Features of aluminum foil: the surface of aluminum foil is clean and sanitary, and no microorganism can grow on it. It can be directly contacted with food without any worries that may endanger human health. As an opaque packaging material, it has good protection for products exposed to sunlight, such as oily products, solid drinks, coffee, etc. It is a good packaging material. No matter at high temperature or low temperature, aluminum foil will not be soaked. The air and water permeability are low, which can protect the inner products well. The aluminum foil itself is not volatile. It and the packaged food will not dry or shrink. The tasteless and odorless packaging materials will not make the packaged food have any peculiar smell. Stable performance, suitable for storage in various high and low temperature environments, with certain corrosion resistance.

為什么要在包裝袋內(nèi)加入一層純鋁箔呢？鋁箔也廣泛用于隔離層，熱交換，和用作導(dǎo)電體。通常，用作紙包飲品包裝、食品包裝袋里的鋁箔厚度僅僅為6.5微米。這薄薄的鋁層可以防水、保持鮮味、防止有害微生物和防污。具有不透明，呈銀白色，有反光澤，良好的阻隔性、耐高/低溫、耐油性、熱封性、遮旋光性、保香性、無(wú)異味、柔軟性等特點(diǎn)。

Why add a layer of pure aluminum foil into the packaging bag? Aluminum foil is also widely used as insulating layer, heat exchange, and conductor. Generally, the thickness of aluminum foil used in paper packaging of drinks and food packaging bags is only 6.5 microns. This thin aluminum layer can be waterproof, keep fresh, prevent harmful microorganisms and prevent pollution. It is opaque, silvery white, anti-gloss, good barrier property, high/low temperature resistance, oil resistance, heat sealing property, light shielding property, fragrance retention property, no odor, softness and other characteristics.

鍍鋁包裝袋，是在塑料膜上鍍上一層薄薄的鋁粉，起到裝飾作用。鍍鋁包裝袋也叫鋁塑包裝袋。鋁箔包裝袋，顧名思義是內(nèi)部結(jié)構(gòu)含有鋁箔（純鋁）的一種包裝袋，因內(nèi)層結(jié)構(gòu)含有純鋁箔，簡(jiǎn)稱(chēng)為鋁箔包裝袋，也叫純鋁袋，鋁鉑袋。其實(shí)鋁箔袋是有多種塑料薄膜和99.9％的純鋁層復(fù)合后，通過(guò)制袋成型機(jī)械封口裁切而成的袋子。

The aluminized packaging bag is coated with a thin layer of aluminum powder on the plastic film to play a decorative role. Aluminized packaging bags are also called aluminum-plastic packaging bags. The aluminum foil packaging bag, as the name implies, is a kind of packaging bag with aluminum foil (pure aluminum) in the internal structure. Because the internal structure contains pure aluminum foil, it is called aluminum foil packaging bag for short, also called pure aluminum bag, aluminum platinum bag. In fact, the aluminum foil bag is a bag made of a variety of plastic films and 99.9% pure aluminum layer, which is cut through the mechanical sealing of the bag forming machine.

從性能上說(shuō)，降溫效果比鍍鋁袋好，純鋁袋完全避光，鍍鋁袋是遮光效果。從材料上說(shuō)，純鋁袋是純鋁，純度高，屬軟性材料；鍍鋁袋摻有復(fù)合材料，是脆性材料。從使用上來(lái)說(shuō)，純鋁袋更適合抽真空，如裝熟食、肉類(lèi)等產(chǎn)品，而鍍鋁袋適合裝茶葉、粉末等。從成本上說(shuō)，純鋁袋的單價(jià)比鍍鋁袋的高。把袋子里面對(duì)著燈光或者太陽(yáng)光照，能透過(guò)袋子看見(jiàn)光的就是鍍鋁箔，看不見(jiàn)的就是純鋁箔。

In terms of performance, the cooling effect is better than the aluminized bag. The pure aluminum bag is completely dark, and the aluminized bag is the shading effect. In terms of material, the pure aluminum bag is pure aluminum with high purity and belongs to soft material; The aluminized bag is mixed with composite materials and is a brittle material. In terms of use, pure aluminum bags are more suitable for vacuuming, such as filling cooked food, meat and other products, while aluminized bags are suitable for filling tea, powder, etc. In terms of cost, the unit price of pure aluminum bags is higher than that of aluminized bags. When the inside of the bag is exposed to light or sunlight, the light that can be seen through the bag is aluminum foil, and the invisible is pure aluminum foil.

在外觀上，兩者的區(qū)別不大。同樣一個(gè)產(chǎn)品，放在鍍鋁包裝內(nèi)可能一個(gè)月會(huì)出現(xiàn)水分丟失，微生物大量滋生的情況。而放在鋁箔包裝袋內(nèi)，可能半年以后才會(huì)出現(xiàn)類(lèi)似的情況。為了保證內(nèi)裝產(chǎn)品的品質(zhì)，很多包裝進(jìn)行了真空處理。進(jìn)行真空之后，內(nèi)部氧氣減少，微生物沒(méi)有生長(zhǎng)的環(huán)境，從而達(dá)到保護(hù)產(chǎn)品的作用。

In terms of appearance, there is little difference between the two. The same product, placed in aluminized packaging, may have moisture loss and a large number of microorganisms in a month. If it is placed in the aluminum foil packaging bag, the similar situation may not occur until half a year later. In order to ensure the quality of the products inside, many packages have been vacuum treated. After vacuum, the internal oxygen is reduced, and there is no environment for microorganism growth, so as to protect the product.

其次，鋁箔包裝袋穩(wěn)定性很好，一般不會(huì)受外部環(huán)境的影響發(fā)生變質(zhì)的情況。而從功能作用是，兩者相差甚遠(yuǎn)。，鋁箔袋由于夾層是純鋁箔，其防潮，避光，防水，放氧化作用要遠(yuǎn)遠(yuǎn)強(qiáng)于鍍鋁包裝袋。

Secondly, the aluminum foil packaging bag has good stability and generally will not deteriorate due to the influence of external environment. In terms of function, the two are far from each other. First of all, because the interlayer of the aluminum foil bag is pure aluminum foil, its moisture-proof, light-proof, water-proof and oxidation-resistant effect is far stronger than that of the aluminized packaging bag.

經(jīng)久耐用是鋁箔包裝袋的代言詞。兩種包裝袋皆可印刷圖案，鋁箔袋的手感較軟，鍍鋁袋的手感較硬。因此鋁箔袋更適合用于食品，藥品，化工產(chǎn)品，一些電子配件，機(jī)械配件由于密封需要也經(jīng)常會(huì)用到鋁箔袋。而鍍鋁袋則多用于快速品，這并不是說(shuō)鍍鋁包裝袋不好，恰恰證明鍍鋁包裝的性價(jià)比很高。

Durability is the pronoun of aluminum foil packaging bag. Both kinds of packaging bags can be printed with patterns. The aluminum foil bag has a soft feel and the aluminized bag has a hard feel. Therefore, aluminum foil bags are more suitable for food, medicine, chemical products, some electronic parts, and mechanical parts. Because of the need for sealing, aluminum foil bags are often used. The aluminized bags are mostly used for fast goods. This is not to say that the aluminized bags are not good, but just to prove that the aluminized bags are cost-effective.