Source：Link Testing Instruments Co.,Ltd.
What is the reason for the bulging bag of flavored fish packaged in aluminum-plastic composite film?
Quality issues:
Flavored fish products packaged in aluminum-plastic composite film will swell after being stored for a period of time.
Cause Analysis:
--Packaging material
l Poor barrier property - The level of oxygen barrier properties of packaging materials is an important factor related to whether the product is prone to bulging. If the barrier property of the package to oxygen is poor, that is, the oxygen transmission rate is low, the flavored fish inside the package is likely to be exposed to a sufficient amount of oxygen, causing the growth and reproduction of the residual microorganisms carried by it, and then the problem of bag swelling occurs.
l Poor rubbing resistance - Packaging materials with poor rubbing resistance are prone to creases under the action of external force extrusion or rubbing, and even form pinholes that run through the entire packaging material, affecting the barrier performance of the packaging material.
- Finished product packaging process
l Poor sealing - If the packaging bag body is damaged by external force, or the heat sealing effect of the heat seal is poor, the heat sealing is poor or the heat sealing is excessive, it is easy to cause the problem of poor sealing of the product, and then cause the reproduction of microorganisms.
l Poor sterilization effect - If the sterilization effect of flavored fish products is not good, and there are many microorganisms carried after sterilization, these microorganisms will multiply when the environmental conditions are suitable, resulting in the problem of product swelling.
Expert advice:
——Pay attention to the monitoring of the oxygen transmission rate of the packaging, the oxygen transmission rate after rubbing, the heat sealing strength, and the sealing performance (negative pressure method).
——Choose packaging materials with good oxygen barrier properties and resistance to rubbing.
——Improve the sterilization effect and minimize the number of microorganisms carried by the flavored fish.
Typical quality case:
——Test samples: aluminum-plastic composite film and finished product packaging for flavored fish packaging (customers reported that this product is prone to bulging bags).
——Targeted testing items: oxygen permeability, oxygen permeability after rubbing, heat sealing strength, sealing performance (negative pressure method).
——Test results: The oxygen transmission rate of the sample is 0.1037cm3/(m2•0.1MPa•24h), and the barrier property is high; after rubbing in mode C, there are penetrating pinholes on the surface of the sample, and the rubbing resistance is poor; the heat sealing strength is 45.173N /15mm, the heat-sealing effect is good; in the sealing performance test, the sample without the bulging bag has no air leakage at -90KPa, and the sealing performance is good, while the sample with the bulging bag problem is at -50.7KPa, in the packaging bag body Air leakage occurs at the folds of the surface. Therefore, based on the above test results, due to the poor rubbing resistance of the sample, the barrier property of the package is reduced and the sealing property is poor, which is the main reason for the problem of the bulging bag of the flavored fish product.
Why do medicines packaged with aluminized composite film absorb moisture?
Quality issues:
Drugs packaged in aluminized composite films are prone to moisture absorption.
Cause Analysis:
--Packaging material
l Poor barrier property - The problem of moisture absorption of medicines is mainly related to the high content of water vapor in contact. There is a large amount of penetration inside the package, which in turn causes the drug to absorb moisture.
l Poor rubbing resistance - Packaging materials with poor rubbing resistance are prone to creases under the action of external force extrusion or rubbing, and even form pinholes that run through the entire packaging material, affecting the barrier performance of the packaging material.
- Finished product packaging process
l Poor sealing - If the surface of the packaging bag is damaged under the action of external force during the storage process of the finished drug packaging, or due to the existence of factors such as poor heat sealing effect at the heat sealing place, the sealing of the finished product packaging is poor, It is easy to cause the drug to absorb moisture.
Expert advice:
——Pay attention to the monitoring of performance indicators such as the water vapor transmission rate of the packaging, the water vapor transmission rate after rubbing, the heat sealing strength, and the sealing performance (negative pressure method).
——Choose packaging materials with good water-blocking properties, or improve the water-blocking properties of existing packaging materials to improve rubbing resistance.
Typical quality case:
——Test samples: aluminized composite film and finished product packaging of a certain brand of pharmaceutical packaging (customers reported that the product is easy to absorb moisture).
——Targeted testing items: water vapor transmission rate, water vapor transmission rate after rubbing, heat sealing strength, sealing performance (negative pressure method).
——Test results: The water vapor transmission rate of the sample is 0.736g/(m2•24h), and the barrier property is high; the water vapor transmission rate of the sample after rubbing in mode C is 1.237g/(m2•24h), The water blocking performance can meet the requirements; the heat sealing strength is 6.708N/15mm, the heat sealing sample is completely peeled off at the heat sealing place, and there is a problem of poor heat sealing; in the sealing performance test, when the sample is at -16.7KPa, the heat sealing place occurs. Air leak. Therefore, the poor sealing effect of packaging caused by poor heat sealing is an important reason for the moisture absorption of drugs.
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