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8067105 |
Biaxially oriented film
A thin biaxially oriented film excellent in dimensional stability against humidity change, as well as a magnetic recording medium and a film capacitor using the same. The present invention provides...
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7960045 |
Magnetic recording medium and method of manufacturing the same
An aspect of the present invention relates to a magnetic recording medium comprising a coating layer on a nonmagnetic support, wherein the coating layer comprises a nonmagnetic layer comprising a...
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7871691 |
Oriented polyester film
An object of the invention is to provide such an oriented polyester film that has a constant thickness, and is excellent in dimensional stability at a high temperature and dimensional stability to...
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7608349 |
Polyester film for recording medium and magnetic recording tape
A polyester film for recording medium, having one major surface thereof provided with a coating layer containing fine particles of 5 to 60 nm diameter and an organic compound, wherein the number of...
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7582369 |
Biaxially oriented polyester film
A biaxially oriented polyester film wherein the microscopic Raman crystallization index Ic measured in the film thickness direction is in a range of 8 cm−1 to 15 cm−1 and the difference between the...
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7381485 |
Magnetic recording tape
A magnetic recording tape comprising a nonmagnetic support and a magnetic layer containing ferromagnetic powder and a binder, wherein the nonmagnetic support has an intrinsic viscosity of from 0.40...
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6773783 |
Magnetic recording medium in the form of a disc
A magnetic recording medium in the form of a disc comprising a polyethylene naphthalate support having provided thereon a magnetic layer comprising ferromagnetic metal fine powder or ferromagnetic...
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6770351 |
Biaxially oriented polyester film and magnetic recording medium
A biaxially oriented polyester film for magnetic recording media, which has (1) a dimensional change between before treated and after treated in a width direction of 0.40% or less when the film is...
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6500295 |
Laminate making method
A hot-melt web has a buffer adhesive layer of a thermosetting resin on a light transmissive, heat resistant resin support. The hot-melt web has the advantages of light transparency, heat...
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6465075 |
Biaxially oriented laminate polyester film
A biaxially oriented laminate polyester film (1) has a first polyester layer having a thickness (tA) of 0.3 to 5 μm and a second polyester layer containing an inert fine particle lubricant and ...
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6368722 |
Laminated film and process
A laminated film containing a heat resisting resin layer which is soluble in a dipolar aprotic solvent, is laminated on a biaxially oriented thermoplastic film, wherein the biaxially oriented...
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6303228 |
Thermal transfer ribbon and base film thereof
A base film for a thermal transfer ribbon which is a biaxially oriented polyester film comprising polyethylene-2,6-naphthalene dicarboxylate as a main constitutional element, wherein in a...
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6228975 |
Polyalkylene naphthalate, composition thereof, film, and processes for producing these
A polyalkylene naphthalate for a film, which comprises a naphthalenedicarboxylic acid component as a main dicarboxylic acid component and an aliphatic glycol component as a main glycol component,...
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6106926 |
Thermoplastic raw material and film produced therefrom
A thermoplastic raw material, such as a polyester, containing particles (I) having an average particle diameter of <0.5 μm and particles (II) having an average particle diameter of from 3.3 to 4.0 ...
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5958553 |
Biaxially oriented, polyethylene-2, 6-naphthalate film and magnetic tape formed therefrom
A biaxially oriented polyethylene-2,6-naphthalate film suitable for producing magnetic recording media wherein the film has a Young's modulus of at least 550 kg/mm2 in the longitudinal direction...
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5935674 |
Disc type magnetic recording medium
The present invention provides a disc magnetic recording medium which provides remarkable improvements in electromagnetic characteristics, particularly high density recording properties, and...
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5919536 |
Biaxially oriented films containing layers of polyethylene naphthalate bibenzoate (PENBB) and process for the production of these films
Biaxially oriented films containing at least one layer of polyethylene naphthalate bibenzoate (PENBB) copolyester wherein the copolyester contains from about 60 to about 40 mol % of a first...
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5702794 |
Laminated polyester film for magnetic recording medium
A magnetic recording tape or disk formed from a biaxially oriented laminated polyester base film which comprises a layer (A) of a polyester consisting essentially of 2,6-naphthalenedicarboxylic...
