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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 :% R. l5 v; g' i' l9 ?- n
ASTM F963-2008 CL4.12
2 c; Z6 f7 ]% n/ L( M继续探讨：% f% E" e. ]1 \! d# H/ b
B9 V/ ?1 C$ v$ F# E3 eASTM 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# l1 \. D3 v) y; [$ `. `: y
6 M1 p1 n6 f" |. M& F3 }+ LISO8124.1 - 2009 MOD 描述得比较详细：2 @* X6 }; K$ s- O2 W$ N, ~
Flexible plastic film or flexible plastic bags without backing and with a minor dimension of > 100 mm and used, W) |: b/ d9 D: Q7 E9 E
in toys shall either
0 J+ L# _. H4 W5 @( pa) have an average thickness of W 0,038 mm and individual thickness of W 0,032 mm when tested in
, {* a5 c# u* M7 [3 ^ ^accordance with 5.10 (determination of thickness of plastic film and sheeting), or" H; i) K9 J$ n2 z& v' \' M; G
b) have perforations with well-defined holes (where material has been removed) of 1 % minimum area on3 ]+ S% a9 `$ f9 p5 e
any maximum area of dimensions 30 mm × 30 mm. See Figure 9.2 Z* N$ S4 j. W* a
NOTE The requirement in 4.10 b) can be fulfilled by having 3,4 mm diameter holes in a square grid pattern where the
% n! w; a: o! f6 evertical and horizontal distance between the centre of two holes is 22,9 mm or less (the area of a 3,4 mm hole is larger8 |; L2 U4 A& P
than 9 mm2 which is more than 1 % of 900 mm2 (30 mm × 30 mm).
" \# V o" s: r) V- ?/ X9 s& y" OFor plastic balloons, the thickness requirement in a) applies to double layers of plastic sheeting (i.e. the5 j+ h" w9 K/ ~9 x1 \ n4 K
thickness is measured without inflating or destroying the balloon).
" @6 y4 m1 V4 m a
- V, G1 T3 m% Q/ }5 m! V: k4 }4 A谢谢大家！ |
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