temperature 5.15.1 Test instrument The low-temperature folding fastness testing machine shall meet the requirements of QB/T 2714-2005. 5.15.2 Test procedure Taking the center line of the length of the specimen as a reference, fold the coating inwards. Put one end of the folded specimen into the upper clamp of the instrument, so that the top end is in contact with the screw, AND the fold line is flush with the bottom edge of the clamp. Then fold the other end of the specimen inward; insert it into the lower clamp. Then adjust the temperature in the chamber to (-10 ± 2) °C. When the counter reaches 30000, stop the test. Observe the change of the folded part. Take the worst test data as the test result. 5.16 Rub resistance 5.16.1 Test instruments Scott-type rubbing tester.6 Inspection rules6.1 Inspection classification and items 6.1.1 Exit-factory inspection The exit-factory inspection items are the items in 4.1, 4.2, 4.3.1 in the requirements. 6.1.2 Type inspection Type inspection shall be carried out, in one of the following situations. 6.2 Exit-factory inspection 6.2.1 Group-batching and sampling 6.2.2 Judgment rules 6.2.2.1 Determination of qualified items The determination of specifications and appearance sample units shall be carried out, in accordance with the provisions of 4.1 and 4.2, respectively. If the inspection result of the sample unit conforms to the provisions in Table 9, it is judged that the specification and appearance are qualified. 6.3 Type inspection 6.3.1 Sampling A roll is randomly selected from the products, that have passed the exit-factory inspection, for the inspection of appearance and specifications. The 1 m is taken, for the inspection of physical-mechanical properties. 6.3.2 Judgment rules Specifications and appearance shall be carried out, in accordance with the provisions of 4.1 and 4.2.If it is not qualified, 3 rolls shall be re-selected randomly from the original product, for re-inspection. If the re-inspection results are all qualified, the specification and appearance are judged to be qualified.7 Marking, packaging, transportation, storage7.1 Marking Each roll of product shall be accompanied by a certificate of conformity AND have the following marks. 7.2 Packaging The product shall be coated inward; rolled into a neat round roll with a roll core; packaged with plastic film or paper. It can also be as negotiated by both the supplier and the buyer. 7.3 Transportation When the product is transported, it shall prevent collision or contact with sharp objects. It shall be lightly loaded and unloaded. It shall not be under heavy pressure. Do not expose to the sun and rain. Keep the packaging intact. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of English version of GB/T 8948-2008 be delivered?Answer: The full copy PDF of English version of GB/T 8948-2008 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice.Question 2: Can I share the purchased PDF of GB/T 8948-2008_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 8948-2008_English will be deemed to be sold to your employer/organization who actually paid for it, including your colleagues and your employer's intranet.Question 3: Does the price include tax/VAT?Answer: Yes. 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