Abstract:
PROBLEM TO BE SOLVED: To provide a method for coating with a coating liquid capable of forming an even film thickness from the beginning of coating a web with the coating liquid and capable of preventing unevenness such as coating streaks, and an apparatus for coating with the coating liquid. SOLUTION: The apparatus 10 for coating the coating liquid on a web surface through a coating liquid bead by discharging the coating liquid from the tip of a slot die 18 toward the surface of the web 14 continuously running while being supported with a backup roller 12 to form a bridge of the coating liquid bead on a clearance H comprises a moving means 60 enabling the slot die 18 to approach and leave the web 14, a moving speed adjusting means 62 adjusting a speed of moving the slot die 18 by the moving means 60, and a control means 64 moving the slot die 18 to leave the web to a steady-state position (b) of a clearance width at a steady-state coating after moving the slot die 18 to approach the web to a coating-start position (a) and keeping it at the coating-start position for a predetermined retention time by controlling the moving means 60. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a coating method and a coater for applying a coating liquid having a viscosity of of ≤10 cp in a wet amount of application of ≤10 cc/m 2 coating, at increased speed. SOLUTION: A die 14 is formed with a lip provided on the downstream side in a travel direction of a web so as to project more to the web side than the lip provided on an upstream side and is formed with a rugged part consisting of a plurality of ruggedness on a land at the top end of the lip on the upstream side. The depth of the ruggedness of the rugged part is ≥5 to ≤500 μm and the pitch of the ruggedness is 50 to ≤500 μm. The application is performed by using the die subjected to matting of the land or ceramic thermal spraying or engraving. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To obtain a large-sized pellicle containing a very small quantity of foreign matter inexpensively by establishing a technique for maintaining/controlling a die of a die coater. SOLUTION: The tip of the die is immersed in or contacted with a coating liquid stored in a vessel or the like. When the die is used, the die is raised upward slowly so that a droplet of the coating liquid is not made to remain at the tip of the die by the surface tension of the coating liquid. Then, the coating liquid is discharged/applied onto a substrate. It is preferable that the die is always immersed in or contacted with the coating liquid except the time when the coating liquid is applied and the coating liquid made to pass through a filter is discharged continuously or intermittently from the tip of the die and the die in the coating liquid is subjected to ultrasonic cleaning at the same time when the die is immersed in or contacted with the coating liquid. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a manufacturing method of a laminate for a HDD suspension by which a polyimide precursor resin solution is finely applied in each layer without incurring mixing between layers even if the resin solution is simultaneously applied by using a multilayered die and performance of each layer is satisfactorily exhibited. SOLUTION: In the manufacturing method of the laminate for the HDD suspension having a construction of a stainless layer/a polyimide resin layer/a conductive layer, a plurality of polyimide precursor resin solutions wherein viscosity values of adjacent resin solutions are changed are ejected from ejection outlets of the multilayered die having a plurality of slit-shaped paths and simultaneously applied on a sheet-shaped substrate of the stainless layer or the conductive layer which constitutes one surface of the HDD suspension, the resultant product is dried and cured to form a plurality of polyimide resin layers on the one surface substrate and then a sheet-shaped substrate for the other surface is superposed on and heat compressed to the outermost layer of the polyimide resin layer. COPYRIGHT: (C)2005,JPO&NCIPI