Sunday, July 1st, 2012
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The UV radiation-curing process is based on two chemistries
The radiation-curing process is based on two chemistries: the radical polymerization of unsaturated oligomers (mainly acrylate functionalized) and the cationic polymerization reaction of cycloaliphatic epoxides and vinyl ether. Typical liquid radiation-curing formulations are composed of oligomers, reactive diluents, photoinitiators and additives, the general performance of the final coating mainly influenced by the oligomers. The oligomers are characterized by a relatively low molecular weight (between 500 and 5,000 daltons) and are based on different types of backbones: epoxyacrylates, urethane acrylates, polyestersRead More …
Motivation for using UV powder coating technology
UV powder coating users were asked to prioritize their key motivations for using the technology. Speed is the number-one answer, cited for its contributions to improved productivity, lower costs and its ultimate effect of raising manufacturing capacity. Environmental compliance used to be the prime motivator for using the technology but, while still important, ranked lower in the most recent survey. Respondents stressed that the use of UV is based on business decisions related to profitability and value, and because inRead More …
Hollow Microspheres use in coatings
Use in Coatings Uniform spherical-shaped microspheres have lower surface area then irregular fillers and extender pigments, which means a lower resin demand. Another benefit to the spherical shape is the ability to roll past one another, hence there is minimal impact on viscosity when they are added to a liquid. As coatings are manufactured on weight basis and sold on volume basis, microspheres are used to increase the solid content of a coating, maintaining application and flow properties. Higher-volume solidsRead More …
Annual maintenance and inspection schedule for powder coating oven
Annual maintenance and inspection schedule Many plants shut down annually to do system checks that are too time-consuming to do during the production year. Review your manufacturer’s recommendations for manufacturer’s recommendations for annual inspection , adjustment, and replacement of components in the following oven areas: Ignition,burner,combustion air supply,flame failure system,combustion controls,pipes and wires,thermocouples, automatic fire suppression, operating sequences. If a component is suspect,replace it right away instead of waiting until it fails during production. Annual maintenance should not be takenRead More …
Monthly maintenance and inspection schedule for cure oven
Monthly maintenance and inspection schedule Fuel safety shutoff valves These valves stop the fuel supply in an emergency. Check all manual and motorized fuel valves to see if they are operating properly. Fan and airflow interlocks Now is the time to inspect the air switches that regulate air movement and fan operation . These devices assure that that the oven is purged properly before ignition. They also assure that the fans are providing the correct air movement in and outRead More …
Weekly maintenance and inspection schedule for powder coating oven
Weekly maintenance and inspection schedule Burner blower impeller and motor The cleanliness of the fan impeller directly affects burner blower efficiency . Periodic cleaning keeps the blower in good condition,preventing premature bearing failure. Keep blower motors clean to avoid overheating, which can cause electrical failure. By simply removing dirt buildup on the motor housing and cooling fins, you can eliminate costly motor replacement. Heater shell interior Now is a good time to check the heater shell, or firebox,for cleanliness. RemoveRead More …
How to prevent your parts from being half baked-Powder coating oven
Powder coating ovens are an integral part of any powder coatings system. Problems with them can mean the difference between having fully cured parts or having field failures,such as coating adhesion difficulties. With little effort ,a cure oven can consistently provide the energy required to cure the applied powder coat. Convection ovens ,on the one hand,are the most complex type of cure system,requiring the most upkeep.burners,blowers,duct work,and associated moving parts need periodic preventive maintenance. Infrared systems,on the other hand, are relativelyRead More …
D5 Creation