With the continuous development of business, all kinds of packaging bags have swarmed out. Such as three-side sealed bags, zipper bags, stand-up bags, aluminum foil bags, flat bottom bags, etc. However, in the procurement of packaging bags, for cost savings, larger brand companies or companies that require the same type of packaging bags for a long time all have chosen to directly purchase packaging film roll and use automatic packaging machines to make them into bags. In fact, the difference on the work procedures between packaging film and packaging bags is the process - making bags.Therefore, in the procurement of automatic packaging roll film, easy-tear automatic packaging roll film, aluminum-plastic automatic packaging roll film, and food packaging film, what key points and matters should be paid attention to? Kolysen Packaging will give answers specifically.
1.What is the appropriate roll diameter for film roll, lamimated film,laminated film roll, laminated aluminum foil film roll?
The diameter of the packaging film is determined by the automatic packaging machine, which is generally controlled at 25cm or so.
2.What is the general heat sealing temperature of film roll, lamimated film,laminated film roll, laminated aluminum foil film roll?
The heat sealing temperature of the full automatic packaging film is also determined by the packaging machine. There are 90 degrees for the basic sealing temperature, and also the high temperature can be up to 200 degrees.
3.What is the best coefficient of friction scale for film roll, lamimated film,laminated film roll, laminated aluminum foil film roll?
The friction coefficient of the roll film determines the packaging speed. Theoretically, the smaller, the better. Generally between 0.2 and 0.3. It is recommended to control around 0.25. Of course, there are also some packaging machines requiring a friction coefficient higher than 0.5 since it will slip if the friction coefficient is small. Therefore, it is necessary to do trial test before decision.
4.What is the rules for the number of joints in each roll of film roll, lamimated film,laminated film roll, laminated aluminum foil film roll?
As per the intenational standard, 70% of the whole batch of film should be without joints, 15% are allowed with 1 joint, 10% are allowed with two joints, 5% are allowed with 2 joints. However, you can also directly require suppliers that the number of joints in each roll of film for the whole batch of film shall not exceed one and use the form of splicing to mark red or yellow tapes as the eye-catching symbols at the joint.
5.What are the requirements for the trimming on the both ends of film roll, lamimated film,laminated film roll, laminated aluminum foil film roll?
The trimming error of the roll film should be controlled within 1mm, otherwise it will be uneven, which will seriously affect the output.
6.What is the standard for the weight of each film roll, lamimated film,laminated film roll, laminated aluminum foil film roll?
The weight of each roll generally does not exceed 25KG, and should be controlled between 15KG~25kg as much as possible. It depends on the width of the roll film. The main consideration is to ensure easier transportation.
In conclusion, in the procurement of automatic packaging film, the supplier’ s qualifications and scale are the primary consideration. Food packaging film requires QS certificate, and pharmaceutical packaging film requires pharmaceutical package registration license.You should understand the performance of the full automatic packaging machine you have purchased. If you don’t know it well, it is suggested to ask the supplier of packaging film to come to your site to see this full automatic packaging machine. In the early stage, it is recommended to start with small batches of packaging film for trial test to see what problems exist then do improvement accordingly. Regarding to the supplier of the packaging film, the production environment and production process control also should be paid high attention to. There is a number on the inside of inner paper core, and each number is different to facilitate anti-tracing.
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