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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 :
. _$ W; W8 o5 t7 ]" J' oASTM F963-2008 CL4.12
继续探讨：1 h: E+ z& d9 R- R1 m; R7 I. k
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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：5 C2 Z: Y) M2 ]
Flexible plastic film or flexible plastic bags without backing and with a minor dimension of > 100 mm and used% r" Z+ A5 ?& T l+ l
in toys shall either
% b( ^( B+ G0 F, sa) have an average thickness of W 0,038 mm and individual thickness of W 0,032 mm when tested in
5 G- s( O V2 {4 t: y" z3 Paccordance with 5.10 (determination of thickness of plastic film and sheeting), or) e; [7 L1 B. D3 [! ^9 X
b) have perforations with well-defined holes (where material has been removed) of 1 % minimum area on5 f; K/ c+ ~4 c% `. m$ R! g
any maximum area of dimensions 30 mm × 30 mm. See Figure 9.; {/ P: f+ J0 g Y* f4 J8 R
NOTE The requirement in 4.10 b) can be fulfilled by having 3,4 mm diameter holes in a square grid pattern where the
3 {" ~: v8 l+ J/ v# ~& C* _, t I" |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/ ?# h& K1 ^, a+ H, C
than 9 mm2 which is more than 1 % of 900 mm2 (30 mm × 30 mm).0 W! P* X, C1 G8 x6 Y
For plastic balloons, the thickness requirement in a) applies to double layers of plastic sheeting (i.e. the
! g1 T' ^# k }0 L& Othickness is measured without inflating or destroying the balloon).
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6 z3 v0 ^& J/ s. \4 D' f谢谢大家！ |
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