Production of vacuum packaging materials must be carefully chosen

use vacuum packaging to food packaging is one of nowadays many enterprises * products, vacuum packaging bags in food packaging and product packaging industry has a very important role, because vacuum bags can not only reduce product filed, prevent product oxidation caused by gas contact with the outside world, can make the products more texture basically won't have what change, vacuum packing products can ensure the quality and taste.

used in the production of vacuum packaging there are a lot of raw materials, including polypropylene and polyethylene use * to a wide range of raw materials of good will directly affect the quality of the packaging, if the good quality of raw materials, the quality of the vacuum packing bag will be good, in general the vacuum bags are used of high quality qualified purity is higher to production of polyethylene and polypropylene, not can't regeneration or half a renewable raw materials for injection molding processing. In the production of polyethylene and polypropylene raw materials, such as granular, after high temperature heating it formed the mushy, after a series of machining process with very thin film was formed. If the raw material of polypropylene too hard after high temperature heating will will be very hard, when through other processes can lead to some very thick some very thin membrane, will often appear rupture phenomenon. If polypropylene too soft it will be like water, leading to the membrane not connection, there is no way to form a roll of a roll, such products must be no sale in the middle of the market. Vacuum bags to the requirement of raw material need soft hard moderate, and the internal don't mix of other impurity and dust, when some mixed with dirt and impurities, for it is a big difference to the quality. /