Abstract : Food packaging quality control is an important guarantee for the quality of food shelf life. By controlling the quality of food packaging to prevent product quality problems caused by unqualified packaging quality, Cell Theo is an international provider of testing instruments and testing services from a professional perspective. Introduced the technology, methods and related equipment for food packaging and packaging materials testing.
Key words: food packaging , quality control, testing equipment, sealing performance , peel strength , friction coefficient , heat seal strength , sealing performance

  In recent years, the awareness of food safety among the whole people has increased. Although the state has increased supervision over the food industry, the rapid development of the domestic food industry is also facing the dissatisfaction of consumption to quality, and analyzing some quality problems from a professional perspective. It comes from the food itself, but there are many quality problems caused by the quality of the food packaging is not up to standard. Because there is no industry or national standard, which leads to the food industry not paying enough attention to the quality of packaging, it leads to a series of quality problems.

First, the status quo of food packaging quality control

   In order to let more regional consumers taste the food in different places, the packaging also provides convenience for the protection of food. Although I have relevant standards for food, there is no corresponding regulation on food packaging. China's quality control of yao packaging and packaging materials has been standardized, and it should have important reference for food packaging quality control. The food industry should learn from the yao product industry's requirements for quality control of packaging materials for packaging quality control. Cell Theo is to introduce more food-related enterprises to understand the quality control requirements, and introduce the main points of food packaging quality control and testing instruments.

Second, food packaging quality control requirements and instrument introduction

  Packaging has an important impact on the food warranty period, and food production enterprises should control the quality of packaging to “inspect the packaging materials”. In-plant inspection includes testing the tensile strength and elongation at break, surface slip performance, heat seal strength, and peel strength of the composite film to ensure that the purchased materials meet the packaging and production requirements. In addition, the finished product packaging should also pay attention to sealing performance and heat sealing strength testing, so that the company can quickly control the quality from the packaging point of view, and eliminate the accident control caused by the packaging quality problem in the bud.

1,      Food packaging and material strength testing items and instruments

Strength is a comprehensive indicator, which is a comprehensive reflection of the tensile strength of the packaging material, the peel strength of the composite film, the heat seal strength, the tear strength, and the puncture resistance. Tensile strength refers to the maximum stress value of the material before it is broken. The detection can effectively solve the damage and breakage of the package caused by the external force due to insufficient mechanical strength of the selected packaging material. Peel strength is also referred to as composite strength or composite fastness. It is used to detect the bond strength between layers in a composite film. If the bond strength is too low, it is easy to cause leakage during interlayer separation during packaging. problem. The heat seal strength is the strength of the seal. During the storage and transportation of the product, once the heat seal strength is too low, the heat seal is cracked and the contents are leaked.   Puncture resistance is an indicator of the ability of a package to resist the penetration of hard objects. For the above-mentioned test items, it is necessary to test the TST-01 series electronic tensile testing machine produced by Cell Theo. This type of instrument has the characteristics of strong professionalism and multi-purpose use. One instrument can complete the above-mentioned tests and is the preferred instrument for food companies. .

2,      Friction coefficient detection and instrument introduction

The friction coefficient test, also known as the slip performance test, is an important indicator for evaluating the slip performance of the inside and outside of the food packaging material, and can be used to evaluate the applicable performance of the machine package. It is tested to ensure that the packaging material has good openness filling properties or can be smoothly conveyed and packaged on a high-speed production line. It needs to be tested by the COF-01 , COF-01A , COF-03 and other friction coefficient meters produced by Cell Theo.

3 , food sealing performance testing

   Sealing performance is an important indicator for testing after the food is off the line to prevent quality accidents caused by poor sealing of the package.   Sealability refers to the property of the package to prevent other substances from entering or the contents from escaping. There are two methods for commonly used detection methods.

( 1 ) The LT-01 , LT-02 , LT-03 and other types of seal testers produced by Cell Theo are tested by the principle of water decompression method. The test procedure is as follows: put a proper amount of distilled water in the vacuum tank, The sample is placed in the vacuum tank and built into the lower side of the pressure plate to completely immerse the package into the water; then the vacuum pressure and time of the test are set, the test is started, the vacuum chamber is evacuated, and the sample immersed in water is subjected to internal and external pressure difference, and the package is observed. Internal gas escape condition to determine the sealing performance of the sample;

( 2 ) In-package pressurization method: LSST-01 leak and seal strength tester is tested by positive pressure method. By applying pressure to the inside of the package, the pressure resistance, sealing degree and leakage index of the food package are detected, thereby achieving the purpose of detecting the integrity and sealing strength.

     In summary, the scientific control and testing methods will provide effective help to ensure the reliability of all aspects of food packaging. I hope that the above detection methods and methods provided by Cell Theo will adjust the actual production of health care products. The production process and the improvement of product quality provide some help.