CAJ | 학술논문

热合强度是考核复合塑料包装袋热合面封口牢固度的一个重要指标，检测标准中并没有说明测量热合强度时的失效模式。根据QB/T 2358—1998《塑料薄膜包装袋热合强度试验方法》，对PET/Al/PA/RCPP结构、OPP/VMPET/PE结构、PET/RCPP结构、PET/Al/PA/RCPP结构薄膜和阴阳镀铝复合薄膜几种不同材质塑料包装袋进行了热合强度试验，总结得出了5种失效模式，即热封层剥离、热封边缘断裂、薄膜断裂、薄膜分层、先分离后撕裂，结合测量曲线图与失效模式图，分析了各失效模式的形成原因，以便有效指导与改进塑料包装袋的生产工艺。
열합강도시고핵복합소료포장대열합면봉구뢰고도적일개중요지표，검측표준중병몰유설명측량열합강도시적실효모식。근거QB/T 2358—1998《소료박막포장대열합강도시험방법》，대PET/Al/PA/RCPP결구、OPP/VMPET/PE결구、PET/RCPP결구、PET/Al/PA/RCPP결구박막화음양도려복합박막궤충불동재질소료포장대진행료열합강도시험，총결득출료5충실효모식，즉열봉층박리、열봉변연단렬、박막단렬、박막분층、선분리후시렬，결합측량곡선도여실효모식도，분석료각실효모식적형성원인，이편유효지도여개진소료포장대적생산공예。
An important indicator of sealing fastness for composite plastic bags is heat sealing strength. Its failure mode has not been explained in testing standards. According to QB/T 2358—1998 ofTest Method for Heat Sealing Strength of Plastic Film Packaging Bag, experiments for heat sealing strength were conducted with plastic packaging bags of different materials,such as PET/Al/PA/RCPP film, OPP/VMPET/PE film, PET/RCPP film, PET/Al/PA/RCPP film and aluminum laminated film. Five failure modes were concluded as: heat seal peeling, heat seal edge fracture, film fracture, film layered, separation and tearing. Analysis on the causes of failure combined with the measurement graphs and failure mode patterns could effectively guide and improve the production process of plastic bags.