Aluminium Foil Jumbo Roll 30 Micron for Hookah Shisha
Pinholes are the main defect of aluminum foil. In the raw materials, the size of the dust on the roll, the rolling oil, and even the dust of about 6um in the air entering the roll gap will cause pinholes. Therefore, 6um aluminum foil cannot be without pinholes. It can only be evaluated by quantity and size. Due to the improvement of aluminum foil rolling conditions, especially the effective filtration of dust and rolling oil and the convenient roll change system, the number of aluminum foil pinholes is increasingly dependent on the metallurgical quality and processing defects of the raw materials. Hard to find When it comes to the correspondence between raw material defects and original defects, it is generally believed that pinholes are mainly related to gas content, inclusions, compounds and component segregation. Taking effective aluminum liquid purification, filtration and grain refinement can help reduce pinholes. Of course, the use of alloying and other means to improve the hardening characteristics of the material also helps to reduce pinholes. The pinholes of 6um aluminum foil rolled with high-quality hot-rolling materials can be less than 100/m. When the cast-rolling material is well purified, 6um aluminum foil pinholes are less than 200 square meters. In the aluminum foil rolling process, there are many factors that cause pinholes, even catastrophic. Effective filtration of rolling oil, short-term roll change and dust prevention measures are all necessary conditions to reduce pinholes in aluminum foil. The use of high rolling force and low tension rolling can also help reduce pinholes
Due to the serious poor shape of aluminum foil for flexible packaging, wrinkles will be formed when the aluminum foil is rolled or unfolded. The essence is that the tension is not enough to make the foil surface flat. For devices with a tensile force of 20MPa, the shape of the foil surface should not be greater than 30l. When it is more than 30l, wrinkles will inevitably occur. Because aluminum foil is often subject to greater tension during the rolling process than subsequent processing, some aluminum foils only show poor shape during the rolling process, including incorrect roll grinding, incorrect roll shape, poor shape of incoming materials, and shape adjustment Incorrect.
Aluminium Foil Roll Jumbo 30 Micron for Hookah Shisha It is the traditional culture of the Arab nation with a long history
