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source:other news release time:2022-10-26 Hits:
First, aluminum foil material
Aluminum foil this material of the packaging bag barrier air performance, high temperature resistance (121℃), low temperature resistance (-50℃), oil resistance. The purpose of aluminum foil bag is different from the ordinary bag, mainly used for high temperature cooking and preservation of low temperature food. However, aluminum foil packaging bag due to fragile material, easy to break, coupled with poor acid resistance, no heat sealing. Therefore, it is generally only used as the middle material of the bag, such as the milk packaging bag for drinking in our life, the frozen food packaging bag, will use aluminum foil.
Second, PET material
PET is also called bidirectional stretch polyester film. The packaging bag of this material has good transparency, strong luster, strength and toughness than other materials, and is not easily broken. It is non-toxic, tasteless, high safety, and can be directly used in food packaging. So in daily life PET is a variety of food, medicine, non-toxic and sterile packaging materials. However, its shortcomings are also very obvious, that is, no heat, no alkali, can not be placed in hot water immersion.
Three, nylon
Nylon is also called polyamide, the material transparency is also very good, and heat resistance, oil resistance, puncture resistance, feel soft, but not moisture resistance, and poor heat sealing. So nylon packaging bags are mostly used for packaging solid food, as well as some meat products and cooking food, such as chicken, duck, ribs and other packaging, can extend the shelf life of food.
Four, OPP material
OPP, also known as oriented polypropylene, is the most transparent packaging materials, but also the most brittle, tension is very small. Most of the transparent packaging bags used in our life are made of opp materials, which are widely used in clothing, food, printing, cosmetics, printing, paper and other industries.
Fifth, HDPE material
HDPE is the full name of high-density polyethylene, this material made of bags also known as PO bags, its use of a wide range of temperature, can be used for frozen food packaging, but also can be applied to 100 degrees Celsius boiling treatment packaging bags. In daily life, it is mostly used in food packaging, grocery shopping bags, but also can be made into composite film, used for food permeability and insulation packaging film.
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