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引用第9楼03411007于2011-11-17 14:59发表的 :0 L- d7 T7 H3 f- N3 M& _8 ^# _$ {
ASTM F963-2008 CL4.12
* C* t' U; `% ^% P继续探讨：. y- Q0 w, [2 k( Y, `
6 S) `. Z- Q& ^- ]" R) N {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
8 i" R& q3 B* h# Y; ^; V. J- O* |1 F, g
ISO8124.1 - 2009 MOD 描述得比较详细：
5 M9 s" q8 n* _6 b- l! XFlexible plastic film or flexible plastic bags without backing and with a minor dimension of > 100 mm and used( q0 w# R/ v+ R. Z/ V
in toys shall either' S! p# E' A# o; ~, ]
a) have an average thickness of W 0,038 mm and individual thickness of W 0,032 mm when tested in1 S6 [1 R) l0 |* X7 n7 g
accordance with 5.10 (determination of thickness of plastic film and sheeting), or: Z( z! o: b1 L( G, Z
b) have perforations with well-defined holes (where material has been removed) of 1 % minimum area on
. _1 b' {4 i# n4 `6 c, f3 |any maximum area of dimensions 30 mm × 30 mm. See Figure 9.. K" @. h, r# f& H q6 q8 ?: m% M' L2 l
NOTE The requirement in 4.10 b) can be fulfilled by having 3,4 mm diameter holes in a square grid pattern where the
2 i2 V: J$ g$ ~/ e4 Cvertical and horizontal distance between the centre of two holes is 22,9 mm or less (the area of a 3,4 mm hole is larger7 q3 H% L6 k4 H4 Z0 v. M
than 9 mm2 which is more than 1 % of 900 mm2 (30 mm × 30 mm).
, K; D! Q J5 }4 B5 \For plastic balloons, the thickness requirement in a) applies to double layers of plastic sheeting (i.e. the
2 \4 e/ q9 A8 F: Q, Bthickness is measured without inflating or destroying the balloon). F0 r5 d0 U% S9 {$ @
8 @4 ~6 ]6 T2 p
谢谢大家！ |
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发表于 2011-11-17 13:06
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