热封强度是指软塑包装热封边的封合牢度，又称热合强度、密封强度，其强度值的高低与热封温度、热封压力、热封时间等热封参数有直接关系。若热封参数设置过低，则热封层很难真正融合在一起，热封强度较低，易出现封口处开裂、漏气等问题。

而且在切袋时易出现拉丝的现象，影响包装袋的美观；而热封参数设置过高，热封处易发生皱缩，甚至会导致包装袋的热封处出现根切的问题，引起包装易在热封根部发生破袋。

热封参数的设置直接影响药品包装用软塑包装袋热封强度值的高低，热封强度是药品软塑包装袋的一项重要的物理机械性能指标。济南三泉中石实验仪器生产的热封试验仪是一款可以自由调节热封温度、热封压力、热封时间的仪器。

技术参数

热封温度室温－250℃，控温精度（±0.2℃）

热封时间0.01s～999.99s

热封延迟时间0.01s～999.99s

热封压强0.05MPa～0.7MPa

热封面积330mm×10mm 【可定制不同热封面积】

热封加热形式上下封头双加热或单加热

外形尺寸550mmX360mmX470mm(长宽高)

重量44Kg

环境要求

气源压力≤0.7MPa

环境温度15℃-50℃

相对湿度80%，无凝露

工作电源 220V 50Hz

药用铝箔热合测试仪

三泉中石还与齐鲁工业大学携手建立了「包装检测联合实验室」，与上海微谱建立了「CCIT联合实验室」，借助于联合实验室的成立，三泉中石与检测机构和科研院校的合作更加深入，大提升科研技术实力，为更好探索沿包装检测技术打下了坚实基础。

We have provided more than 8000 sets of packaging material testing instruments for many enterprises concerned with packaging quality control. Sanquan Zhongshi＇s products have been exported to more than 25 countries ａnd regions such as the United States, Britain, India, Indonesia, Turkey ａnd Iran. More than 5600 laboratories around the world are using Sanquan Zhongshi＇s testing instruments. In addition, Sanquan Zhongshi has established a "Joint Laboratory for packaging testing" with Qilu University of technology ａnd a "CCIT Joint Laboratory" with Shanghai micro spectrum. With the establishment of the joint laboratory, Sanquan Zhongshi has deepened its cooperation with testing institutions ａnd scientific research institutions, greatly improving its scientific research ａnd technical strength, It has laid a solid foundation for better exploring cutting-edge packaging testing technology.