标题: Abercrombie Deutschland ctw mpjf snpa [打印本页] 作者: lpipzerdkpk 时间: 2012-6-25 18:09 标题: Abercrombie Deutschland ctw mpjf snpa plastic food packaging materials additive migration simulation , relationresultegion ) the center layer and an outer layer of migration ,some assumptions of the transfer parameters are shown in table 1 .
table 1 evaluation of reversemigration parameter value tab.1parametersforestimationofreversemigration* :that the value 40 .c in some assumptions of swelling conditions, bht from the center layer and an outer layer to the alcohol migration output ,see figure 5 .
can see, using the established simulation model can facilitate the study of some mixed boundary conditions on migration of additives ,make up the existing analytical model with experimental study ,compared ,save time ,abercrombie deutschland,reduce costs .
5 theapplication of finite element method to establish the mathematical model is able to predict the migration process of multilayer structure .calculation model gives food packaging migration method to solve the problem ,not only 1010080604o2oo figure 540℃under the assumption that theswelling under the conditions of bht to fig.
5outputforbhtmigrationwithassumptionofswellingtoethanolat40 ℃alcoholmigration can be used for the same material and multilayer structure ,replica mac cosmetics,and can be used for different kinds of materials .if some parameters related to the show ,can simulate any laminated or composite extrusion structure of film in the migration of additives .
furthermore ,this model can simulate the mixing and irregular boundary conditions of additive migration behavior .this model became the determining additives from plastics packaging materials to food the migration of an effective utility ,expand the migration method .
yuan zhenhua . food packaging materials chemical to food migration and zhejiang journal of preventive medicine, 1999,,zeddamchafia ,ecco skor, ,2002180:191,1999118(2- 3):227 zhu yong ,ugg online,wang zhiwei.
recycled plastic migration of pollutant in finite element packaging engineering ,2005,26(5):88 , ,2003,16:107,,franzr , -- rundschau ,2003,90:137 ～,co1omboi ,lapasinr.experimentaldetermi - nationofthetheophyllinediffusioncoefficientinswollensodi - um ,2001,76:93,,geddeuw.
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