在實(shi)際(ji)生(sheng)產過程中，由于(yu)熱(re)封(feng)(feng)壓力(li)、制袋機(ji)(ji)速以及復(fu)合基(ji)材(cai)(cai)的厚(hou)度(du)(du)等多(duo)方面(mian)影響，實(shi)際(ji)采用的熱(re)封(feng)(feng)溫(wen)(wen)度(du)(du)往(wang)往(wang)要高于(yu)熱(re)封(feng)(feng)材(cai)(cai)料的熔融溫(wen)(wen)度(du)(du)。熱(re)封(feng)(feng)的壓力(li)越(yue)(yue)小，要求熱(re)封(feng)(feng)溫(wen)(wen)度(du)(du)越(yue)(yue)高，機(ji)(ji)速越(yue)(yue)快，復(fu)合膜的面(mian)層(ceng)材(cai)(cai)料越(yue)(yue)厚(hou)，要求的熱(re)封(feng)(feng)溫(wen)(wen)度(du)(du)也越(yue)(yue)高。熱(re)封(feng)(feng)溫(wen)(wen)度(du)(du)若低于(yu)熱(re)封(feng)(feng)材(cai)(cai)料的軟(ruan)化點，則無(wu)論怎樣(yang)加(jia)大壓力(li)或延熱(re)封(feng)(feng)時間，均(jun)不能使熱(re)封(feng)(feng)層(ceng)真正封(feng)(feng)合。