|
|
楼主 |
发表于 2011-11-17 18:53
|
显示全部楼层
引用第9楼03411007于2011-11-17 14:59发表的 :
+ f5 G; F9 t) |ASTM F963-2008 CL4.12
$ S/ d7 F2 z# f* t7 Z, A5 R% g- L继续探讨：
; a! v, o2 K: ]. o( Q: T
) e# A' y, M/ w- [+ d( KASTM 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9 d8 z: l8 v# Q8 r" M$ P
% s7 Q& Q+ k! ]. ^) }3 i$ A" wISO8124.1 - 2009 MOD 描述得比较详细：/ O* ?! ?& X6 V6 B; V7 Z4 U; f
Flexible plastic film or flexible plastic bags without backing and with a minor dimension of > 100 mm and used. U, C. n& r# ?( I' c
in toys shall either4 W' e+ X0 I3 l7 w( s9 N0 L
a) have an average thickness of W 0,038 mm and individual thickness of W 0,032 mm when tested in
# Z; U6 Z/ S% m( Gaccordance with 5.10 (determination of thickness of plastic film and sheeting), or
/ ~+ r; W& A }3 `- ab) have perforations with well-defined holes (where material has been removed) of 1 % minimum area on: S+ q0 J+ V. [- E% y
any maximum area of dimensions 30 mm × 30 mm. See Figure 9.
% w$ U8 x/ B8 d% K7 a3 Y" W$ N( L' WNOTE The requirement in 4.10 b) can be fulfilled by having 3,4 mm diameter holes in a square grid pattern where the
& D4 ?5 M3 @6 u$ R; A3 e2 Y' X4 J6 Mvertical 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" I. p$ I9 M+ }
than 9 mm2 which is more than 1 % of 900 mm2 (30 mm × 30 mm).
7 t4 O6 N2 @$ j8 e2 B! v eFor plastic balloons, the thickness requirement in a) applies to double layers of plastic sheeting (i.e. the7 g. m0 j* d4 |! P$ G
thickness is measured without inflating or destroying the balloon).. C9 l0 j5 p) A" H0 P. V0 z' X
0 j; M. |0 v( o: U谢谢大家！ |
|
/1 
|关于安规|小黑屋|安规QQ群|Archiver|手机版|安规网
( 粤ICP13023453-10 )
窥视卡
雷达卡
发表于 2011-11-17 15:00
显身卡
----------------------