主题：【求助】求助塑料餐盒做EN1186全迁移条件的选择

又仔细看了下标准
7.1.1 General
The migration tests are to be carried out, selecting from the times and temperatures specified in Table 3 those
which correspond to the worst foreseeable conditions of contact for the plastics material or article and to any
labelling information on maximum temperature for use. Therefore, if the final plastics material or article is intended
for a food contact application covered by a combination of two or more times and temperatures taken from the
table, the migration test shall be carried out subjecting the test specimen successively to all the applicable worst
foreseeable conditions appropriate to the sample, using the same portion of food simulant.


EN1186-1-2002中第7.1部分提到了如果接触材料覆盖了两种或以上的温度和时间段，则应使用等量的模拟物，将试样依次在所有这些条件下进行试验。
对以上这段有几点理解不了
1.两个不同的试样是用同一个样品还是不同的样品？按照标准的理解应该是用同一个试样的可能性比较大，因为标准中用了successively这个词
2.结果怎么计算？是两种条件分开算还是两种条件的结果相加又或是怎么样？
3.报告怎么出，也就是报告中的试验条件如何写？是两种条件都写上去么？

请各位老师不吝指教

既然是两种分开，那应该也是体现两种条件了。

原文由 AK-47(冲)(scott-vip) 发表:
既然是两种分开，那应该也是体现两种条件了。

那数据时两个条件加起来么？

用同一个样品，条件组合，报告就按照测试的条件写就好了。

按照法规10/2011 EC

温度可以选择40℃/10d

L 12/86 EN Official Journal of theEuropean Union 15.1.2011

If it is found that carrying out the tests under the contact conditions specified in Table 3 causes physical or other changes in the test specimen which do not occur under worst foreseeable conditions of use of the material or article under examination, the migration tests shall be carried out under the worst foreseeable conditions of use in which these physical or other changes do not take place.
Table 3
Standardised testing conditions
Column 1
Column 2
Column 3
Test number
Contact time in days [d] or hours [h] at Contact temperature in [¡ãC]
Intended food contact conditions
OM1
10 d at 20 ¡ãC
Any food contact at frozen and refrigerated conditions.
OM2
10 d at 40 ¡ãC
Any long term storage at room temperature or below, including heating up to 70 ¡ãC for up to 2 hours, or heating up to 100 ¡ãC for up to 15 minutes.OM3
2 h at 70 ¡ãC
Any contact conditions that include heating up to 70 ¡ãC for up to 2 hours, or up to 100 ¡ãC for up to 15 minutes, which are not followed by long term room or refrigerated temperature storage.
OM4
1 h at 100 ¡ãC
High temperature applications for all food simulants at temperature up to 100 ¡ãC.
OM5
2 h at 100 ¡ãC or at reflux or alternatively 1 h at 121 ¡ãC
High temperature applications up to 121 ¡ãC.
OM6
4 h at 100 ¡ãC or at reflux
Any food contact conditions with food simulants A, B or C, at temperature exceeding 40 ¡ãC.
OM7
2 h at 175 ¡ãC
High temperature applications with fatty foods exceeding the conditions of OM5.
Test OM 7 covers also food contact conditions described for OM1, OM2, OM3, OM4, OM5. It represents the worst case conditions for fatty food simulants in contact with non-polyolefins. In case it is technically not feasible to perform OM 7 with food simulant D2 the test can be replaced as set out in paragraph 3.2.
Test OM 6 covers also food contact conditions described for OM1, OM2, OM3, OM4 and OM5. It represents worst case conditions for food simulants A, B and C in contact with non-polyolefins.
Test OM 5 covers also food contact conditions described for OM1, OM2, OM3, OM4. It represents the worst case conditions for all food simulants in contact with polyolefins.
Test OM 2 covers also food contact conditions described for OM1 and OM3.

中的OM2就适用你这种情况


           

原文由 河浪(nbhelang) 发表:
又仔细看了下标准
7.1.1 General
The migration tests are to be carried out, selecting from the times and temperatures specified in Table 3 those
which correspond to the worst foreseeable conditions of contact for the plastics material or article and to any
labelling information on maximum temperature for use. Therefore, if the final plastics material or article is intended
for a food contact application covered by a combination of two or more times and temperatures taken from the
table, the migration test shall be carried out subjecting the test specimen successively to all the applicable worst
foreseeable conditions appropriate to the sample, using the same portion of food simulant.

EN1186-1-2002中第7.1部分提到了如果接触材料覆盖了两种或以上的温度和时间段，则应使用等量的模拟物，将试样依次在所有这些条件下进行试验。
对以上这段有几点理解不了
1.两个不同的试样是用同一个样品还是不同的样品？按照标准的理解应该是用同一个试样的可能性比较大，因为标准中用了successively这个词
2.结果怎么计算？是两种条件分开算还是两种条件的结果相加又或是怎么样？
3.报告怎么出，也就是报告中的试验条件如何写？是两种条件都写上去么？

请各位老师不吝指教

successively是连续的意思  比如说放置在100度 2小时  后接着放置40度 10天
结果就按最后蒸干的质量去计算
报告可以按实际做的条件出 100 degree for  2 hours  followed  by  40 degree  for  10days。

EN1186  的方法只是推荐使用  法规是2002/72 EC

新法规是10/2011 EC  2011年5月已部分实行。