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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 :
: B9 Q" h0 O- E0 F `5 lASTM F963-2008 CL4.12
继续探讨：, v5 j4 ^. j! ~
l% ]# w" ]/ D3 V; W4 S% yASTM 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
' C) p& m3 G! ?4 F5 b0 B
3 A, Y, K* O7 j4 I" V( f( hISO8124.1 - 2009 MOD 描述得比较详细：
y5 K- n7 A9 }Flexible plastic film or flexible plastic bags without backing and with a minor dimension of > 100 mm and used$ f1 C7 _! g7 B) G) J% Y7 {+ }$ v
in toys shall either- u6 z* L: j& T; c) @8 j% g
a) have an average thickness of W 0,038 mm and individual thickness of W 0,032 mm when tested in/ Q$ D0 q9 K6 C; h. ?5 }' I
accordance with 5.10 (determination of thickness of plastic film and sheeting), or3 F1 A4 F! N9 c f. r" |. F
b) have perforations with well-defined holes (where material has been removed) of 1 % minimum area on. V X1 ^' I/ Q! R+ ~2 W+ ~2 G) A
any maximum area of dimensions 30 mm × 30 mm. See Figure 9.
6 N( h3 D E4 Z% ]9 V/ wNOTE The requirement in 4.10 b) can be fulfilled by having 3,4 mm diameter holes in a square grid pattern where the
; K: _ x* u% r3 I; m0 D7 g: x4 `1 gvertical 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
% V' b2 a8 ]! r: i6 v1 M8 S2 r, Ethan 9 mm2 which is more than 1 % of 900 mm2 (30 mm × 30 mm).
' X7 r; H- l0 t( jFor plastic balloons, the thickness requirement in a) applies to double layers of plastic sheeting (i.e. the6 H: [6 t: q" E
thickness is measured without inflating or destroying the balloon).
; f% a, z2 |" g g2 `, }( |% z& J9 M- f1 G* \( M7 Q& }9 @' R
谢谢大家！ |
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