Source：Link Testing Instruments Co., Ltd.
What is the reason for the ink layer peeling on the surface of the aluminum foil packaging of health products?
Quality issues:
The aluminum foil materials used in health care products often have the problem of peeling off the surface ink layer.
Cause Analysis:
--Packaging material
• The adhesiveness or heat resistance of the aluminum foil protective layer is poor-the protective layer on the aluminum foil surface can not only prevent oxidation and corrosion of the aluminum foil, but also make the surface of the aluminum foil layer printable and ensure that the ink is not rubbed. If the protective layer has poor adhesion or poor heat resistance, it is easy to fall off from the aluminum foil layer during heat sealing or other heating processes, the protective effect of the ink will be weakened, and the ink layer will be easily polished and peeled off. It can be verified by protective layer adhesion and protective layer heat resistance test.
• Improper control of the printing process-if the printing process is improper (for example, the surface tension of the aluminum foil is inappropriate), the adhesion of the ink on the surface of the aluminum foil will decrease, and the ink will be easily polished or peeled off.
Expert advice:
——Pay attention to the monitoring of the adhesiveness of the protective layer of the aluminum foil of the health care product and the heat resistance of the protective layer.
——Adjust the printing process appropriately to reasonably improve the surface tension and other properties of the aluminum foil.
What should I do if the blister packaging of health products is not tightly sealed?
Quality issues:
The blister packaging of health care products is prone to leakage due to imperfect heat sealing and deterioration of health care products.
Cause Analysis:
(1) Packaging materials
• Improper selection of heat-sealing layer materials-according to the characteristics of health care products and production processes, packaging materials with good heat-sealing properties should be selected. Such as liquids, powders, and health care products that require heat sterilization, etc. If the blister or bottom plate is not properly selected as the heat-sealing layer material, it is easy to cause the sealing performance of the blister package to decrease and breakage.
(2) Finished product packaging production process
• Improper control of the heat-sealing process-if the heat-sealing parameters are improperly controlled during the heat-sealing process (such as heat-sealing temperature, heat-sealing pressure, heat-sealing time) or the heat-sealing equipment itself is defective, the heat-sealing effect of the blister package is likely to deteriorate, resulting in excessive heat-sealing or poor heat-sealing, etc. Phenomenon, which in turn causes problems such as package rupture and leakage. It is verified by heat sealing strength, sealing performance (negative pressure method) and other tests.
Expert advice:
—— Pay attention to the monitoring of the main performance of blister packaging such as heat sealing strength and sealing performance (negative pressure method).
——Choose materials with good heat-sealing performance as the heat-sealing layer; adjust the heat-sealing parameters appropriately and regularly check and repair the heat-sealing equipment.
Why is the fragrance of plastic-packaged health tea easily lost and deteriorated by moisture?
Quality issues:
Some soft plastic packaging health teas have been found to have lost their unique fragrance when they were opened.
Cause Analysis:
(1) Packaging materials
• Poor rub resistance-composite film (packaging bag) made of aluminum foil (or aluminized film) and plastic film is easy to be rubbed, poor quality packaging is brittle, and it is easy to crease in the transportation and sales of finished packaging Or penetrating holes, resulting in a decrease in the barrier properties of the packaging bag, poor sealing, and easy penetration of external air.
(2) Finished product packaging process
• Poor airtightness-air leakage is likely to occur at the packaging bag body or heat seal under certain pressure or long-term storage, especially if the heat seal strength of the heat seal is too low or too high, and the heat seal strength is uneven, it is more likely to occur Air leakage.
Expert advice:
——Pay attention to the main properties of packaging such as air transmission, oxygen transmission after kneading, air transmission after kneading, sealing performance (negative pressure method), heat sealing strength, etc.
——Reasonably control the relevant parameters of the heat sealing equipment to ensure the heat sealing strength and obtain a good sealing effect.
What are the reasons for the easy leakage of the soft plastic packaging of liquid health products at the seal?
Quality issues:
The bagged liquid health products are very easy to leak at the seal during transportation and sales.
Cause Analysis:
(1) Packaging materials
• Poor thermal adhesion-when the heat seal is just heat-sealed and not yet cooled, the impact of the liquid being filled can easily cause the heat-sealed part to rupture immediately, that is, the thermal adhesive strength of the packaging material is poor.
• Low composite fastness-if the packaging used is a composite film, the composite film at the sealing part may be easily delaminated due to the low composite fastness, which will cause the sealing part to have poor heat sealing strength and easy to crack at the sealing part. leakage.
(2) Finished product packaging process
• Poor heat sealing strength-if the heat sealing parameters of the heat sealing are not adjusted well, it is easy to cause the heat sealing to be inaccurate or over heat sealing, resulting in poor sealing quality of the sealing, under the impact of liquid health products or squeezed by external forces , It is easy to leak and break the bag at the sealing. It can be verified by monitoring heat seal strength and sealing performance (negative pressure method).
Expert advice:
——Pay attention to the monitoring of various performance indicators such as packaging pressure resistance, heat seal strength, hot tack strength, peel strength, and sealing performance (negative pressure method).
——Improve the parameters of the heat sealer and choose packaging materials with good composite fastness and heat sealing performance
What is the reason for the breakage of the soft plastic packaging of health products?
Quality issues:
Some soft plastic packaging bags for health care products are broken during storage, transportation, or sales, resulting in product leakage.
Cause Analysis:
(1) Packaging materials
• Poor toughness-the packaging materials used are more brittle and have poor toughness, which may cause the finished packaging to fall or be impacted (squeezed) by external forces, and the bag may break at the bag body. It can be verified by monitoring burst pressure, drop resistance, pressure resistance, tensile strength and elongation at break, and resistance to pendulum impact.
• Low composite fastness-soft plastic packaging is mostly composite film, and low composite fastness may lead to delamination of the composite film, which will cause the overall toughness of the composite film to deteriorate and cause bag breakage. This can be verified by monitoring the peel strength test.
(2) Finished product packaging process
• Poor heat sealing strength-if the parameters are not adjusted properly during heat sealing, excessive heat sealing is likely to occur, causing the root of the heat sealing to be easily broken. Under the impact of the content or squeezed by external force, it is easy to break at the heat sealing part bag.
Expert advice:
——Pay attention to the monitoring of various performance indicators such as burst pressure, drop resistance, pressure resistance, heat seal strength, hot tack strength, tensile strength and elongation at break, pendulum impact resistance, and peel strength of packaging.
——Improve the parameters of the heat sealer and choose packaging materials with good flexibility.
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