Abstract:
A closed space is formed in a reduced pressure drying station, and the closed space is brought to a vacuum state. In this state, an EB unit irradiates a wafer mounted on a hot plate with an electron beam to foam an insulating film material. Subsequently, the hot plate is raised to a predetermined temperature, and drying processing is performed under a reduced pressure. As described above, since the foaming processing is performed in the reduced pressure drying station, bubbles remain in the insulating film, so that the existence of the bubbles can decrease the relative dielectric constant.
Abstract:
An improved drying system for drying coating fluids is provided by which conventional drying times are greatly reduced by subjecting the coating on a moving support web to a corona discharge in a manner creating a drying current flow along the length of the coating. Further reductions in drying time are realized by subjecting the coating to an intense electrostatic field, air streams and/or heat from a heated platen.
Abstract:
A convertible coating apparatus provides one or two side coating of a web having wet ink thereon to permit both printing and coating to be carried out prior to any drying operation. The apparatus includes a coating applicator roller in contact with a relatively hard back-up roller. The coating applicator roller is supplied with coating in both the one and two side operations while the back-up roller is supplied with coating only in the two side operation. Water is supplied to the back-up roller in the one side operation and the back-up roller has a hydrophilic surface which, when supplied with water, repels the wet ink on the web passing through the couple and prevents smudging and offset of the ink to the back-up roller. A method of carrying out the one and two side coating is also disclosed. A turning roller is also provided which guides the freshly inked web between inking operations without smudging the ink on the web.
Abstract:
A method for applying adhesive to join two surfaces. A nozzle has a body member and a conical tip extending from an outlet face of the body member. A first pair of gas passageways is disposed on a side of the conical tip opposite a second pair of gas passageways. Each of the four gas passageways has a dispensing orifice at the outlet face of the nozzle body. The pairs of passageways are inwardly directed to project streams of gas, preferably air, parallel opposed sides of the conical tip. Thus, the streams of air converge at a distance from the outlet face beyond the apex of the conical tip. These streams of air cradle a stream of material issuing from the apex of the conical tip and cause an oscillatory asymmetric figure eight deposition of material. The deposition on a first surface has a resonant frequency and has smooth, controlled radius turns at its edges. A second surface is then brought into contact with the first surface while the adhesive is still in a fluid state.
Abstract:
A method and apparatus for transporting small quantities of viscous material and for depositing the viscous material on a substrate by means of a transport pin formed by an ultrasonic sonotrode. Two components of a two-component adhesive may be supplied in small metered quantities and intimately mixed and the mixture may be deposited on a substrate. Due to the fact that the two components are mixed only a short time before they are deposited on the substrate, the pot life of the mixture does not become a problem.
Abstract:
A device for applying a coating to a submerged surface. This device comprises an applicator having a support plate and a tight deformable envelope provided on is outer face with bristles, springs being fixed to the inner face of the plate and exert a pressure on the inner face of the envelope. The applicator is connected to the rigid support by means of a group of articulated rods, thereof at least one is connected to the support by elastic means in order that the applicator is applied with an adequate pressure to the surface. Application to the painting of the hulls of ships.
Abstract:
Apparatus for coating with a desired substance a succession of beverage bottles traveling along an arcuate guideway. A star wheel assembly, rotatable about an axis at which the arcuate guideway is centered, feeds the successive bottles along the guideway, further coacting with the opposed guideway-defining surface to cause rotation of each bottle about its own axis. Coaxially mounted on the star wheel assembly, either for simultaneous rotation therewith or for independent rotation, one or more annular rows of discrete coating bodies or one or more coating rolls apply the coating substance to the successive bottles, creating one or more band-shaped coatings around each bottle. In one embodiment the star wheel assembly is replaced by a feed roll assembly comprising a pair of annular rows of independently rotatable feed rolls.
Abstract:
A coating apparatus is disclosed. The apparatus comprises a coating head having a slide face along which a coating liquid flows down and a roll moving a continuous web downwardly. The slide face and the roll define a space for forming a sustained liquid mass therein. The coating head has a bottom face which is provided with a groove in the proximity of and substantially parallelly to the slide face whereby a thin liquid film is formed on the web at high speed.
Abstract:
An expandable linear guide is releasably affixed to a wall at a desired space below a ceiling meeting the wall. A paint applying device is removably mounted on the guide for movement along the length of the guide and includes a roller in abutment with the wall. A pulley and cord arrangement is mounted on the guide and coupled to the paint applying device for moving the paint applying device along the length of the guide, as desired.
Abstract:
This invention relates to a process for squeezing and/or drying a humid thread, particularly a textile thread, in the course of a treatment, such as dyeing, effected continuously on said thread during the rectilinear displacement thereof, wherein the humid thread is passed into a zone traversed by a current of air at a pressure much lower than the pressure prevailing about the thread during the operation having provoked its humidification. The invention also relates to an apparatus for continuously treating a thread, for example a textile thread, applying the process as described hereinabove.