在實(shi)際生(sheng)產(chan)過程(cheng)中，由于熱(re)封(feng)(feng)(feng)壓(ya)(ya)力(li)、制袋機(ji)速以(yi)及復合基材的厚(hou)度(du)(du)等多方面影響，實(shi)際采(cai)用的熱(re)封(feng)(feng)(feng)溫(wen)(wen)度(du)(du)往往要高(gao)于熱(re)封(feng)(feng)(feng)材料的熔融溫(wen)(wen)度(du)(du)。熱(re)封(feng)(feng)(feng)的壓(ya)(ya)力(li)越(yue)小，要求熱(re)封(feng)(feng)(feng)溫(wen)(wen)度(du)(du)越(yue)高(gao)，機(ji)速越(yue)快，復合膜(mo)的面層(ceng)材料越(yue)厚(hou)，要求的熱(re)封(feng)(feng)(feng)溫(wen)(wen)度(du)(du)也(ye)越(yue)高(gao)。熱(re)封(feng)(feng)(feng)溫(wen)(wen)度(du)(du)若(ruo)低(di)于熱(re)封(feng)(feng)(feng)材料的軟化點，則無論怎樣加大壓(ya)(ya)力(li)或延熱(re)封(feng)(feng)(feng)時間，均不能使熱(re)封(feng)(feng)(feng)層(ceng)真正(zheng)封(feng)(feng)(feng)合。