Abstract:
L'invention concerne un dispositif de mélange et de dis tribution par doses d'un produit à un ou plusieurs composants. Ce dispositif comprend une chambre de mélange 3 dans laquelle est monté libre un organe mélangeur de type statique 7 qui peut ainsi se déplacer à l'intérieur de la chambre 3 sur une course prédéterminée; cet organe est associé à des moyens de rappel 8 agencés pour le repousser dans le sens S₂ allant de la sortie vers les entrées de la chambre. L'organe 7, en se déplaçant au cours de la distribution du produit, permet de projeter des doses de celui-ci avec une grande précision et sans dispersion, tout en réalisant un mélange intime des com posants dudit produit.
Abstract:
A coating method and a coating apparatus which is suitable for stably forming a coating on the surface of a flat sheet member, and a method of manufacturing coated sheets such as a color filter. The coating method comprises the steps of supplying a coating liquid to a coating liquid discharging apparatus having a coating liquid discharging slit by means of a coating liquid feeder, relatively moving at least either the coating liquid discharging apparatus or a member to be coated and forming a coating having a predetermined thickness on the member. A coating start portion of the member is stopped at a place at which it opposes the coating liquid discharging slit of the coating liquid discharging apparatus, and discharge of the coating liquid from the coating liquid discharging slit is started. After a coating liquid bead which is in touch with both of the front end opening of the coating liquid discharging slit and the coating start portion of the member is formed, relative movement of at least either the coating liquid discharging apparatus or the member is started. By the coating method, discharge of the coating liquid is started when the member stops relative to the coating liquid discharging slit, and after the formation of the coating liquid bead is confirmed, the member is relatively moved in a state that the coating liquid bead remains stable. Therefore, the coating start position can be correctly determined, and a coating can be formed highly accurately.
Abstract:
An apparatus for controlling the bead edge in slide-bead coating is disclosed employing bead edge guides (20) in a gap between a coating lip (17) and a moving substrate (18). The apparatus provides for improved coating quality and less material loss typically observed with increased line speeds.
Abstract:
In order to lay-out a stripe on a road surface (14) in an economic and practical manner, the stripe can consist of individual blobs (15) of stripe material. By supplying the material (6) via a slot to a position through which slats (4, 5, 18) on a rotating brush pass during the turning of the brush, each slat carries with it a blob of the material which it throws down on the road surface. Both flexible as well as stiff slats can be used in accordance with requirements. By providing the slats (18) with a U-shaped section, one can throw out larger blobs at a relatively high speed of rotation, and thus blobs can be laid-out at speeds right up to around 50 km per hour. In order to render the laying-out independent of the rate of advance of the apparatus, one can couple a motor (19) which can turn the axle, and thereby the brush, independently of the normal driving via a driving wheel (1, 16).
Abstract:
Each of liquid application nozzles (4, 4a, 124) comprises a first block (41) having therein a liquid reservoir (43) extending in a longitudinal direction and an inner discharge portion composed of a multiplicity of small holes (44) formed in a bottom of the liquid reservoir (43) to extend along the longitudinal direction, a second block (42) having an inner space, which forms a gas reservoir (46) extending outside the first block (41) in the longitudinal direction, and an outer discharge portion composed of a multiplicity of small holes (48) and formed at the bottom of the inner space along the longitudinal direction and adapted to form a gas stream to surround from outside a linear-shaped liquid flow flowing down from the small holes (44), whereby a thin coating can be formed in a short time while suppressing consumption of a liquid and unevenness in coating is made hard to generate.
Abstract:
A shield, such as an upstanding cylindrical partition (40) is mounted adjacent to an air source, such as an air distribution plate/screen (18) of a Wurster system processor (10), whereby the open upper end of the partition (40) is generally horizontally registered with and disposed about the upper extremity of an associated spray nozzle (32). The open lower end of the inner cylindrical partition (40) is generally sealed relative to the air distribution plate/screen (18) and operative to receive air upwardly therethrough for subsequent passing through the inner partition about the spray nozzle (32). The upper end of the inner tubular partition (22) shields the initial spray pattern discharged from the spray nozzle (32) and prevents the premature entrance of particles moving into the spray nozzle area.
Abstract:
Method and apparatus for curtain coating one or a plurality of superposed layers of a photographic composition onto a moving support (20) at a width wider than the width of the support (20). An edge portion of the free-falling curtain (18) is interrupted and diverted above the impingement locus on the support (20) by a curtain-severing device (40), approximately tangentially disposed to the coating roller (22) at said impingement locus so as to provide an uncoated margin (48) on the support (20). The curtain-severing device (40) comprises a protruding blade (42) which interrupts the edge portions of the falling curtain (18). Purging liquid is projected onto blade (42) which is disposed at an angle PHI with respect to the direction of travel of the support (20) to divert the purging liquid and the curtain fluids away from the support (20) into the catch basin (28).
Abstract:
Electrostatic painting apparatus include carriers which are not adjustable to accomodate engines of various sizes during the painting process. The apparatus (10) of this invention includes a carrier (12) having a pair of brackets (14) slidably mounted thereon to overcome the above adjustment problem. The brackets function to fully support an engine (W) during the painting process. Each bracket is electrically insulated on the carrier by a non-metallic sleeve (18).
Abstract:
This invention develops a new kind of vertical drawing curtain coating method and apparatus, which contains three main parts: a higher uniform equal-flow distributing coater, a vertical drawing short-curtain, a parallel rotated coating roller and moving webs. This coating method can simultaneously coat one or more than one layer with high uniformity, and is suitable for silver salt or non-silver salt photo-sensitive materials production. It can use a liqud viscosity from 2 to 1,000 mPas at a coating velocity 30 to 300 mm/in to get a coating weight from 20 to 240 ml/m 2 ; and can avoid coating defects such as those usually found in the bead coating and vertical free-falling curtain coating methods.
Abstract translation:本发明开发了一种新型垂直拉丝幕涂布方法和装置,其包括三个主要部分:较高均匀的等流分布涂布机,垂直拉伸短窗帘,平行旋转涂布辊和移动卷筒纸。 该涂布方法可以同时涂覆一层或多层,均匀性好,适用于银盐或非银盐感光材料的生产。 它可以使用2至1,000mPas的液体粘度,涂层速度为30至300mm / in,得到涂层重量为20至240ml / m 2; 并且可以避免涂层缺陷,例如通常在珠粒涂层和垂直自由落下的帘式涂布方法中发现的缺陷。
Abstract:
An extruder (22) for delivering foamed glue from a foamer selectively to a plurality of spaced apart outlet orifices (104) for extrusion onto a substrate surface and to bypass passageways (62) for diverting the foamed glue to a defoamer for subsequent return to the foamer, is formed of three elongated flat blocks (42, 44, 46) secured together releasably in face-abutting relationship. The surface of the outer, inlet (42) and bypass (44) blocks facing the center coupling block (46) are recessed to provide a plurality of passageways all of which extend substantially equal dis. tances from inlet (52. 54, 56) and bypass ports (68. 66, 64) in the inlet and bypass blocks, respectively, to a plurality of coupling ports (26) in the coupling block. An air pressure operated selector valve (80, 82) in the bypass block (44) is operable to communicate the coupling ports selectively with the bypass passageways for bypassing foamed glue to the defoamer and with the outlet orifices for extruding foamed onto a substrate surface.