Food packaging film bags, drug packaging film bags in many packaging bags are the most stringent, because most of them are directly tear open the packaging bag for consumption. If the packaging bag is unqualified, the original shelf life will be shortened, resulting in product deterioration and great harm to human body. So what must they have? What properties must they have to be considered as a safe and qualified food packaging bag?

1. Barrier
Resistance to water vapor and oxygen:
The water vapor permeability and oxygen permeability tests were carried out to prevent moisture and oxidative deterioration of the packaging materials due to large permeability and poor barrier property.
Rubbing resistance:
For the composite film containing aluminum, such as aluminum coating, the oxygen permeability test before and after kneading is compared and verified. If the rubbing resistance is poor, it is easy to have creases, pinholes and other phenomena, which will reduce the barrier property of the packaging material.
2. Physical and mechanical properties
Uniformity of thickness:
Through testing the thickness of the packaging material to verify, the uniformity of the coating thickness is the basis to ensure its good performance.
Smoothness:
It is verified by friction coefficient test that if the friction coefficient of roll film is not suitable, too large or too small, it is easy to cause poor opening of package material, and slip or unsmooth unwinding during bag making.
Heat sealing effect:
Through the heat sealing strength test, it is mainly aimed at the detection of finished drug packaging, so as to prevent the packaging materials from leaking at the heat sealing position or fracture of the heat sealing root due to poor or excessive heat sealing.
Sealing effect:
Through the test of the sealing performance of the packaging bag for verification, mainly for the testing items of the finished drug packaging, to find the parts of the packaging bag prone to air leakage, so as to prevent the drugs from being affected by moisture or oxidation.
Withstand voltage performance:
Through the test of the pressure resistance of the packaging bag, it can prevent the packaging bag from breaking or leaking when it is stacked or squeezed by other external forces.
Drop resistance:
The anti drop test of the packaging bag was used to verify the test, so as to prevent the packaging of finished drugs from cracking when falling.
3. Hygienic performance
Solvent residue:
Through the solvent residue test to verify, if the content of residual organic solvent in the packaging material is high, it is easy to gradually migrate to the drug and pollute the drug in the process of contact with the drug.
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.