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GB/T 20202-2019 PDF English

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GB/T 20202-2019: Ethylene-vinyl acetate copolymer (EVA) blown covering film for agriculture
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Status: Valid

GB/T 20202: Historical versions

Standard IDUSDBUY PDFDeliveryStandard Title (Description)Status
GB/T 20202-2019279 Add to Cart 3 days Ethylene-vinyl acetate copolymer (EVA) blown covering film for agriculture Valid
GB/T 20202-2006479 Add to Cart 3 days Ethylene-vinyl acetate copolymer (EVA) blown covering film for agriculture Obsolete

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GB/T 20202-2019: Ethylene-vinyl acetate copolymer (EVA) blown covering film for agriculture

---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/GBT20202-2019
Ethylene-vinyl acetate copolymer (EVA) blown covering film for agriculture ICS 83.140.10 G33 National Standards of People's Republic of China Replace GB/T 20202-2006 Agricultural ethylene-vinyl acetate copolymer (EVA) blown film Published on.2019-08-30 2020-03-01 implementation State market supervision and administration China National Standardization Administration issued

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 20202-2006 "Ethylene-vinyl acetate copolymer (EVA) blown film for agricultural use". This standard and Compared with GB/T 20202-2006, the main technical changes are as follows. --- Increased astigmatism shed film terms and definitions (see 3.3); --- Removed translucent shed film and opaque shed film (see 3.3, 3.4 of.2016 edition); --- Increased astigmatism in the classification (see 4.1); --- Increase the range of product recommended thickness (see 5.2); --- Modified the width limit deviation (see 6.1, 5.1 of the.2006 edition); --- Revised the thickness limit deviation and the average deviation index (see 6.2,.2006 edition 5.2); --- Revised the mechanical performance index (see 6.5, 5.5 of the.2006 edition); --- Revised the transmittance and haze performance indicators (see 6.7, 5.5 of the.2006 edition); --- Revised tensile strength and fracture nominal strain test method (see 7.6,.2006 version 6.6); --- Revised inspection rules (see Chapter 8, Chapter 7 of the.2006 edition). This standard was proposed by the China Light Industry Association. This standard is under the jurisdiction of the National Plastics Standardization Technical Committee (SAC/TC48). This standard was drafted. Huadun Snow Plastic (Gu'an) Co., Ltd., Anyang Plastics Co., Ltd., North Huajin Chemical Industry Co., Ltd., Baishan Xifeng Plastic Industry Co., Ltd., Changchun Welfare Plastics Co., Ltd., Hebei Kelun Plastics Technology Co., Ltd. Division, Henan Yinfeng Plastic Co., Ltd., Hangzhou Xinguang Plastic Co., Ltd., Harbin Plastics Co., Ltd., Jiaozuo Chunchun Plastic Co., Ltd. Lanzhou Petrochemical Hongda Company, Qingdao Hongda Plastics Corporation, Shandong Qingtian Plastic Industry Co., Ltd., Shandong Tianhe Plastic Co., Ltd., Tian Tianjin Tiansu Technology Group Co., Ltd. Second Plastic Products Factory, Yuxi Xuri Plastics Co., Ltd., Beijing Yanshan Petrochemical High-tech Limited liability company, Beijing Tianzhu Auxiliary Co., Ltd., Sinopec Beijing Chemical Industry Research Institute, Gansu Fuyu Plastic Industry Co., Ltd. The main drafters of this standard. Liu Bingwei, Qin Lijie, Jiang Ruiping, Yang Lan, Hu Wenping, Yin Junhua, Zhang Dianxiang, Mu Jianzhang, Zhao Ligong, Lu Weidong, Zeng Xiaoqiang, Zhao Li, Li Lei, Yang Yan, Sun Meiju, Hao Jichen, Song Yingguang, Wang Shumin, Han Weimin, Wang Xianming, Wang Zhiqin. The previous versions of the standards replaced by this standard are. ---GB/T 20202-2006. Agricultural ethylene-vinyl acetate copolymer (EVA) blown film

