BS 4790：1987测试标准详解

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BS 4790：1987
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* g0 y+ [6 {: N; ~2 D/ F, EDetermination 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）


Scope: 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。
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Method of mounting test specimens: loose-laid ,fully adhered, loose-laid with an underlay
样品安装方法：松铺型，完全粘附型，松铺带衬垫型

, |( Z. u: ~0 _+ H! cTest specimen: At least 3 test specimens each measuring 300mm*300mm
/ H% P- R8 G" f! g& N* J) |) M测试样品：至少3个试样300mm*300mm
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Item	Standard	Requirement ! J$ J. l! l  ]# Q0 @' e( ^% }
Flame + G: k/ w3 ?" l8 L: ?	BS5287 ! X  t4 O- \2 d: j2 ^( t	ⅰ）If the floor covering has a low radius(up to 35mm) of effects of ignition   V" C% F& r/ q/ f9 D! l4 p1 r Pass & ^( M' C* s* {4 U6 W如果地板覆盖物表面燃烧半径少于35mm  通过 0 `2 R+ q8 g$ ^; E4 U" C, O! Fⅱ）If the floor covering has a medium radius(over 35 up to 75) of effects of ignition 0 P8 c5 i# n$ p9 u2 N( Y5 \: sPass 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 0 |* P- P9 }. h% Q9 ?; w# k$ f* O; o * x$ w7 B$ R) WFailure 如果地板覆盖物表面燃烧半径大于75mm  失败

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