Xiangjie Instrument Analysis of Diaphragm R...

In order to facilitate the enterprises to better control the quality index of cigarette packaging film and to understand the detection method, we will briefly introduce the detection indexes and detection methods of cigarette packaging film in light of the needs of related production companies, so as to be able to use cigarette packaging. Membrane and cigarette manufacturers are helpful.

Smoke packaging film thickness Smoke packaging film thickness is the basic indicator for laboratory testing of film performance. The uneven thickness will not only affect the tensile strength and barrier properties of the smoke film, but also affect the subsequent processing of the smoke film. The thicker the smoke film, the better the performance of the machine and the higher the stiffness. The package out of the cigarette package has a good visual aesthetic appearance, but the cost is high. In order to seek the balance of control, a high-precision thickness gauge is required. The thickness gauge is a laboratory thickness gauge with an accuracy of 0.1um. When carrying out the thickness test, it must be noted that in addition to measuring the vertical and horizontal thickness, the deviation must be controlled, and it is generally controlled within 3%. It is also very important to measure the edge thickness of the film.

Tobacco packaging film tensile strength and elongation, elastic modulus cigarette packs require high tensile strength of the cigarette packaging film, which will reduce the film as much as possible in the packaging process "wrapped" phenomenon. It is generally required that the longitudinal direction is greater than 140 N/mm2 and the transverse direction is greater than 220 N/mm2. The elongation at break test is used for the analysis of the ease of cutting of the film. The cigarette pack industry differs from other industries in that it is not that the higher the elongation at break, the better. The cigarette pack industry generally requires the control to be below 200% in the longitudinal direction and below 80% in the horizontal direction. This makes it easier to cut off the machine and increase the production process. Patency. In the general industry, these two indicators are mainly tested, but with the more specific requirements for the stiffening of the smoke film and the ease of cutting due to high-speed production, there are currently requirements for the detection of elastic moduli. XJ830 diaphragm Tensile testing machine is a professional tensile testing machine for film testing, and it also has a fixed elastic modulus detection function. The elastic modulus is not easy to be too small. Otherwise, the film will be soft and have poor rigidity. It will also lead to poor cutting and running, and may even lead to bulking and film clogging. In general, the smoke film requires an elastic modulus of more than 2000N/mm2. However, when testing the elastic modulus, we must pay attention to the test conditions. If the test temperature, the data will have a larger change (the higher the temperature, the lower the elastic modulus), so the test conditions must be specified.

Smoke packaging film scratch resistance (wear resistance) Now the industry's requirements for film scratch resistance is more and more stringent, bad scratch resistance of cigarette packs will greatly affect the appearance, wear resistance of the main detection Considered from two aspects: First, high-speed packaging production process in the film surface and the machine's rapid contact and friction will form scratches on the surface of the product, and second, in the product transport process, the film surface and the box or other surface rub each other and produce rubbing Flower phenomenon. However, there are no national or industrial standards in the industry that can be used for reference. The abrasion resistance tester is combined with the current industry to carry out inspections. It basically refers to the method of testing the abrasion resistance of printing ink layers in the GB7706 standard, and can be tested with a friction testing machine. Use a clean offset paper with a width of 50mm and 80g/m2 and fix it on the load weight of the friction tester. Cut the smoke film to a certain size and install it on the friction table. Set the number of frictions (various companies perform differently) and start the test. After the test, check the scratches.

In a word, there are many testing items for cigarette packaging films. Here are just a few brief introductions to the inspection projects. We hope to help cigarette packaging films and cigarette manufacturing companies.

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