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GB/T 28895-2012 English PDF (GBT28895-2012)

GB/T 28895-2012 English PDF (GBT28895-2012)

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GB/T 28895-2012: Protective clothing -- Performance requirements of oil repellency, soil release, antistatic clothing

This Standard specifies the technical requirements, test methods and labels, etc. of the oil repellency, soil release, antistatic protective clothing. This Standard is applicable to the protective clothing worn by workers in petroleum, petrochemical and the like industries.
GB/T 28895-2012
NATIONAL STANDARD OF THE
PEOPLE REPUBLIC OF CHINA
ICS 13. 340.10
C 73
Protective Clothing - Performance Requirements of Oil
Repellency, Soil Release, Antistatic Clothing
ISSUED ON: NOVEMBER 05, 2012
IMPLEMENTED ON: MAY 01, 2013
Issued by: General Administration of Quality Supervision, Inspection and Quarantine;
Standardization Administration of PRC.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative References ... 4
3 Terms and Definitions ... 5
4 Technical Requirements ... 5
5 Test Methods ... 7
6 Inspection Rules ... 8
7 Packaging, Transportation and Storage ... 11
8 Label ... 11
Appendix A (Normative) Washing Method ... 14
Appendix B (Normative) Test Methods and Assessment of Soil Release
Performance ... 16
Bibliography ... 19
Protective Clothing - Performance Requirements of Oil
Repellency, Soil Release, Antistatic Clothing
1 Scope
This Standard specifies the technical requirements, test methods and labels, etc. of the oil repellency, soil release, antistatic protective clothing.
This Standard is applicable to the protective clothing worn by workers in petroleum, petrochemical and the like industries.
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 250 Textiles - Tests for Color Fastness - Grey Scale for Assessing Change in Color
GB/T 2912.1 Textiles - Determination of Formaldehyde - Part 1: Free and Hydrolyzed Formaldehyde (Water Extraction Method)
GB/T 3917.3 Textiles - Tear Properties of Fabrics - Part 3: Determination of Tear Force of Trapezoid-Shaped Test Specimens
GB/T 3920 Textiles - Tests for Color Fastness - Color Fastness to Rubbing GB/T 3921 Textiles ?€? Tests for Color Fastness - Color Fastness to Washing with Soap or Soap and Soda
GB/T 3922 Textiles - Testing Method for Color Fastness to Perspiration
GB/T 3923.1 Textiles - Tensile Properties of Fabrics - Part 1: Determination of Maximum Force and Elongation at Maximum Force Using the Strip Method
GB/T 5453 Textiles - Determination of the Permeability of Fabrics to Air GB/T 7573 Textiles - Determination of pH of the Aqueous Extract
GB/T 8629-2001 Textiles - Domestic Washing and Drying Procedures for Textile Testing
GB/T 8630 Textiles - Determination of Dimensional Change in Washing and Drying GB/T 12703.3 Textile - Evaluation for Electrostatic Properties - Part 3: Electric Charge
GB/T 12704.1 Textiles - Test Method for Water-Vapor Transmission of Fabrics - Part 1: Desiccant Method
GB/T 12903 Personal Protective Equipment Terminology
GB/T 13640 Size Designation of Protective Clothing
GB/T 13773.1 Textiles - Seam Tensile Properties of Fabrics and Made-Up Textile Articles - Part 1: Determination of Maximum Force to Seam Rupture Using the Strip Method
GB 18401 National General Safety Technical Code for Textile Products
GB/T 19977 Textiles - Oil Repellency - Hydrocarbon Resistance Test
GB 21147 Personal Protective Equipment - Protective Footwear
FZ/T 81007-2003 Casual Wear
3 Terms and Definitions
For the purpose of this document, the terms and definitions given in GB/T 12903 and the following apply.
3.1 Soil release
The Characteristics of the textiles that go through the soil release finishing, after being contaminated, the contamination can be removed easily by the ordinary washing method.
4 Technical Requirements
4.1 Fabrics
The physical and chemical properties of the fabrics of protective clothing shall meet the requirements of Table 1.
5.5 The tearing strength of the fabric of protective clothing shall be tested as per the method specified in GB/T 3917.3.
5.6 The moisture permeability of the fabric of protective clothing shall be tested as per the method specified in GB/T 12704.1.
5.7 The air permeability of the fabric of protective clothing shall be tested as per the method specified in GB/T 5453.
5.8 The dimensional stability to washing of the fabric of protective clothing and ready- made clothing shall be tested as per the method specified GB/T 8630; the washing shall conform to the provisions of Procedure-5A in Table 5 of GB/T 8629-2001; while the drying shall conform to the provisions of Procedure-A in 8.1 of GB/T 8629-2001. 5.9 The color fastness to soaping of the fabric of protective clothing shall be tested as per the method specified in GB/T 3921.
5.10 The color fastness to perspiration of the fabric of protective clothing shall be tested as per the method specified in GB/T 3922.
5.11 The color fastness to dry rubbing of the fabric of protective clothing shall be tested as per the method specified in GB/T 3920.
5.12 The anti-static property of the ready-made protective clothing shall be tested as per the method specified in GB/T 12703.3.
5.13 The shoulder, back rise strength value of the ready-made protective clothing shall be tested as per the method specified in GB/T 13773.1.
5.14 The Formaldehyde of the ready-made clothing shall be tested as per the method specified in GB/T 2912.1. The sample of the ready-made clothing contains the adhesive materials between the fabric and auxiliary material.
5.15 The pH value of the ready-made clothing shall be tested as per the method specified in GB/T 7573. The sample of the ready-made clothing contains the adhesive materials between the fabric and auxiliary material
6 Inspection Rules
6.1 Inspection types
