Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Reexamination Certificate
2000-11-06
2003-12-16
Johnstone, Adrienne C. (Department: 1733)
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
C156S272200, C156S273300, C156S273700, C156S275700, C156S498000, C369S286000
Reexamination Certificate
active
06663744
ABSTRACT:
The invention relates to a method for heat treatment of a disc, whereby the disc is placed on a carrier after which the disc is irradiated.
The invention also relates to a device for heat treatment of a disc according to said method.
By such a method and device, which are known from the international patent application WO 97/36738 a disc comprising two disc elements with an adhesive layer between them, is placed on a carrier after which the disc is irradiated by UV light and the adhesive layer is cured.
The UV light will also heat up the carrier and when a new disc is placed on the carrier, the disc will be warped due to the temperature difference which occurs between the disc element located on the carrier and the other disc element. The time between placing the disc onto the carrier and the irradiation of the disc is too short to stabilize the temperature of the disc. It is an object of the invention to provide a method whereby undesired warping of the disc is avoided.
This object is achieved in that during the irradiation the carrier is kept on a desired temperature.
By controlling the temperature of the carrier, the warping of the disc can also be controlled.
In a preferred embodiment of the method according to the invention the desired temperature of the carrier is about the temperature of the disc prior to placement on the carrier.
In this way the disc will not be subjected to a change of temperature.
If, however, a certain controlled warp is desired, for example to have a compensation for a tilt during a later process step, the temperature of the carrier is kept at another predetermined value.
In another preferred embodiment a method according to the invention the disc comprises two disc elements and an adhesive layer between the disc elements, whereby the adhesive layer is cured by the irradiation with ultraviolet light.
Due to the vacuum the disc is kept flat against the carrier. Furthermore a good contact between the disc and the carrier is obtained due to which the heat transfer function is the same all across the disc.
REFERENCES:
patent: 5779855 (1998-07-01), Amo et al.
patent: 5900098 (1999-05-01), Mueller et al.
patent: 2002/0108715 (2002-08-01), Higaki et al.
patent: 8-87779 (1996-04-01), None
patent: 10255339 (1998-09-01), None
Patent Abstracts of Japan vol. 096, No. 008, Aug. 30, 1996 & JP 08 087779 A (NKK Corp; Dainippon Ink & Amp; Chem Inc), Apr. 2, 1996, see abstract.
Patent Abstracts of Japan vol. 016, No. 103 (M-1221), Mar. 13, 1992 & JP 03 278938 A (Hitachi Metals Ltd), Dec. 10, 1991, see abstract.
Patent Abstracts of Japan, vol. 007, No. 183 (M-235), Aug. 12, 1983 & JP 58 084730 A ( Sanyo Denki KK), May 20, 1983 see abstract.
Patent Abstracts of Japan, vol. 010, No. 338 (P-156), Nov. 15, 1986 & JP 61 139957 A (Matsushita Electric Ind Co Ltd.), Jun. 27, 1986, see abstract.
Patent Abstracts of Japan vol. 097, No. 010, Oct. 31, 1997 & JP 09 147425 A (Dainippon Ink & Amp; Chem Inc ), Jun. 6, 1997, see abstract.
Patent Abstracts of Japan vol. 010, No. 147 (P-460), May 29, 1986 & JP 60 263354 A ( Nippon Denki KK), Dec. 26, 1985, see abstract.
Patent Abstracts of Japan vol. 013, No. 054 (P-824), Feb. 8, 1989 & JP 63-244429 A (Hitachi Chem Co Ltd), Oct. 11, 1988, see abstract.
Patent Abstracts of Japan vol. 017, No. 477 (P-1603), Aug. 30, 1993 & JP 05 114174 A (Ricoh Co Ltd ), May 7, 1993, see abstract.
Patent Abstracts of Japan, vol. 010 No. 316 (P-510), Oct. 28, 1986 & JP 61 126648 A ( Nippon Telegr & Teleph Corp ) Jun. 14, 1986, see abstract.
Patent Abstracts of Japan, vol. 011, No. 181 (P-585), Jun. 11, 1987 & JP 62 009547 A (Matsushita Electric Ind Co Ltd.), Jan. 17, 1987, see abstract.
Database WPI, Section EI, Week 9841 Derwent Publications Ltd., London, GB; AN 98-472383 XP002083229 & JP 10 199053 A ( Origin Electric Co Ltd), Jul. 31, 1998, see abstract.
Bering Lars Gustaf Magnus
Eriksson Claes Lannart
Eriksson Lars Göran
Karlsson Rolf Tommy Nils
Öhman Per Ove
Johnstone Adrienne C.
OTB Group B.V.
Pillsbury & Winthrop LLP
LandOfFree
Method and device for heat treatment of a disc does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and device for heat treatment of a disc, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and device for heat treatment of a disc will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3096491