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GB/T 22819-2008 English PDF

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US$139.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 22819-2008: High permeable paper -- Determination of air permeability
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 22819-2008	139	Add to Cart	3 days	High permeable paper -- Determination of air permeability	Valid

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Basic data

Standard ID: GB/T 22819-2008 (GB/T22819-2008)
Description (Translated English): High permeable paper -- Determination of air permeability
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: Y32
Classification of International Standard: 85-010
Word Count Estimation: 6,668
Date of Issue: 2008-12-30
Date of Implementation: 2009-09-01
Quoted Standard: GB/T 450; GB/T 10739
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 method for determination of high permeability permeability of the paper. This standard applies to air permeability greater than 1 X 102 ��m/(Pas) paper.

GB/T 22819-2008: High permeable paper -- Determination of air permeability

---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.
High permeable paper. Determination of air permeability ICS 85-010 Y30 National Standards of People's Republic of China High permeability paper Determination of air permeability Posted 2008-12-30 2009-09-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

The standards in the original light industry standard QB/T 1461-1992 "high air permeability assay paper" on. Appendix A of this standard is an informative annex. The standard proposed by China National Light Industry Council. This standard by the National Standardization Technical Committee of the paper industry. This standard was drafted. China Pulp and Paper Research Institute, China Paper Association Professional Committee of Standardization. The main drafters of this standard. Qiuwen Lun. High permeability paper Determination of air permeability

1 Scope

This standard specifies the method for determination of high air permeability of the paper. This standard applies to air permeability of greater than 1 × 102μm/(Pa · s) of paper.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB/T 450 and take samples to an aspect of paper and paperboard samples, positive and negative determination (GB/T 450-2008, ISO 186. 2002, MOD) GB/T 10739 paper, paperboard and pulp sample processing and testing standard atmospheric conditions (GB/T 10739-2002, eqv ISO 187. 1990)

3 Terms and Definitions

The following terms and definitions apply to this standard. 3.1 When a pressure differential exists on both sides of the paper, the performance of the air through the paper. 3.2 Under the conditions specified in units of time and a predetermined pressure, the average air flow through the unit area of \u200b\u200bthe paper that, in cubic centimeters per Cm sec [cm3/(cm2 · s)] FIG. 3.3 Under the conditions specified in units of pressure per unit time and the average air flow rate per unit area of \u200b\u200bthe paper adopted in microns per Paz Cards second [μm/(Pa · s)] represent [1mL/(m 2 · Pa · s) = 1μm/(Pa · s)]. Principle 4 According to methods and test parameters specified in the specimen holder in the instrument ventilation air intakes, and then adjust the fan speed, so that both sides reach a sample Predetermined pressure, measured air permeability of the paper according to size orifice size and pressure on both sides.

5 Equipment

5.1 Measurement of air permeability of the instrument shown in FIG. 1, which mainly consists of from 5.2 to 5.6 part specified. 5.2 specimen clamping devices. make the specimen deformation, the edge does not leak. This means to ensure that (38.5 ± 0.2) cm2 test area. 5.3 Fan. variable speed, air can be sucked so that both sides of the paper to the desired pressure. 5.4 inclined manometer and a vertical manometer. for measuring differential pressure. Inclined gauge range is 0 ~ 245Pa (0 ~ 25mm water column), vertical Straight gauge range is 0 ~ 3922Pa (0 ~ 400mm water column). 5.5 Determination of air flow means and a calibrated orifice. its flow deviation shall not exceed ± 2%. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 22819-2008_English be delivered?

Answer: Upon your order, we will start to translate GB/T 22819-2008_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 22819-2008_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 22819-2008_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.