When you are in high spirits and ready to open the food package, you can smell a pungent smell, even the food has a similar smell. Encounter this kind of situation, be no less than the feeling of being drenched in a bucket of water - depressed ah.
Why does food packing bag appear peculiar smell? Is there any way we can avoid this problem?
Let's first analyze the causes of this problem: food packaging bags will smell, the main reason is from its packaging materials. Of course, we should also carefully check whether it is really caused by the packaging materials. If so, the main reasons should be as follows:
(1) Improper control of printing process causes the organic solvents (alcohols, ketones, esters, benzene and other solvents) dissolving printing ink are not fully volatilized;
(2) Improper control of the composite process leads to insufficient volatilization of the organic solvent dissolving the adhesive when the packaging composite film is compounded with adhesive;
(3) The quality of raw materials is poor - the resin itself or the added small molecules with peculiar smell contain more;
(4) Poor quality of adhesives - adhesives used in the composite process produce harmful substances such as toluene diamine at high temperature.
So how do we solve it? Here are some suggestions:
1、 Pay attention to the monitoring of the hygienic performance indexes such as solvent residue, evaporation residue, toluene diamine content and potassium permanganate consumption.
2、 Select appropriate ink and adhesive (such as solvent-free ink), adjust the process parameters of volatilization and drying during printing and compounding.
Dongguan Beite packaging materials Co., Ltd. - located in Dongguan City, the world's manufacturing city, is a subsidiary of Beite packaging (China) Co., Ltd., with a plant area of 6000 square meters. It is a flexible packaging enterprise integrating R & D, production and sales. It has a complete set of domestic advanced production equipment, a scientific and humanized management system and a group of experienced technical personnel For backing, to provide customers with quality products and first-class service.
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.