KR900004297Y1 - Magnetic recording tape - Google Patents

Magnetic recording tape Download PDF

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Publication number
KR900004297Y1
KR900004297Y1 KR2019860003223U KR860003223U KR900004297Y1 KR 900004297 Y1 KR900004297 Y1 KR 900004297Y1 KR 2019860003223 U KR2019860003223 U KR 2019860003223U KR 860003223 U KR860003223 U KR 860003223U KR 900004297 Y1 KR900004297 Y1 KR 900004297Y1
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KR
South Korea
Prior art keywords
magnetic recording
recording tape
magnetic
layer
tape
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Application number
KR2019860003223U
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Korean (ko)
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KR870015335U (en
Inventor
김해천
Original Assignee
주식회사 금성사
구자학
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Priority to KR2019860003223U priority Critical patent/KR900004297Y1/en
Publication of KR870015335U publication Critical patent/KR870015335U/en
Application granted granted Critical
Publication of KR900004297Y1 publication Critical patent/KR900004297Y1/en

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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/72—Protective coatings, e.g. anti-static or antifriction
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04—Coating
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/04—Polyurethanes
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
    • G11B5/8408—Processes or apparatus specially adapted for manufacturing record carriers protecting the magnetic layer
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
    • C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/90—Tape-like record carriers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/90—Magnetic feature

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Magnetic Record Carriers (AREA)
  • Paints Or Removers (AREA)

Abstract

내용 없음.No content.

Description

자기기록 테이프Magnetic recording tape

제1도는 종래의 자기기록 테이프를 보인 단면도.1 is a cross-sectional view showing a conventional magnetic recording tape.

제2도는 본 고안에 의한 자기기록 테이프를 보인 단면도.2 is a cross-sectional view showing a magnetic recording tape according to the present invention.

제3도는 본 고안에 의한 자기기록 테이프와 종래의 자기기록 테이프의 정지 화면시 출력감소 상태를 비교하여 보인 그래프.3 is a graph showing a comparison of the state of output reduction in the still image of the magnetic recording tape and the conventional magnetic recording tape according to the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1 : PET 필름 2 : 자성층1: PET film 2: Magnetic layer

3 : 포면보호층 4 : 폴리우레탄 수지층3: surface protection layer 4: polyurethane resin layer

본 고안은 철, 코발트, 니켈 또는 이들의 합금인 강자성체 재질의 금속을 PET 필름상에 증착시키는 금속증착형 자기기록 테이프에 관한 것으로, 특히 자성층과 PET 필름간의 밀착성을 높여 테이프의 내구성 및 내마모성을 향상시킬 수 있게한 자기기록 테이프에 관한 것이다.The present invention relates to a metal deposition type magnetic recording tape which deposits a ferromagnetic metal such as iron, cobalt, nickel, or an alloy thereof on a PET film, and in particular, improves the adhesiveness between the magnetic layer and the PET film and improves the durability and wear resistance of the tape. A magnetic recording tape made possible.

종래의 금속증착형 자기기록 테이프는 제1도에 도시한 바와같이 PET필름(1)상에 강자성체 재질의 금속을 증착하여 자성층(2)을 형성하고, 자성층(2) 상에는 표면보호층(3)을 형성하며, 이때 표면보호층(3)의 두께가 두꺼우면 재생시 스페이싱 로스(spacing loss)를 유발하여 출력을 감소시키는 원인이 되므로 대략 300A 이하로 가능한한 얇게 형성한다.In the conventional metal deposition type magnetic recording tape, as shown in FIG. 1, a ferromagnetic metal is deposited on the PET film 1 to form a magnetic layer 2, and the surface protective layer 3 is formed on the magnetic layer 2. In this case, if the thickness of the surface protective layer 3 is thick, it causes spacing loss during regeneration, thereby reducing the output power, and is formed as thin as possible below about 300A.

이와같이된 종래의 금속증착형 자기기록 테이프는 도포형 자기기록 테이프에 비해 고주파 영역에서의 자기특성이 우수하여 고밀도용 자기기록 매체로 많이 사용되고 있으나, 자성층(2)의 두께가 0.1-0.2정도로 매우 얇고, 또한 그 자성층(2)과 필름(1)간의 밀착성이 낮아 장시간 사용하면 필름(1)에서 자성층(2)이 떨어져나가게 되는 등 내구성 및 내마모성이 나쁜 결함이 있었다.Conventional metal-deposited magnetic recording tapes have been used as high-density magnetic recording media because of their excellent magnetic properties in the high frequency range compared to the coated magnetic recording tapes, but the thickness of the magnetic layer 2 is 0.1-0.2. It was very thin, and the adhesiveness between the magnetic layer 2 and the film 1 was low, and when used for a long time, the magnetic layer 2 would come off from the film 1, resulting in poor durability and wear resistance.