The inspection is divided into type inspection, material inspection, exit-factory inspection and reliability sampling inspection. The test and inspection items and nonconforming classification are shown in Table 3.
b) When there are major changes in materials, styles and processes;
c) When the product has been in normal production for two years;
d) When the production is stopped for more than one year and the production is resumed;
e) When the national quality supervision agency proposes the type inspection requirements.
6.2.2 The samples for type inspection are randomly sampled from the products that pass the exit-factory inspection. The sampling number of protective clothing is three sets. Refer to Table 3 for the test items.
6.3 Material inspection
6.3.1 Material inspection shall include each layer of fabrics of protective clothing. 6.3.2 The fabric inspection shall be carried out according to the items specified in Table 3 according to the batch, which shall be accepted after passing the inspection. 6.4 Exit-factory inspection
6.4.1 The protective clothing shall be carried out exit-factory inspection by the manufacturer's quality inspection department according to the items specified in Table 3, and only after passing the inspection can the products leave the factory. 6.4.2 Exit-factory inspection shall be carried out in batches, and two sets of samples shall be randomly selected from each batch and tested in accordance with Table 3. 6.5 Reliability inspection
When there is one of the following situations, the product shall be inspected for reliability according to Table 3. If it does not meet the requirements, it cannot be used further, or it can no longer be used for rescue work:
a) The storage period is more than one year from the production date before the intended use;
b) The wearing period is one year, and the visual performance may be reduced; c) The protective clothing is rejected.
6.6 Judgment rules
6.6.1 Single piece qualification conditions: the number of unqualified items of type A inspection is equal to 0; the number of unqualified items of type B inspection is equal to 0; the number of unqualified items of type C inspection is less than or equal to 2. Or b) Product name;
c) Size and specification;
d) Trademark and / or manufacturer name;
e) Production date.
8.2 The product qualification certificate shall include but not limited to the following: a) The serial number and year number of this Standard;
b) Product name;
c) Size and specification;
d) The name of the manufacturer;
e) Production date;
f) The nominally qualified label;
g) Inspector label.
8.3 The product specification shall include but not limited to the following: a) The serial number and year number of this Standard;
b) Product name;
d) Manufacturer's name, address and contact information;
e) Production date;
f) Size and specification;
g) Applicable and inapplicable conditions;
h) Wearing instructions, including but not limited to the following special instructions: 1) When wearing in flammable and explosive places, putting on and taking off at the work site are prohibited;
2) When wearing in flammable and explosive places, it is forbidden to attach or wear any metal objects;
3) The outer clothing shall completely cover the inner clothing; the jacket of the two-piece structure of protective clothing shall be sufficient to cover the waist of the trousers, even if the wearer stoop down, it shall not be exposed; grinder to make the oil stain evenly discharged after grinding, and collect the oil stain. B.4.3 Use a scraper fineness meter to check the uniformity and fineness of grinding of the discharged oil stain; it shall be acceptable when the fineness reaches below 20??m. If the fineness does not reach below 20??m, the three-roll mill shall be fine-tuned to grind the oil stain for several times until the fineness of the discharged oil stain reaches the required level.
B.4.4 Take 14# engine oil and the prepared 5% oil stain; according to the proportion to prepare 1?€? standard oil stain; the ratio Wcarbon black: Wengine oil = 1: 999 (for instance, take 2g of 5% oil stain and 98g of 14# engine oil, prepare the 100g of 1?€? standard oil stain), use a homogenizer at a speed of 6500 r/min ~ 7500 r/min to make it evenly dispersed and ready for use.
B.4.5 The prepared oil stain shall be used within 8h. If it is placed for more than 8h, it shall be processed by a homogenizer to achieve uniform dispersion before use. B.5 Preparation of specimens for soil release fabrics
B.5.1 Cut specimens without appearance defects from a fabric that is soil release finishing at least 2m away from the end of the fabric. The specimen size is 150mm ?? 150mm. There are 4 blocks of specimens before and after washing treatment. Respectively, take 1 block of specimen before and after the washing-resistant treatment as a reference sample for rating.
B.5.2 Cut 6 blocks of colorless transparent polyethylene film, the size is 70mm ?? 70mm. B.5.3 Cut 6 blocks of qualitative filter paper, the size is 70mm ?? 70mm. B.6 Test procedure
B.6.1 Clean the test bench and lay the prepared 6 blocks of filter papers on the test bench.
B.6.2 Respectively lay 3 blocks of specimens without washing treatment and 3 blocks of specimens treated according to the procedure of B.5.1 on the filter paper. B.6.3 Take 0.2mL of 1?€? standard oil stain by a pipette; and slowly drip all the oil stain at the center of the specimen (tube mouth is 10mm ~ 15mm away from the cloth surface).
B.6.4 Put a piece of prepared colorless transparent polyethylene film on each sample dripped with oil stain; and put a counterweight on the place where the film contacts with the oil stain.
B.6.5 After staying for 1 min, remove the counterweight; remove the film; and continue to place the specimen at room temperature for (20 ?? 3) min. Then wash the oil stains.

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