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Similar standardsQB/T 4839-2023: Upholstered furniture - Form mattress---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/QBT4839-2023QB LIGHT INDUSTRY STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 97.140 CCS Y81 Replacing QB/T 4839-2015 Upholstered furniture - Form mattress Issued on. DECEMBER 20, 2023 Implemented on. JULY 01, 2024 Issued by. Ministry of Industry and Information Technology of PRC Table of ContentsForeword... 3 1 Scope... 5 2 Normative references... 5 3 Terms, definitions, symbols... 6 4 Product classification... 7 5 Requirements... 8 6 Test method... 10 7 Inspection rules... 14 8 Marking, instructions for use, packaging, transportation, storage... 16 References... 18ForewordThis document was drafted in accordance with the provisions of GB/T 1.1-2020 "Directives for standardization - Part 1.Rules for the structure and drafting of standardizing documents". This document replaces QB/T 4839-2015 "Upholstered furniture - Foam mattress". Compared with QB/T 4839-2015, in addition to structural adjustments and editorial changes, the main technical changes are as follows. a) ADD the requirements for zippers (see Table 3 No.19, 20, 21, 22); b) ADD the requirements for textile fabric physicochemical properties. pilling performance requirements (see Table 3 No.23); c) ADD the physical properties of soft polyurethane foam plastic core material. compression permanent deformation (see Table 3 No.26); d) CHANGE the physical properties of slow-rebound soft polyurethane foam plastic core material. recovery time (see Table 3 No.36; Table 3 No.25 of the 2015 edition); e) ADD the latex core material composition and heavy metal content (see Table 3 No.41, 42); f) CHANGE the indicator requirements and test methods of mattress formaldehyde emission (see Table 3 No.44 and 6.19; Table 3 No.36 and 6.15 of the 2015 edition); g) ADD the mattress benzene emission, toluene emission, xylene (sum of o-, m-, p-) emission, total volatile organic compound (TVOC) emission (see Table 3 No.45, 46, 47, 48); h) CHANGE the mite inhibition rate (see Table 3 No.50; Table 3 No.38 of the 2015 edition); i) ADD the durability (edge) grading (see Table 3 No.52); j) ADD the odor (see Table 3 No.53). This document was proposed by China Light Industry Federation. This document shall be under the jurisdiction of the National Technical Committee for Furniture Standardization (SAC/TC 480). Drafting organizations of this document. Guangdong Dongguan Quality Supervision and Inspection Center, De Rucci Healthy Sleep Co., Ltd., Shanghai Quality Supervision and Inspection Technology Research Institute, Zhejiang Mengshen Home Furnishing Co., Ltd., Shenzhen Yuanchao Smart Life Co., Ltd., Shenzhen Inspection Group (Zhejiang) Quality Technology Service Co., Ltd., Guangdong Product Quality Supervision and Inspection Institute, Xilinmen Furniture Co., Ltd., Shanghai Aimen Smart Home Co., Ltd., Gujia Home Furnishing Co., Ltd., Mingzhu Furniture Co., Ltd., Qisheng Technology Co., Ltd., Shanghai Aishu Mattress Group Co., Ltd., Yantai Jisi Furniture Group Co., Ltd., Hunan Wanan Home Furnishing Industry Co., Ltd., Hubei Lianle Bedding Group Co., Ltd., Hunan Xinggang Home Furnishing Development Co., Ltd., Nanjing Jinbang Qilin Home Furnishing Co., Ltd., Zhejiang Gaoyu Home Furnishing Technology Co., Ltd., Wanhua Chemical Group Co., Ltd., Suining County Shaji Town E-commerce Association, Guangdong Lin's Home Furnishing Co., Ltd., Chongqing Jiameng Furniture Co., Ltd., Shenzhen Zhongshen'ai Bedding Technology Co., Ltd., Foshan Yiao Technology Industry Co., Ltd., Dongguan Weibing Sponge Furniture Co., Ltd., Dongguan Wohuang Bedding Co., Ltd., Fujian Product Quality Inspection Institute, Qingdao Product Quality Inspection Institute, China Quality Certification Center Center, Shenzhen Sai De Testing Technology Co., Ltd., SGS- CSTC Standards Technical Services Co., Ltd. Guangzhou Branch, Dongguan Jinhui Testing Equipment Manufacturing Co., Ltd., Hebei Shengyounuo Home Products Co., Ltd., Jiangsu Aidefu Latex Products Co., Ltd., Jiangsu Jinyingtai Latex Products Co., Ltd., Foshan Haima Furniture Co., Ltd., Foshan Suilong Furniture Co., Ltd., Zhangzhou Xinhuacheng Machinery Manufacturing Co., Ltd. The main drafters of this document. Jing Jun, Wang Liping, Yu Ting, Huang Zhihua, Wu Haitao, Wang Ping, Shi Yuting, Luo Xiaorong, Zhang Deng, Yan Zhicheng, Yang Lina, Li Xing, Lu Bingrong, Liu Yuan, Hu Pengfei, Yang Yuanchao, Chen