|
|
引用第9楼03411007于2011-11-17 14:59发表的 :
1 E3 c" l/ a! i7 BASTM F963-2008 CL4.12
7 ~. w+ _. n8 X `继续探讨：
! s4 o8 n; \+ R7 g0 ~4 g B& F4 H
; X; b* ^, a i" N3 ?; aASTM 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
$ Y+ {( |1 [3 v6 L
% F7 C {8 L w' wISO8124.1 - 2009 MOD 描述得比较详细：
& y7 X8 L# E. a4 cFlexible plastic film or flexible plastic bags without backing and with a minor dimension of > 100 mm and used
% F0 `% c9 o3 ?5 {* Gin toys shall either
& P* l! Y, }/ w0 t4 Na) have an average thickness of W 0,038 mm and individual thickness of W 0,032 mm when tested in& Z4 u/ W1 E9 L }
accordance with 5.10 (determination of thickness of plastic film and sheeting), or( F5 S! [+ ~" ]( w
b) have perforations with well-defined holes (where material has been removed) of 1 % minimum area on
& k# L8 k$ l! d" t0 p/ Zany maximum area of dimensions 30 mm × 30 mm. See Figure 9.1 A) A, s' ?' r7 s; B" h7 ^
NOTE The requirement in 4.10 b) can be fulfilled by having 3,4 mm diameter holes in a square grid pattern where the) [7 e. l9 f3 ]. R; k
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
4 \ q, K& q6 u! } L+ W6 g% Kthan 9 mm2 which is more than 1 % of 900 mm2 (30 mm × 30 mm).
3 s8 \' M6 \& h7 K( ]' uFor plastic balloons, the thickness requirement in a) applies to double layers of plastic sheeting (i.e. the- @% w n |+ g
thickness is measured without inflating or destroying the balloon).- E0 {% u/ ?! O- f9 k
' q- ?! O5 _2 n* h) g; \
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
楼主
----------------------