T/WS 0002-2021 Active Group standards

T/WS 0002-2021 Two-way stretched polypropylene tissue packaging film

Publish Date: 2021-01-29 Implement Date: 2021-02-10 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/WS 0002-2021

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Synthetic materials

ICS Name: Films and sheets

Publish Date: 2021-01-29

Implement Date: 2021-02-10

Scope

Main technical specifications: Physical and mechanical properties: - Tensile strength/MPa: longitudinal ≥ 130, transverse ≥ 230. - Nominal elongation/percentage: longitudinal ≤ 180, transverse ≤ 70. - Heat shrinkage rate/percentage: longitudinal ≤ 4.5, transverse ≤ 3.5. - Haze/percentage: thickness ≤ 30 μm, haze ≤ 2.0. - Coefficient of dynamic friction on treated surface ≤ 0.25, untreated surface ≤ 0.25. - Wettability/mN/m: treated surface ≥ 38, untreated surface ≤ 32. - Heat sealing strength/N/15mm: treated surface ≥ 2.0, untreated surface ≥ 2.2. - Glossiness/percentage ≥ 80. - Water vapor permeability/[g/(·24h·0.1mm)] ≤ 2.0. Note: - "Untreated surface" refers to surfaces that have not undergone corona, flame, or plasma treatment. - "Treated surface" refers to surfaces that have undergone corona, flame, or plasma treatment.