People's living standards continue to improve, the demand for all kinds of convenience food also increased, but also greatly stimulating the rapid development of food packaging industry in china. The vacuum packaging machine packaging machinery development faster, more broad prospects. There are many kinds of vacuum packaging machine, outside pumping vacuum packing machine is a typical one of them.

先说下外抽式真空包装机的定义吧。常常把被包装物放到真空室的外侧完成真空包装的设备叫外抽式真空包装机。外抽式真空包装机主要是为较大的包装物抽真空包装而设计的。

Say first defined outside pumping vacuum packing machine. Often the outside packaging in the vacuum chamber vacuum packaging equipment called outside pumping vacuum packing machine. Outside pumping vacuum packing machine is mainly for the packaging of large vacuum packaging and design.

再说说外抽式真空包装机的原理。与内抽式真空包装机的结构不同，外抽式真空包装机是通过抽气嘴放到被包装物的包装袋内，抽空空气，退出抽气嘴，然后完成封口。外抽式真空封口线的动力来源一般为汽缸或电机。

Say that the principle of outside pumping vacuum packing machine. And pumping vacuum packing machine structure is different, outside pumping vacuum packing machine is through the suction nozzle into the packaging bag is packaging, air is evacuated, exit the suction nozzle, and then complete the sealing. Power source outside pumping vacuum sealing line for cylinder or motor.

还要说一说外抽式真空包装机的分类。外抽式真空包装机根据包装物的放置位置不同，分水平外抽式真空包装机和垂直外抽式真空包装机。水平外抽式真空包装机的被包装物是水平放置；垂直外抽式真空包装机的被包装物是垂直放置。水平外抽真空包装机在市场上更常见一下。

Still say that the classification that outside pumping vacuum packing machine. Outside pumping vacuum packing machine according to the position of the different packaging, level outside pumping vacuum packing machine and vertical outside pumping vacuum packing machine. Horizontal pump vacuum packaging machine packaging is horizontal; vertical outside pumping vacuum packaging machine packaging is placed vertically. Horizontal outside pumping vacuum packing machine is more common in the market.

最后要说一下购买外抽真空包装机时应注意的内容。 选择真空包装机时，不要单单靠型号来选取机型，一般来说：由于各个用户所生产的食品不尽相同，包装尺寸不尽一样，真空包装的技术等级要求不同，工作效率的要求不同，而应根据用户自己产品的特点、包装袋尺寸的大小。用户确定机型的主要依据是该包装机的封口长度，双排间距、真空室最大可利用高度、整机生产效率高低等。

Finally to say should pay attention to purchase outside pumping vacuum packing machine content. Select vacuum packaging machine, not simply rely on models to select the models, in general: because each user produced food is not the same, not the same package size, technical level vacuum packaging requirements are different, the work efficiency of the requirements are different, and should be based on the characteristics, the user's own product packaging bag size. User determined mainly based on models is the sealing length of the packing machine, double row spacing, the vacuum chamber height, maximum use of the high production efficiency etc..