|
|
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 :& L# A: |9 ]/ ^
ASTM F963-2008 CL4.12
1 ]' i, J3 N/ |- p! x继续探讨：# R, X. o( c$ b- Q7 a
6 s1 b$ R& D: f& B; `% F
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0 J8 R" Z" w) }8 l2 c
3 L/ E, }& {; P- _% ?ISO8124.1 - 2009 MOD 描述得比较详细：
' N9 o, H/ c( m( O0 D9 s* W. b4 ]Flexible plastic film or flexible plastic bags without backing and with a minor dimension of > 100 mm and used5 {4 g& [: P1 L/ h" j
in toys shall either. i' P* p' z, L2 j" K f
a) have an average thickness of W 0,038 mm and individual thickness of W 0,032 mm when tested in5 {( C# Z. ^5 R' S
accordance with 5.10 (determination of thickness of plastic film and sheeting), or$ e5 x$ Y# Q9 F9 x8 q2 ?
b) have perforations with well-defined holes (where material has been removed) of 1 % minimum area on
: r* ?; B" W* |& tany maximum area of dimensions 30 mm × 30 mm. See Figure 9.
$ B: [$ y0 w& V: J4 |( UNOTE The requirement in 4.10 b) can be fulfilled by having 3,4 mm diameter holes in a square grid pattern where the
- P; {) a6 l2 p3 M7 [! s ~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
, X, I# z" a9 y4 gthan 9 mm2 which is more than 1 % of 900 mm2 (30 mm × 30 mm). k# V5 R; @0 r) a
For plastic balloons, the thickness requirement in a) applies to double layers of plastic sheeting (i.e. the1 l5 n6 m5 } c" m$ u0 f" x
thickness is measured without inflating or destroying the balloon).
3 F+ C1 g% t' a0 N: v1 u$ k
7 g9 V9 F0 f9 a3 w+ V2 z2 g& d9 l谢谢大家！ |
|
|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
----------------------