Vacuum bags of qualified or not directly affect the interests of manufacturers, if the selected vacuum bag quality problems, food manufacturers will cause significant losses. In the production of vacuum bags must be selected when qualified, good quality raw materials.
Vacuum packaging bags are one of the most preferred products for many companies today. Vacuum bags have a very important role in the food packaging and packaging industries because vacuum bags can not only reduce the product, prevent products from being exposed to external gases Contact with the resulting oxidation, but also make the taste of the product is basically no change, vacuum packaging products to ensure quality and taste.
There are many raw materials used to make vacuum packaging, the most widely used polypropylene and polyethylene. Raw materials will have a direct impact on the quality of the packaging, if the quality of raw materials, then the quality of vacuum bags will be good. Under normal circumstances, qualified high-quality vacuum bags will use relatively high purity polyethylene and polypropylene to produce, not and can not use renewable or semi-renewable raw materials to injection processing. In the production of polyethylene and polypropylene and other raw materials are granular, after high temperature heating it formed a paste, after a series of processing processes to form a very thin film. If the polypropylene is too hard, then after the high temperature heating of raw materials will be very hard, after other processes will lead to some of the film is very thick and very thin, but also often rupture of the phenomenon. If the polypropylene is too soft, then it will be like water, leading to the film is not connected to the fundamental, there is no way to form a roll of a volume, this product is certainly no market in the market.
Vacuum packaging bags for the requirements of raw materials must be soft and hard moderate, and the internal do not mix other impurities and dust, once mixed with some dust and impurities, then the quality of its impact is great.
