At ordinary times, we see a variety of food packaging forms. The reason is that the requirements for food packaging skills will vary with the variety of food and the characteristics of food packaging plastic bag design,

別的，化肥、畜牧、農藥、花肥（鍍鋁、鋁箔袋）運送途徑和運送環節，運送方法，出售渠道，食品包裝塑料袋設計主要圍繞哪幾點進行希望貨架壽數，化肥、畜牧、農藥、花肥（鍍鋁、鋁箔袋）大包裝袋階段，化肥、畜牧、農藥、花肥（鍍鋁、鋁箔袋）尤其是對氣體的密封性有必要到達的效果，否則，氣體一旦溢出，食品貯存就會遭到不同程度的影響。

In addition, what are the transportation routes and links of chemical fertilizer, animal husbandry, pesticide and flower fertilizer (aluminized and aluminum foil bags), transportation methods, sales channels, food packaging plastic bag design, expected shelf life, large packaging bag stage of chemical fertilizer, animal husbandry, pesticide and flower fertilizer (aluminized and aluminum foil bags), chemical fertilizer, animal husbandry, pesticide and flower fertilizer (aluminized and aluminum foil bags) In particular, it is necessary to achieve the effect of gas tightness. Otherwise, once the gas overflows, food storage will be affected to varying degrees.

有的食品包裝袋廠家生產的食品袋需要進行屢次覆膜，便是把多種膜層復合在一起，而包裝袋的柔軟程度和膜層的多少無關，只和加工工藝與添加劑的品種有關。

The food bags produced by some food packaging bag manufacturers need to be coated repeatedly, that is, a variety of film layers are combined together, and the softness of the packaging bag has nothing to do with the number of film layers, but only related to the processing technology and the variety of additives.

包裝袋的開展經歷了四個明顯的階段:原始包裝袋階段，大包裝袋階段，小包裝袋階段，現在逐步進入環保(綠色)包裝袋的新階段。跟著商品經濟的開展，包裝自身的商品性也越來越明顯，它已成為-種不再依附于商品生產的特殊產品，一種一切商品都離不開的，廣泛應用的產品。

The development of packaging bag has experienced four obvious stages: original packaging bag stage, large packaging bag stage and small packaging bag stage. Now it has gradually entered a new stage of environmental protection (green) packaging bag. With the development of commodity economy, the commodity nature of packaging itself is becoming more and more obvious. It has become a special product that is no longer dependent on commodity production. It is a widely used product that all commodities are inseparable from.