-
公开(公告)号：JPH09148695A
公开(公告)日：1997-06-06
申请号：JP30578795
申请日：1995-11-24
Applicant: MITSUI TOATSU CHEMICALS
Inventor： SUDO NOBUYUKI , KOJIMA KAZUNORI , KOBAYASHI MASANAO , AIZAWA KOICHI , SHISHIDO SHIGEYUKI , TSUSHIMA TAKAAKI
IPC: B32B15/08 , B32B15/088 , C08G73/10 , H05K1/03 , H05K3/00
Abstract: PROBLEM TO BE SOLVED: To simply enable thick constitution with little warp, by forming a metal foil bonded to one surface of a polyimide film via a thermoplastic polyimide layer, and forming a heat-resistant polyimide layer which is formed by applying heat-resistant polyimide to the other surface and curing polyimide. SOLUTION: In a flexible printed circuit board 1, a metal foil 12 is bonded to one surface of a polyimide film 10, via a thermoplastic polyimide layer 11, and heat-resistant polyimide precursor is spread on the other surface and cured to form a heat-resistant polyimide layer 13. The polyimide layers formed on both sides of the polyimide film 10 symmetrically warp with the same tensions, while sandwiching the polyimide film 10, so that the warps cancel each other. As a result, practically serious warp is not generated. The upper limit of the polyimide film thickness does not exist. If necessary, by using a thick polyimide film 10, the flexible printed circuit board can be thickened.
-
公开(公告)号：JPH09142739A
公开(公告)日：1997-06-03
申请号：JP30293995
申请日：1995-11-21
Applicant: MITSUI TOATSU CHEMICALS
Inventor： TSUSHIMA TAKAAKI , SUDO NOBUYUKI , KOJIMA KAZUNORI , KOBAYASHI MASANAO , AIZAWA KOICHI , SHISHIDO SHIGEYUKI
Abstract: PROBLEM TO BE SOLVED: To reduce a height difference occurring in the leading end edge part of a metal plastic laminating material by covering the outer peripheral surface of a bobbin on which the laminating material is wound, with a cushion material having a specified compressive stress. SOLUTION: A bobbin 1 is composed of a hard paper cylindrical core 10, and a cushion material 11 with which the outer peripheral surface of the core 10 is covered. The thickness of the cushion material 11 is most preferably be about 2 to 3mm. The metal plastic laminating material 2 is thin and band-like, and is stuck at its leading end edge part onto the outer surface of the bobbin 1 by a double-surface adhesive tape. The bobbin 1 is rotated in the winding direction so as to wind up the laminating material onto the bobbin under a winding tension of about 2 to 3kgf per winding width of about 30cm. With this arrangement, the cushion material 11 is retained by the leading end edge part of the metal plastic laminating material 2 so as to be recessed, thereby it is possible substantially eliminate a height difference between the leading end edge of the metal plastic laminating material 2 and the outer peripheral surface of the cylindrical bobbin 1.
-
公开(公告)号：JPH0770335A
公开(公告)日：1995-03-14
申请号：JP21715793
申请日：1993-09-01
Applicant: MITSUI TOATSU CHEMICALS
Inventor： KIJIMA SHIGEKI , YAMANAKA HIDESUKE , SUDO NOBUYUKI , AIZAWA KOICHI , SHISHIDO SHIGEYUKI , TSUSHIMA TAKAAKI , KOJIMA KAZUNORI
IPC: B29C65/02 , B29C59/10 , B29C59/14 , B29C65/00 , B29C65/14 , B29K79/00 , C08J5/12 , C08J7/00 , H05K3/38
Abstract: PURPOSE:To stably and firmly bond two thermoplastic polyimide substrates to each other by modifying the surfaces of the substrates under electric discharge at the temp. of the surfaces equal to or higher than the glass transition temperature of the polyimide and thermally pressing the substrates to each other at the glass transition temperature or higher. CONSTITUTION:Thermoplastic polyimide substrates 61 and 62 are fed from rolls 51 and 52 and heated with preheaters 15 and 15 and heaters 17 and 17 to raise the surface temp. to the glass transition temperature of the polyimide or higher. Then, the surfaces of the subsrates 61 and 62 are modified by electric discharge, such as corona or plasma treatment, with a rodlike electrode 11. The substrates 61 and 62 are then fed to a heat-press roll 13 while keeping the surfaces at the glass transition temperature or higher, thermally pressed to each other, and wound up with a roll 53. The resulting laminate 63 is uniform in quality, has a high peeling strength, and exhibits no defects such as blisters or separation.
