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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 :
' E4 k$ `0 h s2 P; P/ xASTM F963-2008 CL4.12
: K V& t+ Y- d Z$ F继续探讨：( w( T+ h1 v+ e7 d
9 p6 Q' c' R5 hASTM 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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8 A0 `* B3 r: `& r1 B: I( g, k4 RISO8124.1 - 2009 MOD 描述得比较详细：# f: u' S4 i7 y! \. `& x6 J
Flexible plastic film or flexible plastic bags without backing and with a minor dimension of > 100 mm and used
: ?5 U& L: x+ e8 V: z. P# B0 K4 kin toys shall either
4 S' {7 U9 B8 u' P Ma) have an average thickness of W 0,038 mm and individual thickness of W 0,032 mm when tested in
7 {6 h1 o% c, d6 O) I, o, maccordance with 5.10 (determination of thickness of plastic film and sheeting), or
: S* O; C" t. [& N* Q V# [& B% Lb) have perforations with well-defined holes (where material has been removed) of 1 % minimum area on+ y7 f4 X8 L6 ~; g% T! w# l
any maximum area of dimensions 30 mm × 30 mm. See Figure 9.2 o; K: L2 w7 g0 ]+ O
NOTE The requirement in 4.10 b) can be fulfilled by having 3,4 mm diameter holes in a square grid pattern where the% f% N9 o, x, l, w- n) g
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
7 C* Y2 W7 \' G$ ythan 9 mm2 which is more than 1 % of 900 mm2 (30 mm × 30 mm).0 m* S, g; `! }# H4 S
For plastic balloons, the thickness requirement in a) applies to double layers of plastic sheeting (i.e. the
5 M) f3 _1 }' Q5 U# |9 Z$ b$ C: \thickness is measured without inflating or destroying the balloon).
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