Stock material or miscellaneous articles – Structurally defined web or sheet – Continuous and nonuniform or irregular surface on layer or...
Patent
1995-10-11
1997-10-14
Kiliman, Leszek
Stock material or miscellaneous articles
Structurally defined web or sheet
Continuous and nonuniform or irregular surface on layer or...
428143, 428213, 428323, 428328, 42840224, 428404, 428405, 428406, 428480, 428483, 428694ST, 428694SL, 428694SG, 428900, G11B 566, B32B 310
Patent
active
056770340
ABSTRACT:
Disclosed is a biaxially oriented, laminated polyester film having a lamination structure with at least two layers. At least one of the outermost layers of the film is a thin laminated layer A having a thickness of not more than 3 .mu.m. In the layer A, internally formed particles and specified agglomerated particles or mono-dispersed particles are present, or the mono-dispersed particles are present at a very small content. When the polyester film is used as a base film for magnetic recording media, the abrasion resistance of the film surface at a high speed can be greatly increased.
REFERENCES:
patent: 5069962 (1991-12-01), Okazaki et al.
patent: 5284699 (1994-02-01), Nishino et al.
patent: 5336079 (1994-08-01), Okazaki et al.
patent: 5532047 (1996-07-01), Okazaki
Abe Koichi
Miyake Tohru
Ohshima Keisuke
Okazaki Iwao
Kiliman Leszek
Miller Austin R.
Toray Industries Inc.
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