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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 :3 f0 I& Q$ P7 |6 C: c
ASTM F963-2008 CL4.12
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" |) p0 y; e) I o8 e; U2 _
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ISO8124.1 - 2009 MOD 描述得比较详细：6 I$ {5 e' o# V- }
Flexible plastic film or flexible plastic bags without backing and with a minor dimension of > 100 mm and used
+ N& v) u. D. K2 din toys shall either
" S) t4 k# P G+ v! j8 L; r5 A+ Ma) have an average thickness of W 0,038 mm and individual thickness of W 0,032 mm when tested in
2 ? Y; x: w8 a# baccordance with 5.10 (determination of thickness of plastic film and sheeting), or; S3 ^! I! X/ F9 c
b) have perforations with well-defined holes (where material has been removed) of 1 % minimum area on
/ K' d# ^2 k. r- _0 k/ tany maximum area of dimensions 30 mm × 30 mm. See Figure 9.
5 K* e* A) d+ }) ~ c! m+ Q& dNOTE The requirement in 4.10 b) can be fulfilled by having 3,4 mm diameter holes in a square grid pattern where the5 k6 W4 x4 z5 o+ y, M
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- b$ I- z, h' _# V2 ]
than 9 mm2 which is more than 1 % of 900 mm2 (30 mm × 30 mm).
& R: i' V) v6 J( FFor plastic balloons, the thickness requirement in a) applies to double layers of plastic sheeting (i.e. the7 Q& k; m0 J+ |" L: \" H) g& m
thickness is measured without inflating or destroying the balloon).- m3 ]' k# K6 a+ n
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