JPS5478540A - Sheathed heater and making method thereof - Google Patents

Sheathed heater and making method thereof

Info

Publication number
JPS5478540A
JPS5478540A JP14674977A JP14674977A JPS5478540A JP S5478540 A JPS5478540 A JP S5478540A JP 14674977 A JP14674977 A JP 14674977A JP 14674977 A JP14674977 A JP 14674977A JP S5478540 A JPS5478540 A JP S5478540A
Authority
JP
Japan
Prior art keywords
sheathed heater
insulating property
insulator
heater
powder containing
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
JP14674977A
Other languages
Japanese (ja)
Other versions
JPS5549396B2 (en
Inventor
Yoshihiro Matsuo
Hidesato Kawanishi
Masanori Fujimura
Noboru Naruo
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 JP14674977A priority Critical patent/JPS5478540A/en
Publication of JPS5478540A publication Critical patent/JPS5478540A/en
Publication of JPS5549396B2 publication Critical patent/JPS5549396B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Resistance Heating (AREA)

Abstract

PURPOSE: To raise the insulating property, by using magnesia powder containing 1 to 30 % by weight of inorganic drying material as an insulator for the sheathed heater and by sealing up the terminal parts of the heater with varnish etc.
CONSTITUTION: The magnesia powder containing, for example, a CaO-SiO2 com- pound is used as the insulator 5 for the sheathed heater to dry moisture invading into a pipe. The terminal parts are sealed up with rubber, resin or varnish having an electric insulating property and a flame retarding property. Even under a strong electric field, hydrogen ions or hydroxyl ions are prevented from moving,. As a result, the insulating property is heightened.
COPYRIGHT: (C)1979,JPO&Japio
JP14674977A 1977-12-06 1977-12-06 Sheathed heater and making method thereof Granted JPS5478540A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14674977A JPS5478540A (en) 1977-12-06 1977-12-06 Sheathed heater and making method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14674977A JPS5478540A (en) 1977-12-06 1977-12-06 Sheathed heater and making method thereof

Publications (2)

Publication Number Publication Date
JPS5478540A true JPS5478540A (en) 1979-06-22
JPS5549396B2 JPS5549396B2 (en) 1980-12-11

Family

ID=15414714

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14674977A Granted JPS5478540A (en) 1977-12-06 1977-12-06 Sheathed heater and making method thereof

Country Status (1)

Country Link
JP (1) JPS5478540A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5749189A (en) * 1980-09-08 1982-03-20 Matsushita Electric Ind Co Ltd Sheathed heater and method of producing same
JPS57202083A (en) * 1981-06-03 1982-12-10 Matsushita Electric Ind Co Ltd Sheathed heater

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50144152A (en) * 1974-05-10 1975-11-19
JPS52118299A (en) * 1976-03-30 1977-10-04 Sakai Shiyuuichi Powder material for nonnmoistureeabsorbing electric insulato5r

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50144152A (en) * 1974-05-10 1975-11-19
JPS52118299A (en) * 1976-03-30 1977-10-04 Sakai Shiyuuichi Powder material for nonnmoistureeabsorbing electric insulato5r

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5749189A (en) * 1980-09-08 1982-03-20 Matsushita Electric Ind Co Ltd Sheathed heater and method of producing same
JPS6322034B2 (en) * 1980-09-08 1988-05-10 Matsushita Electric Ind Co Ltd
JPS57202083A (en) * 1981-06-03 1982-12-10 Matsushita Electric Ind Co Ltd Sheathed heater
JPH0136239B2 (en) * 1981-06-03 1989-07-28 Matsushita Electric Ind Co Ltd

Also Published As

Publication number Publication date
JPS5549396B2 (en) 1980-12-11

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