摘要:
A UV curing apparatus and method is provided for enhancing UV curing of inks, coatings and adhesives having UV photo initiators therein by subjecting the UV curable inks, coatings or adhesives to UV light at different wavelengths. Preferably, the UV LED assemblies are alternated in rows and emit light at a wavelength between 180 nm and 420 nm. A row of UV-LED assemblies which emit light in the visible spectrum can be included so a user can visually see if the apparatus is working. A cooling system can be provided for maintaining the UV-LED assemblies at a desired temperature to maintain light intensity and the UV LED assemblies are placed at a distance from the UV curable product which will provide a uniform pattern of light diverging from the UV-LED chips of at least 50% the power output of the UV-LED chips at a viewing cone angle of 2null1/2. Still further the apparatus can be combined with an ink, coating or adhesive having photo initiators that are activated by light at more than one wavelength.
摘要:
A process for application of powder coatings to conductive and nonconductive surfaces comprising a) covering the surface with material which absorb high-energy radiation within a wavelength in the range of 250 to 2,500 nm and having heating rates of more than 50null C. per second and b) applying a powder coating composition to the covered surface and melting and curing the applied powder coating composition with NIR radiation.
摘要:
Upon a substrate subsequent layers of elastic ink are jetted using an ink jet printing system. Each layer is immobilised by a immobilisation step before jetting the following layer. A printing relief is gradually formed to obtain a flexographic printing plate allowing accurate control over the relief and slopes of the printing plates. Use can be made of different inks or immobilisation step to obtain different layer characteristics. Inks can be immobilised using UV curing. The recorded relief of the layers can be measured and corrections can be applied using a feed-back loop. A rejuvenation process for printing plates can be constructed using the described method. An elastic base layer can be provided on the substrate to provide better plate characteristics.
摘要:
A method for inspecting crystal quality of a polysilicon film. First, a substrate covered by a polysilicon layer is provided. Next, a probe light beam having a predetermined wavelength is irradiated through a beam splitter to separate into a first light beam and a second light beam, which is used for irradiating the polysilicon layer. Thereafter, the light intensity of the first light beam and the light intensity of the second light beam reflected from the polysilicon layer are detected to achieve a light intensity ratio. Finally, crystal quality of the polysilicon layer is monitored by the light intensity ratio. An apparatus for inspecting crystal quality of a polysilicon film and the method for controlling the same are also disclosed.
摘要:
The present invention is for a process of sensing chemicals with nanoparticles, particularly nanoparticles whose bandgap has been altered from that of their corresponding bulk material by reducing their particle size below their quantum confinement threshold. The photoluminescent properties of these nanoparticles can be altered as a result of interaction with their chemical environment. Thus, by carefully understanding how a particular chemical species alters the chemical environment and changes the photoluminescence of the nanoparticles, the identification ofnulland the screening fornulla wide range of chemical species can be accomplished. Furthermore, in embodiments in which the chemical species of interest is a harmful material, detection and screening of said harmful material can be carried out in a pre-emptive manner.
摘要:
A method of forming a coating on a substrate. A coating is formed on a substrate by depositing a solution comprising a resin molecule containing at least 2 SinullH groups, at least 2 SinullCH3 groups, or a combination thereof, and, a solvent in a manner in which at least about 5 volume % of the solvent remains in the coating after deposition, followed by exposing the coating to UV radiation at a power and wavelength spectrum sufficient to cause hydrolysis of the SinullH groups, SinullCH3 groups, or combination thereof, and at least partial condensation, and evaporating the solvent from the coating to form a porous network coating. The method enables production of low-k materials without treatment with ammonia.
摘要:
An actinic radiation curable composition, comprising a photo-acid generating agent selected from the group consisting of sulfonium represented by General Formulas (I)-(III).
摘要:
An apparatus for powder coating has a coating chamber and a generally horizontal conveyor to electrically ground a article within the coating chamber. A powder dispenser distributes powder within the coating chamber to coat the article.
摘要:
A method for applying a powder coating to molding has the steps of providing molding to a coating chamber. Powder is then distributed to the coating chamber. The molding is electrostatically charged to attract the powder. The powder is cured to adhere the molding.
摘要:
Systems and methods are described for environmental exchange control for a polymer on a wafer surface. An apparatus for controlling an exchange between an environment and a polymer on a surface of a wafer located in the environment includes: a chamber adapted to hold the wafer, define the environment, and maintain the polymer in an adjacent relationship with the environment; and a heater coupled to the chamber. A method for improving performance of a spin-on material includes: forming the spin-on material on a surface of a wafer; then locating the spin-on material in an environment so that said environment is adjacent said spin-on material; and then controlling an exchange between the spin-on material and said environment. The systems and methods provide advantages because inappropriate deprotection is mitigated by careful control of the environmental temperature and environmental species partial pressures (e.g. relative humidity).