Posts tagged functions

Abstract: This article is based on the operational characteristics and functions of flexible packaging materials.
Keywords: high polymers, flexible packaging, physical properties, chemical properties, and test The application of polymer materials has eked out a shortage in the past in the form of packages, weight, complexity and function that is only in the wide application of polymer materials in the fields of foodstuffs, medicines, etc. In addition, the customer is the nature of polymer materials are possible, packaging structure according to the characteristics of internal content and design intent of designers. Referring documents show that at present, domestic plastic packaging (including shipping, tool) requires about 30% of food packaging in an escalating trend, with growth faster than the packaging paper food. Although national legislation has been placed on the quality of packaging materials has increased in recent years, the effort of packing food in its security problems and hidden in the packaging quality. Therefore, from this year to cover The core functions of the modern packaging of the three aspects of protection, comfort and promotion. Before the arrival of the hands of the consumer packaging of the finished product must be in the process of loading and unloading, transportation, storage, display and etc, where many possible factors, the destruction of the content internally, is in one of the links and where are the protective functions of packaging is proved that the injury prevention in terms of quantity and quality of products. The practical function refers to fill, transport, loading and unloading, piling, openness and etc., which have certain requirements on the properties of packaging materials. For example, a light, open and complex mechanical properties of materials is required. To facilitate the functioning of the system is implemented mainly through decoration and design with colors as reasonable and fair, the grounds and the model. This approach builds on itself, to a large extent the shape, color, texture, transparency, brightness, print compatible and so on. For packing food, especially flexible packaging, plastic film must have some physical and chemical functions on the principle above. The physical properties of the rule contains essentially mechanical properties, thermal behavior, optical properties, barrier properties, which called the routine physical properties, if the barrier property may be excluded. The indices are based on chemical properties of dry residue, the consumption of potassium permanganate, heavy metals and organic solvents and residues must be tested with chemical or gas chromatography. This article will focus on the routine testing of physical properties of materials. 2 The routine physical property testing of packaging materials As the basis of ensuring quality, testing routine physical property is referred to the loss of packaging, before the pre-defined functions are to prevent the production of answers. Escape Package for this event will be the failure of all protective functions of packaging materials therefore, even if particular functional materials or materials will be accepted at better ways of chemicals. Routine testing includes testing mechanical properties, thermal property testing and test the optical property. In addition, some application-specific requirements of the flammability of occasions, electrical properties and dielectric strength. Therefore, the test samples of materials according to the application package needed to be decided. As for the flexible packaging manufacturers generally, the demand for the mechanical properties of materials at the most stringent test. It includes the line performance, the performance curve, the impact on performance, cutting performance, the performance of friction, heat seal, etc. Each service can lead and unskilled jobs in the break fee or failure production. Hardware heatsealability Sun contains two aspects: Hot Tack-tested, while the sealing part is still hot (not cool even at room temperature) and tensile tested after sealing part is a stable state cooled. Thermosealing package is widely used in the fields of chemicals per day, food and medications. The filling is usually was stopped by the removal of products in the package from a certain height, the strong impact on the package below. If packet can not resist bottom, the destructive force of the entire filling process, it is cracked. To take effect, the rate of packet failure, the tactical control hot (tested at the heat sealing layer (seal) is not completely cooled) is pleased to greater concern. The majority of container products during transport are stacked. If the internal fluid levels and air form of packaging is regulated acceptance, all appears broken, if the tensile strength of the packaging does not bear the external pressure. Therefore, there are certain requirements for the sealing part after it has completely cooled heatsealability. includes thermal thermal stability, linear elasticity, the test and low temperature, etc. under test the thermal stability and low temperatures draw the most attention to the flexible packaging industry. The thermal contraction of the matter is one of the indices of the thermal property that later one of the main test of the film contraction. optical property is an important index, especially in food packaging light-sensitive. The test items mainly include brightness and density of fog. 3 Influencing test test items Basically routine physical can be performed with instruments measuring appropriate. In a single element, the test methods are not limited to one. The test environment, the sample size and treatment will affect test results. Full view, the most important factors are the test environment, pre-treatment and test methods adopted. can impose a direct influence on the result. For example, in several important changes in the temperature coefficient of friction. Humidity can also affect certain polymers, particularly polymers high polarized. The time and conditions of pretreatment affects test results, which mainly results from the discordance of environmental sample preparation and incomplete removal of internal stresses. comparison test should be performed in the same environment of pre-treatment and treatment duration. There is no comparison between the results obtained by different methods. Comparison of material properties should be based on the premise of the same test conditions (environment and moisture are carried speed test). For household packaging industry flexible, it is an effective way to increase the comparability of data through the purchase of test equipment to improve the national standard fully compliant. 4. Labthink routine laboratory engaged in the business of providing routine physical property testing for customers and the introduction of routine testing instruments Labthink. This laboratory is equipped with self-developed instruments, such as equipment ownership mechanical testing, thermal equipment with proprietary test, test equipment and optical property testing equipment to quality oil for routine testing of the property of flexible materials. flexible packaging manufacturers to decide whether the properties of materials can meet the requirements of the application, the laboratory offers comprehensive evaluation of material properties. Testing equipment Labthink can perform routine laboratory tests routine physical property (testing barrier property is excluded and laboratory Labthink barrier properties can be completed) materials in the national standards. Labthink Instruments Co., Ltd. No. 144 Wuyingshan Road, Jinan 250031, China Tracy Bao info @ labthink. Tel: 0086 531 85061153 Fax: 0086 531 85812140