As the business continues to develop, a variety of bags are swarming out. Such as three-side sealing bag, zipper bag, stand-up bag, aluminum foil bag, flat bottom bag, etc. However, when purchasing bags, it is divided into cost-saving. Larger brand companies or companies that need the same kind of packaging bags for a long time have chosen to directly purchase packaging film and use fully automatic packaging machines to make them into bags. The process of packaging the bag is the process of making this bag. What are the key points and considerations for purchasing automatic packaging film? Please look down, IPAK packaging for your specific answer 1. What is the diameter of the roll film, composite film, composite roll film, and aluminum-plastic composite film? Answer: The diameter of the packaging film is determined according to the active packaging machine. The diameter is generally controlled at about 25cm. 2. What is the temperature between the film, the composite film, the composite film, and the aluminum-plastic composite film? A: The heat sealing temperature of the fully active packaging film is also determined according to the packaging machine. It has a 90 degree seal and a high temperature of 200 degrees. 3. What is the best coefficient of friction for the film, composite film, composite film and aluminum-plastic composite film? A: The coefficient of friction of the film determines the speed of the package. In theory, the smaller the better, generally between 0.2 and 0.3, and the control is about 0.25. Of course, some packaging machines require a friction coefficient higher than 0.5 because the friction coefficient is small and slips, so it is necessary to try to determine. 4. What is the number of joints per roll, composite film, composite roll film and aluminum-plastic composite film? Answer: The national standard requirement is that the whole batch of film is 70% without joints, 15% promises one joint, 10% promises to have one joint, 5% promises to have more than 2 joints, but you can also directly request the supplier. The number of joints per roll of film shall not exceed one. The splicing form is used, and the joints are made of red or yellow tape as a symbol. 5, roll film, composite film, composite film, aluminum-plastic composite film trimming degree is how to ask? Answer: The trimming error of the film needs to be controlled within 1mm, otherwise it will be uneven, which will seriously affect the production power. 6. What are the requirements for the printing quality of roll film, composite film, composite roll film and aluminum-plastic composite film? A: The demand for film film prints is: knife line, plate stain, color ban, knife line, version of the naked eye is not a standard, printing color advocates that you and the supplier sign up and down errors, you can accept the scale. The overprint error is more than 0.02mm, and the plate roller is looking for a domestic first-class plate making company. Try to find a supplier with 9 color printing machines to print. above all: Packing and shipping, must be bulky + tray + winding film + corner protector + cover + support, if you choose to transport in bulk, the following problems may occur: because the barbaric transport of the logistics delivery company will cause the carton to be damaged, the film tube of the film is deformed The surface of the film is dirty, especially if it is infected with bacteria that cannot be controlled.