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引用第9楼03411007于2011-11-17 14:59发表的 :$ c! S9 p" B7 d$ `" ~ M7 Q
ASTM F963-2008 CL4.12
9 l0 a. t8 `7 X继续探讨：
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& g7 E; U/ d& i. T5 a. `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0 G* I* J* t. G- X" i+ w
$ o* ^# ^; O2 C5 I1 Q3 _ISO8124.1 - 2009 MOD 描述得比较详细：. }, Q- \2 x+ H! b; }9 v
Flexible plastic film or flexible plastic bags without backing and with a minor dimension of > 100 mm and used* v# i4 G% Q0 y. ?: f2 n
in toys shall either- M V/ @5 d ]/ T! }' L) b
a) have an average thickness of W 0,038 mm and individual thickness of W 0,032 mm when tested in
; F8 P6 c3 [& u6 _accordance with 5.10 (determination of thickness of plastic film and sheeting), or
2 \7 {( m* W7 G# O( i/ c1 }9 lb) have perforations with well-defined holes (where material has been removed) of 1 % minimum area on
7 g2 Z2 e1 x% b# Xany maximum area of dimensions 30 mm × 30 mm. See Figure 9.4 g- A* j- L: [$ Z! b3 E% c
NOTE The requirement in 4.10 b) can be fulfilled by having 3,4 mm diameter holes in a square grid pattern where the4 t, J) |$ S, Y7 d7 S. C
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
5 v# K5 R+ O8 Q2 J- m, }* Sthan 9 mm2 which is more than 1 % of 900 mm2 (30 mm × 30 mm).
, d* t5 |' R* \8 j& |For plastic balloons, the thickness requirement in a) applies to double layers of plastic sheeting (i.e. the
0 o. D6 V/ e7 X$ l6 A9 k$ F6 ithickness is measured without inflating or destroying the balloon).& d4 ~6 v: o/ d8 w' i% c
3 k4 d+ T- a- M5 u
谢谢大家！ |
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发表于 2011-11-17 15:00
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