T/CPPIA 41-2024 Active Group standards

T/CPPIA 41-2024 Agricultural functional polyolefin coated greenhouse film

Publish Date: 2024-03-20 Implement Date: 2024-04-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/CPPIA 41-2024

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Daily-use plastic products

ICS Name: Films and sheets

Publish Date: 2024-03-20

Implement Date: 2024-04-01

Scope

Scope: This document specifies the mechanical properties, light transmittance and haze, drip performance, weather resistance, and content of heavy metals and specific substances of functional polyolefin-coated greenhouse films (hereinafter referred to as "greenhouse films"), describes the sampling, conditioning, and corresponding test methods of the samples, stipulates the inspection rules, marking, packaging, transportation, and storage, and provides a classification and code system for technical specifications. This document applies to the production, inspection, and sales of greenhouse films made from polyethylene, ethylene-vinyl acetate copolymer, and other polyolefin resins as the main raw materials, with the addition of functional additives. The films are blow-molded, surface-treated, coated with anti-drip and anti-fog agents, and dried. Main technical contents: 5.1 Width limit deviation: The width limit deviation shall comply with Table 2. 5.2 Thickness limit deviation and average thickness deviation: The thickness limit deviation and average thickness deviation shall comply with Table 3. 5.3 Net mass deviation: The net mass deviation of each package or roll of greenhouse film shall comply with Table 4. 5.4 Appearance: The film surface shall be smooth, without defects such as bubbles, perforations, stripes, wrinkles, or tears that affect use; the coated surface shall not have scratches or stacking adhesion that affect use. The film surface shall not have impurities, crystals, or agglomerates larger than 2.0mm; the total number of impurities, crystals, or agglomerates of 0.6mm to 2.0mm in size per square meter shall not exceed 20. 5.5 Mechanical properties: They shall comply with Table 5. 5.6 Light transmittance and haze: 5.6.1 Type I TF-1, TF-2, TF-3, and TF-5 greenhouse films: Their light transmittance and haze shall comply with Table 6. 5.6.2 Type II TF-1, TF-2, TF-3, and TF-5 greenhouse films: Their light transmittance and haze shall comply with Table 7.