JPS649833A - Sealing composition for magnetic head and production thereof - Google Patents

Sealing composition for magnetic head and production thereof

Info

Publication number
JPS649833A
JPS649833A JP16451187A JP16451187A JPS649833A JP S649833 A JPS649833 A JP S649833A JP 16451187 A JP16451187 A JP 16451187A JP 16451187 A JP16451187 A JP 16451187A JP S649833 A JPS649833 A JP S649833A
Authority
JP
Japan
Prior art keywords
sio2
magnetic head
sealing composition
resistance
fluidity
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP16451187A
Other languages
Japanese (ja)
Other versions
JPH0764585B2 (en
Inventor
Yasuo Mizuno
Atsushi Nishino
Masaki Ikeda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP16451187A priority Critical patent/JPH0764585B2/en
Publication of JPS649833A publication Critical patent/JPS649833A/en
Publication of JPH0764585B2 publication Critical patent/JPH0764585B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Glass Compositions (AREA)

Abstract

PURPOSE:To provide a sealing composition for magnetic head, containing specific amounts of SiO2, B2O3, PbO, ZnO, Al2O3 and CdO, having a specific SiO2/(SiO2+B2O3) ratio and having excellent fluidity, water-resistance and transparency. CONSTITUTION:The magnetic head-sealing composition of the present invention contains 3-6wt.% of SiO2, 7-11wt.% of B2O3, 74-77wt.% of Pb, 3-5wt.% of ZnO, <1wt.% of Al2O3 and 5-9wt.% of CdO and has an SiO2/(SiO2+B2O3) ratio of >=0.3. The sealing composition can be produced by mixing and melting at least two kinds of different glass composition shown in the Table 2. The sealing composite of the present invention has excellent water-resistance, fluidity and transparency, exhibits fluidity at a low working temperature and practical water-resistance when applied to a magnetic head, etc., and has excellent conformity of thermal expansion coefficient with a head material.
JP16451187A 1987-07-01 1987-07-01 Sealing composition for magnetic head and method for producing the same Expired - Fee Related JPH0764585B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16451187A JPH0764585B2 (en) 1987-07-01 1987-07-01 Sealing composition for magnetic head and method for producing the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16451187A JPH0764585B2 (en) 1987-07-01 1987-07-01 Sealing composition for magnetic head and method for producing the same

Publications (2)

Publication Number Publication Date
JPS649833A true JPS649833A (en) 1989-01-13
JPH0764585B2 JPH0764585B2 (en) 1995-07-12

Family

ID=15794550

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16451187A Expired - Fee Related JPH0764585B2 (en) 1987-07-01 1987-07-01 Sealing composition for magnetic head and method for producing the same

Country Status (1)

Country Link
JP (1) JPH0764585B2 (en)

Also Published As

Publication number Publication date
JPH0764585B2 (en) 1995-07-12

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees