POFI-ENGINEERING - Together for innovation

Nucleation unit for continuous production lines POFI-Engineering concept: Foam polyurethane is before a whole alveolar plastic. The properties of this matrix depend mainly on two factors, the structure and the composition. The structure of the cells is carried out by the action of the inflating agents. More the structure is fine and homogeneous, more the mechanical characteristics of foam polyurethane are good. The chemical composition between also mainly in its mechanical resistance. A homogeneous and stoichiometric mixture confers on foam polyurethane its optimal mechanical characteristics. Nucleation (air, nitrogen or CO2) enters the part still little used mechanical expansion. When physical agents are used to form the cells, the gas phase of the alveolar plastic is chemically identical to that of the inflating agent. This technique had problems of implementation, recently solved by the addition of the function of miscibility of gases in a liquid via a whole of variations of...

Polyurethane foam is primarily a cellular plastic. The properties of this die depends mainly on two factors, the structure and composition. The cell structure is formed by the action of blowing agents. The more the structure is fine and homogeneous, the more mechanical properties of the polyurethane foam is good. The chemical composition also between largely in its mechanical strength. A homogeneous mixture stoichiometric gives the polyurethane foam its optimum mechanical properties. Nucleation (air, CO2 or nitrogen) enters the like using a part of the mechanical expansion. When physical agents are used to form the cells, the gas phase of foamed plastic is chemically identical to that of the blowing agent. This technique has encountered difficulties of implementation, recently solved by adding the function of the miscibility of gas into a liquid through a set of changes associated with a system for mixing and homogenisation pressures of high performance. The direct effects of...

Dispergator for sandwich panel production lines Mixing concept Because of changes in regulations on additives and the complexity of for-mulations, items in the Polyol blend viscosities were varied and are very difficult miscible or even immiscible. The result is a foam very difficult to implement, surfaces in contact with the plate full of bubbles, adhesion problems, shrinkage problems, bubbles, … To circumvent the lack of miscibility of the components we have developed two elements allowing a dispersion of additives and the gas into very small particles homogenously distributed in the Polyol. Therefore, when the Polyol is mixed in the mixing-head with Isocyanate, additives are much more reactive and there is no concentration of gas or random foaming agents that create bubbles surface states or « potato fields. ». The disperser is to this day an essential element of the production units of polyurethane foams and have a great effect on PIR. It is available as low pressure (air...

Benefits of the dispenser: The quality of the polyurethane foam for sandwich panels produced continuously is strongly dependent on the control of the wave. If the speed of the line is not well controlled and if the contact point of the wave with the top of the facing is not well positioned the mechanical properties of the produced panel decrease considerably. The spreading system mostly used mostly used at present is the “Poker”, a rake which oscillates in different speeds from left to right and from right to left of the panel. We settle generally a covering around 60 % on the return to the rake. This system contains numerous inconveniences: the distribution is very difficult to make homogeneous, make it cover the foam tends to crush cells in formation of the first passage and the wave is not uniform, thus difficult to adjust. The novelty is the fix foam dispenser, it allows of landing all these problems. The foam is put down on the lower facing in a uniform way and allows of...

Mixing concept Description: The mixer drum (Drums or rotator) TF220 allows to rotate a drum of 220 litters to homogenize the contents. The drum is laid on a support inclined slightly rearwardly so as to improve the mixing in the drum. It is firmly held by a retaining hook in the upper part and two retaining st raps on its periphery. The mixing time is set as a front view of the control box by means of a programmable timer. The assembly is protected in an enclosure fenced and secure. The drum turns off automatically in the upright posi-tion so as to simplify the installation or removal of drums. In a simple design, it is robust and requires very little maintenance.

Fixed Foam Dispenser For Flexface Continuous Lines Designed with the latest software for flow calculation, our fixed foam dispenser is certainly the best low cost system to improve your production line. Most of actual production lines for flexface panels have a deposit system with 2 outputs per mixing head. The impact velocity on the inner facing is high and the flow output is quite turbulent, a part of the blowing agent immediately turn in gas and lose their effect for the foam expansion. This speed also create bubbles at the deposit. With the new POFI patent, we reduce this effect and increase the foam quality with a non turbulent deposit. The impact velocity is lower and the given angle to the distribution system allows for reduced bubble formation. The uniform arrangement of dispensing dots enables an optimal orientation of cells and thereby to obtain better mechanical characteristics of the panel. Each mixing head output is divided in 4 streams to ensure a better...

CONCEPT We found that on many production lines for flexible fac-ing panels, the three mixing heads did not produce the same quality of foam, even with the equivalent flow and pressure parameters. This is very often due to the poor distribution of the Polymix in the three high pressure pumps. After calculations and simulations of fluids, we have de-veloped a low pressure distribution unit to avoid dead zones and various preferential flows. Easy to install Better distribution on the 3 pumps Eliminates preferential flows Homogenizes the foam on the 3 heads . Do not hesitate to contact us for more information .

POFI-Engineering offers you his vast experience in the maintenance of polyurethanes process to offers you the best prices for most of the spare parts needed for your production. Because of our location and our global presence we have access to the best rates for you. The majority of seals, injectors, pumps and DUT mixing heads are kept in stock at our office. Feel free to contact us. ————————————————————————————————————————————————————————————————————————————————————————————————————————————– Repair kits pumps We are able to offer you the repair kits pumps high-pressure type DUT DMP and Hydromatik kind A2VK A7VK and at rates of interest and time. ————————————————————————————————————————————————————————————————————————————————————————————————————————————– Repair kits for high pressure mixing heads All seal kits for mixing heads DUT are kept in stock, we can also supply all spare parts on providing the reference of your head DUT and the serial number of the...

Magnetic Couplings specifically for Polyurethanes process. general informations The GMDO is a permanent magnet designed to transmit torque thanks to the magnetic field established between the inner and outer rotor. The use of magnetic couplings is recommended whenever it is necessary to hermetically separated two zones in order to prevent fluid or gas leakage from an area to another. An example application is fluid transfer pumps. In this applications the fluid must not come into contact with the external environment. The magnetic coupling also prevents the transmission of vibrations and axial / radial loads to the drive shaft. . Main benefits: No fluid leakage Maintenance free Reduction of vibrations Possibility to limit a maximum torque Some example applications: Application on low pressure foaming machine Application on MDF wood gluing machine Application on high pressure machine for polyurethane Application on storage plant Application on Mixer Main technical data The...

Concept: Mixing heads for continuous lines are the fruit of many years of experience in the sandwich panel field. The rearward-angled injectors increase turbulence and thereby improve mixing. The whole is made of noble steels and treated for a long service life. Production costs are optimized so that we can offer you this mixing head at a very good price. Produced in Korea, we have all the parts in stock in our premises. This system is compatible with all existing lines. Do not hesitate to contact us for more information.