final exam Flashcards
Flammability of Apparel Textiles test
test warp and fill
mark side
dryclean or wash before and after
dry sample for 30 min and let cool in a desiccator
test sample within 45 sec with fire at 45 degree angle
report time in seconds of flame spread
Flammability of Childrens sleepwear test
cut sample in direction that is more flammable
test with fire
report residual flame time, char length, and afterglow time
perform before and after washing
pass fail test
REsidual flame time
time from removal of burner from the specimen to the final extinction of molten material or other fragments flaming on the base of the cabinet
flammability of carpets and rugs test
for all types of textile floor covering 8 samples wash off fire retardant and vacuum and dry samples place in dessicator to reach room temp put in test chamber and ignite flame must stop within 3 inches
Delamination Strength of Secondary Backing for Pile Floor Covering test
measures the force needed to pull the floor covering and backing apart use standard condition separate the backing 1.5" from the floor covering clamp to the machine at 12+- .5"/min •Delamination strength ▪Defined as (A+B+C)/3W ▪A=five peak average of specimen No.1 ▪B=five peak average of specimen No.2 ▪C=five peak average of specimen No.3 ▪W = specimen width in inches
standard condition
65% humidity +- 2
70degrees +- 2
Tuft Bind of Pile Floor Covering test
determines force required to pull a tuft completely out of pile floor covering
take 3 cut tuft from same row of the specimen
for looped pile select location where 3 adjacent loops are formed, cut completely through the 1st and 3rd loops and test the severe
repeat onto additional loops from other rows
Mushroom Apparel Flammability Tester (MAFT) test
Usually used for military clothing, firefighters, etc.
Sample size 24x12” sample is suspended from a collar pinned together
Flame from a no. 18 hypodermic needle
Ignition is on the surface 4” above the bottom of the sample
Flame can spread in different directions
Cut small hole in ignition area to let flame burn on both sides of the fabric to create the worst situation
The heat transferred to the inside of the specimen is measured by 16 thermocouples around the cylinder and 4 at the top of the ring of the cylinder
Rated 1-4
4- ignition occurs within ½ second
3- ignition does not occur in ½ second but in 1 second
2- ignition does not occur in 1 second
1- ignition times is 3-12 seconds and a max heat transfer is 0.096 cal/cm2
Factors affecting flammability
○ Product configuration (garment, chair, bed, clothing): Shape, Thread, Lining, Interfacing-interlinking, Duration of ignition, Other trims and accessories
○Fabric ignitability
○Rate of flame spread
○Heat transfer from fabric to victims body
○Duration of the burn
Classifications of 16 CFR 1610 Standard for Flammability of Clothing Textiles
Class 1:Normal
Class 2: Intermediate
Class 3: Rapid and intense
CPSC
US consumer product safety comission
CBHF
california bureau of home furnishings and thermal insulation
NIST
national institure of standards and technology (US dept of Commerce)
FFA
Flammable fabrics act
TB
technical bulletin (California regulation)
