GB/T 38880-2020 English PDF (GBT38880-2020)
GB/T 38880-2020 English PDF (GBT38880-2020)
GB/T 38880-2020: Technical specification of children mask
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
Technical Specification of Children Mask
ISSUED ON: MAY 06, 2020
IMPLEMENTED ON: MAY 06, 2020
Issued by: State Administration for Market Regulation;
Standardization Administration of PRC.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative References ... 4
3 Terms and Definitions ... 5
4 Classification and Specifications ... 6
5 Technical Requirements ... 6
6 Test Methods ... 8
7 Inspection Rules ... 11
8 Packaging, Marking, Safety Warnings, Storage and Transportation ... 11 Appendix A (Normative) Requirements for Tested Head Mold ... 14
Bibliography ... 16
Technical Specification of Children Mask
This Standard specifies the terms and definitions, classification and specifications, technical requirements, test methods, inspection rules, packaging, marking, safety warnings, storage and transportation of children mask (hereinafter referred to as mask). This Standard is applicable to the masks worn by children 6 years old and above, 14 years old and below to filter particulate matter in the air, blocking microorganisms, pollen, spray, etc.
This Standard is not applicable to mask containing electric air supply (exhaust) device. 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 2912.1 Textiles - Determination of Formaldehyde - Part 1: Free and Hydrolyzed Formaldehyde (Water Extraction Method)
GB/T 7573 Textiles - Determination of pH of the Aqueous Extract
GB/T 14233.1-2008 Test Methods for Infusion Transfusion Injection Equipment for Medical Use - Part 1: Chemical Analysis Methods
GB 15979-2002 Hygienic Standard for Disposable Sanitary Products
GB/T 17592 Textiles - Determination of the Banned Azo Colorants
GB 18401-2010 National General Safety Technical Code for Textile Products GB/T 29865 Textiles - Tests for Color Fastness - Color Fastness to Rubbing - Small Areas
GB/T 31702-2015 Testing Method for Sharpness of Attached Components on
The resistance value of the airflow that penetrates through the mask body under specified conditions.
NOTE: Its unit is Pa.
4 Classification and Specifications
According to the performance of masks, children masks are divided into child protective mask (F) and child hygiene mask (W).
According to the size of head and face of children at different ages, children masks are divided into small (S), medium (M) and large (L).
5 Technical Requirements
5.1 Basic requirements
5.1.1 The mask shall be able to cover the mouth, nose and jaw safely and firmly without odor, and shall not significantly affect the visual field.
5.1.2 The raw materials of the mask shall not use recycled materials; materials known to cause skin irritation or other adverse reactions shall not use; and the materials shall not undergo chlorine bleaching treatment. The residual amount of other restricted substances shall meet the relevant requirements. The used materials shall ensure that the mask does not break or deform during its normal service life.
NOTE: The mask supplier should be able to prove that its material meets such requirements. It may prove that the textile material used in the mask meets the requirements of category 4.2A in GB 31701-2015 by accepting inspection or providing a test report.
5.1.3 Masks shall not use tie-on mask; and adjustable mask straps should be used. 5.1.4 The mask shall be easy to wear and take off; there shall be no obvious feeling of pressure or tenderness during wearing; and there shall be no obvious effect on the head movement.
5.1.5 For masks equipped with nose clips, the nose clips shall be made of plastic material.
5.1.6 For masks equipped with a breathing valve, the parts inside the breathing valve 6.6 Migratable optical brightener
It shall be implemented according to FZ/T 01137; cut the sample at the contact layer between the mask and human face.
6.7 Residue of ethylene oxide
It shall be implemented according to the provisions of Clause 9 in GB/T 14233.1-2008. Take a parallel sample to test; the sample is cut from the mask body. If the one test result is qualified and the other is unqualified, the average calculation shall not be performed. The sample shall be re-taken, and the highest value shall be used as the test result. The result calculation is expressed by relative content, and retain one digit after the decimal point.
