Soft packaging is plastic film, the seal means mainly through sealed vacuum heatsealingmachine;
软包装主要是铝塑膜，其密封方式主要通过抽真空热封机进行密封；
2
Tarpaulin with a heatsealingmachine fight site, the product quality and cheap, sold in many countries.
篷布拼幅用热合机等，产品质优价廉，销往多个国家。
3
In this paper, heating power and stable heat conduction quality of the resistance-heatsealingmachine were studied according to principles of heat transfer.