How to confirm the thickness of composite bags each layer? Tips on this!

Considering from two aspects of the packaging cost and function requirements, composite bags thickness of each layer is selected need to carefully weigh. In general, the heat sealing layer can be identified through market generalization and standardization, the intensity of support layer generally according to confirm the weight of packaging products, while the thickness of the functional materials are usually confirmed by the shelf-life of the product. Professional manufacturer of flexible packaging packaging of the opinion that theoretically determine the thickness of composite bags each layer has the following several aspects. 1, the permeability coefficient according to the maximum permissible water quantity of the product packaging or product of the maximum permissible to take off the water, the way to adapt products moistureproof packaging design, the key is the calculation of flexible packaging moisture permeability coefficient of the composite material. 2, oxygen transmission coefficient, according to the maximum allowable oxygen uptake of packaging products to affirm, this way is mainly to adapt to the product of oxygen barrier property is very active products packaging, the key is to calculate the air coefficient of flexible packaging composite materials. 3, microbial number according to the unit volume or surface area maximum permissible microbes, confirmed that the number of the measures mainly used anti-mold packaging products of microorganism is very loose, the key is to confirm the product of microbial species and reproductive growth of rules, etc. 4, oxygen transmission coefficient and the coefficient of co2 is according to the maximum allowable packaging container through carbon dioxide and oxygen permeability confirmed that this method is aimed at inflatable err on the side of packaging products, a product with the statement activity both demand oxygen safe or stick to a beautiful color, and demand a high concentration of carbon dioxide to restrain the growth of microbial breeding, the key is to calculate the air coefficient of flexible packaging composite material and coefficient of carbon dioxide. Product packaging, sometimes should reach moisture-proof intentions, and to reach intention of oxygen or mildew resistance. Therefore, generally by a primary packaging of the product packaging first intention and product shelf life spans confession composite bags thickness of each layer, according to the thickness of the material and another kind of packing intention budget planning theory shelf life, to verify the rationality of the planning and packaging.