The puncture resistance of self-supporting bag should be considered as the key point of packaging material combination
Food vacuum packaging design. If the net content or volume of the contents exceeds the bearing range of the soft packaging materials used, in the process of transportation or sales circulation, a little external force will lead to bag breakage and cracking. Generally, the thickness of the material shall not be less than 50 μ m as the heat sealing layer of vacuum packaging bag.
The quality of food vacuum packaging materials. The quality problems of packaging materials lead to the sealing cracking of the finished product packaging, which are generally concentrated in the following aspects: 1) the physical and mechanical properties of food packaging, such as breaking force and elongation, puncture resistance, pendulum impact resistance, peel strength, etc., can be used to comprehensively judge whether the physical and mechanical properties such as toughness, puncture resistance and impact resistance of packaged bags meet the packaging and storage requirements Requirements of stacking and transportation process. (related to the contents, the size of the package, the transportation route and the packaging form) ② the tightness of the food packaging, such as the burst pressure test, can determine the location where the bag is broken and the part with weak mechanical strength. For example, the heat sealing strength test can judge whether the heat sealing strength meets the requirements of food contents, and determine the parts with poor heat sealing and the uniformity of heat sealing effect. For example, the vacuum packaging of chicken feet is damaged because the bones of some broken claws are cut very sharp when the chicken feet are cut into pieces. In addition, when the chicken feet are boiled, the meat skin shrinks, so the bones are exposed and the bag is easy to be punctured during transportation.
There are also some reasons: what is the quality of the vacuum self-supporting bag packaging bag? Is the thickness of the vacuum packaging bag appropriate? Is the size of the vacuum packaging bag appropriate? Is the size of the outer box appropriate? Most of the air leakage of the vacuum packaging bag is caused by the existence of pinholes, which can not be found immediately, and sometimes it does not necessarily appear after nearly 10 days of insulation. Machine problem: sometimes the air leakage of the vacuum bag is not necessarily the problem of the bag, but also the material of the vacuum bag. Is it possible that the bag made of this material can not use the machine you are using now.
Therefore, the puncture resistance of self-supporting bag should be considered as the key point of packaging material combination. The leakage and sealing strength tester can not only detect the maximum breaking force of the flexible packaging bag, but also test the rupture time of the packaging bag by setting the applied pressure. The stacking structure can be designed according to the test data, and the parameters of the heat sealing process can be further adjusted to improve the packaging effect, or the problems existing in the packaging structure can be analyzed according to the location of the rupture of the flexible packaging bag 。 http://www.ycritai.cn/
Dongguan Beite packaging materials Co., Ltd
Dongguan special bag, plastic bag, plastic bag, plastic bag