Yiyue, Wu E, Zhou Houyong, Yi Fei, Wang Jianbing, Gu Xiaobing, Ying Haoran, Sun Chuanyang, Yang Hongru, Cao Zeyun, Guo Taiping, Hu Yanqing, Lu Tao, Qiu Guohao, Lin Fangqian, Feng Baosheng, He Qing, Lin Zuoyi, Tang Jie, Zeng Guangjie, Cui Jianeng, Lu Meifang, Chen Deguang, Chen Donghai, He Bing, Zhang Zhanguang, Wu Peng, Zhao Jinglong, Cui Youxian, Zhang Hankai, Huang Yongbing. This standard replaces the standard previously issued as follows. - It was first published in 2015 as QB/T 4839-2015; - This is the first revision.guan Upholstered furniture - Form mattress1 ScopeThis document specifies the requirements for dimensional deviation, fabric, physical properties, etc. of foam mattresses; describes the corresponding test methods; specifies the inspection rules, marking, instructions for use, packaging, transportation and storage; provides symbols and product classifications that facilitate technical provisions. This document is applicable to the quality inspection and quality determination of foam mattresses with a thickness of not less than 130 mm; it is used as a reference for foam mattresses with a thickness of less than 130 mm.2 Normative referencesThe contents of the following documents constitute essential clauses of this document through normative references in the text. Among them, for dated references, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies to this document. GB/T 2828.1-2012 Sampling procedures for inspection by attributes - Part 1. Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection GB/T 3920-2008 Textiles - Tests for color fastness - Color fastness to rubbing GB/T 4802.2 Textiles - Determination of fabric propensity to surface fuzzing and to pilling - Part 2.Modified Martindale method GB/T 5296.6 Instructions for use of products of consumer interest - Part 6.furniture GB/T 6344-2008 Flexible cellular polymeric materials - Determination of tensile strength and elongation at break GB/T 6669-2008 Flexible cellular polymeric materials - Determination of compression set GB/T 6670-2008 Flexible cellular polymeric materials - Determination of resilience by ball rebound GB/T 9345.1-2008 Plastics - Determination of ash - Part 1.General methods3 Terms, definitions, symbols3.1 Terms and definitions The terms and definitions as defined in QB/T 1952.2, as well as the following terms and definitions, apply to this document. 3.1.1 Foam mattress A mattress product made of natural latex, synthetic latex, polyurethane and other materials, which are formed by foaming process as the main core material and covered with fabric or composite fabric. 3.1.2 Ash content The incombustible components left after burning of latex or polyurethane materials in foam mattresses (3.1.1). 3.2 Symbols The following symbols apply to this document, as shown in Table 1.4 Product classification4.1 Classification by main design dimensions of the product See Table 2 for the classification by main design dimensions of the product. 4.2 Classification by core material 4.2.1 Latex mattress Mattress with natural or synthetic latex material as the core (core material) and covered with fabric or other materials on the surface.5 RequirementsThe product shall comply with the requirements of Table 3.6 Test method6.1 General test conditions 6.1.1 Test preparation Before the test, the specimen shall be placed in a standard environment with a temperature of (23 ± 2) °C and a relative humidity of (50 ± 5)% for at least 24 hours. During the aging equilibrium period, the mattress shall remain flat and unloaded; the test shall be conducted indoors. 6.1.2 Measurement accuracy Unless otherwise specified, the force measurement shall be accurate to ±5%; the mass measurement shall be accurate to ±0.5%; the size measurement shall be accurate to ±1 mm; the position of the load pad shall be accurate to ±5 mm. 6.2 Test device 6.2.1 Side guard A device used to prevent the test piece from moving but not to limit the test piece from tipping over. Its height shall not exceed 12 mm. If the test piece has a special structure, a higher size may be used; however, its maximum height shall be just enough to prevent the test piece from moving. 6.6 Physical and chemical properties of textile fabrics 6.6.1 Anti-pilling performance The anti-pilling performance shall be measured according to the method of GB/T 4802.2.The test load for woven fabrics is (415 ± 2) g; the test load for knitted fabrics is (155 ± 1) g. 6.11 Mass loss after dry heat aging Take a specimen with a size of 100 mm × 100 mm × 25 mm. Place it in a standard environment at a temperature of (23 ± 2) °C and a relative humidity of (50 ± 5)%, until constant weight. Weigh it (m0). Then place it in an oven at a temperature of (105 ± 2) °C for 48 hours. Weigh it (m1). Calculate the mass loss after dry heat aging. The number of specimens is 5. 