GB 13735-2017 English PDF

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GB 13735-2017: Polyethylene blown mulch film for agricultural uses
Status: Valid

GB 13735: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB 13735-2017	199	Add to Cart	3 days	Polyethylene blown mulch film for agricultural uses	Valid
GB 13735-1992	319	Add to Cart	3 days	Polyethylene blown mulch film for agricultural uses	Obsolete

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Basic data

Standard ID: GB 13735-2017 (GB13735-2017)
Description (Translated English): Polyethylene blown mulch film for agricultural uses
Sector / Industry: National Standard
Classification of Chinese Standard: Y28
Classification of International Standard: 83.140.10
Word Count Estimation: 10,187
Date of Issue: 2017-10-14
Date of Implementation: 2018-05-01
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China

GB 13735-2017: Polyethylene blown mulch film for agricultural uses

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Polyethylene blown mulch film for agricultural uses ICS 83.140.10 Y28 National Standards of People's Republic of China Replacing GB 13735-1992 Polyethylene blow molding agricultural floor coverings 2017-10-14 Published 2018-05-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released

Foreword

5.1 and 5.5 of Chapter 5 of this standard are mandatory, others are recommended. This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB 13735-1992 "polyethylene blow agricultural land cover film", compared with GB 13735-1992, in addition to editorial The main changes are as follows. --- Modify the scope of application (see Chapter 1); --- Modify the classification (see Chapter 3,.1992 edition Chapter 3); --- Increased thickness and cover the use of time (see Chapter 4); --- Deleted the rankings (see.1992 edition of Table 2, Table 3, Table 5, Table 6, Table 7); --- Increased nominal thickness requirements (see 5.1.1); --- Modify the thickness deviation (see 5.1,.1992 version 4.2.1); --- Modify the width deviation (see 5.2,.1992 version 4.2.2); --- Modify the net mass deviation per volume (see 5.3,.1992 version 4.2.3); --- Modify the appearance (see 5.4,.1992 version 4.3); --- Modify the mechanical properties (see 5.5,.1992 version 4.4); --- Modified weathering performance (see 5.6,.1992 version 4.4); --- Modify the tensile load and fracture test method of nominal strain (see 6.7,.1992 version 5.6); --- Modified weathering test methods (see 6.9,.1992 version 5.8); --- Modify the inspection rules (see Chapter 7,.1992 edition Chapter 6); --- Modify the logo, packaging, transportation and storage (see Chapter 8,.1992 edition Chapter 7). This standard is proposed and managed by the Ministry of Industry and Information Technology. This standard was drafted by Dalian Institute of Plastics Co., Ltd., Baishan City Xifeng Plastic Co., Ltd., Chinese Academy of Agricultural Sciences agricultural environment And the Institute of Sustainable Development, Institute of Tobacco Research, Chinese Academy of Agricultural Sciences, Anhui Huachi Plastic Co., Ltd., Gansu Fuyu Plastic Co., Ltd. Division, Gansu Jiyang Plastic Co., Ltd., Gansu Tianbao Plastic Co., Ltd., Hangzhou, Zhejiang Province, Shin Kong Plastics Co., Ltd., Beijing Hua Shield Snow Plastic Group Co., Ltd., Shandong Qingtian Plastic Co., Ltd., Yuxi City sun Plastic Co., Ltd., Nanxiong Golden Leaf packaging materials Co., Ltd., Sichuan Province 犍 Luo City Zhonglie Plastic Co., Ltd., Tianjin Tian Plastic Technology Group Co., Ltd. Second Plastic Products Factory, River Yinfeng Plastic Co., Ltd. of Southern Province, Shandong Tianzhuang Environmental Protection Technology Co., Ltd., Xinjiang Tianye Co., Ltd., Beijing Tian-Gang Auxiliary limited liability Company, Beijing Plastics Quality Supervision and Inspection Station, Light Industry Plastics Processing Applications Institute. The main drafters of this standard. Li Bingjun, Peng Yongjie, Lu Weidong, Qin Lijie, Wang Zhiqin, Wang Chunqiu, Jiang Shihua, Chen Erhu, Jin Shuwei, Wang Zhenqiu, Yang Yu, Yin Junhua, Chen Pengyuan, Sun Meiju, Zhou Jinglun, Li Zhonglie, Zhao Li, Zhu Wu Lan, Li Tianhua, He Wenqing, Liu Xinmin. This standard replaces the standards previously issued as. --- GB 13735-1992. Polyethylene blow molding agricultural floor coverings

