Title:
INNER MAGNETIC SHIELD MATERIAL FOR CATHODE-RAY TUBE, AND ITS MANUFACTURING METHOD
Document Type and Number:
Japanese Patent JP3698128
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an inner magnetic shield material for a TV cathode-ray tube (CRT) by which excellent press workability, corrosion resistance and spot weldability can be produced and a film can perfectly be decomposed by combustion in a CRT sealing step and a high corrosion resistant film like a blackened film can be formed without forming hematite (red rust).
SOLUTION: A 0.1 to 6μm thickness film of an organic resin composed essentially of C, H or C, H, O or C, H, O and N is formed on the surface of a cold rolled steel strip or a pickled hot rolled steel strip each having 0.2 to 3μm surface roughness Ra. Either or both of (a) 2 to 50 mass%, in total, of at least one coupling agent and (b) 2 to 80 mass%, in total, of at least one metal oxide selected from SiO2, Fe3O4, Fe2O3, Ni-O, Zr-O, Cr2O3 and Al2O3 are incorporated into the organic resin film.
Inventors:
Keiichi Yamanaka
Sakamoto Nao
Kenichiro Kobayashi
Sachio Matsuo
Sakamoto Nao
Kenichiro Kobayashi
Sachio Matsuo
Application Number:
JP2002203749A
Publication Date:
September 21, 2005
Filing Date:
July 12, 2002
Export Citation:
Assignee:
Sumitomo Metal Building Materials Co., Ltd.
International Classes:
C23C26/00; B32B15/08; C21D6/00; C23C22/06; C23C28/00; H01J29/02; H05K9/00; (IPC1-7): H01J29/02; B32B15/08; C21D6/00; C23C22/06; C23C28/00
Domestic Patent References:
| JP2004087131A | ||||
| JP2004083921A | ||||
| JP2004083923A | ||||
| JP2000504472A | ||||
| JP6036702A | ||||
| JP2001129925A | ||||
| JP10330956A | ||||
| JP9122577A | ||||
| JP9041157A | ||||
| JP9078130A |
Attorney, Agent or Firm:
Shoichi Hirose