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BS 4790：19878 q6 \8 `' T9 d
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Determination of the effects of a small source of ignition on textile floor coverings4 `- c8 R) g/ P% H y
（hot metal nut method）
* M; o, {2 D8 ^! k; M8 o) d小火源对纺织物地板覆盖物作用效果（热金属核法）) P8 j# _. Q% a8 J& z8 T9 F
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Scope: It is applicable to all types of textile floor coverings whether loose-laid or fully adhered and used with or without an underlay/ S+ A: d! M# ^) a2 }
适用范围：适用于所有类型的纺织品地板覆盖物。$ [" m5 s$ A) h; ]3 ?/ e8 m
. F6 t, B% C% tMethod of mounting test specimens: loose-laid ,fully adhered, loose-laid with an underlay
7 f& { A0 x7 D$ o样品安装方法：松铺型，完全粘附型，松铺带衬垫型
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Test specimen: At least 3 test specimens each measuring 300mm*300mm - R/ b0 L9 \+ P3 y
测试样品：至少3个试样300mm*300mm
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Item
3 ?$ c. Z0 P# t( G, r8 _ | Standard % ]4 {" r$ o$ j: ?: B
| Requirement 6 r9 i1 C, v* v6 M& e! k3 m
| Flame x! p9 X4 O/ _" V2 k; y
| BS5287 + ~; ^- I/ M3 v7 ^$ i
| ⅰ）If the floor covering has a low radius(up to 35mm) of effects of ignition( {# s/ @3 a# z0 R
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1 n/ R% j: k8 V+ b0 c如果地板覆盖物表面燃烧半径少于35mm 通过% j; b; u2 r# t2 i
ⅱ）If the floor covering has a medium radius(over 35 up to 75) of effects of ignition ! g3 g8 H- a! M* ~+ D; h) q
Pass
$ F7 X, l2 E# t3 a* ~$ B如果地板覆盖物表面燃烧半径大于35mm少于75mm 通过
+ l5 S8 S; s2 I p, Qⅲ）If
5 y7 t( K2 w- D6 v" G0 N2 Z, xthe floor covering has a high radius(over 75mm)of effects of ignition , e& O2 p$ z! I
3 n0 N; h6 H v* x' m" h$ OFailure. w0 }- W7 y0 w8 @6 x6 L$ a
如果地板覆盖物表面燃烧半径大于75mm 失败
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, ^5 q: [6 ?: K: K. I8 o' x. KConditioning: At least 24Hours in Humidity of 65+-2%and a temperature of 20degree
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