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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 :
; z- s% t& B/ q/ [- ~ASTM 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4 @- Q! v7 J# u, Y. W( S% K5 d
5 o V- L7 x) I: F {ISO8124.1 - 2009 MOD 描述得比较详细：7 ?" ?0 C8 u: B' q5 U+ p- H0 ~7 [
Flexible plastic film or flexible plastic bags without backing and with a minor dimension of > 100 mm and used
9 I0 D/ x' N2 c6 ^& M4 Tin toys shall either7 S8 T1 W9 W e" F- v
a) have an average thickness of W 0,038 mm and individual thickness of W 0,032 mm when tested in
4 Z; N4 A8 A! e) qaccordance with 5.10 (determination of thickness of plastic film and sheeting), or# m: J6 K/ s! T+ I* e' z# m. h
b) have perforations with well-defined holes (where material has been removed) of 1 % minimum area on
0 B6 Z, H* n5 M5 D. Yany maximum area of dimensions 30 mm × 30 mm. See Figure 9.' h! ?- N9 k- N1 L3 E5 Y' ]9 Q
NOTE The requirement in 4.10 b) can be fulfilled by having 3,4 mm diameter holes in a square grid pattern where the
* V8 G% p- a1 _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- |- ~- w1 P8 y# \" @; M% T
than 9 mm2 which is more than 1 % of 900 mm2 (30 mm × 30 mm).
3 m/ y8 |1 e( i m7 C$ q2 @- rFor plastic balloons, the thickness requirement in a) applies to double layers of plastic sheeting (i.e. the
" U, l5 t1 ^/ K: J" D9 \thickness is measured without inflating or destroying the balloon)./ P- x, Y0 Q' ?
+ Z$ K3 _* q! ^( ^谢谢大家！ |
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发表于 2011-11-17 15:00
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