一、引言 目前,塑料食品袋大都利用瞬间发热现象,采用封口机进行热合封口。 封口机销售产家有福建、浙江、四川等地。从结构上讲,基本情况是好的。但从经济、适用的角度来看,尚存在不足。图1所示为国内某一产家整机线路,图2为国内较有 First, the introduction At present, most of the use of plastic food bags instant heat phenomenon, the use of sealing machine heat sealing. Sealer sells home Fujian, Zhejiang, Sichuan and other places. From a structural point of view, the basic situation is good. However, from an economic and applicable point of view, there are still shortcomings. Figure 1 shows a production line of the whole country, Figure 2 is more domestic