1 Scope

This standard specifies the terminology and definition of agricultural ethylene-vinyl acetate copolymer (EVA) blown film (hereinafter referred to as EVA film). Sense, classification and code, specifications and recommended thickness, requirements, test methods, inspection rules, marking, packaging, transportation and storage. This standard is applicable to the internal addition type ethylene-vinyl acetate copolymer used in agricultural large, medium and small sheds and greenhouse transparent covering materials. The shed film of the object. This standard does not apply to the shed film of ethylene-vinyl acetate copolymer produced by the T-type machine head.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. Determination of tensile properties of plastics - Part 3. Test conditions for films and sheets GB/T 2035-2008 plastic terminology and its definition GB/T 2410-2008 Determination of light transmittance and haze of transparent plastics GB/T 2828.1-2012.Sampling procedures for counting sampling - Part 1. Quantitative inspection by batches plan Standard environment for GB/T 2918 plastic sample conditioning and testing GB/T 6040-2002 General rules for infrared spectroscopy GB/T 6672-2001 Plastic film and sheet thickness measurement - Mechanical measurement GB/T 6673-2001 Determination of length and width of plastic films and sheets GB/T 16422.2-2014 exposure test methods for light source of plastics - Part 2. Xenon arc lamps GB/T 30925-2014 Plastic ethylene-vinyl acetate copolymer (EVAC) thermoplastic vinyl acetate content Determination QB/T 1130-1991 Test method for plastic right angle tearing performance

3 Terms and definitions

The following terms and definitions as defined in GB/T 2035-2008 apply to this document. 3.1 Agricultural ethylene-vinyl acetate copolymer film ethylene-vinylacetatecopolymerblowncoveringfilmforagriculture Ethylene-vinyl acetate copolymer resin (EVA) or its combination with low density polyethylene (PE-LD), linear low density polyethylene (PE-LLD), metallocene linear low-density polyethylene (PE-MLLD) together as a basic raw material, adding a certain proportion of weathering agents, dripping agents, etc. Produced by extrusion blow molding, the average content of vinyl acetate (VA) is not less than 4.0%, as the light transmission of large, medium and small sheds for agricultural plastics. Cover material. GB/T 20202-2019 Ethylene-vinyl acetate copolymer (EVA) blown covering film for agriculture ICS 83.140.10 G33 National Standards of People's Republic of China Replace GB/T 20202-2006 Agricultural ethylene-vinyl acetate copolymer (EVA) blown film Published on.2019-08-30 2020-03-01 implementation State market supervision and administration China National Standardization Administration issued

