Title:
CATHODE RAY TUBE INNER MAGNETIC SHIELD MATERIAL, AND METHOD FOR MANUFACTURING THE SAME
Document Type and Number:
Japanese Patent JP3698127
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an inner magnetic shield material for a TV cathode ray tube, which has excellent pressing property, corrosion resistance and spot weldability and in which a coating film is completely burned and decomposed in a cathode ray tube sealing step to deposit the corrosion-resistant film similar to a blacked film without generating any hematite (red rust).
SOLUTION: A film of an organic resin consisting of, substantially, C and H, or C, H and O, or C, H, O and N of the thickness of 0.1-6 μm is deposited on a surface of a cold-rolled steel strip or a pickled hot-rolled steel strip of the surface roughness of 0.2-3 μm Ra. This organic resin film contains a wax dispersed in the film. The ratio (&phiv /T) of the wax grain size &phiv to the thickness T of the organic resin film is 0.5-5. The wax content is determined so that the area ratio of the wax is 2-20% when the film surface is observed by an electron microscope.
Inventors:
Keiichi Yamanaka
Sakamoto Nao
Kenichiro Kobayashi
Sachio Matsuo
Sakamoto Nao
Kenichiro Kobayashi
Sachio Matsuo
Application Number:
JP2002203748A
Publication Date:
September 21, 2005
Filing Date:
July 12, 2002
Export Citation:
Assignee:
Sumitomo Metal Building Materials Co., Ltd.
International Classes:
C23C22/00; B32B15/08; C21D6/00; C23C22/06; C23C22/78; C23C28/00; H01F27/36; H01J29/02; H05K9/00; (IPC1-7): H01J29/02; B32B15/08; C21D6/00; C23C22/06; C23C28/00
Domestic Patent References:
| JP2004083920A | ||||
| JP2004083922A | ||||
| JP2004083923A | ||||
| JP2000504472A | ||||
| JP6036702A | ||||
| JP2001129925A | ||||
| JP10330956A | ||||
| JP9122577A | ||||
| JP9041157A | ||||
| JP9078130A |
Attorney, Agent or Firm:
Shoichi Hirose