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发表于 2011-11-17 18:53
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引用第9楼03411007于2011-11-17 14:59发表的 :
/ J: _: X8 M- s1 e& W" HASTM F963-2008 CL4.12
继续探讨：# y4 k" b, J5 ?
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ASTM F963 CL4.12 只是谈到要求的厚度及说明哪些不适应。没有具体谈到：规定的尺寸里要打多大的孔或多大面积的孔' c# T+ N7 X" x5 k& v/ l8 g6 t/ j# x$ `
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ISO8124.1 - 2009 MOD 描述得比较详细：, J r4 ^7 c7 k
Flexible plastic film or flexible plastic bags without backing and with a minor dimension of > 100 mm and used
' T1 U6 {8 n6 t/ U8 Qin toys shall either
. F B5 n5 Q9 s' k+ Oa) have an average thickness of W 0,038 mm and individual thickness of W 0,032 mm when tested in
% Y" S4 y- u6 Oaccordance with 5.10 (determination of thickness of plastic film and sheeting), or
* q( b7 E; ]' mb) have perforations with well-defined holes (where material has been removed) of 1 % minimum area on
3 M3 E7 ]2 f" T" u- h( k& Z! Y. Many maximum area of dimensions 30 mm × 30 mm. See Figure 9.$ q% b! |3 [9 X. S f# D, L5 e' q/ B
NOTE The requirement in 4.10 b) can be fulfilled by having 3,4 mm diameter holes in a square grid pattern where the
" i x- @3 b+ q) x) x) B9 L Lvertical and horizontal distance between the centre of two holes is 22,9 mm or less (the area of a 3,4 mm hole is larger
3 l' M2 u$ _* D& r0 q. V1 W! Uthan 9 mm2 which is more than 1 % of 900 mm2 (30 mm × 30 mm).
% |$ N: s2 c: jFor plastic balloons, the thickness requirement in a) applies to double layers of plastic sheeting (i.e. the& H2 p2 d" r, U1 M! {" p, D- A
thickness is measured without inflating or destroying the balloon).
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