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引用第9楼03411007于2011-11-17 14:59发表的 :
. z. k" Z3 \, K% K) E, v" pASTM 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
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ISO8124.1 - 2009 MOD 描述得比较详细：/ b) d: y( O1 D7 k& t1 r7 I( z6 N
Flexible plastic film or flexible plastic bags without backing and with a minor dimension of > 100 mm and used
2 U( I6 `1 j A& g { U* Ein toys shall either
5 X9 `+ t/ L; p5 o. b+ G$ r- oa) have an average thickness of W 0,038 mm and individual thickness of W 0,032 mm when tested in$ s4 g( `- B: J8 \. Z7 q
accordance with 5.10 (determination of thickness of plastic film and sheeting), or) J, W3 l: W( x: p9 K& ]) N/ [
b) have perforations with well-defined holes (where material has been removed) of 1 % minimum area on4 r# ]; J3 J/ Z0 I7 _6 j9 O
any maximum area of dimensions 30 mm × 30 mm. See Figure 9.
) E/ I1 B) l& R, a5 f& {2 oNOTE The requirement in 4.10 b) can be fulfilled by having 3,4 mm diameter holes in a square grid pattern where the# S. ]6 D, l" B. Y
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+ L: p! d4 \. {- ]! N" `
than 9 mm2 which is more than 1 % of 900 mm2 (30 mm × 30 mm).
; H: T0 D, [7 l# qFor plastic balloons, the thickness requirement in a) applies to double layers of plastic sheeting (i.e. the
1 z* b, ~3 w$ }thickness is measured without inflating or destroying the balloon).
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2 t3 d# u0 r) W. F9 P5 K8 v谢谢大家！ |
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发表于 2011-11-17 15:00
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