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引用第9楼03411007于2011-11-17 14:59发表的 :+ Z& P3 |* O) S2 a/ w# T
ASTM F963-2008 CL4.12
继续探讨：8 f# g, _) C" r/ X
5 P- {' N7 d& q; _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
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ISO8124.1 - 2009 MOD 描述得比较详细：8 C/ _0 r& o$ r) {: n# }! j
Flexible plastic film or flexible plastic bags without backing and with a minor dimension of > 100 mm and used
# ~, }1 y5 y/ \2 fin toys shall either
0 S4 s) |6 o1 e- M% La) have an average thickness of W 0,038 mm and individual thickness of W 0,032 mm when tested in0 Y0 n( |$ i) k
accordance with 5.10 (determination of thickness of plastic film and sheeting), or
8 |+ a) ~7 ?) t+ ?b) have perforations with well-defined holes (where material has been removed) of 1 % minimum area on* x M1 m9 I) m/ z
any maximum area of dimensions 30 mm × 30 mm. See Figure 9.* H( a0 @$ H- `9 k7 E" W7 V$ L$ Z
NOTE The requirement in 4.10 b) can be fulfilled by having 3,4 mm diameter holes in a square grid pattern where the) l/ m! @; R4 t: a$ F1 y& B9 A5 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 larger0 p$ ]4 d4 a3 Y/ k G' j, e
than 9 mm2 which is more than 1 % of 900 mm2 (30 mm × 30 mm).' \, _- x0 r% i
For plastic balloons, the thickness requirement in a) applies to double layers of plastic sheeting (i.e. the
/ d3 \& U" }; c. W. o& k$ _thickness is measured without inflating or destroying the balloon).
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3 l* d% B( h2 U% }! U, k* O3 s7 z1 z谢谢大家！ |
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发表于 2011-11-17 15:00
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