Affect automatic pre-coating film machine film quality has what?
Garritt company specializing in the production of laminating machine, automatic laminating machine, glazing machine, automatic glazing machine, non-adhesive laminating machine and other products, because focus on this for many years, but also accumulated some practical experience, the following small series and you explain the analysis of the main factors affecting the pre-coating laminating machine are what?
According to the practical process, it is found that the laminating quality of pre-coated laminating machine is mainly affected by temperature, pressure and speed. Therefore, it is very important to correctly handle the relationship between the three factors to ensure the laminating quality of pre-coated laminating machine and the influence on the production of the next process. The paper-plastic coating will be the comprehensive result of the physical action of hot pressing. Temperature, pressure and velocity are the three basic factors to realize this physical comprehensive effect. The key to process operation technology is to deal with the relationship between the three factors correctly.
The first major factor that should be paid attention to: temperature
Temperature is the first key to film the pre-coating film with adhesive is hot melt adhesive, temperature determines the molten state of hot melt adhesive, determines the flow of hot melt adhesive performance, determines the hot melt adhesive molecules to BOPP film, paper, printing ink layer base material of the diffusion of the three kinds of material such as ability, but also decides the degree of crystallinity of hot melt adhesive, only the right to control the temperature of the working area, In order to make the solid hot melt layer of the pre-coated film on the film melt thoroughly into a viscous flow state, with appropriate fluidity to achieve wetting and bonding on the surface of the printed matter, and ensure the instant curing after composite, so that the film product to achieve the appearance of smooth, bright enough, good melting degree of the adhesive layer, no crease. And will be able to peel ink.
The temperature control of the film process also affects and determines the change of the film with hot melt adhesive solution when heated, as well as the strength of the new heat. Therefore, strict control of temperature is the first key to precoating coating machine.
Pre - coating film machine should pay attention to the second factor: pressure
Pressure in the correct control of cladding temperature at the same time should also use appropriate pressure, because the surface of the paper itself is not very smooth, only under the action of pressure, sticky flow state of hot melt adhesive will be in the process of driving away the printed surface of the air to fully wet the surface of the printed paper.
Producing colloid to paper printed ink film, paper, molecules diffusion, dislocation, achieve good bonding between, form to print on the surface of the whole complete cover, make prints to brightness, no fog, sub flow smooth, no crease, bonding effect is good, in the case of not buckling, appropriately increase the pressure, to make the hot melt adhesive curing thermoplastic function to the full performance, In order to ensure that the film products in the process of compounding and adding, to a variety of physical peeling, impact force and other effects have strong resistance, in order to achieve the composite printed matter internal structure and surface state to achieve a perfect uniform speed.
Paper laminating is a dynamic composite movement, and its movement speed determines the time that the paper plastic complex stays on the hot pressing body in the hot pressing working interface, and also determines the temperature and pressure input by the laminating machine, as well as the actual action value of the paper plastic composite in the actual production process.
Pre-coated laminating machine laminating should pay attention to the third factor: speed
When the film temperature and pressure, after two factors fixed speed change will make the compound membrane effect changes, but due to the limited supply of maximum temperature and pressure, will only by less than the direction of value, and with the speed up, drop apparently, hot pressing force recession, worsen composite effect, run too fast, not firm bonding, there will be fog, too slow, inefficient, And even blistered. Therefore, the composite running speed determines the bonding time of pre-coated film and paper printing.
The actual action value of temperature, pressure and velocity has a certain range. Due to the different equipment, this requires us to find the best value in practice, to ensure the composite effect of the pre-coated film and create favorable conditions for the next process of the nail cover spine from the shell, no foaming.
More information can be found on the official website: www.rajlt.com
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