Foshan manufacturers supply vacuum bags, transparent vacuum bags, food vacuum bags at discounted prices

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Vacuum packaging materials commonly use triple-sealed packaging bags made of double-layer composite film or three-layer aluminum thin composite film. Vacuum packaging machines are commonly used in two types: cavity type and external pumping type. my country's vacuum packaging technology was developed in the early 1980s, and vacuum inflatable packaging technology began to use carbon oxide in the early 1990s to inhibit the activity of microorganisms such as mold and spoilage bacteria. Some foods, such as crispy and fragile foods, easily deformed and oily foods, and foods with sharp edges or high hardness that will puncture the composite vacuum bag, after being vacuum-inflated and packaged, the inflation pressure inside the composite vacuum bag is stronger than the atmospheric pressure outside the packaging bag, which can It effectively prevents food from being broken and deformed under pressure without affecting the appearance, printing and decoration of the packaging bag. With the promotion of small packaging of composite vacuum bags and the development of supermarkets, their scope of application will become more and more extensive, and some will gradually replace rigid packaging vacuum bags, also known as polyamide or nylon. Yellowish translucent or milky white opaque resin. Relative density ~, melting point ~ ℃. It has excellent wear resistance, oil resistance, and self-lubricating properties. It has the highest heat resistance, strength, and rigidity among aliphatic nylons. Tensile strength ~, compressive strength, Izod impact strength (notched) thermal deformation temperature °C, hardness, volume resistivity, dielectric strength, self-extinguishing. It is produced by the polycondensation reaction of adipic acid and hexamethylenediamine. It can be formed and processed by extrusion, injection molding, blow molding and other methods. Can be reinforced, filled, alloyed and modified.