標準號：BS EN 1186-15-2002
中文標準名稱：與食品接觸的材料和制品.塑料.快速萃取異辛烷和或95%酒精的脂肪食品塑料析出物滲移量的交替試驗方法
英文標準名稱：Materials and articles in contact with foodstuffs - Plastics - Alternative test methods to migration into fatty food simulants by rapid extraction into iso-octane and/or 95 % ethanol
標準類型：X08;C53
發布日期：2002/10/14 12:00:00
實施日期：2002/10/14 12:00:00
中國標準分類號：X08;C53
國際標準分類號：67.250
適用范圍：This European Standard specifies two alternative test methods, in the sense of an extraction test with a 'moresevere' test character, for the assessment of the overall migration into fatty food simulants.Method A is based on the determination of the extraction of migrateable substances from plastics which areintended to come into contact with foodstuffs, by total immersion in non-polar, iso-octane, and/or polar, ethanol,solvents depending on the polarity of the packaging material. According to results obtained by this method (see[1], [2], [3], [4], [5]) and taking physio-chemical considerations into account, the obtained extraction efficiency has,generally, been found to be equivalent to or higher than overall migration results obtained under the test conditions,10 days at 40 °C, 2 h at 70 °C, 1 h at 100 °C, 30 min at 121 °C and 30 min at 130 °C.To ensure as complete as possible extraction of the potential migrants, a strong interaction, e.g. swelling, of thesample by the extraction solvent is necessary. For this purpose, iso-octane is used as an extraction solvent forplastics materials and articles containing non polar food contact layers, such as polyolefins. For test samples madefrom polar food contact plastics such as polyamide and polyethylene terephthalate, 95 % (v/v) aqueous ethanol isused. For polystyrenes, plasticized polyvinyl chloride and other polymers where the identification or polarity of thepolymer is not clear, two parallel extraction tests should be conducted using both of the proposed extractionsolvents and taking the higher value obtained as the relevant result.NOTE 1 In case of multilayer structures such as plastics laminates and co-extruded plastics, the nature of the food contactlayer determines the selection of the extraction solvent(s).This test method should only be applied to flexible packagings which are less than 300 μm in thickness. When theresult does not exceed the allowed overall migration limit then the material can be considered to be in compliancewith EC regulations. If the test result exceeds the allowed overall migration limit the following options may beapplied chronologically with respect to further migration testing:1) single-sided extraction test using a cell, if technically feasible (see clause 4 Method B of this standard);2) conventional migration test using olive oil or other fatty food simulants;NOTE 2 The overall migration limit is specified in Commission Directive 90/128/EEC [7] and the conditions of test in CouncilDirective 82/711/EEC [8] and its subsequent amendments, [9], [10].Method B is applicable in those cases where the total immersion test, EN 1186-15 Method A, yields total extractionvalues that exceed the overall migration or may be technically unsuitable, i.e. in the case of multilayer structures,such as plastics laminates and co-extruded films. This test method should primarily only be applied to flexiblepackagings with a physical barrier layer (for instance of aluminium or other material to prevent penetrative loss ofextraction solvent) and which have a thinner food contact layer than 300 μm. If the result does not exceed theallowed overall migration limit then the material can be considered to be in compliance with EC regulations. If thetest result exceeds the allowed overall migration limit then the following option may be applied with respect tofurther migration testing:- conventional migration test using olive oil or other fatty food simulants.NOTE 3 Methods A and B are not applicable to test materials intended for applications over 130 °C.NOTE 4 Test materials intended for applications over 70 °C should be checked for their physical suitability at the intendedtime and temperature of use.