-
公开(公告)号：JPH06335991A
公开(公告)日：1994-12-06
申请号：JP12683293
申请日：1993-05-28
Applicant: MITSUI TOATSU CHEMICALS
Inventor： KIJIMA SHIGEKI , YAMANAKA HIDESUKE , AIZAWA KOICHI , SHISHIDO SHIGEYUKI , TSUSHIMA TAKAAKI , SUDO NOBUYUKI
IPC: B29C43/46 , B29C63/02 , B32B15/08 , B32B15/088 , F16C13/00
Abstract: PURPOSE:To obtain a heat-resistant resin coated elastic roll putting the characteristics of an ultrahigh heat-resistant resin excellent in heat resistance, chemical resistance and fire retardancy to practical use by coating a metal core roll with thermoplastic polyimide. CONSTITUTION:A thermoplastic polyimide layer may be composed of a single layer or a multilayer structure of polyimides having different glass transition points. When this roll is used under a temp. and pressure condition obtaining the elastic characteristics of a resin, it becomes a heat resistant resin coated elastic roll. Further, a thermoplastic polyimide soln. or a polyamide acid soln. being a precursor of thermoplastic polyimide is applied to a metal core roll. A non-thermoplastic polyamide acid soln. is applied to the polyamide acid soln. layer and heated, dried and cured for a sufficient time to obtain a heat-resistant resin coated elastic roll composed of an inclination material of thermoplastic polyimide and non-thermoplastic polyimide.
-
公开(公告)号：JPH04351907A
公开(公告)日：1992-12-07
申请号：JP12711191
申请日：1991-05-30
Applicant: MITSUI TOATSU CHEMICALS
Inventor： MIURA HITOSHI , AIZAWA KOICHI , ONOBUSA MITSUO
Abstract: PURPOSE:To continously and precisely measure the rate-of-change of the width in line between the feeding side and the winding side of a sheet-like member which is carried on a line. CONSTITUTION:In a width measuring device comprising light sources 2 and 2', CCD cameras 3 and 3', camera controllers 4 and 4', and displays 5 and 5', by mechanism 6 and 6' for detecting that the measured area at the feeding side measurement point in a sheet-like member 1 reaches at the winding side measurement point, the width data measured at the feeding side measurement point and the width data of the same location measured at the winding side measurement point are sequentially compared with each other by a processing device 7 containing a storing-oparating function, so that the rate-of-change of the width of the sheet-like member at the feeding side and at the winding side is continously determined, and the resulted value is displayed at a display 5'' as well as being continously recorded in a recorder.
-
Patent Agency Ranking
公开(公告)号：JPS6480531A
公开(公告)日：1989-03-27
申请号：JP23749387
申请日：1987-09-24
Applicant: MITSUI TOATSU CHEMICALS
Inventor： YOSHIDA SHUNJI , SATO TAKUSHI , MORITA MORIJI , YAMANAKA HIDESUKE , AIZAWA KOICHI
Abstract: PURPOSE:To correct the dimension difference between layers effectively by sliding a continuous flexible metal foil laminated layer having a metal foil and a polymer film in the tensioned state in the longitudinal direction, with polymer on the inner side, on the curved surface of a specific bar. CONSTITUTION:A continuous flexible metal foil laminate (FMCL) having a metal foil and a polymer film is slided in the tensioned state in the longitudinal direction, with the polymer on the inner side, on the curved surface of a bar provided at an angle of 0-80 degrees in the width direction. Further, FMCL is slided in the tensioned state in the longitudinal direction, with the polymer on the inner side, on the curved surface of a bar provided at an angle of 0--80 degrees in the FMCL width direction. Either or both of the two processes are carried out one or more to correct the dimension difference between the FMCL metal foil layer and the polymer layer. The suitable tension at the time of the tensioned state is 50g/cm or more, while the suitable FMCL temperature is 200 deg.C or lower.
-
公开(公告)号：JPH09272176A
公开(公告)日：1997-10-21
申请号：JP8413096
申请日：1996-04-05
Applicant: MITSUI TOATSU CHEMICALS
Inventor： SUDO NOBUYUKI , KOJIMA KAZUNORI , KOBAYASHI MASANAO , AIZAWA KOICHI , SHISHIDO SHIGEYUKI , TSUSHIMA TAKAAKI
IPC: B05D7/24 , B29C43/28 , B29C63/02 , B29K79/00 , B29K105/06 , B32B15/08 , B32B15/088 , H05K3/02
Abstract: PROBLEM TO BE SOLVED: To prepare in a short time and inexpensively a large amt. of high quality metal foil polyimide laminated boards by a method wherein metal foils are laminated through a polyimide layer dried with hot air in a hot-air drying oven and they are contact-bonded and laminated together by means of pressure rollers. SOLUTION: A copper foil 10 and a stainless steel thin sheet 11 between which a polyimide film 12 is placed are fed into a hot air drying oven 22 and they are contact-bonded by means of pressure rollers 20 and 21 but before that, as they are heated with dry hot air at 250 deg.C blown out from a hot air blowing apparatus and are dehumidified and dried, the copper foil 10 and the stainless steel thin sheet 11 are strongly bonded and laminated to obtain a continuous laminated board 1a, which is transferred to a width adjusting device 3. A shearing device 4 cuts a width-adjusted laminated sheet 1c forwarded from the width adjusting device 3 to a specified length by means of a cutter 40 and a number of metal foil polyimide laminated boards 1 with a definite length are forwarded outside.