6.8 Nose clip length
Take 3 samples for testing; measure by general or special measuring tools with accuracy of 0.1cm.
6.9 Folding resistance of nose clip
Take 2 samples. Take the middle of the nose clip as the test point; fold the nose clip in half for 20 times with hands or other suitable instruments.
NOTE: For the convenience of testing, the nose clip and the surrounding covering may be cut off from the mask.
6.10 Breaking strength of mask strap, and the connection between mask strap and body
It shall be implemented according to the provisions of 6.9 in GB/T 32610-2016. 6.11 Inhalation resistance
It shall be implemented according to the provisions of 6.7 in GB/T 32610-2016. The test flow rate is (45±2) L/min; and the size of the head mold shall meet the requirements of Appendix A.
6.12 Exhalation resistance
It shall be implemented according to the provisions of 6.8 in GB/T 32610-2016. The test flow rate is (45±2) L/min; and the size of the head mold shall meet the requirements of Appendix A.
6.13 Particle protective performance
It shall be implemented according to the provisions of Appendix B in GB/T 32610-2016. 7 Inspection Rules
Products with the same variety and the same specification (model) according to the delivery batch number are regarded as inspection batches. Random samples are taken from each inspection batch according to the test requirements; and the number of the samples must at least meet the requirements of each individual test specified in Clause 6. When the delivery quantity of the same delivery batch of child hygiene masks is greater than 500,000, and the delivery quantity of the same delivery batch of child protective masks is greater than 100,000, the sampling quantity shall be doubled. 7.2 Quality judgment
7.2.1 Appearance quality judgment
The appearance quality is tested according to 6.1; and at least 8 or more samples meet the requirements of 5.2. If the requirements of 5.2 are met, then it shall be judged to be qualified; otherwise, it is judged to be unqualified.
7.2.2 Intrinsic quality judgment
If the intrinsic quality meets the requirements of 5.3, it shall be judged to be qualified; otherwise it is judged to be unqualified.
7.2.3 Results judgment
If the appearance quality and the intrinsic quality are all qualified, the batch of products shall be judged to be qualified; otherwise the batch of products is judged to be unqualified.
8 Packaging, Marking, Safety Warnings, Storage and
The mask shall be sealed and packaged for easy access and avoid contamination before use.
The minimum sales package shall have the qualified mark of inspection; and the obvious parts shall be attached with a clear and identifiable mark. The mark shall include but not limited to the following contents:
a) Name and address of the manufacturer;
b) Product name and category [including the words "children protective mask (F)" or "children hygiene mask (W)"];
c) Product specifications [small (S), medium (M), large (L)];
d) Main raw materials;
e) Executive standard number;
f) Instructions for use (wearing method, safety warning, etc.);
g) Production date, shelf life, recommended use time (hours);
h) If disinfection is adopted, the disinfection method shall be indicated. 8.3 Safety warning
The minimum sales package or instruction manual of the mask shall include but not limited to the following warnings:
a) Children with breathing difficulties are not recommended to wear a mask. If they need to wear it, they shall follow the doctor's advice or wear other suitable respiratory protective equipment.
b) When using it, remove the mask packaging materials and other objects not related to the mask wearing in time.
c) Children shall wear masks under the care of adults; and caregivers shall observe and educate children to wear masks correctly. Children shall not fight in jest or for fun or engage in moderate and above-intensity exercise while wearing the mask; and shall not disassemble the breathing valve and the parts inside the breathing valve. If symptoms such as respiratory discomfort and skin allergies occur during wearing, the mask shall be removed in time; if necessary,
immediately see a doctor.
d) The mask shall be kept dry, avoid getting wet during use; and replace it in time if necessary.
e) Masks are not recommended to be reused after washing.
f) The used masks shall not be exchanged with others.
8.4 Storage and transportation
During storage and transportation, the product shall be sealed, not damaged, stained, or damp, pay attention to fire, rain, acid, alkali, and avoid directly exposing to strong