1. Characteristic summary of nylon film for food packaging bags
Nylon film, abbreviated as PA, scientific name polyamide film, it is an extremely tough material. The advantages are as follows: transparent and shiny, tensile, strong tensile, heat, cold, puncture and other environments, good resistance to grease, organic solvents, oxygen, and good printability; but also has disadvantages: moisture absorption and moisture permeability, Poor heat sealing ability.
Second, the classification of food packaging bag material nylon film
At present, there are many nylon film grades on the market, such as nylon 6, nylon 66, nylon 11, nylon 12, copolymer nylon, etc., among which nylon 6 is the most used in food packaging bags. Like many films, nylon is also divided into BOPA, OPA, and PA according to the film formation method.
3. Application of nylon film material in food packaging bags
The nylon packaging bag that we often talk about is made of nylon film material and other films. Nylon film composite materials are often made into transparent vacuum bags such as cooking bags and high-temperature sterilization bags. Nylon packaging bags are widely used, but the advantages of nylon film materials in food packaging in different fields are slightly different:
1. Frozen food packaging, fancy is the excellent cold resistance of nylon film, high tensile strength can adapt to thermal expansion and contraction. Commonly used to pack seafood, fish balls, dumplings, dumplings, etc.
2. Fat and seasoning packaging bags and meat food packaging bags are made of nylon film materials, because grease and organic solvents are difficult to penetrate nylon film and will not be easily punctured. Such as seasoning packs in instant noodles, chicken thighs, chicken feet, etc.
3. Cooking food packaging bags, the fancy is that the nylon film material has good gas barrier properties, oil resistance, high temperature, and puncture; I think we see hot pot bottoms, tempeh, etc.
4. The difference between nylon film and other films
It is a little difficult to select nylon film from several transparent films and distinguish them from appearance and feel. We can put the film in warm water and then pick it up. The nylon film has the biggest change in hardness before and after. This method of differentiation utilizes the moisture absorption properties of nylon film, and nylon becomes softer after absorbing water.