Common problems and solutions for thin film coating machines.

In the production of traditional Chinese tablets, the introduction of thin-film coating technology or production technology, often appear some problems.
such as sticky tablets, orange peel film, pinholes, tablet color difference, spray, collapse edge, color spots and other phenomena.
of pharmaceutical companies said that in the current production technology or equipment conditions, these common problems have been very easy to solve, is no longer a problem that plagues the film coating process technology.
, the small list of film coating machine in the production process is more common to several major problems, as well as the corresponding solutions.
, clothing film logo blurring for coating products, coating film surface marks are very important, and require clear visibility.
but many customers reported that during the operation will find the inscription on the clothing mark blurred.
this situation be solved? Countermeasures: Slow down the clothing spray speed, reduce the drying temperature, at the same time should pay attention to control the hot air temperature.
, the thin film coating machine appears color spots it is understood that the film coating machine this situation, mainly due to the mixing of the coating liquid, or solid-like quality fineness caused.
: When wearing coated liquid should be fully stirred evenly.
, clothing surface ripples in the industry, the appearance of ripples of clothing film has also become "orange skin" film.
this phenomenon is mainly due to improper drying of the film coating machine, coating liquid spray pressure is low, so that the sprayed droplets are not equally concentrated by heat.
: The industry says that if this happens, evaporation rates should be controlled immediately to increase spray pressure.
4, the surface of the garment film "spray frost" is understood, in the hot air humidity is too high, the spray range is too long, poor atomization effect, the film coating machine clothing surface is prone to "spray frost" phenomenon.
: at this time should be appropriate to reduce the temperature, shorten the injection range, improve the effect of atomization.
, the phenomenon of sticky sheet is understood that this situation is mainly due to the spray volume is too fast, in violation of the principle of solvent evaporation balance, so that the pieces are glued to each other.
countermeasures: the industry said that this situation, should appropriately reduce the amount of coated liquid spray, improve the hot air temperature, speed up the speed of the pot and so on.
, the membrane surface has pinholes according to industry reflection, many film coating machine in operation, the surface of the membrane will appear pinholes.
industry says this is due to excessive air involved in the preparation of the coat fluid.
: Too much air should be avoided during fluid distribution.
, the color difference between the tablets when spraying the fan surface is not equal, the content of the cling liquid is excessive, or the coater speed is slow, it is easy to lead to the color difference between the tablets.
: at this time should adjust the angle of spray gun injection, reduce the solid content of the coat liquid, appropriately improve the speed of the coater.
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