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The packaging factory teaches you to identify vacuum packaging bags of different materials

by:Supouches Packaging     2022-09-12
Look at the materials The common vacuum packaging bag materials are generally selected: PA+PE, PET+PE, MOPE, PVC, etc. Now the best material should be nylon+polyethylene (PA+PE), PA+PE vacuum compression bag It is a new type of plastic made of nylon and plastic. This material is the premise to ensure no air leakage. It has good flexibility and durability. It does not change its properties when exposed to low temperatures. However, because of the relatively high cost, domestic manufacturers rarely use this material. PA+PE can burn slowly during the combustion test, the flame is bright, the bottom is blue, and the top is yellow. After melting and dripping, it continues to burn. The smokeless molten dripping has the smell of candle blowing out and burning wool. The other is PET+PE material. PET is commonly known as polyester polyester. The vacuum compression bag made of PET+PE is not soft enough, especially if it becomes hard and easy to break at low temperature, it is best for friends in the north not to use the vacuum compression bag of this material. So how to identify these two different materials? To be honest, inexperienced friends are like identifying counterfeit banknotes. It is difficult to distinguish the true and false banknotes from high-simulation counterfeit banknotes, but when they are compared with real banknotes, they are revealed. Therefore, to identify two different materials, it is best to compare the two together. The method is: touch, the softer one is made of PA material, and the harder one is made of PET material. Second listen, rub it with your hands, the dull sound is made of PA material, and the sharper sound is made of PET material. The third is to put the two materials in the refrigerator for a while, and the harder one is PET. Now many brands of compression bags on the Internet sell very cheaply, and they are also said to be PA+PE. The vast majority of consumers can beware of the advantages of MOPE is that it is particularly soft and feels better than others, but the adhesion is not good, and there are generally more air leaks. Now it is gradually eliminated from the market. I believe that many people have experienced it. They finally sucked the air and swelled up again in one night. Needless to say, PVC is not environmentally friendly at all. PVC is incombustible, and extinguishes immediately after leaving the fire. When burning, it is yellow-orange, with green edges, white smoke, and light green and yellow flames are sprayed. It softens, can be drawn, and has a pungent hydrogen chloride smell. Look at the thickness The thickness of the vacuum compression bag is“Silk”To represent, the general vacuum compression bag thickness from 6-8 silk“Silk”The larger the number, the thicker the bag. Generally, it is better to use vacuum compression bags with 6-8 wires, because such bags are of moderate thickness, and the bags will not be too hard and brittle because they are too thick. It will not be scrapped in a year or two because the bag is too thin. Generally, 6-8 silk PA+PE bags can be used for about 5 years. Taili and Hubei Yijia now use reinforced PA+PE material to produce 6-7 wire vacuum compression bags, which are both soft and durable. They are the only vacuum compression bags in the market that can be so thin and durable. Some manufacturers The thickened version of 11-wire or even 15-wire, etc. is advocated because some manufacturers use recycled plastic for reprocessing. Because they are afraid of poor quality, they deliberately thicken them. Such bags will often leak air and will not be used a few times. It will be scrapped, just like Kumho tires. In addition, the vacuum compression bag with good details must be more finely done in the exhaust valve and seal and even the zipper slider. Good quality always runs through. If you encounter those unscrupulous merchants in the future, if you still can't distinguish the true from the false, then you should contact us, and our packaging customer service will do our best to help you fight counterfeiting!
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