The commodity standards required for vacuum food packaging bags are significantly higher than those for ordinary industrial commodities. Vacuum food packaging bags are a common packaging method in plastic flexible packaging. Compared with ordinary plastic packaging bags, the advantages in packaging performance, environmental protection performance, beauty and other aspects are obvious. For vacuum packaging bags, the worrying problem is that after being placed for a period of time, the vacuum packaging bags will expand and lose the meaning of food packaging bags.
The packaging bag material is unqualified: nylon and polyester can be used as raw materials for vacuum packaging bags. The difference is that nylon has better barrier properties than polyester. When customizing your vacuum bag, you can consider whether you have chosen the wrong material.
Incomplete disinfection during use: If there is no problem with the material of the food packaging bag, you can consider whether the disinfection is incomplete and whether the bacteria in the bag are multiplying rapidly. This phenomenon usually occurs in vacuum packaging of meat products, and the inspection method is very simple. Put an appropriate amount of rice in this bag (rice usually does not produce gas bacteria), vacuum it and leave it for half a month.
If the bag does not expand, a vacuum bag is used. If the sterilization process is not completed, the sterilization process can be adjusted at this time; if the above problems are solved, if the vacuum bag is used correctly, the bag will not expand.
What products are suitable for use with tear film for packaging bags?
★ What is easy-tear film?
“Easy to tear” and “easy to tear” are often confused with packaging films. In fact, the so-called “easy to tear” means that a piece of paper can be torn from the middle, and the cracks are straight. The easily detachable film opens from the surface along a heated lid of two layers of film. It is conceivable that these two films are processed by technology. The commonly used easy-tear packaging on the market is easy-to-roll film. The full name of easy roll film is thermoforming, stretch and tear film. We are familiar with the packaging of stewed eggs.
★ Features of easy tearing film
The characteristics of the easy-tear film are that it is easy to seal and easy to open. Unlike regular plastic, the seal is tight and requires a lot of effort to open. It is very unfriendly to the elderly and children with insufficient physical strength, and the contents inside are also prone to spilling. The easy-tear film is easy to tear during the opening process, and the sealing area tears smoothly and neatly, which can better protect the internal products and avoid waste.
Some friends are worried about the sealing performance of easy-peel film products, but after many experiments, they found that easy-peel film has excellent sealing performance, corrosion resistance, oxidation resistance, acid hydrolysis resistance, long shelf life, and is not affected by bad weather.
At the same time, due to the characteristics of the material, the printing effect of the easy-to-tear film is very beautiful, the hair color is clear and bright, so the appearance of the packaged product is very good, and the opening temperature is very low. Low n-hexane precipitation is ideal for high-speed automated packaging.
★ Apply easy-tear film
Cover film packaging and products packaged in cover films, such as jelly and pasta, often use films that tear easily. Because lamination is different from three-side sealing, four-side sealing and other packaging bags, the upward opening method and narrow edges make it harder to find the focus and harder to open composite film packaging products. So use easy-to-tear film.
Ready-to-eat food tear-off films are easy to use and carry, and are widely used in food, including braised products, snacks, seasoning packets, solid beverages and other foods, among which the majority are easy-to-tear films.
Products for the elderly. The physical strength of the elderly is generally poor and it is difficult to tear products with high heat seal strength. They can only be opened with scissors and other tools. Easy-to-tear film packaging does not have this problem, and the elderly can open it easily and well. Satisfy the sense of accomplishment for the elderly. Packaging bag manufacturers recommend that the elderly use protein powder. Health products, etc. should be easy to peel off.