1 Scope

This standard specifies the classification of polyethylene blow agricultural ground cover film (hereinafter referred to as the film), the nominal thickness and cover the use of time, to Requirements, test methods, inspection rules, marking, packaging, transportation and storage. This standard applies to polyethylene as the main raw material, you can add the necessary additives used in blow molding production for the film covering the ground. This standard does not apply to the biodegradable film.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this article Pieces. For undated references, the latest edition (including all amendments) applies to this document. Plastics - Determination of tensile properties - Part 1. General principles GB/T 1040.3-2006 Plastics - Determination of tensile properties - Part 3. Test conditions for films and sheets GB/T 2828.1-2012 Sampling procedures for inspection - Part 1 - Batch-by-lot inspection by acceptance quality limit (AQL) plan GB/T 2918-1998 plastic sample conditioning and testing of the standard environment Plastics - Determination of thickness of films and sheets - Mechanical measurement GB/T 6672-2001 Plastics films and sheets - Determination of length and width GB/T 6673-2001 Plastics laboratory exposure test methods - Part 1. General GB/T 16422.2-2014 Plastics - Laboratory exposure test methods - Part 2. Xenon arc lamps Test method for right angle tearing property of plastic

3 categories

Membrane cover the use of time divided into two categories. Ⅰ type of anti-aging film; Ⅱ class for the ordinary film.

4 Nominal thickness and coverage of the use of time

The nominal film thickness and cover the use of time in Table 1. Table 1 nominal thickness and cover the use of time Category Nominal thickness/mm Coverage time/d 0.010, 0.012, 0.014, 0.015, 0.016, 0.018, 0.020, 0.025 ≧ 180 0.010, 0.012, 0.014, 0.015, 0.016, 0.018, 0.020, 0.025, 0.030 ≧ 60

5 requirements

5.1 thickness and thickness deviation 5.1.1 Thickness The minimum nominal film thickness shall not be less than 0.010mm. 5.1.2 thickness deviation Thickness limit deviation and average thickness deviation should meet the requirements of Table 2. Table 2 thickness limit deviation and average thickness deviation Nominal thickness d0/mm Limit deviation/mm Average thickness deviation /% 0.010 ≦ d0 < 0.015 0.003-0.002 0.015 ≦ d0 < 0.020 0.004-0.003 0.020 ≦ d0 < 0.025 0.005-0.004 0.025 ≦ d0 ≦ 0.030 0.006-0.005 -12 5.2 width limit deviation Width limit deviation should meet the requirements of Table 3. Table 3 width limit deviation in millimeters Nominal width w limit deviation w≤800 30-10 800 \u003cw≤1500 40-10 1500 \u003cw≤3000 50-10 3000 \u003cw≤5000 80-20 w > 5000 100-20 5.3 net mass limit deviation Each volume of net mass limit deviation should meet the requirements of Table 4. Table 4 net mass limit deviation in kilograms Nominal net mass of each volume m0 limit deviation m0 ≦ 10 0.25-0.10 10 \u003cm0≤15 0.30-0.10 m0 > 15 0.30-0.15 5.4 Appearance Film should not affect the use of bubbles, impurities, stripes, punctures, folds and other defects. Film roll should be tidy, there should be no obvious riot. Misalignment width, number of sections per roll, and length of each section shall meet the requirements of Table 5. Table 5 film requirements Project requirements Dislocation width a/mm ≤30 Number of segments per roll/section ≤2 Each length/m ≥100 a Dislocation width Single-layer winding is the difference between the width of the film roll and the nominal width of the film, and the double-layer winding is the difference between the width of the film roll and the bifurcation width of the film. Mechanical properties Mechanical properties should meet the requirements of Table 6. Table 6 Mechanical properties index project Claim 0.010mm≤d0 < 0.015mm0.015mm≤d0 < 0.020mm0.020mm≤d0 < 0.030mm Tensile load (vertical and horizontal)/N ≥ 1.6 ≥ 2.2 ≥ 3.0 Fracture nominal strain (vertical and horizontal) /% ≥ 260 ≥ 300 ≥ 320 Right angle tear load (vertical and horizontal)/N ≥ 0.8 ≥ 1.2 ≥ 1.5 5.6 weathering performance Ⅰ type of vertical aging after plastic film nominal strain retention should not be less than 50%.

