BS 4790：1987测试标准详解

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BS 4790：1987

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）


3 T7 g3 Y6 \6 o( cScope: It is applicable to all types of textile floor coverings whether loose-laid or fully adhered and used with or without an underlay
适用范围：适用于所有类型的纺织品地板覆盖物。

Method of mounting test specimens: loose-laid ,fully adhered, loose-laid with an underlay
, J6 v' z) V5 r! H- C2 T8 ?) Z样品安装方法：松铺型，完全粘附型，松铺带衬垫型

2 o5 i9 ]+ w" y- sTest 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	Standard 7 i8 }6 q) R) S( [3 m$ Q( `: b	Requirement
Flame ( V8 q6 D" {! A6 L& O. Y" `* c	BS5287	ⅰ）If the floor covering has a low radius(up to 35mm) of effects of ignition # V& F: j) s& g- v- a Pass 如果地板覆盖物表面燃烧半径少于35mm  通过 . ?0 ~. |' l2 k" }2 L+ e( |& rⅱ）If the floor covering has a medium radius(over 35 up to 75) of effects of ignition . m' c7 _4 R: P* Z1 w  ]Pass 0 `! g/ Q% X" Y7 Y- e6 F$ t& N如果地板覆盖物表面燃烧半径大于35mm少于75mm  通过 ⅲ）If the floor covering has a high radius(over 75mm)of effects of ignition Failure 如果地板覆盖物表面燃烧半径大于75mm  失败 , ]4 X$ w) `- \

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& ^0 f6 {, H/ |0 N) ]( ~9 RConditioning: At least 24Hours in Humidity of 65+-2%and a temperature of 20degree
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