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NFPA 701 织物和薄膜火焰传播测试方法 检测要求

时间 : 2021-03-03 15:36  来源 : 行业 作者 : 通准检测

NFPA 701:2019  Standard Methods of Fire Tests for Flame propagation of textiles and films织物和薄膜火焰传播测试方法

Conditioning

1) dried for at least 30 minutes at 105°C ± 3°C (220°F ± 5°F).

 

2) If the specimens melt or permanently deform at 105°C (220°F) or below, the specimens shall be conditioned at 20°C ± 5°C (68°F ± 9°F) for at least 24 hours prior to flame exposure.

Test Clause

Requirement

Sample size

Method 1

samples with areal density Less Than or Equal to 700g/m2, except the scope of Test Method 2

10 pieces in the size of 400mmX150mm, the length of specimens is parrallel to the machine direction

Method 2 (can be folded)

1. vinylcoated fabric blackout linings
2. plastic films used inside a building
3. fabrics for awnings, tents, tarps etc.
4.single-layer or multilayer fabrics, films, plastic blinds with area density greater than 700g/m2

4 pieces in the size of  610mm X1200mm, the length of specimens is parrallel to the machine direction

Method 2 (can not be folded)

 

15 pieces in the size of 125mm X1200mm, the length of specimens is parrallel to the machine direction

 Cleansing extra (if required)

如产品使用过程中会水洗则需要水洗

如需水洗,则以上样品数量加倍
Double specimens are required if washing procedure is needed.

Note: When a manufacturer claims that the material tested in accordance with this standard retains its flame resistance after cleaning or weathering, then need related washing or weathering procedure.

注:请在样品上注明使用面(即外露面、正面)。

Turnaround time: normal (5 working days), express (3 working days).

所需时间: 标准(5 个工作天), 加快(3 个工作天).


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