GB/T 22921-2008 Active National standards

GB/T 22921-2008 Paper and board—Determination of water vapour transmission rate of sheet materials—Dynamic sweep and static gas methods

GB/T 22921-2008 Paper and board—Determination of water vapour transmission rate of sheet materials—Dynamic sweep and static gas methods

Publish Date: 2008-12-30 Implement Date: 2009-09-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 22921-2008

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Paper making

ICS Name: Comprehensive Paper-making Technology

Publish Date: 2008-12-30

Implement Date: 2009-09-01

Pages: 8 pages

Scope

This standard specifies a general method for determining the water vapor permeability of thin-page materials using either the dynamic airflow method or the static gas method.
This standard is applicable to materials with a thickness not exceeding 38 mm and a water vapor permeability ranging from 0.05 g/(m2·d) to 65 g/(m2·d).

Development Information

Word Count: 12 Thousand words Pages: 8 pages

Referenced Standards

ISO 2528:1995 GB/T 450-2002 Paper and board—Sampling for testing GB/T 450-2008 Paper and board—Sampling for testing and identification of machine and cross direction,wire side and felt side GB/T 10739-2002 Paper, board and pulps—Standard atmosphere for conditioning and testing GB/T 10739-2023 Paper,board and pulps—Standard atmosphere for conditioning and testing

Adopt standards

ISO 9932:1990

Related Standards

GB/T 12032-1989 Replaced

GB/T 12032-1989 Paper and board—Preparation of a offset print for test gloss

Publish Date: 1989-12-27

GB/T 2677.1-1993 Active

GB/T 2677.1-1993 Fibrous raw material of sampling for analysis

Publish Date: 1993-03-01

GB/T 2677.2-1993 Replaced

GB/T 2677.2-1993 Fibrous raw material—Determination of moisture content

Publish Date: 1993-03-01

GB/T 2677.3-1993 Replaced

GB/T 2677.3-1993 Fibrous raw material—Determination of ash

Publish Date: 1993-03-01

GB/T 2677.4-1993 Active

GB/T 2677.4-1993 Fibrous raw material—Determination of water solubility

Publish Date: 1993-03-01

GB/T 2677.5-1993 Active

GB/T 2677.5-1993 Fibrous raw material—Determination of one percent sodium hydroxide solubility

Publish Date: 1993-03-01