Types Of Aluminium Foil Paper
In recent years, in addition to being highly sought after by the food-grade industry, aluminum foil bags have also received great attention in the pharmaceutical industry. This is because aluminum foil bags have very high performance characteristics: light-proof, good airtightness, not easy to break and leak, play a good role in preventing purification, extending shelf life, etc., but in fact, aluminum foil bags will also appear when heat-sealed For some problems, today the editor will explain several factors that affect the heat sealing of aluminum foil bags: production process, heat sealing time, raw and auxiliary materials, heat sealing temperature, adhesives, etc.
In terms of the production process of several factors that affect the heat sealing of aluminum foil bags, under the control of certain process parameters, the adhesive is coated on A thin film is formed on the surface of the original aluminum foil. The quality of the film will directly affect the heat seal strength of the product. The more important parameters include coating speed, drying tunnel segment temperature, shape, depth, number of lines, and the position of the doctor blade and the angle of the coating roller.The coating speed determines the time when the coating is dry in the drying tunnel. If the coating speed is too fast and the drying tunnel temperature is too high, the solvent on the surface of the coating film will evaporate too fast, which will constitute the residual solvent in the film. Affect the heat seal strength of the product and cause adhesion between product layers. The heat-sealing time, the heat-sealing time will also affect the heat-sealing strength of the product. Under normal circumstances, under the same heat sealing temperature and pressure, a longer heat sealing time can make the heat-sealed part more robust and perfect, and can better achieve the expected heat-sealing strength. However, the technological conditions of the modern high-speed pharmaceutical packaging machine cannot provide a long time for heat sealing. If the heat sealing time is too short, the adhesive layer and the PVC film will be insufficiently heat-sealed. For this reason, the national standard stipulates that the scientific heat-sealing time is 1s.
40 Micron Aluminium Foil Aviation aluminum foil lunch boxes and aluminum foil lunch boxes have a neat appearance and good thermal conductivity
