Why are packaging bags so easily torn? Source factory suggestions for you.
Release time:2019-10-07
There are many exquisite packaging bags on the market, but some packaging bags have the embarrassing situation of being easily torn. Whether it is clothing bags, food packaging bags, aluminum foil bags, composite packaging bags, cosmetic packaging bags, hardware packaging bags, or retort pouches, they all have this problem to varying degrees. However, many customers of Shunxingyuan Packaging, a professional flexible packaging manufacturer, rarely report such problems. Today, Shunxingyuan will combine our production experience to explain how to reduce the tear rate of packaging bags.
1, Quality Issues Analysis
Some packaging bags are torn on the surface (excluding the heat-sealed area) during transportation and sales.
2. Quality Issues Cause Analysis
1. Packaging material has poor puncture resistance
Some products have sharper edges and corners, such as hardware products and cosmetics. These products will exert a certain amount of puncture force on the packaging bag. If the packaging bag has poor puncture resistance, it is easy to tear. This can be verified by testing two indicators: puncture resistance and sealing performance (negative pressure method).
2. Packaging material has poor oil resistance
Some products have a high oil content. If the packaging bag material has poor oil resistance, long-term contact with oil components can easily reduce its flexibility and puncture resistance, leading to tearing problems.
For example, the tensile strength and elongation at break (these two indicators are tested through tensile strength, elongation, and elastic modulus tests) of packaging bags containing melon seeds are significantly different from those of unpackaged melon seeds.
3. Packaging material has poor flexibility
If the packaging bag has poor flexibility and high brittleness, it is easily torn under the impact of internal products or external impact forces. This can be verified by testing two indicators: tensile strength, elongation, and elastic modulus, and pendulum impact energy.
3. Suggestions from the packaging bag's original factory
Pay attention to the daily monitoring of the puncture resistance, pendulum impact energy, peel strength, tensile strength, elongation, and elastic modulus of the packaging film, the tensile strength, elongation, and elastic modulus of the finished packaging, and the sealing performance (negative pressure method).
Choose packaging materials with good flexibility, oil resistance, and puncture resistance, or improve the puncture resistance and oil resistance of existing packaging materials by increasing the thickness.
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