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GB/T 4455-2019: Polyethylene blown covering film for agriculture
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Std ID	Version	USD	Buy	Deliver [PDF] in	Title (Description)
GB/T 4455-2019	English	279	Add to Cart	3 days [Need to translate]	Polyethylene blown covering film for agriculture
GB 4455-2006	English	479	Add to Cart	3 days [Need to translate]	Polyethylene blown film for agricultural uses
GB 4455-1994	English	319	Add to Cart	3 days [Need to translate]	Polyethylene blown film for agriculture
GB 4455-1984	English	RFQ	ASK	3 days [Need to translate]	Polyethylene blown film for agricultural uses

GB/T 4455-2019: Polyethylene blown covering film for agriculture

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Polyethylene blown covering film for agriculture ICS 83.140.10 G33 National Standards of People's Republic of China Replaces GB 4455-2006 Agricultural polyethylene blown film 2019-12-10 release 2020-07-01 implementation State Administration of Market Supervision Published by the National Standardization Management Committee

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB 4455-2006 "Agricultural Polyethylene Blown Plastic Shed Film". Compared with GB 4455-2006, this standard The changes are as follows. --- Added terms and definitions of astigmatic film (see 3.4); --- Removed the terms and definitions of opaque shed film (see 3.4 of the.2006 edition); --- Increased the astigmatism type in the classification (see 4.1); --- Removed the opaque type (see 4.1 of the.2006 version); --- Revised the range of product recommended thickness (see 5.2, 5.2 of the.2006 version); --- Modified the width limit deviation (see 6.1,.2006 version 6.1); --- Modified the thickness limit deviation and average deviation index (see 6.2 in.2006 version 6.2); --- Increased the requirement for net mass deviation greater than.200kg (see 6.4, 6.4 of the.2006 version); --- Modified the mechanical performance indicators (see 6.5, 6.5 of the.2006 version); --- Modified the light transmittance and haze performance indicators (see 6.7, 6.6 of the.2006 version); --- Modified the drip performance index (see 6.8 in.2006 version 6.7); --- Modified the tensile strength and fracture strain test conditions (see 7.6,.2006 version 7.6); --- Modified the inspection rules (see Chapter 8, Chapter 8 of the.2006 edition). This standard was proposed by the China Light Industry Federation. This standard is under the jurisdiction of the National Plastics Standardization Technical Committee (SAC/TC48). This standard was drafted. Huadun Snowflake Plastic (Gu'an) Co., Ltd., Anyang Plastic Chemical Co., Ltd., North Huajin Chemical Industry Co., Ltd., Baishan Xifeng Plastic Industry Co., Ltd., Changchun Welfare Plastics Co., Ltd., Hebei Kelun Plastic Technology Co., Ltd. Division, Henan Yinfeng Plastic Co., Ltd., Hangzhou Xinguang Plastic Co., Ltd., Harbin Plastic Five Co., Ltd., Jiaozuo Yongchun Plastic Co., Ltd., Lanzhou Petrochemical Hongda Company, Qingdao Hongda Plastic Corporation, Shandong Qingtian Plastic Industry Co., Ltd., Shandong Tianhe Plastic Co., Ltd., Tian Jinshi Tiansu Technology Group Co., Ltd. No. 2 Plastic Products Factory, Yuxi Xuri Plastic Co., Ltd., Beijing Yanshan Petrochemical Co., Ltd., Beijing Tianying Additive Co., Ltd., Sinopec Beijing Chemical Research Institute, Gansu Fuyu Plastic Industry Co., Ltd., Nanxiong City Golden Leaf Packaging Materials Co., Ltd. The main drafters of this standard. Liu Bingwei, Qin Lijie, Jiang Ruiping, Yang Yu, 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 Xianqing, Wang Zhiqin, Wang Zhenqiu. The previous versions of the standards replaced by this standard are. --- GB 4455-1984, GB 4455-1994, GB 4455-2006. Agricultural polyethylene blown film

1 Scope

This standard specifies the terms and definitions, classifications and codes, specifications and recommended thicknesses, requirements, test methods of agricultural polyethylene blown film Law, inspection rules, marking, packaging, transportation and storage. This standard applies to polyethylene ordinary shed film, polyethylene used in large, medium and small sheds of agricultural plastics and greenhouses. Shed film and internally-added polyethylene flow-drop aging-resistant film.

2 Normative references

The following documents are essential for the application of this document. For dated references, only the dated version applies to this article Pieces. For undated references, the latest version (including all amendments) applies to this document. GB/T 1040.3-2006 Determination of tensile properties of plastics. Part 3. Test conditions for films and sheets GB/T 2035-2008 plastic terms and definitions GB/T 2410-2008 Determination of light transmittance and haze of transparent plastics GB/T 2828.1-2012 Counting sampling inspection procedures Part 1. Batch inspection sampling retrieved by acceptance quality limit (AQL) plan GB/T 2918 Standard environment for conditioning and testing of plastic samples GB/T 6672-2001 Plastic film and sheet thickness measurement by mechanical measurement method GB/T 6673-2001 Determination of length and width of plastic films and sheets GB/T 16422.2-2014 Plastic laboratory light source exposure test methods-Part 2. Xenon arc lamps QB/T 1130-1991 Test method for right angle tear of plastics

3 terms and definitions

The terms and definitions defined in GB/T 2035-2008 and the following apply to this document. 3.1 Various polyethylene films produced by extrusion blow molding as transparent covering materials for agricultural large, medium and small greenhouses and greenhouses. 3.2 Transparent covering film Most of the incident light is transmitted, and the shed film on the back of the film can be clearly seen. 3.3 Translucentcoveringfilm It is difficult or impossible to see the film on the back of the film. 3.4 Astigmatismcoveringfilm Scatters most of the incident light, and the shed film has a transmittance ≥ 85% and a haze ≥ 50%. ...