6.24 Sign Check whether the product has a sign and whether the content complies with the provisions of 8.1. 6.25 Instructions for use Check whether the product has instructions for use and whether the content complies with the provisions of 8.2.7 Inspection rules7.1 Inspection classification Product inspection is divided into exit-factory inspection and type inspection. 7.2 Exit-factory inspection 7.2.1 Exit-factory inspection items Exit-factory inspection is an inspection conducted when the product leaves the factory or is delivered. Serial No.1 ~ 22, 53 ~ 55 (a total of 25 items) in Table 3 are exit-factory inspection items. 7.2.3 Evaluation of exit-factory inspection results 7.2.3.1 If the basic items of a single product are all qualified, meanwhile the number of unqualified items of general items is not more than 3, then the product is qualified; otherwise, it is unqualified. 7.3 Type inspection 7.3.1 Inspection items All inspection items specified in Chapter 5 (except those required by the contract). 7.3.2 Timing of type inspection It is performed once a year in normal production; it shall also be conducted in any of the following situations. 7.3.4 Inspection procedure The inspection procedure follows the principle of not affecting the correctness of the remaining inspection items as much as possible. 7.3.5 Determination of inspection results Inspection results are divided into superior products, first-grade products, qualified products, unqualified products. The product quality grade is evaluated according to the provisions of Table 5.8 Marking, instructions for use, packaging, transportation, storage8.1 Marking Product marking shall include at least the following. 8.2 Instructions for use The main contents of the product instructions for use shall comply with the provisions of GB/T 5296.6.It shall include at least. 8.3 Packaging Products shall be packaged to prevent contamination and damage. 8.4 Transportation and storage QB/T 4839-2023 QB LIGHT INDUSTRY STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 97.140 CCS Y81 Replacing QB/T 4839-2015 Upholstered furniture - Form mattress Issued on. DECEMBER 20, 2023 Implemented on. JULY 01, 2024 Issued by. Ministry of Industry and Information Technology of PRCTable of ContentsForeword... 3 1 Scope... 5 2 Normative references... 5 3 Terms, definitions, symbols... 6 4 Product classification... 7 5 Requirements... 8 6 Test method... 10 7 Inspection rules... 14 8 Marking, instructions for use, packaging, transportation, storage... 16 References... 18ForewordThis document was drafted in accordance with the provisions of GB/T 1.1-2020 "Directives for standardization - Part 1.Rules for the structure and drafting of standardizing documents". This document replaces QB/T 4839-2015 "Upholstered furniture - Foam mattress". Compared with QB/T 4839-2015, in addition to structural adjustments and editorial changes, the main technical changes are as follows. a) ADD the requirements for zippers (see Table 3 No.19, 20, 21, 22); b) ADD the requirements for textile fabric physicochemical properties. pilling performance requirements (see Table 3 No.23); c) ADD the physical properties of soft polyurethane foam plastic core material. compression permanent deformation (see Table 3 No.26); d) CHANGE the physical properties of slow-rebound soft polyurethane foam plastic core material. recovery time (see Table 3 No.36; Table 3 No.25 of the 2015 edition); e) ADD the latex core material composition and heavy metal content (see Table 3 No.41, 42); f) CHANGE the indicator requirements and test methods of mattress formaldehyde emission (see Table 3 No.44 and 6.19; Table 3 No.36 and 6.15 of the 2015 edition); g) ADD the mattress benzene emission, toluene emission, xylene (sum of o-, m-, p-) emission, total volatile organic compound (TVOC) emission (see Table 3 No.45, 46, 47, 48); h) CHANGE the mite inhibition rate (see Table 3 No.50; Table 3 No.38 of the 2015 edition); i) ADD the durability (edge) grading (see Table 3 No.52); j) ADD the odor (see Table 3 No.53). This document was proposed by China Light Industry Federation. This document shall be under the jurisdiction of the National