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5677033 |
Biaxially oriented, unidirectionally long polyethylene-2,6-naphthalenedicarboxylate film
Provided is a biaxially oriented, unidirectionally long polyethylene-2,6-naphthalenedicarboxylate film having the following characteristic properties; (A) both the Young's modulus in the...
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5665454 |
Biaxially oriented polyethylene-2,6-naphthalate film and magnetic tape formed therefrom
A biaxially oriented polyethylene-2,6-naphthalate film suitable for producing magnetic recording media wherein the film has a Young's modulus of at least 550 kg/mm2 in the longitudinal direction...
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5534323 |
Biaxially oriented film of polyethylene-2,6-naphtalenedicarboxylate for magnetic recording floppy disks
Provided are a biaxially oriented base film formed from polyethylene-2,6-naphthalenedicarboxylate as a raw material and a high-density magnetic recording floppy disk using the same. The base film...
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5510192 |
Polyethylene naphthalate multilayered film for high density magnetic recording medium
Disclosed herein is a polyethylene naphthalate multilayered film for a high density magnetic recording medium comprising: a polyethylene naphthalate layer (A), and a polyethylene naphthalate layer...
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5494739 |
Polyethylene-2,6-naphthalenedicarboxylate film
A biaxially oriented polyethylene-2,6-naphthalenedicarboxylate film, which can be used as a base film for a recording medium capable of high-density recording, characterized in that when h (unit:...
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5431983 |
Magnetic recording tape comprising a polyethylene-2,6-napthalate substrate, magnetic metal thin film, and a backcoat layer
A magnetic recording tape, in particular a VTR tape, comprising; (A) a substrate composed of a biaxially oriented polyethylene-2,6-naphthalate film of which (a) the Young' modulus in the...
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5415930 |
Biaxially oriented, unidirectionally long polyethylene-2,6-naphthalate film and magnetic tape therefrom
A biaxially oriented, unidirectionally long polyethylene-2,6-naphthalate film,(A) which contains (a) 0.05 to 0.4% by weight of first inert solid particles having an average particle diameter of...
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5364684 |
Magnetic recording medium comprising a polyethylene-2,6-naphthalate multilayered film coated on both sides by a coating layer
Disclosed herein is a magnetic recording medium comprising:a stretched polyethylene-2,6-naphthalate multilayered film having a high-roughness surface and a low-roughness surface;a coating layer (A)...
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5352534 |
Oriented polyester film
An oriented polyester film (A) which comprises modified polyethylene-2,6-naphthalenedicarboxylate containing a 4,4'-diphenyldicarboxylic acid component and having a heat of crystallization of 16 to...
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5316823 |
Magnetic tape
A magnetic tape for audio cassettes wherein a magnetic layer is provided on base film characterized in that the a base film, is biaxially oriented polyethylene-2,6-naphthalate film having a Young's...
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5051292 |
Biaxially oriented film of polyethylene-2,6-naphthalate
A biaxially oriented film of polyethylene-2,6-naphthalate having a Young's modulus of at least 650 kg/mm2 in a given direction on the film plane and a direction crossing it at right angles, the...
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4876137 |
Polyethylene naphthalate film for high-density magnetic recording media of floppy disk
Disclosed herein is a polyethylene naphthalate film for high-density magnetic recording media of floppy disk which has little anisotropy, high mechanical strength and good dimensional stability,...
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4804736 |
Polyethylene-2,6-naphthalate film for magnetic recording tapes
Disclosed herein is a polyethylene-2,6-naphthalate film suitable for magnetic recording tapes and, in particular, a polyethylene-2,6-naphthalate film suitable for a base film of high-density...
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4732799 |
Polyethylene naphthalate film
Disclosed herein is a biaxially oriented polyethylene naphthalate film having a center line average roughness [Ra(μm)] and a film thickness [T(μm)] which satisfy the following formula: ##EQU1## p...
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3501344 |
MAGNETIC RECORDING TAPE SUPPORTED ON POLY(ETHYLENE 2,6 - NAPHTHALENEDICARBOXYLATE)
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