T/GDPIA 17-2020 Mask-use modified polyvinylidene chloride bridge beam

Scope

Scope: This document specifies the requirements, test methods, inspection rules, marking, packaging, transportation, and storage of modified polyethylene nose strips for masks. This document applies to all-plastic nose strips made from polyethylene through modification, stretching, extrusion, and shaping. Main technical contents: 1. Scope: This document specifies the requirements, test methods, inspection rules, marking, packaging, transportation, and storage of modified polyethylene nose strips for masks. This document applies to all-plastic nose strips made from polyethylene through modification, stretching, extrusion, and shaping. 2. Normative references 3. Requirements 3.1 Appearance requirements 3.2 Environmental protection requirements 3.3 Hygiene requirements 3.4 Technical requirements 4. Test methods 4.1 Determination of test results 4.2 Appearance 4.3 Sample conditioning adjustment 4.4 Bending and rebounding angle of folded specimens 4.5 Right-angle bending and rebounding angle 4.6 Resistance to repeated bending 4.7 Odor 5. Inspection rules 5.1 Inspection classification and inspection items 5.2 Batching rules and sampling schemes 5.3 Judging rules and reinspection rules 6. Marking 7. Packaging, transportation, and storage

Development Information

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