基本信息
| 标准名称： | 电阻炉用耐火制品 粘土质隔热耐火制品 |
| 中标分类： |
电工 >>
电气设备与器具 >>
工业电热设备 |
| 替代情况： | JB 3649.3-84 |
| 发布部门： | 中华人民共和国机械工业部 |
| 发布日期： | 1994-12-09 |
| 实施日期： | 1995-06-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 1900-01-01 |
| 提出单位： | 全国工业电热设备标准化技术委员会 |
| 归口单位： | 机械工业部西安电炉研究所 |
| 起草单位： | 西安电炉研究所、上海电炉耐火材料厂、宜兴川埠耐火电瓷二厂、东台市耐火器材厂 |
| 起草人： | 曹文秀、朱素媛、王矩森、邵西彬、盈生才 |
| 出版社： | 机械工业出版社 |
| 出版日期： | 1995-06-01 |
| 页数： | 6 |
适用范围
本标准规定了电阻炉电用粘土质隔热耐火制品的产品分类、技术要求、试验方法、检验规则、标志和包装要求等。
本标准适用于工作温度分别低于各品种的荷重软化开始温度的制品。
前言
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目录
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引用标准
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所属分类： 电工 电气设备与器具 工业电热设备
【英文标准名称】:Materialsandarticlesincontactwithfoodstuffs-Plastics-Alternativetestmethodstomigrationintofattyfoodsimulantsbyrapidextractionintoiso-octaneand/or95%ethanol
【原文标准名称】:与食品接触的材料和制品.塑料.快速萃取异辛烷和或95%酒精的脂肪食品塑料析出物渗移量的交替试验方法
【标准号】:BSEN1186-15-2002
【标准状态】:现行
【国别】:英国
【发布日期】:2002-10-14
【实施或试行日期】:2002-10-14
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:物品;触点;酒精;萃取;脂肪;食品检验;食品包装;食品;食品料;浸渍;试验研究;异辛烷;材料;接触食品的材料;材料规范;材料测试;迁移;抗渗移性;塑料;试验媒体;试件;试验
【英文主题词】:Articles;Contact;Ethanol;Extraction;Fats;Foodinspection;Foodpackages;Foodproducts;Foodstuff;Immersion;Investigations;Isooctane;Materials;Materialsincontactwithfood;Materialsspecification;Materialstesting;Migration;Migrationresistance;Plastics;Testmedia;Testpieces;Testing
【摘要】:ThisEuropeanStandardspecifiestwoalternativetestmethods,inthesenseofanextractiontestwitha'moresevere'testcharacter,fortheassessmentoftheoverallmigrationintofattyfoodsimulants.MethodAisbasedonthedeterminationoftheextractionofmigrateablesubstancesfromplasticswhichareintendedtocomeintocontactwithfoodstuffs,bytotalimmersioninnon-polar,iso-octane,and/orpolar,ethanol,solventsdependingonthepolarityofthepackagingmaterial.Accordingtoresultsobtainedbythismethod(see[1],[2],[3],[4],[5])andtakingphysio-chemicalconsiderationsintoaccount,theobtainedextractionefficiencyhas,generally,beenfoundtobeequivalenttoorhigherthanoverallmigrationresultsobtainedunderthetestconditions,10daysat40°C,2hat70°C,1hat100°C,30minat121°Cand30minat130°C.Toensureascompleteaspossibleextractionofthepotentialmigrants,astronginteraction,e.g.swelling,ofthesamplebytheextractionsolventisnecessary.Forthispurpose,iso-octaneisusedasanextractionsolventforplasticsmaterialsandarticlescontainingnonpolarfoodcontactlayers,suchaspolyolefins.Fortestsamplesmadefrompolarfoodcontactplasticssuchaspolyamideandpolyethyleneterephthalate,95%(v/v)aqueousethanolisused.Forpolystyrenes,plasticizedpolyvinylchlorideandotherpolymerswheretheidentificationorpolarityofthepolymerisnotclear,twoparallelextractiontestsshouldbeconductedusingbothoftheproposedextractionsolventsandtakingthehighervalueobtainedastherelevantresult.NOTE1Incaseofmultilayerstructuressuchasplasticslaminatesandco-extrudedplastics,thenatureofthefoodcontactlayerdeterminestheselectionoftheextractionsolvent(s).Thistestmethodshouldonlybeappliedtoflexiblepackagingswhicharelessthan300μminthickness.WhentheresultdoesnotexceedtheallowedoverallmigrationlimitthenthematerialcanbeconsideredtobeincompliancewithECregulations.Ifthetestresultexceedstheallowedoverallmigrationlimitthefollowingoptionsmaybeappliedchronologicallywithrespecttofurthermigrationtesting:1)single-sidedextractiontestusingacell,iftechnicallyfeasible(seeclause4MethodBofthisstandard);2)conventionalmigrationtestusingoliveoilorotherfattyfoodsimulants;NOTE2TheoverallmigrationlimitisspecifiedinCommissionDirective90/128/EEC[7]andtheconditionsoftestinCouncilDirective82/711/EEC[8]anditssubsequentamendments,[9],[10].MethodBisapplicableinthosecaseswherethetotalimmersiontest,EN1186-15MethodA,yieldstotalextractionvaluesthatexceedtheoverallmigrationormaybetechnicallyunsuitable,i.e.inthecaseofmultilayerstructures,suchasplasticslaminatesandco-extrudedfilms.Thistestmethodshouldprimarilyonlybeappliedtoflexiblepackagingswithaphysicalbarrierlayer(forinstanceofaluminiumorothermaterialtopreventpenetrativelossofextractionsolvent)andwhichhaveathinnerfoodcontactlayerthan300μm.IftheresultdoesnotexceedtheallowedoverallmigrationlimitthenthematerialcanbeconsideredtobeincompliancewithECregulations.Ifthetestresultexceedstheallowedoverallmigrationlimitthenthefollowingoptionmaybeappliedwithrespecttofurthermigrationtesting:-conventionalmigrationtestusingoliveoilorotherfattyfoodsimulants.NOTE3MethodsAandBarenotapplicabletotestmaterialsintendedforapplicationsover130°C.NOTE4Testmaterialsintendedforapplicationsover70°Cshouldbecheckedfortheirphysicalsuitabilityattheintendedtimeandtemperatureofuse.
【中国标准分类号】:X08;C53
【国际标准分类号】:67_250
【页数】:20P;A4
【正文语种】:英语