E-commerce logistics promotes the development of flexible packaging materials and solves the problem of opening of flexible packaging
In the Internet environment, e-commerce and logistics coordination have developed rapidly. However, in the process of logistics transportation, if the interests of consumers are protected, the products purchased by customers online are quickly delivered to customers intact, which is also a prerequisite for the logistics industry to ensure quality services. . In order to protect commodities, both manufacturers, e-commerce platforms and logistics service platforms will adopt strong and powerful measures to externally package commodities. Packaging is an effective solution to protect commodities and promote commodities.
When designing the packaging of products (products), it is usually considered from the three aspects of the protective function, convenience function and sales function of the product. Different packaging solutions will be adopted for different products. The flexible packaging materials ensure the packaging effect. What factors need to be considered at the same time. In addition to the quality problems of the material itself, the factors that affect the poor opening of the flexible packaging material and the heat sealing are also influencing factors such as the type of adhesive, the amount of glue, and the curing temperature.
(1) The quality problem of the inner layer film itself If the inner layer film (such as PE, CPP) itself has a problem of slippage, then no matter what kind of compounding process and adhesive, there will be a problem that the coefficient of friction is too large.
(2) The inner layer film is too thin and the amount of glue is large. In addition to the reason that the inner layer film itself is not smooth enough to cause a large friction coefficient, the reason for the large friction coefficient is that the adhesive reacts with the organic slip agent to cause slip Agent precipitation (mainly occurs in the inner layer film), you can replace the relatively thick film or ensure the peel strength on the premise of appropriately reducing the amount of glue can make the problem of large friction coefficient greatly improved.
(3) Lowering the curing temperature If the above solution does not solve the problem of a large friction coefficient, appropriately reducing the curing temperature to below 40 ° C can also reduce the friction coefficient of the composite film.
(4) Replace the adhesive. Replace the adhesive with a relatively large molecular weight.
(5) Excessive corona treatment of the inner layer film Excessive corona treatment of the inner layer film causes breakdown, which can lead to the problem of inadequate heat sealing of the composite film.
(6) Precipitation of the slipping agent attached to the surface of the inner layer film The adhesive reacts with the slipping agent or dissolves out the slipping agent causing the slipping agent to adhere to the surface of the inner film, or the heat sealing temperature is too high to cause the slipping agent to precipitate Attaching to the surface of the inner layer film causes heat sealing failure; the problem of heat sealing failure can be improved by reducing the amount of glue and reducing the heat sealing temperature.
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