What problems will appear in the frozen food packaging bag produced by the manufacturer of inferior special-shaped bag
1. The cold resistance of frozen food can not meet the requirements, and the original performance of the material can not be maintained at a low temperature. The packaging material is relatively brittle, which makes the mechanical strength of the packaging material decrease, resulting in the rupture and cracking of the packaging bag, and can not meet the protection function of the contents.
2. The function of easy tear of packaging bag can not be effectively exerted. The tear strength is too high, which makes the bag hard to open, and the tear strength is too small, which leads to the decrease of mechanical properties of the packaging bag. Therefore, it is necessary to meet the humanized design of easy tearing of special-shaped bag packaging bag and complete the protection function of the product.
3. For the puncture performance of packaging bags, frozen foods are generally hard after freezing, especially fish and meat products, which contain bones and hard objects. During transportation and stacking, the extrusion of products can easily make the packaging bags wear out and damage the sealing properties of packaging bags. Therefore, frozen food has high requirements on the puncture property of packaging bags.
Packaging bag knowledge: special bag manufacturers introduce that self-supporting bags are basically divided into the following five types
1. Ordinary self-supporting bag: and self-supporting bag in general form, which adopts four edge sealing form and can not be re closed and repeatedly opened. This kind of self-supporting bag is generally used in the industrial supplies industry.
2. Self supporting bag with suction nozzle: the self-supporting bag with suction nozzle is more convenient for dumping or absorbing contents, and can be re closed and repeatedly opened, which can be considered as the combination of self-supporting bag and ordinary bottle mouth. This kind of self-supporting bag is generally used in the packaging of daily necessities. It is used to hold liquid, colloidal and semi-solid products such as beverage, shower gel, shampoo, tomato paste, edible oil, jelly, etc., such as the famous Xizhilang CICI, etc.
3. Self supporting bag with zipper: self supporting bag with zipper can also be re closed and repeatedly opened. Because the zipper is not closed and the sealing strength is limited, this form is not suitable for sealing liquid and volatile substances. According to the different ways of edge sealing, it can be divided into four edge sealing and three edge sealing. Four edge sealing refers to that there is a layer of ordinary edge sealing besides the zipper sealing when the product is delivered from the factory. When using, the ordinary edge sealing needs to be torn off first, and then the zipper is used to realize the repeated sealing. This method solves the problem that the zipper edge sealing strength is small and is not conducive to transportation. The three edge sealing is directly used as a zipper edge sealing, which is generally used to hold light products. Self supporting bags with zippers are generally used to pack some light solids, such as candy, biscuits, dried fruits, etc., but the self-supporting bags with four edges can also be used to pack heavy products such as rice and cat litter.
4. Mouth like self-supporting bag: the mouth like self-supporting bag combines the convenience of self-supporting bag with suction nozzle and the low-cost of ordinary self-supporting bag. The function of suction nozzle is realized by the shape of bag body itself. However, the mouth shaped self-supporting bag can not be sealed and opened repeatedly. Therefore, it is generally used in the packaging of liquid, colloidal and semi-solid products such as drinks and jelly.
5. Special shaped self-supporting bag: it refers to the new self-supporting bag of various shapes, such as waist closing design, bottom deformation design, handle design, etc. It is the main direction of value-added development of self-supporting bags. http://www.dgbpk.com/
Dongguan Beite packaging materials Co., Ltd
Dongguan special bag, plastic bag, plastic bag, plastic bag