본 고안은 이와같은 종래의 결함을 감안하여, 필름과 자성층 사이에 폴리우레탄 수지층을 형성함으로써 자성층의 밀착성을 향상시켜 테이프의 내구성 및 내마모성을 증대시키게 안출한 것으로, 이를 첨부된 제2도 및 제3도의 도면에 의하여 상세히 설명하면 다음과 같다.The present invention, in view of such a conventional defect, by forming a polyurethane resin layer between the film and the magnetic layer to improve the adhesion of the magnetic layer to increase the durability and wear resistance of the tape, which is attached to the second and second When described in detail with reference to Figure 3 as follows.

제2도는 본 고안에 의한 자기기록 테이프를 보인 단면도로서 이에 도시한 바와같이 폴리우레탄 수지에 경화제를 혼합하여 이를 용매에 희석하고, 습식 건조로에서 PET 필름(1)상에 코팅한 후 열풍 건조로에서 건조하고, 경화시켜 폴리우레탄 수지층(4)을 형성하며, 그 폴리우레탄 수지층(4)의 상부에는 종래와 마찬가지로 자성층(2) 및 표면 보호층(3)을 형성한 것이다.2 is a cross-sectional view showing a magnetic recording tape according to the present invention, as shown therein, a curing agent is mixed with a polyurethane resin, diluted in a solvent, coated on a PET film (1) in a wet drying furnace, and then dried in a hot air drying furnace. Then, the polyurethane resin layer 4 is formed by curing, and the magnetic layer 2 and the surface protective layer 3 are formed on the polyurethane resin layer 4 in the same manner as in the prior art.

이와같이 된 본 고안의 자기기록 테이프를 실험예로 설명한다.The magnetic recording tape of the present invention thus obtained will be described as an experimental example.

[실험예]Experimental Example

폴리우레탄 수지 N3135(일본 우레탄사 제품)와 경화제 C3041(일본 우레탄사 제품)을 8 : 2의 비율로 혼합하고, 이를 MEK와 틀루엔을 1 : 1의 비율로 혼합한 용매에 5%로 희석하여 습식 코팅기에서 필름(1)상에 코팅한 후 100의 열풍으로 경화시켜 폴리우레탄 수지층(4)을 형성하고, 그 위에 자성층(2) 및 표면 보호층(3)을 형성하였다.Polyurethane resin N3135 (manufactured by Nippon Urethane Co., Ltd.) and curing agent C3041 (manufactured by Nippon Urethane Co., Ltd.) were mixed at a ratio of 8: 2, diluted with 5% in a solvent mixed with MEK and toluene at a ratio of 1: 1. 100 after coating onto film (1) in a wet coater The polyurethane resin layer 4 was formed by curing with hot air, and the magnetic layer 2 and the surface protective layer 3 were formed thereon.

이와같이 된 본 고안은 금속증착형 자기 테이프와 종래의 금속증착형 자기 테이프를 8㎜ 비디오 테이프 레코오더에 내장하고, 정지 화면시 출력의 감소로 상대적인 내구성 및 내마모성을 측정하여 제3도에 도시한 그래프를 얻었다.In this way, the present invention incorporates a metal-deposited magnetic tape and a conventional metal-deposited magnetic tape into an 8 mm video tape recorder, and measures the relative durability and wear resistance by reducing the output at a still image. Got.

제3도의 그래프에서 알 수 있는 바와같이 본 고안에 의한 금속증착형 자기기록 테이프는 종래의 자기기록 테이프에 비하여 출력의 지속시간이 길고 따라서 테이프의 내구성 및 내마모성이 매우 향상됨을 알 수 있다.As can be seen from the graph of FIG. 3, the metal-deposited magnetic recording tape according to the present invention has a longer output duration compared to the conventional magnetic recording tape, and thus, the durability and wear resistance of the tape can be improved.

Claims (1)

PET 필름(1)에 자성층(2) 및 표면 보호층(3)을 형성한 금속증착형 자기기록 테이프에 있어서, 상기의 PET 필름(1)과 자성층(2) 사이에 폴리우레탄 수지층(4)을 형성하여 구성한 것을 특징으로 하는 자기기록 테이프.In a metal-deposited magnetic recording tape having a magnetic layer (2) and a surface protective layer (3) formed on a PET film (1), the polyurethane resin layer (4) is formed between the PET film (1) and the magnetic layer (2). Magnetic recording tape, characterized in that formed by forming.
KR2019860003223U 1986-03-18 1986-03-18 Magnetic recording tape KR900004297Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019860003223U KR900004297Y1 (en) 1986-03-18 1986-03-18 Magnetic recording tape

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019860003223U KR900004297Y1 (en) 1986-03-18 1986-03-18 Magnetic recording tape

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Publication Number Publication Date
KR870015335U KR870015335U (en) 1987-10-24
KR900004297Y1 true KR900004297Y1 (en) 1990-05-17

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KR2019860003223U KR900004297Y1 (en) 1986-03-18 1986-03-18 Magnetic recording tape

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KR870015335U (en) 1987-10-24

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