Electrostatic flocking

Electrostatic flock spray guns E 0.24mJ/5mJ 1st edition... 

Preparation agent for Electrostatic Flock Finishing. Lubricant and anti-static softener for synthetic fibers, wool and blends. 

Cationic preparation agent for electrostatic flocking. The flock material achieves high resilience and separates easily. 

Because the adhesive represents the positive pole (earth) in the electrostatic flocking process, through which the charge must be dissipated rapidly, it is required to show a certain conductivity (maximum resistance 10 Q) This is not a problem where water-based adhesives are used, but in the case of solvent-containing adhesives, the necessary conductivity often can be obtained only by means of additives. 

B. Useful Areas Xerography Electric separation High voltage generators Electrostatic precipitation Electrostatic microphones Electrostatic flocking... 

Coatings can be prepared by hot flocking, in which the heated part is dipped into a fluidized bed of ETFE powder and then is removed to cool. ETFE coatings can also be applied by other powder coating methods (e.g., electrostatically) or by spraying of water- or solvent-based suspensions followed by drying and baking [27],... 

While there are several ways to apply powders, two are most commonly used for CPI applications. They are called electrostatic spray application and hot flocking. 

Hot flocking. Powder coating is one of the best ways to coat a large impeller or a mixing blade with a layer of thick fluoropolymer. Usually, the process starts with a cold electrostatic powder coating step... 

While the same powders can be used for hot flocking, usually a larger particle size is used. This is partly due to the fact that most people turn off the electrostatic high-voltage supply. Larger particles have more momentum to carry them to the part. 

Typical properties of thermoplastic hinders are summarized in Table 3.8. Application is mainly by fluidized bed but includes application by flocking. Electrostatic spraying is also used for finely ground powders. The main uses are in the interior sector. The PVC powders are the most widely used thermoplastic binders for exterior use. 

Fiber flocking Also called flock spraying. It is a method of coating by spraying finely dispersed fibers or powders by pneumatic or electrostatic means on adhesive coated surface producing a velvety surface. Another method takes preheated parts that are dropped into a bed of fibers or powders. Fibers used include nylon, rayon, cotton, or TP polyester. It provides an attractive/decorative surface, sound absorber, etc. 

Since heterocoagulation is a stochastic process, great care needs to be taken not to end up with large fractal clusters or flocks of the two colloidal components. Driving forces to promote adhesion of inorganic nanoparticles onto the surface of polymer latex particles, or vice versa, can be based on a variety of forces, such as electrostatic attraction, hydrophobic interactions, and secondary molecular interactions such as (multiple) hydrogen bond interactions and specific molecular recognition (e.g. complementary proteins like avidin-biotin). 

Conversely, the effects of the electrostatic charge can also be used commercially, namely, in electrostatic paint spraying and in the flocking of fabrics to produce velvety surfaces. 

For dry powder spraying from a flocking spray gun the formulation must be sprayed onto a surface preheated to about 370°C. Electrostatic powder spraying can be done on either hot or cold metal surfaces. Thicknesses when sprayed cold are usually Umitwri to gb ut mils but coatings as heavy as AO mils can be built up... 

Flocking is a process of placing a velvetlike finish on virtually any surface. On plastics flocking is applied generally by mechanical or electrostatic means. The process consists of coating the part with an... 

The 3D structure between two textile surfaces can be produced with the flock technology. In this technology, short cut fibres (flock fibres) are electrostatically charged and applied on adhesive coated substrate using an electric field. The flock technology is over 100 years old and is used in various technical, medical and textile sectors. The so-called filter-flock method is a process to improve the characteristics of spacer fabrics. The ribs made with flock, also known as rib-flock , allow for a greater conduction of excess heat and body moisture from the body due to their channel-shaped structure (cf. Section 14.3 Krel et ah, 2005 Machova et ah, 2006). 

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