Printing color difference caused by pressure discomfort of suction bag products
The ideal printing process is based on the "three flat", so that a thin ink layer can balance the printing pressure to obtain a more uniform ink color on the suction bag products. When the printing pressure is insufficient or uneven, and there is poor contact between the liner and the plate surface, it is necessary to increase the amount of ink input to meet the visual effect of page inking. However, this will not only increase the consumption of ink, but also easily lead to color difference and sticky quality problems.
Packing bag knowledge: what is the reason for the adhesion of plastic packaging film?
There are two main reasons for the adhesion of plastic packaging film: one is that after the film is closed, it is not easy to separate; the other is that there are a large number of exposed molecular chains on the surface of the packaging film after forming, resulting in the intertwining of macromolecular chains between the two packaging films, which makes them unable to open. In fact, there are two reasons for the difficulty of packaging film opening, and the latter is the main reason. The early inorganic opening agent is to use the uneven surface of the packaging film to reduce the negative pressure between the films to share; the later organic opening agent is to form a layer of lubricating film on the surface of the packaging film to reduce the friction coefficient of the packaging film, so that it does not adhere to each other. Both of them also block the entanglement of molecular chains. http://www.dgbpk.com/
Dongguan Beite packaging materials Co., Ltd
Dongguan special bag, plastic bag, plastic bag, plastic bag