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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 :( }6 G: F# k5 m
ASTM F963-2008 CL4.12
9 L) c4 i! P# s( ^+ o0 ~4 L% R* L1 i; t继续探讨：
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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* a0 C+ I# ?9 h6 v9 s! J" x
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ISO8124.1 - 2009 MOD 描述得比较详细：8 d! x+ n5 ?; S H
Flexible plastic film or flexible plastic bags without backing and with a minor dimension of > 100 mm and used7 C3 v( C0 v; D$ E2 _' c* }- a- k
in toys shall either* h, F' y% c( ?0 h) k D# J6 W/ p
a) have an average thickness of W 0,038 mm and individual thickness of W 0,032 mm when tested in
% q1 W, h L a; k) raccordance with 5.10 (determination of thickness of plastic film and sheeting), or
' g" ~6 ]& I" E) X4 ib) have perforations with well-defined holes (where material has been removed) of 1 % minimum area on& H8 }7 _1 _4 J; C* C1 b
any maximum area of dimensions 30 mm × 30 mm. See Figure 9.' M* Q; Z) X$ v8 Q
NOTE The requirement in 4.10 b) can be fulfilled by having 3,4 mm diameter holes in a square grid pattern where the6 f {5 \. ]' s& |3 h
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
7 m4 p% h5 e" `$ B& Vthan 9 mm2 which is more than 1 % of 900 mm2 (30 mm × 30 mm).9 E, r. F: ^8 W [! z4 e
For plastic balloons, the thickness requirement in a) applies to double layers of plastic sheeting (i.e. the! N, \& a% T: s; x& }* w
thickness is measured without inflating or destroying the balloon).& V3 y( U' ~! ?- Q" _
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谢谢大家！ |
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