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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 :
8 t$ \/ ~9 K+ j Y' k2 wASTM F963-2008 CL4.12
继续探讨：
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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( R4 y# H* L9 r8 { X* h( q( Y' K
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ISO8124.1 - 2009 MOD 描述得比较详细：
& R4 U& d' \4 B) M: d+ X3 c t" EFlexible plastic film or flexible plastic bags without backing and with a minor dimension of > 100 mm and used" f: L9 d+ f! E% O0 o( K7 o) v
in toys shall either
8 u; }9 S# h6 ~- j( l/ V0 ca) have an average thickness of W 0,038 mm and individual thickness of W 0,032 mm when tested in
' }( j! W) }0 ?% m9 o, u4 k# Oaccordance with 5.10 (determination of thickness of plastic film and sheeting), or
3 ]0 R f- b) M, M+ a* Y/ y: Q3 Hb) have perforations with well-defined holes (where material has been removed) of 1 % minimum area on5 E' b. Q5 j% g' u
any maximum area of dimensions 30 mm × 30 mm. See Figure 9.2 ?$ \& N0 b& b2 x, Q" x- E- 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' r1 L4 l+ d7 y* A/ W
vertical 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 m1 k+ s$ b$ @: ^% y0 y; m7 @* Q; A
than 9 mm2 which is more than 1 % of 900 mm2 (30 mm × 30 mm).
* M, p& U7 B: `$ M. t6 ^For plastic balloons, the thickness requirement in a) applies to double layers of plastic sheeting (i.e. the' A! C2 T( i I) Y- f+ }6 b( ^
thickness is measured without inflating or destroying the balloon).
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