GB/T 4455-2019Polyethylene blown covering film for agriculture (English PDF)
农业用聚乙烯吹塑棚膜
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
December 10, 2019
Implementation date
July 1, 2020
Scope
GB/T 4455-2019 is the English-translated version of 农业用聚乙烯吹塑棚膜.
GB/T 4455-2019 is the Chinese standard "Polyethylene blown covering film for agriculture".
Its scope clause reads: 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. Its clauses include terms and definitions.
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Document preview — GB/T 4455-2019
National Standard of the People's Republic of China
- ICS
- 83.140.10
- Classification
- G 33
- Replacing
- GB 4455-2006
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope
- 2 Normative references
- 3 terms and definitions
- 3.2 Transparent covering film
- 3.3 Translucentcoveringfilm
- 3.4 Astigmatismcoveringfilm
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%.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Referenced standards
Similar standards
Editions of GB/T 4455
| Edition | Title | Revision | Status |
|---|---|---|---|
| GB/T 4455-2019 | Polyethylene blown covering film for agriculture | current edition | Current |
| GB 4455-2006 | Polyethylene blown covering film for agriculture | previous edition | Superseded |
This page sells the current edition, GB/T 4455-2019. Earlier editions are listed for reference only.
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