Aluminized bag (film) It is a high-temperature vacuum state, uniformly coated with high-purity metal aluminum on the plastic film. Because it is coated on plastic, metal aluminum mainly plays a decorative role, which does not greatly help improve the barrier properties of the material.

Aluminum foil bag (film) It is made of pure metal aluminum. The thinnest thickness can reach 0.0065MM. If you press it with your hand, it will break. Although it is so thin, it looks weak and windy, but It is compounded with other plastics, and its role is great. After compounding with more than one layer of plastic, it can improve the barrier properties, sealing properties, fragrance retention, shielding properties, etc. of the plastic.

1. Viewing: Because the brightness of aluminum foil is not as bright as that of aluminized, the reflectivity of aluminum foil is not as good as that of aluminized film. Aluminized bags can show people's shadows, except those with aluminized film and aluminized coating. The appearance of the matte film is similar to that of aluminum foil. You can block the mouth of the bag, look inside the bag through strong light, the inside of the aluminum foil bag is opaque, and the light-transmitting is the aluminum-plated bag.

2. Feel: The feel of aluminum foil bag is thick and stiff. It is harder and heavier. The feel of aluminum foil bag is lighter and softer than that of aluminum foil bag.

3. Folding: The aluminum foil bag is easy to fold out the dead mark of the dead fold, the aluminum-plated bag will not be folded into the dead fold dead mark, and it will rebound quickly.

4. Twisting: After the aluminum foil bag is twisted, the coalescence is not easy to rebound, and the aluminum layer will break. After being twisted, the aluminum-plated bag will quickly disperse and the aluminum layer will not have obvious cracks.

5. Burning: The aluminum foil is not easy to burn with the fire point, the aluminum layer will be rolled back, and the aluminum foil packaging will leave gray aluminum slag after burning. When the aluminized film is burned, different plastic films can be burned without the residue of aluminum slag.

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The difference between aluminum plating and pure aluminum

Lin Zhihao 10:05:22

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Shenzhen Xinhewei Packaging Materials Co., Ltd.szxinhewei.com.cn 10:05:28

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Shenzhen Xinhewei Packaging Materials Co., Ltd.szxinhewei.com.cn 10:07:18

Composite bags are everywhere in ordinary life. The packaging bags for snacks, candy and biscuits in supermarkets are packed with composite bags. Many food manufacturers often use bags when they are separated. The reason, today we will help you analyze why these bags are separated.

One: Delamination caused by imperfect materials

Many manufacturers think that the materials of all bags are the same, but this is not the case. For different characteristics of the products, the materials of the packaging bags are different. Some products have high oil content, some products require high temperature processing, and some products require low temperature Refrigeration, so the wrong layer of bag material is very common.

Second: the delamination caused by composite technology

Composite bags are packaging bags made by combining more than two layers of materials. We are professionally called: composite bags. These materials are bonded together by a special process. If the technology is not sufficient, the use of more or less glue during the compounding process will affect the delamination of the bag in the future.

Three: Insufficient curing time after compounding

After the compound bag is compounded, the compounded material needs to be placed in an environment with a constant temperature of 50 degrees for baking. The baking time must reach 48 hours. The purpose of baking is to dry the glue in the compounding process. In order to reduce the production time, some manufacturers take out the bags in advance before baking. Such bags will definitely be separated after a period of time.

The several reasons mentioned above are the most important reasons for the delamination of the composite bag. Therefore, when you choose the manufacturer of the composite bag, you must check and understand clearly, so as to avoid the delamination situation during the use of the product. Product impact.

Composite bag cannot be separated

Composite bags are everywhere in ordinary life. The packaging bags for snacks, candy and biscuits in supermarkets are packed with composite bags. Many food manufacturers often use bags when they are separated. The reason, today we will help you analyze why these bags are separated.

One: Delamination caused by imperfect materials

Many manufacturers think that the materials of all bags are the same, but this is not the case. For different characteristics of the products, the materials of the packaging bags are different. Some products have high oil content, some products require high temperature processing, and some products require low temperature Refrigeration, so the wrong layer of bag material is very common.

Second: the delamination caused by composite technology

Composite bags are packaging bags made by combining more than two layers of materials. We are professionally called: composite bags. These materials are bonded together by a special process. If the technology is not sufficient, the use of more or less glue during the compounding process will affect the delamination of the bag in the future.

Three: Insufficient curing time after compounding

After the compound bag is compounded, the compounded material needs to be placed in an environment with a constant temperature of 50 degrees for baking. The baking time must reach 48 hours. The purpose of baking is to dry the glue in the compounding process. In order to reduce the production time, some manufacturers take out the bags in advance before baking. Such bags will definitely be separated after a period of time.

The several reasons mentioned above are the most important reasons for the delamination of the composite bag. Therefore, when you choose the manufacturer of the composite bag, you must check and understand clearly, so as to avoid the delamination of the product during use. Product impact.