With the improvement of people's living standards, people have higher and higher requirements for food quality. As the direct outer packaging of food protection, the safety of food bags has attracted more and more attention.
Food bags not only require beautiful appearance, easy to carry, but also improve the quality to ensure food safety. This puts forward higher requirements on the performance of food packaging materials, whether they are green or not, and the production design and production process of packaging.
Now we use plastic food bags, mainly including polyester, polyethylene, polypropylene, polystyrene, polyvinyl chloride, etc. among them, polyethylene and polypropylene are safe plastics, which can be used to hold food. Most PVC bags are toxic and can't package food. Because the unpolymerized vinyl chloride in PVC resin is toxic to human body. Moreover, in the process of PVC resin processing into plastic bags, some plasticizers, pigments and other toxic auxiliary materials should be added. The main component of plastic stabilizer is lead stearate, which is also toxic. This kind of lead salt is very easy to separate out, once it enters the human body, it will cause accumulated lead poisoning.
So, how to identify whether plastic food bags are toxic? Specializing in the production of food packaging bags Dongguan Yuli packaging supplies Co., Ltd. teaches you the following several detection methods.
Sensory test method: non toxic plastic bags are milky white, translucent, or colorless and transparent, flexible, with a sense of lubrication when touching, and the surface seems to have wax; the color of toxic plastic bags is turbid or light yellow, and the handle is sticky.
Water detection method: put the plastic bag in the water and press it into the bottom of the water. The proportion of the non-toxic plastic bag is small, and it can float out of the water surface. The toxic plastic bag ratio is large and sinks.
Shaking detection method: hold one end of the plastic bag by hand and shake it hard, and the one with crisp sound is non-toxic; the one with dull sound is toxic.
Fire detection method: the non-toxic polyethylene plastic bag is inflammable, the flame is blue and the upper end is yellow. When burning, it drops like candle tears, with stone cured flavor and less smoke; the toxic PVC plastic bag is not flammable and extinguishes immediately after leaving the fire. The flame is yellow and the bottom is green. It can soften and draw silk and emit the irritating smell of hydrochloric acid.
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.