CAJ | 학술논문

针对食品软包装复合膜热封时容易出现变形和起皱的问题，采用ANSYS 有限元仿真软件的热单元模块对典型的透明复合包装袋薄膜PET/PE/CPP和不透明复合包装袋薄膜PET /AL /PE 进行热变形仿真，分析热封温度、热封时间、冷却温度、热刀宽度及包装袋尺寸对热封变形的影响。结果表明，相同条件下，PET/PE/CPP的变形量约为PET/AL/PE 的变形量的6倍多；仿真条件下，热封温度为140℃，热封压力为0．5MPa，热封时间为0．5s，冷却温度为25℃，热刀宽度10mm；在包装袋长度和宽度相的条件下，可以获得较小的变形量。
침대식품연포장복합막열봉시용역출현변형화기추적문제，채용ANSYS 유한원방진연건적열단원모괴대전형적투명복합포장대박막PET/PE/CPP화불투명복합포장대박막PET /AL /PE 진행열변형방진，분석열봉온도、열봉시간、냉각온도、열도관도급포장대척촌대열봉변형적영향。결과표명，상동조건하，PET/PE/CPP적변형량약위PET/AL/PE 적변형량적6배다；방진조건하，열봉온도위140℃，열봉압력위0．5MPa，열봉시간위0．5s，냉각온도위25℃，열도관도10mm；재포장대장도화관도상적조건하，가이획득교소적변형량。
For the flexible food packaging is easy to appear deformation and wrinkle problem during heat sealing,deformation simulation of typical transparent composite packaging film PET/PE/CPP and opaque com-posite packaging film PET/AL/PE were set up by the thermal unit module of ANSYS finite element simulation software,and the influences of heat sealing temperature,heat sealing time,cooling temperature,hot knife width and packaging size were analysised.The results show in the same conditions,the deformation of PET/PE/CPP was over six times than the deformation of PET/AL/PE.Acorrding the simulation results,the smaller deforma-tion should be obtained when the heat sealing temperature was 1 40℃,heat sealing pressure was 0.5MPa,heat sealing time of 0.5 s,cooling temperature was 25℃,hot knife width was 1 0 mm,and the packaging length ap-proximately equal to the packaging width.