-
公开(公告)号：JPH08236882A
公开(公告)日：1996-09-13
申请号：JP3713595
申请日：1995-02-24
Applicant: MITSUI TOATSU CHEMICALS
Inventor： KOJIMA KAZUNORI , SUDO NOBUYUKI , KOBAYASHI MASANAO , AIZAWA KOICHI , SHISHIDO SHIGEYUKI , TSUSHIMA TAKAAKI , KIJIMA SHIGEKI
Abstract: PURPOSE: To obtain a printed wiring board easy to perform shaping work such as boring, etc., and excellent in the precision of working by using a laminate wherein sheets of metal foil are being stuck to both surfaces of an aramid film being a base material, interposing a thermoplastic polyimide layer obtained by causing a tetrcarboxylic acid dianhydride to perform polycondensation. CONSTITUTION: Thermoplastic polyimide varnish is applied over to each single surface of sheets of metal foil 11, 12 and both surfaces of an aramid film 14, and its solvent is removed in a continuous conveyance system drying furnace, and long thermopalstic-polyimide-applied metal foil and an aramid film with thermoplastic polyimide on both sides are obtained. These are pressed continuously by using a hot roll press to obtain a long double-sided metal foil/aramid film laminate 10. The thermoplastic polyimide layer of this is exposed by metal foil etching operation. Besides, shaping work such as through hole forming, etc., can be performed by removing parts of the thermoplastic polyimide layer exposed and the aramid film being its lower layer.
-
公开(公告)号：JPH07193349A
公开(公告)日：1995-07-28
申请号：JP33198493
申请日：1993-12-27
Applicant: MITSUI TOATSU CHEMICALS
Inventor： KIJIMA SHIGEKI , YAMANAKA HIDESUKE , AIZAWA KOICHI , SHISHIDO SHIGEYUKI , TSUSHIMA TAKAAKI , TAKAGI SHIGEYUKI
IPC: H05K1/03 , B32B15/08 , B32B15/088 , H05K3/00
Abstract: PURPOSE:To obtain an all polyimide metal foil laminated board, which is superior in heat resistance and in the formation of a pattern, by a method wherein a superthin polyimide layer thinner than a metal foil is formed on the metal foil, a superthin polyimide layer is formed on a polyimide film, and the film and the foil are combined with each other and are thermocompression bonded via the polyimide layers. CONSTITUTION:A polyimide varnish is continuously cast and applied on a metal foil 11 and/or a polyimide film 14 in such a way that the thickness of superthin polyimide layers 12 subsequent to the completion of an imidation reaction becomes thinner than that of the foil 11 and thereafter, is heated to remove a solvent. Thereby, a long superthin polyimide/metal foil laminated board 13, a superthin polyimide/polyimide film laminated board 15 or a superthin polyimide/polyimide film/superthin polyimide laminated material, which consists of the superthin polyimide layer 12 having the thickness thinner than that of the foil 11 and the foil 11, the layer 12 and the film 14 or the layer 12, the film 14 and the layer 12, is obtained. These laminated boards and the film 14 and the foil 11 are combined with each other and are heated and pressure bonded via the layers 12 to laminated.
-
公开(公告)号：JPH07188428A
公开(公告)日：1995-07-25
申请号：JP33198593
申请日：1993-12-27
Applicant: MITSUI TOATSU CHEMICALS
Inventor： KIJIMA SHIGEKI , SUDO NOBUYUKI , AIZAWA KOICHI , SHISHIDO SHIGEYUKI , TSUSHIMA TAKAAKI , KOJIMA KAZUNORI , YAMANAKA HIDESUKE
Abstract: PURPOSE:To provide a method by which the effect of a surface modification treatment can be prevented from being lost and the adherence of a thermoplastic polyimide can be improved and stabilized even when the degree of the treatment is relatively low. CONSTITUTION:A surface of a thermoplastic polyimide heated to a temp. (a) not lower than its glass transition temp. is treated with ozone and, immediately thereafter, bonded to an adherend with application of heat and pressure, while the surface is kept at the temp. (a).
-
-
-
-
-
-
-
-
-
Search Results
28
records
(took 0.022 seconds)