Technical Committee for Furniture Standardization (SAC/TC 480). Drafting organizations of this document. Guangdong Dongguan Quality Supervision and Inspection Center, De Rucci Healthy Sleep Co., Ltd., Shanghai Quality Supervision and Inspection Technology Research Institute, Zhejiang Mengshen Home Furnishing Co., Ltd., Shenzhen Yuanchao Smart Life Co., Ltd., Shenzhen Inspection Group (Zhejiang) Quality Technology Service Co., Ltd., Guangdong Product Quality Supervision and Inspection Institute, Xilinmen Furniture Co., Ltd., Shanghai Aimen Smart Home Co., Ltd., Gujia Home Furnishing Co., Ltd., Mingzhu Furniture Co., Ltd., Qisheng Technology Co., Ltd., Shanghai Aishu Mattress Group Co., Ltd., Yantai Jisi Furniture Group Co., Ltd., Hunan Wanan Home Furnishing Industry Co., Ltd., Hubei Lianle Bedding Group Co., Ltd., Hunan Xinggang Home Furnishing Development Co., Ltd., Nanjing Jinbang Qilin Home Furnishing Co., Ltd., Zhejiang Gaoyu Home Furnishing Technology Co., Ltd., Wanhua Chemical Group Co., Ltd., Suining County Shaji Town E-commerce Association, Guangdong Lin's Home Furnishing Co., Ltd., Chongqing Jiameng Furniture Co., Ltd., Shenzhen Zhongshen'ai Bedding Technology Co., Ltd., Foshan Yiao Technology Industry Co., Ltd., Dongguan Weibing Sponge Furniture Co., Ltd., Dongguan Wohuang Bedding Co., Ltd., Fujian Product Quality Inspection Institute, Qingdao Product Quality Inspection Institute, China Quality Certification Center Center, Shenzhen Sai De Testing Technology Co., Ltd., SGS- CSTC Standards Technical Services Co., Ltd. Guangzhou Branch, Dongguan Jinhui Testing Equipment Manufacturing Co., Ltd., Hebei Shengyounuo Home Products Co., Ltd., Jiangsu Aidefu Latex Products Co., Ltd., Jiangsu Jinyingtai Latex Products Co., Ltd., Foshan Haima Furniture Co., Ltd., Foshan Suilong Furniture Co., Ltd., Zhangzhou Xinhuacheng Machinery Manufacturing Co., Ltd. The main drafters of this document. Jing Jun, Wang Liping, Yu Ting, Huang Zhihua, Wu Haitao, Wang Ping, Shi Yuting, Luo Xiaorong, Zhang Deng, Yan Zhicheng, Yang Lina, Li Xing, Lu Bingrong, Liu Yuan, Hu Pengfei, Yang Yuanchao, Chen Yiyue, Wu E, Zhou Houyong, Yi Fei, Wang Jianbing, Gu Xiaobing, Ying Haoran, Sun Chuanyang, Yang Hongru, Cao Zeyun, Guo Taiping, Hu Yanqing, Lu Tao, Qiu Guohao, Lin Fangqian, Feng Baosheng, He Qing, Lin Zuoyi, Tang Jie, Zeng Guangjie, Cui Jianeng, Lu Meifang, Chen Deguang, Chen Donghai, He Bing, Zhang Zhanguang, Wu Peng, Zhao Jinglong, Cui Youxian, Zhang Hankai, Huang Yongbing. This standard replaces the standard previously issued as follows. - It was first published in 2015 as QB/T 4839-2015; - This is the first revision.guan Upholstered furniture - Form mattress1 ScopeThis document specifies the requirements for dimensional deviation, fabric, physical properties, etc. of foam mattresses; describes the corresponding test methods; specifies the inspection rules, marking, instructions for use, packaging, transportation and storage; provides symbols and product classifications that facilitate technical provisions. This document is applicable to the quality inspection and quality determination of foam mattresses with a thickness of not less than 130 mm; it is used as a reference for foam mattresses with a thickness of less than 130 mm.2 Normative referencesThe contents of the following documents constitute essential clauses of this document through normative references in the text. Among them, for dated references, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies to this document. GB/T 2828.1-2012 Sampling procedures for inspection by attributes - Part 1. Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection GB/T 3920-2008 Textiles - Tests for color fastness - Color fastness to rubbing GB/T 4802.2 Textiles - Determination of fabric propensity to surface fuzzing and to pilling - Part 2.Modified Martindale method GB/T 5296.6 Instructions for use of products of consumer interest - Part 6.furniture GB/T 6344-2008 Flexible cellular polymeric materials - Determination of tensile strength and elongation at break GB/T 6669-2008 Flexible cellular polymeric materials - Determination of compression set GB/T 6670-2008 Flexible cellular polymeric materials - Determination of resilience by ball rebound GB/T 9345.1-2008 Plastics - Determination of ash - Part 1.General methods3 Terms, definitions, symbols3.1 Terms and definitions The terms and definitions as defined in QB/T 1952.2, as well as the following terms and definitions, apply to this document. 