GB/T 24218.16-2017Textiles -- Test methods for nonwovens -- Part 16: Determination of resistance to penetration by water (hydrostatic pressure) (English PDF)

Foreword

GB/T 24218 Textiles – Test Methods for Nonwovens can be divided into the following

parts.

--- Part 1. Determination of Mass Per Unit Area;

--- Part 2. Determination of Thickness;

--- Part 3. Determination of Tensile Strength and Elongation (Strip Method);

--- Part 5. Determination of Resistance to Mechanical Penetration (Ball Burst

Method);

--- Part 6. Determination of Absorption;

--- Part 8. Determination of Liquid Strike-Through Time (Simulated Urine);

--- Part 10. Lint and Other Particles Generation in the Dry State;

--- Part 11. Run-off;

--- Part 12. Demand Absorbency;

--- Part 13. Repeated Liquid Strike-Through Time;

--- Part 14. Coverstock Wetback;

--- Part 15. Determination of the Air Permeability;

--- Part 16. Determination of Resistance to Penetration by Water (Hydrostatic

Pressure);

--- Part 17. Determination of Resistance to Penetration by Water (Spray Impact);

--- Part 18. Determination of Breaking Force and Elongation at Break (Grab Method);

--- Part 101. Saline Repellency (Mason Jar Method).

This Part belongs to Part 16 of GB/T 24218.

This Part was drafted as per the rules specified in GB/T 1.1-2009.

This Part adopts the re-drafting method to modify and use the ISO 9073-16. 2007

Textiles – Test Methods for Nonwovens – Part 16. Determination of Resistance to

penetration by Water (Hydrostatic Pressure).

The major technical differences and causes between this Part and ISO 9073-16. 2007

are as follows.

--- For the normative references, this Part adjusts the technical differences, so that

adapt to China's technical conditions; the adjusting situations mainly reflect in

the Clause 2 "Normative References"; the specific adjustment are as follows.

lambda Replace ISO 139 by GB/T 6529 which modifies and adopts the international

standards (see 7.2);

lambda Replace ISO 3969 by GB/T 6682 which modifies and adopts the international

standards (see 7.4);

lambda Replace ISO 10012 by GB/T 19022-2003 which equivalently adopts the

international standards (see 6.1);

lambda Delete the quotation of ISO 3951-5.

--- Modify 7.1 in ISO 9073-16. 2007 "Sampling as per the provisions of ISO 3951-5"

into "Sampling as per the product standard provision or agreement of relative

parties. Unless otherwise specified, cut the representative samples", which may

conform to our test procedures more.

--- Supplement the contents of 7.7 in ISO 9073-16. 2007; increase the accepting or

rejecting method against the results of edge leakage or single-place continuous

leakage; so that improve the operability of the judgment.

--- Delete the contents of 8.4 in ISO 9073-16. 2007; currently, the tester used

domestic and international can meet the requirements of such item.

--- Delete the Item i) and Item l) in the Clause 9 of ISO 9073-16. 2007; increase

"standard deviation, if required, gives the coefficient of variation" to Item j).

This Part does the following editorial modifications.

--- Unify the hydrostatic pressure in the standard into hPa;

--- Adjust the contents of 3.1 in ISO 9073-16. 2007 into NOTE in 5.1d); and correct

"0.000981m" into "0.0102m";

--- Modify the terminology in 3.2 of ISO 9073-16. 2007 into "resistance to penetration

by water of nonwoven materials";

--- Modify the contents in 5.1.1-5.1.5 of ISO 9073-16. 2007 into the column item

form;

--- Simplify the contents in 8.2 of ISO 9073-16. 2007;

--- Increase the NOTE in 8.3.

Textiles – Test Methods for Nonwovens

– Part 16. Determination of Resistance to Penetration by

Water (Hydrostatic Pressure)

1 Scope

This Part of GB/T 24218 specifies adopting the hydrostatic pressure method to

determine the resistance to penetration by water of nonwovens.

This Part is applicable to the nonwovens intended for use as resistance the liquid

penetration.

2 Normative References

The following documents are essential to the application of this document. For the

dated documents, only the versions with the dates indicated are applicable to this

document; for the undated documents, only the latest version (including all the

amendments) are applicable to this document.

GB/T 6529 Textiles – Standard Atmospheres for Conditioning and Testing (GB/T

6529-2008, ISO 139. 2005, MOD)

GB/T 6682 Water for Analytical Laboratory Use – Specification and Test Methods

(GB/T 6682-2008, ISO 3696.1987, MOD)

GB/T 19022-2003 Measurement Management Systems – Requirements for

Measurement Processes and Measuring Equipment (ISO 10012.2003, IDT)

3 Terms and Definitions

The following terms and definitions are applicable to this document.

6 Calibration

7 Procedures