With the continuous development of Commerce, all kinds of packaging bags are flocking out. Such as three side sealing bag, zipper bag, self-supporting bag, aluminum foil bag, flat bottom bag, etc. However, in order to save cost when purchasing packaging bags, larger brand companies or companies that need the same kind of packaging bags for a long time all choose to purchase packaging roll films directly and use automatic packaging machines to make bags. In fact, the process of packaging film and packaging bags is the same process of bag making.

So in the purchase of automatic packaging film, easy to tear automatic packaging roll film, aluminum plastic automatic packaging film, food automatic packaging film, what are the key points and matters needing attention? Please look down and make up for your specific answer

1. What is the appropriate diameter of roll film, composite film, composite roll film and aluminum plastic composite film?
A: the diameter of the packaging film is determined according to the active packaging machine. Generally, the diameter is controlled at about 25cm.
2. What is the heat sealing temperature of roll film, composite film, composite roll film and aluminum plastic composite film?
A: the heat sealing temperature of the full active packaging film is also determined by the packaging machine. There are 90 degrees starting sealing, and the high temperature is 200 degrees.
3. In what scale is the best friction coefficient of roll film, composite film, composite roll film and aluminum plastic composite film?
A: the friction coefficient of the film determines the speed of packaging. Theoretically, the smaller the better, it is generally between 0.2 and 0.3. It is suggested that the control should be around 0.25. Of course, some packaging machines require a friction coefficient higher than 0.5, because the friction coefficient will slip, so it is necessary to try to determine.
4. What is the regular number of joints per roll of film, composite film, composite roll film and aluminum plastic composite film?
A: the national standard of the joint requires that 70% of the whole batch of films have no joint, 15% promise to have one joint, 10% promise to have one joint, and 5% promise to have more than two joints. However, you can also directly require the supplier to not exceed 1 joint in each roll of film. And choose the form of splicing, the joint with red or yellow tape as a striking symbol.
5. What is the requirement of trimming evenness of roll film, composite film, composite roll film and aluminum plastic composite film?
Answer: roll film cutting error requires control within 1 mm, otherwise the good and bad will be intermingled, seriously affecting the production power.
6. What are the printing quality requirements of roll film, composite film, composite roll film and aluminum plastic composite film?
A: what we need to pay attention to is that the knife line, plate stain and register are forbidden. If the knife line and plate stain are not visible to the naked eye, it is the standard. The printing color requires that you and the supplier sign up and down errors, and then you can accept the scale. If the overprint error is greater than 0.02mm, the plate roller should find the first-class plate making company in China, and try to find the supplier with 10 color printing machines to print.
7. Roll film, composite film, composite roll film, aluminum plastic composite film surface of the crease requirements is what attitude?
Answer: Dead wrinkle is not allowed, live wrinkle less than 20 cm width of roll film, 1 square meter scale is not allowed to exceed 1, crease length does not exceed 30 cm. The reason why creases appear is the control of compound tension.
8. Roll film, composite film, composite roll film, aluminum plastic composite film whether there is odor, solvent residue is overspend, and if it is regular?
Answer: because printing solvent (butyl ester) and glue (polyurethane) choose ethyl acetate evaporation is not clean, can refer to the enterprise specification.
9. Roll film, composite film, composite roll film, aluminum plastic composite film, how to determine the weight of each roll?
A: the weight of each roll is generally no more than 25kg. Try to control it at 15kg ~ 25kg, depending on the width of the roll film, because the factories are generally female workers, which is convenient for transfer.
To sum up, the complaint is as follows:
When purchasing automatic packaging roll film
1. It must depend on the supplier's qualification and enterprise scale. Food packaging film needs QS certificate, and drug packaging film needs drug package registration license.
2. Understand the performance of the full active packaging machine that you have purchased. If you don't know much about it, you are advised to ask the supplier of packaging film to come to your site to see the full active packaging machine. In the early stage, you must purchase and test the machine in small quantities to see what problems exist in the supplied packaging film testing film, so as to facilitate the subsequent improvement The production environment and production process control are also what you need to pay attention to. In regular enterprises, the inner wall of each roll of paper tube has a number, and each number is different, so as to facilitate reverse traceability;
3. There are also packaging and transportation, must be stuffy + pallet + winding film + corner guard + cover plate + underpinning. If bulk transportation is selected, the following problems may appear: because the crude transportation of logistics transportation company will lead to the damage of cartons, the deformation of the paper tube of roll film, the dirt on the surface of roll film, especially the uncontrollable bacteria. I wish you all good luck in the process of purchasing. I hope the above can help us.
Dongguan Beite packaging materials Co., Ltd. is a large-scale company specializing in the production of food grade composite packaging. It is a professional manufacturer of composite packaging bags. It uses new equipment to produce packaging bags and roll films, providing comprehensive, environmental protection and safety packaging services for the market. The company produces composite bags, roll film, fruit bags, aluminum foil bags, suction mouth bags, self-supporting bags, zipper bags, anti-static bags, special-shaped bags, etc., which are suitable for the internal and external packaging of food, daily chemicals, electronics, toys, medicine, cosmetics, industrial products and other industries. We uphold the integrity of cooperation, good quality, good service business philosophy, won the industry's approval, products sold to all over the world; welcome friends from all walks of life to inquire, visit our factory to investigate guidance and business negotiations.