GB/T 40353-2021Air filter paper (English PDF)
空气过滤纸
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
August 20, 2021
Implementation date
March 1, 2022
Scope
GB/T 40353-2021 is the English-translated version of 空气过滤纸.
GB/T 40353-2021 specifies air filter paper made mainly from microfibre glass wool by wet forming.
It defines the grades by filtration efficiency for particles of 0.3 µm and above, measured by the counting method: sub-high efficiency paper from 85% up to 99.95%, high efficiency paper from 99.95% up to 99.9995%, and ultra-high efficiency paper from 99.9995%, together with resistance, the initial value of the clean paper at rated air velocity.
It sets out the classification, requirements, test methods and inspection rules, and the marking, packaging, transport and storage of the paper. Referenced methods cover sampling, size, moisture, ash, tensile strength, bending stiffness and the efficiency and resistance test of GB/T 6165-2008. It was issued on 20 August 2021 and has applied since 1 March 2022.
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Document preview — GB/T 40353-2021
National Standard of the People's Republic of China
- ICS
- 85.060
- Classification
- Y 32
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
Foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules of Standardization Documents" Drafting.
1 Scope
This document specifies the terms and definitions, classification, requirements, test methods, inspection rules and signs, packaging, transportation, and storage of air filter paper.
This document is applicable to air filter paper made of microfiber glass wool as the main raw material and made by wet molding.
2 Normative references
The contents of the following documents constitute the indispensable clauses of this document through normative references in the text. Among them, dated quotations Only the version corresponding to that date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document.
GB/T 450 Paper and cardboard sample collection and the determination of the longitudinal and transverse directions, front and back sides of the sample
GB/T 451.1 Determination of the size and skewness of paper and paperboard
GB/T 462 Paper, paperboard and pulp analysis sample moisture determination
GB/T 742 Determination of burning residue (ash content) of papermaking raw materials, pulp, paper and paperboard (575°C and 900°C)
GB/T 2828.1 Sampling inspection procedure by attributes Part 1: Batch inspection sampling plan retrieved by acceptance quality limit (AQL)
GB/T 6165-2008 High efficiency air filter performance test method efficiency and resistance
GB/T 10342 Paper packaging and marking
GB/T 10739 Standard atmospheric conditions for handling and testing of paper, paperboard and pulp samples
GB/T 12914 Determination of Tensile Strength of Paper and Paperboard Constant Speed Tensile Method (20mm/min)
GB/T 22364-2018 Determination of bending stiffness of paper and cardboard
GB/T 34844-2017 wallpaper
3 Terms and definitions
The following terms and definitions apply to this document.
3.1 Sub-high efficiency air filter paper
Air filter paper with a particle size greater than or equal to 0.3µm by counting method filtration efficiency greater than or equal to 85% but less than 99.95%.
3.2 High efficiency air filter paper
The counting method for particles with a particle size greater than or equal to 0.3µm filters air with a filtration efficiency greater than or equal to 99.95% and less than 99.9995% filter paper.
3.3 Ultra-high efficiency air filter paper
Air filter paper with a particle size greater than or equal to 0.3µm by counting method filtration efficiency greater than or equal to 99.9995%.
3.4 Resistance
Under rated wind speed conditions, the initial filter value when the air filter paper is in a clean state before filtering dust.
Note: Resistance is expressed in Pa (Pa).
......
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
Normative references
- GB/T 450Paper and board -- Sampling for testing and identification of machine and cross direction, wire side and felt side
- GB/T 451.1Paper and board--Determination of size and deviation
- GB/T 462Paper, board and pulps - Determination of moisture content of analytical sample
- GB/T 742Fibrous raw material, pulp, paper and board -- Determination of residue (ash) on ignition at 575 degrees C and 900 degrees C
- GB/T 2828.1Sampling procedures for inspection by attributes - Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection
- GB/T 6165-2008Test method of the performance of high efficiency particulate air filter—Efficiency and resistance
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Related Standards
GB/T 10342-2002 — Paper--Package and mark
GB/T 10342-2026 — Paper, board and pulps - Packaging, labelling, transport and storage
GB/T 10739-2023 — Paper, board and pulps - Standard atmosphere for conditioning and testing
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