What basic qualities should food packaging bags have

　　Food packaging film bags and pharmaceutical packaging film bags are the strictests in many packaging bags, because most of them are eaten by tearing the packaging bag directly. If the packaging bag is unqualified, the shelf life becomes shorter, causing the product to deteriorate to the human body. So what do they have to have to have to be considered a safe and qualified food packaging bag?

　　1. Obstructability

　　Obstruction of water vapor and oxygen:

　　Verify through the amount of water vapor and oxygen through the amount of oxygen, to prevent the phenomenon of drug moisture, oxidation and deterioration due to large amounts and poor obstruction, and poor obstruction.

　　Kneading:

　　For aluminum -containing composite membranes, such as aluminum -plated membranes, compare and verify by rubbing before and post -oxygen through quantity tests. Essence

　　2. Physical mechanical performance

　　Uniformity of thickness:

　　Verification by testing the thickness of the packaging material, the uniformity of the thickness of the packaging material is the basis for ensuring its good performance.

　　Smooth:

　　Through the verification of the friction coefficient test, if the friction coefficient of the curl film is not suitable, it is large or small, it is easy to cause poor opening of the bag material.

　　Thermal seal effect:

　　Verifying the heat -intensity test is mainly aimed at the test of the finished product packaging to prevent the packaging materials from suffering from poor heat or excessive heat seal, and problems such as the heat seal or the root fault of the heat seal occurred.

　　Sealing effect:

　　Verify the sealing performance test of the packaging bag. It is mainly aimed at the test items of the finished product packaging. Find the parts where the packaging bag is prone to air leakage to prevent the drug from moisture or oxidation.

　　Resistance:

　　Verify the pressure resistance of the packaging bag to prevent the packaging bag from being stacked or being squeezed by other external forces to occur.

　　Performance resistance:

　　Verify the anti -drop test of the packaging bag to prevent the finished packaging of the medicine from rupture when the finished packaging of the medicine is broken.

　　3. Sanitary performance

　　Solvent residue:

　　Verify the solvent residual test. If the content of organic solvents remaining in the bag is high, it is easy to gradually migrate to the medicine during the contact with the medicine to pollute the drug.

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