The importance of the sealability of pet food packaging bags

Pet food generally contains ingredients such as protein, fat, amino acids, minerals, crude fiber, vitamins, etc. These ingredients also provide good breeding conditions for microorganisms. Therefore, to ensure the nutritional value of pet food and extend the shelf life, it is necessary to inhibit the activity of microorganisms. The three elements that microorganisms depend on for survival: ambient temperature, oxygen and moisture. During the shelf life, the oxygen and moisture content in the packaging is more dependent on the integrity and barrier properties of the pet food packaging bag. Among them, the integrity of packaging has the most direct impact on shelf life.
      The more common pet food packaging on the market includes plastic flexible packaging, self-supporting zipper bags, composite plastic packaging, paper-plastic packaging, aluminum-plastic packaging and tinplate packaging cans. Regardless of the type of packaging, the integrity of the packaging is very important. If the package has holes or leaks, oxygen and water vapor will enter the package, causing the pet food to change in quality. However, the integrity of the packaging is likely to occur in the heat-sealed part of the packaging bag, the lid of the packaging tank, and other material butt joints.
      At present, the common pet food packaging on the market includes plastic flexible packaging, composite plastic packaging, octagonal sealing stand-up pouch, middle-sealed organ bag, paper-plastic packaging, aluminum-plastic packaging and tinplate packaging cans. The most commonly used is zipper self-standing composite plastic flexible packaging. And aluminum-plastic packaging. The use of a composite structure can effectively improve the overall force-receiving capacity and barrier properties of the packaging.
      If the peel strength is too low, it means that the composite quality is poor, and the packaging bag cannot well realize the quality expectation of multi-layer material dispersing force and jointly acting as barrier properties. The packaging is easy to break when dropped, and the barrier performance is lower than expected. The heat seal strength represents the strength of the package seal. If the heat-sealing strength is too low, it is easy to cause the seal to crack and the pet food to be scattered during the handling process, causing the pet food to come into contact with oxygen and moisture in the air, and the food is prone to mildew.
      From this point of view, the overall sealing of pet food packaging bags is very important. If the packaging is not complete, it is undoubtedly that pet food will easily become moldy and lose its nutrients under the action of oxygen and moisture in the air. When consumers buy food for their pets, they must carefully check whether the pet food packaging bag is complete and has no leaks.