KR960025379A

KR960025379A - Manufacturing method of coating type magnetic recording medium

Info

Publication number: KR960025379A
Application number: KR1019940038985A
Authority: KR
Inventors: 문치욱; 박혁상; 김창곤
Original assignee: 안시환; 주식회사 에스케이씨
Priority date: 1994-12-29
Filing date: 1994-12-29
Publication date: 1996-07-20

Abstract

본 발명은 도포형 자기기록 매체의 제조 방법에 관한 것이다. 자성체, 결합제, 카본블랙, 연마제, 윤활제, 경화제 및 유기용제를 함유하는 자성도료를 비자성 지지체 위에 도포, 건조, 캘린더링, 슬리팅하는 것을 포함하는 자기기록 매체의 제조 방법에 있어서, 상기 자성도료가, 상기 유기용제의 일부에 결합제를 첨가하여 혼합유기용제를 준비하는 단계, 카본블랙 및 연마제를 혼합하는 단계, 배치식 혼련혼합기에서 상기 혼합 유기용제의 일부를 상기 카본블랙 및 연마제 고형분에 미량씩 투입하여 혼련하는 단계 및 상기 혼합 유기용제의 나머지를 상기 혼련물에 미량씩 투입, 희석하여 카본블랙 및 연마제의 혼련 희석물을 제조하는 단계, 상기 자성체에 상기 유기용제를 투입하여 혼련, 희석하는 단계 및 상기 자성체의 혼련 희석물에 상기 카본블랙 및 연마제 희석물, 상기 결합제, 상기 경화제, 상기 윤활제 및 상기 유기용제를 첨가하는 단계를 통하여 얻어지는 것을 특징으로 하여 제조된 도포형 자기기록 매체는 카본블랙을 첨가한 경우 및 첨가하지 않은 경우의 장점을 모두 가짐으로써 자기특성, 주행성, 표면평활성 등의 각 특성이 우수하다.The present invention relates to a method of manufacturing a coated magnetic recording medium. A method of manufacturing a magnetic recording medium comprising applying, drying, calendering, and slitting a magnetic paint containing a magnetic substance, a binder, carbon black, an abrasive, a lubricant, a curing agent, and an organic solvent on a nonmagnetic support. (A) adding a binder to a portion of the organic solvent to prepare a mixed organic solvent, mixing carbon black and an abrasive, and a portion of the mixed organic solvent in a batch kneader in a trace amount to the carbon black and the abrasive solid Adding and kneading, and mixing and diluting the remainder of the mixed organic solvent in small amounts in the kneaded product to prepare a kneading dilution of carbon black and an abrasive, and mixing and diluting the organic solvent in the magnetic body. And the carbon black and abrasive diluent, the binder, the curing agent, the lubricant, and the kneading dilution of the magnetic material. The coated magnetic recording medium produced by adding the organic solvent has the advantages of both adding and not adding carbon black, and thus have characteristics such as magnetic properties, running properties, and surface smoothness. This is excellent.

Description

Manufacturing method of coating type magnetic recording medium

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

Claims

A method of manufacturing a magnetic recording medium comprising applying, drying, calendering, and slitting a magnetic paint containing a magnetic substance, a binder, carbon black, an abrasive, a lubricant, a curing agent, and an organic solvent on a nonmagnetic support. A step of preparing a mixed organic solvent by adding a binder to a part of the organic solvent; Mixing the carbon black and the abrasive; Mixing a portion of the mixed organic solvent into the carbon black and the abrasive solid in small amounts in a batch kneading mixer to knead the mixture; And mixing and diluting the remainder of the mixed organic solvent in a small amount into the kneaded product to prepare kneaded diluent of carbon black and abrasive. Adding the organic solvent to the magnetic material to knead and dilute; And adding the carbon black and the abrasive diluent, the binder, the curing agent, the lubricant, and the organic solvent to the kneading dilution of the magnetic strip.

The method of manufacturing a coated magnetic recording medium according to claim 1, wherein the kneading of the carbon black and the abrasive is made such that the binder in the organic solvent is 10 to 100 parts by weight based on the total weight of the carbon black and the abrasive.

The method of manufacturing the coated magnetic recording medium according to claim 1, wherein the magnetic paint contains 0.5 to 5.0 parts by weight of carbon black with respect to the magnetic strip.

The method of manufacturing a coated magnetic recording medium according to claim 1, wherein the magnetic paint contains 7 to 9 parts by weight of an abrasive with respect to the magnetic material.

※ Note: The disclosure is based on the initial application.