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Flammability Testing for Children's Sleepwear CPSC 16 CFR 16

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Flammability Testing for Children's Sleepwear CPSC 16 CFR 16

Author: Date :2018-06-07 Views: order
vertical flammability tester
What This Test is Used For:
This standard provides a test method to determine the flammability of children's sleepwear, meaning any product of wearing apparel up to and including size 6X, such as nightgowns, pajamas, or similar or related items, such as robes, intended to be worn primarily for sleeping or activities related to sleeping, except for diapers/underwear, "infant garments" and "tight-fitting garments." 
 
"Infant garment" refers to those garments sized 9 months or smaller that fits within certain total length measurements. "Tight-fitting garments" are those in which the garment does not exceed maximum dimensions specified for each size at the chest, waist, seat, upper arm, thigh, wrist or ankle. They also cannot have trims that extend more than ? inch (6 mm) off the surface of the garment. 
 
Garments that are considered tight-fitting must be designated by hangtags (or a statement on packaged
garments) with specific requirements of size, font, and color. In addition, these items must have the words "Wear Snug-fitting, Not Flame Resistant" on the front of the center back care tag. 
 
How the Test Works
Five specimens (which comprise one sample) are suspended one at a time vertically in holders in a prescribed cabinet and subjected to a standard flame along their bottom edge for a specified time under controlled conditions. The char length, or distance from the lower edge of the specimen exposed to the flame to the end of the tear in the charred, burned or damaged area, is measured. To pass, the average char length of the five specimens cannot exceed 7 inches (17.8 cm). In addition, none of the individual specimens can have a char length of 10 inches (25.4 cm). 
 
Scientific Testing Requirements
For this test method, specimens are to be mounted before conditioning to minimize the time that they are exposed to an uncontrolled environment immediately before testing. (See Sample Preparation, below.) The mounted specimens must be exposed to freely circulating air in the oven in room 263 for 30 minutes at 105 degrees Celcius (221 degrees Fahrenheit). After this period is up, the mounted specimens are moved from the oven into a desiccator for 30 to 60 minutes to cool. No more than five specimens should be in the desiccator at one time. 
 
In addition, specimens representing garments that will be washed and dried by the end consumer must be laundered before testing. The specimens should be tested after one washing and after 50 typical home launderings. Items that do not withstand 50 washings may be tested at the end of the useful service life. Those items that are not to be laundered must be dry cleaned before testing. For more information, see CPSC 16 CFR 1615. 
 
Sample Preparation
1. In this case, each sample consists of five individual specimens.
2. Each sample should consist of two specimens that run parallel to one machine direction (warp or weft) and three specimens that run parallel to the other.
3. When cutting specimens, use care to avoid dirt, grease, wrinkles, etc.
4. Try to cut specimens so that each represents different warp and weft yarns.
5. Cut specimens to measure 3.5 inches by 10 inches (8.9 cm by 25.4 cm).
6. If fabrics to be tested are multi-layered, they must be hemmed to about one inch at the lower edge using a suitable thread and stitch. 
 
Mounting Specimens
1. The bottom edge of the specimen must be even with the bottom of the specimen holder.
2. Keep the specimen as flat as possible when mounting.
3. The sides of the specimen holder must cover ? inch (1.9 cm) on the long sides of the specimen. This will leave 2 inches (5.1 cm) of the center of the specimen exposed.
4. Clamp and/or tape the sides of the specimen so that the specimen will not shift during conditioning and testing.
5. At this point, condition the specimens according to the directions above. 
 
Flame Adjustment
1.Perform these steps with the hood fan turned off.
2.Use the needle valve to adjust the flame height of the burner to 1-1/2 inches (3.8 cm). 
 
Testing
1.Remove one mounted specimen from the desiccator and suspend it in the cabinet for testing.
2.Start the stop watch and move the flame under the specimen simultaneously.
3.Close the cabinet door.
4.Expose the specimen to the flame for 3 +/- 0.2 seconds. To stop the flame, turn off the gas supply.
5.Allow the specimen to continue burning. When the visible flame has extinguished, remove the specimen holder from the cabinet and lean it against the wall inside the ventilation hood. DO NOT put out the after-glow.
6.When the after-glow has ceased, remove the specimen from the hood and holder and place it on a clean flat surface.
7.After testing all specimens, vent the hood and cabinet to remove the smoke and/or toxic gases. 
 
Specimen Tearing
1. Fold the specimen lengthwise along a line through the highest peak of the charred or melted area.
2. Crease the specimen firmly by hand.
3. Unfold the specimen and insert the hook with eh correct weight in the specimen on one side of the
charred area ? inch (6.4mm) from the lower edge.
4. Tear the specimen by grasping the other lower corner of the fabric and gently raising the specimen and weight clear of the supporting surface.
5. Measure the char length as the distance from the end of the tear to the edge of the specimen exposed to the flame. 
 
 vertical flammability tester

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