T/AQB 3-2020 Active Group standards

T/AQB 3-2020 Mask-grade polypropylene melt-spun nonwoven fabric

Publish Date: 2020-07-24 Implement Date: 2020-07-28 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/AQB 3-2020

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Chemical fibers

ICS Name: Textiles

Publish Date: 2020-07-24

Implement Date: 2020-07-28

Scope

Main Technical Content: (1) Structure and Scope of the Standard This standard includes nine chapters: Scope, Normative References, Terms and Definitions, Designations and Grades, Product Classification, Technical Requirements, Test Methods, Inspection Rules, Packaging, Marking, and Storage and Transportation. This standard applies to nonwoven fabrics made from polypropylene as the main raw material by the meltblown method, which are used in mask production and play a filtering role. (2) Discussion of Main Technical Indicators, Parameters, and Test Verification 1. Terms and Definitions The standard defines four terms: meltblown fabric for protective masks, meltblown fabric for sanitary masks, meltblown fabric for other types of masks, and filter media resistance. 2. Product Classification Products can be classified according to their intended use: meltblown fabric for protective masks, meltblown fabric for sanitary masks, and meltblown fabric for other types of masks. 3. Designations and Grades Meltblown fabric for protective masks, meltblown fabric for sanitary masks, and meltblown fabric for other types of masks are respectively designated by F, W, and Q. The cutting width or width unit is expressed in mm, with the actual value of the cutting width or width indicated by its designation. For example, a cutting width of 260mm is designated as 260. The unit area mass is expressed in g/m2, with the actual value of the unit area mass indicated by its designation. For example, a meltblown fabric with a unit area mass of 25 g/m2 is designated as 25. Meltblown fabric for protective masks is divided into the KN series (for filtering salt-based particulate matter), the KP series (for filtering oil-based particulate matter), and the KNKP series (for filtering both salt-based and oil-based particulate matter). The KN series has four grades: KN90, KN95, KN99, and KN100. The KP series has three grades: KP90, KP95, and KP100. The KNKP series has three