6 test methods

6.1 Sample From the intact film roll outside the first cut not less than 2m, and then cut the length of not less than 1m film samples were tested. 6.2 Test condition adjustment and testing of the standard environment The condition of the sample should be adjusted according to the provisions of GB/T 2918-1998, the temperature is (23 ± 2) ℃, the adjustment time is not less than 4h, 6.3, 6.4, 6.7, 6.8, 6.9 tests should be carried out under these conditions. 6.3 Thickness and thickness deviation Thickness according to the provisions of GB/T 6672-2001 for measurement, according to equation (1) calculate the thickness limit deviation, according to equation (2) to calculate the average thickness deviation. Δd = dmax or min-d0 (1) In the formula. Δd --- thickness limit deviation, in millimeters (mm); dmax or min --- measured maximum or minimum thickness, in millimeters (mm); d0 --- nominal thickness in millimeters (mm). d = dn-d0 d0 × 100 (2) In the formula. d --- average thickness deviation,%; dn --- average thickness, in millimeters (mm); d0 --- nominal thickness in millimeters (mm). 6.4 width limit deviation According to the provisions of GB/T 6673-2001, with a precision of 1mm tape or steel ruler to measure, according to equation (3) to calculate the width of the pole Deviation. Δw = wmax or min-w (3) In the formula. Δw --- width limit deviation, in millimeters (mm); wmax or min --- measured maximum or minimum width, in millimeters (mm); w --- nominal width, in millimeters (mm). 6.5 net mass deviation With the amount of weighing 50g weighing, according to equation (4) calculate the net mass per roll deviation. Δm = m-m0 (4) In the formula. Δm --- net weight per volume deviation, in kilograms (kg); m --- measured net mass per roll, in kilograms (kg); m0 --- Nominal net mass per roll, in kilograms (kg). 6.6 Appearance Film take 1m2 sample visual observation under natural light. Film roll on-site observation and measurement. 6.7 Tensile load and fracture Nominal strain According to GB/T 1040.1-2006 and GB/T 1040.3-2006 provisions of the test, the use of type 2 sample, the sample width of 10mm, Fixture initial distance 50mm, test speed (500 ± 50) mm/min, stretched to the specimen fracture, measured the maximum tensile load, accurate to 0.01N. Fracture nominal strain according to equation (5) calculation. ε = ΔL L × 100 (5) In the formula. ε --- fracture nominal strain,%; ΔL --- Incremental distance between fixtures, in millimeters (mm); L --- initial distance between fixtures, in millimeters (mm). 6.8 Right angle tearing load According to the provisions of QB/T 1130-1991 test, single piece test, accurate to 0.1N. 6.9 weathering performance 6.9.1 Preparation of test equipment and specimens shall comply with the provisions of GB/T 16422.1-2006, the number and size of exposed samples as the aging equipment Depending on the size of the fixture, the number of test strips after exposure shall not be less than 10. Samples along the longitudinal direction of the membrane at the site of exposure as shown in Figure 1 A 10 mm wide strip is cut as shown, the sample is removed after the exposure test is completed, and a single spline is cut for testing. Longitudinal initial rupture of the specimen The nominal strain of longitudinal fracture after strain and exposure t hours shall be tested according to 6.7 and the arithmetic average shall be taken. The unit is millimeter Figure 1 shows the sample exposed 6.9.2 Test methods should be consistent with the provisions of GB/T 16422.2-2014, the irradiation method using method A, the irradiance is narrow band (340nm) 0.51W/(m2 · nm), the temperature control using a black standard thermometer, the cycle of exposure cycle No. 1, Ⅰ type of membrane test duration 600h. Fracture nominal strain retention rate according to equation (6) calculation. R = εt ε0 × 100 (6) In the formula. R --- fracture nominal strain retention rate,%; εt --- average fracture after the exposure t hours nominal strain,%; ε0 --- initial average fracture nominal strain,%.

