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The thickness of each layer of the composite packaging bag determines the product performance. Even a slight difference can lead to significant errors!
Release time:2019-11-01
Considering both packaging cost and performance requirements, the selection of the thickness of each layer of composite packaging bags should be carefully weighed. Generally, the heat-seal layer can be determined through market generalization and standardization, the strength support layer is generally determined by the weight of the packaged product, and the thickness of the functional material is generally determined by the product's shelf life.
The thickness of each layer of material in a composite packaging bag should be carefully weighed, considering both packaging costs and performance requirements. Generally, the heat-sealing layer can be determined through market generalization and standardization, the strength support layer is generally determined according to the weight of the packaged product, and the thickness of the functional material is generally determined by the shelf life of the product.
Below, Shunxingyuan Packaging, a professional flexible packaging manufacturer, will analyze how the thickness of each layer of material in a composite packaging bag is determined.
1. Determined according to the maximum allowable water absorption or maximum allowable dehydration of the packaged product. This method is mainly suitable for moisture-proof packaging design of products, and the key is to calculate the water vapor transmission rate of the composite packaging bag.
2. Determined according to the maximum allowable oxygen absorption of the packaged product. This method is mainly suitable for barrier packaging of products that are very sensitive to oxygen, and the key is to calculate the oxygen transmission rate of the composite packaging bag.
3. Determined according to the maximum allowable number of microorganisms per unit volume or unit surface area. This method is mainly suitable for mildew-proof packaging of products that are very sensitive to microorganisms, and the key is to determine the types of microorganisms in the product and their growth patterns.
4. Determined according to the maximum allowable amount of carbon dioxide or oxygen permeability of the packaging container. This method is mainly aimed at gas-filled insurance packaging of products. Products with declared activity require both oxygen insurance or maintaining bright colors and high concentrations of carbon dioxide to inhibit the growth and reproduction of microorganisms. The key is to calculate the oxygen transmission rate and carbon dioxide transmission rate of the composite packaging bag.
When packaging products, it is sometimes necessary to achieve both moisture-proof packaging and oxygen-barrier or mildew-proof packaging. Therefore, the thickness of each layer of material in the composite packaging bag is generally first determined based on the main packaging purpose and shelf life of the product, and then the theoretical shelf life of the designed packaging is estimated based on the thickness of the material and another packaging purpose to verify the rationality of the designed packaging.
A well-designed packaging bag, coupled with exquisite printing, will surely add luster to your product!
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