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 20202-2006 "Ethylene-vinyl acetate copolymer (EVA) blown film for agricultural use". This standard and Compared with GB/T 20202-2006, the main technical changes are as follows. --- Increased astigmatism shed film terms and definitions (see 3.3); --- Removed translucent shed film and opaque shed film (see 3.3, 3.4 of.2016 edition); --- Increased astigmatism in the classification (see 4.1); --- Increase the range of product recommended thickness (see 5.2); --- Modified the width limit deviation (see 6.1, 5.1 of the.2006 edition); --- Revised the thickness limit deviation and the average deviation index (see 6.2,.2006 edition 5.2); --- Revised the mechanical performance index (see 6.5, 5.5 of the.2006 edition); --- Revised the transmittance and haze performance indicators (see 6.7, 5.5 of the.2006 edition); --- Revised tensile strength and fracture nominal strain test method (see 7.6,.2006 version 6.6); --- Revised inspection rules (see Chapter 8, Chapter 7 of the.2006 edition). This standard was proposed by the China Light Industry Association. This standard is under the jurisdiction of the National Plastics Standardization Technical Committee (SAC/TC48). This standard was drafted. Huadun Snow Plastic (Gu'an) Co., Ltd., Anyang Plastics Co., Ltd., North Huajin Chemical Industry Co., Ltd., Baishan Xifeng Plastic Industry Co., Ltd., Changchun Welfare Plastics Co., Ltd., Hebei Kelun Plastics Technology Co., Ltd. Division, Henan Yinfeng Plastic Co., Ltd., Hangzhou Xinguang Plastic Co., Ltd., Harbin Plastics Co., Ltd., Jiaozuo Chunchun Plastic Co., Ltd. Lanzhou Petrochemical Hongda Company, Qingdao Hongda Plastics Corporation, Shandong Qingtian Plastic Industry Co., Ltd., Shandong Tianhe Plastic Co., Ltd., Tian Tianjin Tiansu Technology Group Co., Ltd. Second Plastic Products Factory, Yuxi Xuri Plastics Co., Ltd., Beijing Yanshan Petrochemical High-tech Limited liability company, Beijing Tianzhu Auxiliary Co., Ltd., Sinopec Beijing Chemical Industry Research Institute, Gansu Fuyu Plastic Industry Co., Ltd. The main drafters of this standard. Liu Bingwei, Qin Lijie, Jiang Ruiping, Yang Lan, Hu Wenping, Yin Junhua, Zhang Dianxiang, Mu Jianzhang, Zhao Ligong, Lu Weidong, Zeng Xiaoqiang, Zhao Li, Li Lei, Yang Yan, Sun Meiju, Hao Jichen, Song Yingguang, Wang Shumin, Han Weimin, Wang Xianming, Wang Zhiqin. The previous versions of the standards replaced by this standard are. ---GB/T 20202-2006. Agricultural ethylene-vinyl acetate copolymer (EVA) blown film

1 Scope

This standard specifies the terminology and definition of agricultural ethylene-vinyl acetate copolymer (EVA) blown film (hereinafter referred to as EVA film). Sense, classification and code, specifications and recommended thickness, requirements, test methods, inspection rules, marking, packaging, transportation and storage. This standard is applicable to the internal addition type ethylene-vinyl acetate copolymer used in agricultural large, medium and small sheds and greenhouse transparent covering materials. The shed film of the object. This standard does not apply to the shed film of ethylene-vinyl acetate copolymer produced by the T-type machine head.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. Determination of tensile properties of plastics - Part 3. Test conditions for films and sheets GB/T 2035-2008 plastic terminology and its definition GB/T 2410-2008 Determination of light transmittance and haze of transparent plastics GB/T 2828.1-2012.Sampling procedures for counting sampling - Part 1. Quantitative inspection by batches plan Standard environment for GB/T 2918 plastic sample conditioning and testing GB/T 6040-2002 General rules for infrared spectroscopy GB/T 6672-2001 Plastic film and sheet thickness measurement - Mechanical measurement GB/T 6673-2001 Determination of length and width of plastic films and sheets GB/T 16422.2-2014 exposure test methods for light source of plastics - Part 2. Xenon arc lamps GB/T 30925-2014 Plastic ethylene-vinyl acetate copolymer (EVAC) thermoplastic vinyl acetate content Determination QB/T 1130-1991 Test method for plastic right angle tearing performance

3 Terms and definitions

The following terms and definitions as defined in GB/T 2035-2008 apply to this document. 3.1 Agricultural ethylene-vinyl acetate copolymer film ethylene-vinylacetatecopolymerblowncoveringfilmforagriculture Ethylene-vinyl acetate copolymer resin (EVA) or its combination with low density polyethylene (PE-LD), linear low density polyethylene (PE-LLD), metallocene linear low-density polyethylene (PE-MLLD) together as a basic raw material, adding a certain proportion of weathering agents, dripping agents, etc. Produced by extrusion blow molding, the average content of vinyl acetate (VA) is not less than 4.0%, as the light transmission of large, medium and small sheds for agricultural plastics. Cover material. ......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.

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