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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 :. }/ O; F& R" s" i" r, {
ASTM F963-2008 CL4.12
继续探讨：3 ?& l! ~1 m# e: C! R
" Z* h4 P* Z2 v* p* BASTM 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：& @' h6 S3 ]: s9 q5 m2 }/ \
Flexible plastic film or flexible plastic bags without backing and with a minor dimension of > 100 mm and used
2 K; e' @. u( w* y$ u3 R% i+ N" @in toys shall either! X* p0 D; d% j# a; a9 f& t6 L" j
a) have an average thickness of W 0,038 mm and individual thickness of W 0,032 mm when tested in. k ^3 o5 Y' d2 |. T
accordance with 5.10 (determination of thickness of plastic film and sheeting), or/ h+ _: N7 T, a
b) have perforations with well-defined holes (where material has been removed) of 1 % minimum area on \* u% U( E: R( \1 w
any maximum area of dimensions 30 mm × 30 mm. See Figure 9.
. @, y# e; B, W' [' |NOTE The requirement in 4.10 b) can be fulfilled by having 3,4 mm diameter holes in a square grid pattern where the
( y& S+ S/ v- A6 p' yvertical 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& E$ h3 [$ [, t( y. A
than 9 mm2 which is more than 1 % of 900 mm2 (30 mm × 30 mm)., y$ ], A8 _* Z4 n' G6 m
For plastic balloons, the thickness requirement in a) applies to double layers of plastic sheeting (i.e. the& q# `& G9 V2 Y3 {4 F6 _$ H
thickness is measured without inflating or destroying the balloon).
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谢谢大家！ |
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