|
|
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 :
* O& k% i* r9 W1 ?) W6 mASTM F963-2008 CL4.12
继续探讨：6 H1 v% C; A" w* O( A5 \
# z0 V2 e- k5 @# S& g+ S8 I2 J* z5 J2 G
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 e; G) j: @% T E% Y7 B7 M: N1 \' m
; \' Y% h* u% a- }8 f" S, Y
ISO8124.1 - 2009 MOD 描述得比较详细：
1 H: g' r; y; s' S8 Q* o, z) LFlexible plastic film or flexible plastic bags without backing and with a minor dimension of > 100 mm and used5 p B& M, H$ y1 v7 g; T; u8 O- y$ ?
in toys shall either
0 A& B, b& N# M1 w, I# n/ K- X2 da) have an average thickness of W 0,038 mm and individual thickness of W 0,032 mm when tested in
, A$ C) G0 N; _0 l& aaccordance with 5.10 (determination of thickness of plastic film and sheeting), or
. H. J( i. l; J8 p9 Z9 e, s2 ub) have perforations with well-defined holes (where material has been removed) of 1 % minimum area on* a& N8 G3 |# l! k
any maximum area of dimensions 30 mm × 30 mm. See Figure 9./ P6 {" }3 R( c" ^
NOTE The requirement in 4.10 b) can be fulfilled by having 3,4 mm diameter holes in a square grid pattern where the
% ?0 v4 M! [; }& t6 Y; o, C* 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
6 ~3 t& E3 z Z( ethan 9 mm2 which is more than 1 % of 900 mm2 (30 mm × 30 mm). E7 _" H, W, x- f! b
For plastic balloons, the thickness requirement in a) applies to double layers of plastic sheeting (i.e. the* M+ }8 v& a1 T4 B- t
thickness is measured without inflating or destroying the balloon).
, N/ Q" W1 R# S: w5 N8 r# `8 h) g" Q
谢谢大家！ |
|
/2 
|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
----------------------