Food packaging bags, which are ubiquitous in daily life, are a kind of packaging design. In order to facilitate the preservation and storage of food in life, food packaging bags are produced. Food packaging bags refer to film containers that are in direct contact with food and are used to contain and protect food.
Food packaging bags can be divided into: ordinary food packaging bags, vacuum food packaging bags, inflatable food packaging bags,
Boiled food packaging bags, retort food packaging bags and functional food packaging bags.
Vacuum packaging is mainly used for the preservation of food, and the growth of microorganisms is suppressed by draining the air inside the packaging to achieve the purpose of extending the shelf life of food. Strictly speaking, vacuum evacuation, that is, no gas exists inside the vacuum package.
1、What are the functions and uses of nylon materials in food packaging bags
The main materials of nylon composite bags are PET/PE, PVC/PE, NY/PVDC, PE/PVDC, PP/PVDC.
Nylon PA vacuum bag is a very tough vacuum bag with good transparency, good gloss, high tensile strength, and good heat resistance, cold resistance, oil resistance, abrasion resistance, puncture resistance Excellent, and relatively soft, excellent oxygen barrier and other advantages.
The nylon vacuum packaging bag is transparent and beautiful, not only the dynamic visualization of the vacuum-packed items, but also easy to identify the status of the product; and the nylon composite bag composed of multi-layer films can block oxygen and fragrance, which is very conducive to the extension of fresh-keeping storage period. .
Suitable for packaging hard items, such as greasy food, meat products, fried food, vacuum-packed food, retort food, etc.
2、What are the functions and uses of PE materials in food packaging bags
PE vacuum bag is a thermoplastic resin made by polymerization of ethylene. The transparency is lower than that of nylon, the hand feel is stiff, the sound is brittle, and it has excellent gas resistance, oil resistance and fragrance retention.
Not suitable for high temperature and refrigeration use, the price is cheaper than nylon. Generally used for ordinary vacuum bag materials without special requirements.
3、What are the functions and uses of aluminum foil materials in food packaging bags
The main synthetic materials of aluminum foil composite vacuum packaging bags are:
PET/AL/PE、PET/NY/AL/PE、PET/NY/AL/CPP
The main component is aluminum foil, which is opaque, silver-white, reflective, and has good barrier properties, heat-sealing properties, light-shielding properties, high temperature resistance, non-toxic, odorless, light-shielding, heat insulation, moisture-proof, fresh-keeping, beautiful, and high strength. advantage.
It can withstand high temperature up to 121 degrees and low temperature up to minus 50 degrees.
The aluminum foil vacuum material can be used to cook high-temperature food packaging bags; it is also very suitable for meat processing cooked food such as braised duck neck, braised chicken wings, and braised chicken feet that foodies usually like to eat.
This kind of packaging has good oil resistance and excellent fragrance retention performance. The general warranty period is about 180 days, which is very effective for retaining the original taste of foods such as duck necks.
4、What are the functions and uses of PET materials in food packaging bags
Polyester is a general term for polymers obtained by polycondensation of polyols and polyacids.
Polyester PET vacuum bag is a colorless, transparent and glossy vacuum bag. It is made of polyethylene terephthalate as raw material, made into thick sheet by extrusion method, and then made by biaxial stretching bag material.
This kind of packaging bag has high hardness and toughness, puncture resistance, friction resistance, high temperature and low temperature resistance, chemical resistance, oil resistance, air tightness and fragrance retention. It is one of the commonly used barrier composite vacuum bag substrates. one.
It is commonly used as the outer layer of retort packaging. It has good printing performance and can print brand LOGO well to increase the publicity effect of your brand.
Post time: Sep-30-2022