BS 4790：1987测试标准详解

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BS 4790：1987
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Determination of the effects of a small source of ignition on textile floor coverings
（hot metal nut method）
小火源对纺织物地板覆盖物作用效果（热金属核法）
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, h5 |- N; I# j- i* kScope: It is applicable to all types of textile floor coverings whether loose-laid or fully adhered and used with or without an underlay
( L8 K3 I, h- I/ N; }适用范围：适用于所有类型的纺织品地板覆盖物。

6 u, E# i" T0 ^/ Y( p: W2 @% @Method of mounting test specimens: loose-laid ,fully adhered, loose-laid with an underlay
3 r# l8 A* }- w9 r样品安装方法：松铺型，完全粘附型，松铺带衬垫型
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" z" \- U5 N. ITest specimen: At least 3 test specimens each measuring 300mm*300mm
测试样品：至少3个试样300mm*300mm
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Item 1 `' y% \' T9 Z+ r- `! c$ b	Standard	Requirement
Flame	BS5287 / P. ~0 N( p8 Z: E	ⅰ）If the floor covering has a low radius(up to 35mm) of effects of ignition " B" j, O8 K& c% H. _# z3 G 0 Z0 q; `3 z1 s6 c$ D, o 7 [- ?" A1 I, q. u& R0 GPass 如果地板覆盖物表面燃烧半径少于35mm  通过 ) N+ b' b; a- [6 q; {4 Wⅱ）If the floor covering has a medium radius(over 35 up to 75) of effects of ignition - k  _1 z4 {5 J5 _' b5 \8 gPass 如果地板覆盖物表面燃烧半径大于35mm少于75mm  通过 ) e5 P- Z" D# S) N# U& qⅲ）If the floor covering has a high radius(over 75mm)of effects of ignition 0 S, {3 h0 N+ n7 E# hFailure 7 E" k5 t2 i( n8 W如果地板覆盖物表面燃烧半径大于75mm  失败 & s# \  u3 S0 Y& P3 O- ]

Conditioning: At least 24Hours in Humidity of 65+-2%and a temperature of 20degree

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