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GB/T 31355-2014 English PDF

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GB/T 31355-2014: Determination of water vapor transmission rate through dry packages -- Modulated infrared sensor
Status: Valid

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
GB/T 31355-2014	English	209	Add to Cart	3 days [Need to translate]	Determination of water vapor transmission rate through dry packages -- Modulated infrared sensor	Valid	GB/T 31355-2014

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Basic data

Standard ID	GB/T 31355-2014 (GB/T31355-2014)
Description (Translated English)	Determination of water vapor transmission rate through dry packages -- Modulated infrared sensor
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	A82
Classification of International Standard	83.140
Word Count Estimation	9,949
Date of Issue	12/31/2014
Date of Implementation	3/2/2015
Quoted Standard	GB/T 2918
Regulation (derived from)	National Standards Bulletin 2014 No. 33
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary	This standard specifies the test method under steady state conditions using an infrared sensor method to package and container of water vapor permeability testing. This standard applies to plastics and composites packages and containers (hereinafter refer

GB/T 31355-2014: Determination of water vapor transmission rate through dry packages -- Modulated infrared sensor

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Determination of water vapor transmission rate through dry packages - Modulated infrared sensor ICS 83.140 A82 National Standards of People's Republic of China Packages and containers of water vapor permeability Test Infrared sensor method Issued on. 2014-12-31 2015-03-02 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. This standard by the National Quality Supervision key product testing method Standardization Technical Committee (SAC/TC374) and focal points. This standard was drafted. National Packaging Product Quality Supervision and Inspection Center (Guangzhou), Southern Packaging Co., Ltd. Foshan, Guangdong Chaozhou Municipal Quality Supervision and Testing of the Liaoning Province Exit Inspection and Quarantine Technology Center, Guangzhou Quality Supervision and Testing Institute. The main drafters of this standard. Shi Yu, Lian Cheng small, famous Liu, Liu deep, Zheng Xue Fei, Lin Xiaoliang, Wu Jianxing, Hou Xiaodong, Ma Jun, Six Mile Square, Zhengcan Wei. Packages and containers of water vapor permeability Test Infrared sensor method

1 Scope

This standard specifies under steady state conditions using an infrared sensor package and method for testing water vapor permeability container Test method. This standard applies to plastics and composites packages and containers (hereinafter referred to as the package) water vapor permeability testing.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. GB/T 2918 plastic sample conditioning and testing of the standard environment (GB/T 2918-1998, ISO 291.1997, IDT)

3 Terms and Definitions

The following terms and definitions apply to this document. 3.1 The water vapor permeability watervaportransmissionrate; Under test conditions, the test reached equilibrium in a unit time, from the outside of the package through the amount of water vapor inside the commonly used The unit is grams per day (g/d). 3.2 Reference film referencespecimen Under certain experimental conditions, the water vapor permeability of known membrane.

4 Test principle

The package is mounted on the instrument, and the opening was sealed packages. Drying the carrier gas through the inside of the package, the package is placed on the outside of the known phase Humidity environment. Since the inside and outside of the package there is a certain difference in humidity, water vapor from the high humidity side, low humidity to seep through the side wall of the package through. Through the wall of water vapor package transmitted together with a carrier gas to the infrared sensor, the sensor measures the infrared energy absorbed by the water vapor in the Ratio, produces an electrical signal of a certain intensity, concentration and strength of the electrical signal is proportional to water vapor. Within a certain time by detecting electrical signals The strength of water vapor transmission rate of the sample is calculated.

5 Sample

The sample should be representative, to ensure a good seal. Creases or other defects affect the test results.

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