7 inspection rules

7.1 Batch To batch as a unit for acceptance, the same formula, the same process conditions, the same specifications for the continuous production of products 50t for a group, if continuous Production a week, production less than 50t, a week of production for a group. 7.2 sampling 7.2.1 thickness, thickness limit deviation, width limit deviation, the net mass limit deviation per roll, the appearance According to GB/T 2828.1-2012 provisions of a normal inspection sampling plan, using the general inspection level Ⅰ, receiving quality limit (AQL) 6.5, see table 7. Each roll of film is a sample unit. Table 7 Sampling scheme unit is volume Batch Sample Acceptance Ac Rejection Re 2 ~ 25 2 0 1 26 ~ 150 8 1 2 151 ~ 280 13 2 3 281 ~ 500 20 3 4 501 ~ 1200 32 5 6 1201 ~ 3200 50 7 8 3201 ~ 10000 80 10 11 10001 ~ 35000 125 14 15 7.2.2 average thickness deviation, mechanical properties A random sample of each sample from the 7.2.1 test is to be tested. 7.3 factory inspection Factory inspection items for 5.1,5.2,5.3,5.4,5.5. 7.4 type test The type test items are all items in Chapter 5, and the artificial weather aging performance is inspected every five years. One of the following conditions, the type test should be carried out. a) trial-type identification of the production of new products or old products; b) After formal production, such as structure, raw materials, process have a greater change, assessment of product performance impact; c) During the normal production process, periodically or after a certain amount of production is accumulated, a test shall be carried out periodically to assess the stability of product quality; d) After the product is stopped for a long time, resume production; e) the factory inspection results and the previous type test results have a greater difference; f) When the national quality supervision agency requests for type inspection. 7.5 decision rules Thickness limit deviation, width limit deviation, net mass deviation, the appearance should be determined according to Table 7. If there are any unqualified items in the average deviation of thickness and the test results of mechanical properties, double samples shall be taken from the batch and the unqualified items shall be duplicated Inspection, there are still unqualified items, then the batch of products as unqualified. 8 logo, packaging, shipping and storage 8.1 mark 8.1.1 Each roll of film should be accompanied by product certification, including the product name, type, nominal thickness, width, reference length, net weight, Production date, manufacturer's name, manufacturer's address, executive standard, inspector's seal. 8.1.2 Product certification should be clearly marked on the location marked "after use, please recycle, reduce environmental pollution," the words. 8.2 Packaging Film roll film, kraft paper or woven bags. If there are special requirements, agreed upon by both supply and demand. 8.3 Transportation Transport should prevent mechanical collision and sun and rain. 8.4 Storage Products should be stored in a clean, cool warehouse, neatly stacked, no less than 2m away from the heat, no exposure, the product storage period from the date of production Period should not exceed 18 months, more than the storage period, after passing the test can be sold. ......

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