3.1.1 Foam mattress A mattress product made of natural latex, synthetic latex, polyurethane and other materials, which are formed by foaming process as the main core material and covered with fabric or composite fabric. 3.1.2 Ash content The incombustible components left after burning of latex or polyurethane materials in foam mattresses (3.1.1). 3.2 Symbols The following symbols apply to this document, as shown in Table 1.4 Product classification4.1 Classification by main design dimensions of the product See Table 2 for the classification by main design dimensions of the product. 4.2 Classification by core material 4.2.1 Latex mattress Mattress with natural or synthetic latex material as the core (core material) and covered with fabric or other materials on the surface.5 RequirementsThe product shall comply with the requirements of Table 3.6 Test method6.1 General test conditions 6.1.1 Test preparation Before the test, the specimen shall be placed in a standard environment with a temperature of (23 ± 2) °C and a relative humidity of (50 ± 5)% for at least 24 hours. During the aging equilibrium period, the mattress shall remain flat and unloaded; the test shall be conducted indoors. 6.1.2 Measurement accuracy Unless otherwise specified, the force measurement shall be accurate to ±5%; the mass measurement shall be accurate to ±0.5%; the size measurement shall be accurate to ±1 mm; the position of the load pad shall be accurate to ±5 mm. 6.2 Test device 6.2.1 Side guard A device used to prevent the test piece from moving but not to limit the test piece from tipping over. Its height shall not exceed 12 mm. If the test piece has a special structure, a higher size may be used; however, its maximum height shall be just enough to prevent the test piece from moving. 6.6 Physical and chemical properties of textile fabrics 6.6.1 Anti-pilling performance The anti-pilling performance shall be measured according to the method of GB/T 4802.2.The test load for woven fabrics is (415 ± 2) g; the test load for knitted fabrics is (155 ± 1) g. 6.11 Mass loss after dry heat aging Take a specimen with a size of 100 mm × 100 mm × 25 mm. Place it in a standard environment at a temperature of (23 ± 2) °C and a relative humidity of (50 ± 5)%, until constant weight. Weigh it (m0). Then place it in an oven at a temperature of (105 ± 2) °C for 48 hours. Weigh it (m1). Calculate the mass loss after dry heat aging. The number of specimens is 5. 6.24 Sign Check whether the product has a sign and whether the content complies with the provisions of 8.1. 6.25 Instructions for use Check whether the product has instructions for use and whether the content complies with the provisions of 8.2.7 Inspection rules7.1 Inspection classification Product inspection is divided into exit-factory inspection and type inspection. 7.2 Exit-factory inspection 7.2.1 Exit-factory inspection items Exit-factory inspection is an inspection conducted when the product leaves the factory or is delivered. Serial No.1 ~ 22, 53 ~ 55 (a total of 25 items) in Table 3 are exit-factory inspection items. 7.2.3 Evaluation of exit-factory inspection results 7.2.3.1 If the basic items of a single product are all qualified, meanwhile the number of unqualified items of general items is not more than 3, then the product is qualified; otherwise, it is unqualified. 7.3 Type inspection 7.3.1 Inspection items All inspection items specified in Chapter 5 (except those required by the contract). 7.3.2 Timing of type inspection It is performed once a year in normal production; it shall also be conducted in any of the following situations. 7.3.4 Inspection procedure The inspection procedure follows the principle of not affecting the correctness of the remaining inspection items as much as possible. 7.3.5 Determination of inspection results Inspection results are divided into superior products, first-grade products, qualified products, unqualified products. The product quality grade is evaluated according to the provisions of Table 5.8 Marking, instructions for use, packaging, transportation, storage8.1 Marking Product marking shall include at least the following. 8.2 Instructions for use The main contents of the product instructions for use shall comply with the provisions of GB/T 5296.6.It shall include at least. 8.3 Packaging Products shall be packaged to prevent contamination and damage. 8.4 Transportation and storage ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. 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