Title:
LAMINATED FILM
Document Type and Number:
Japanese Patent JP3310165
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a laminated film which has superior properties such as take-up, easy slippage and handling and also, other properties such as electro magnetic conversion, dropout, traveling of a magnetic layer and durability.
SOLUTION: This laminated film consists of a coated layer B containing a core shell structure comprising a more pliable outer part than an inner part with an average grain size dB of 5-100nm and water resin, laminated on at least, one of the faces of a thermoplastic resin layer A containing 5,000-50,000pcs/mm2 of particle A representing the frequency of a surface protrusion with an average grain size of 40-400nm and a volumetric shape factor of 0.1-π/6. In addition, the average grain size (dB) (nm), the grain size dcB (nm) of the core part of the particle B and the layer thickness (tB) (nm) of the coated layer B satisfy formulae 1.01≤dB/dcB≤3.0, 0.05≤tB/dcB≤0.8, simultaneously. Further, the frequency of a surface protrusion comprising the particle is (1×106)-(1×108)pcs/mm2, and the frequency of the protrusion which is formed of the macroaggregate of the particle B is 50 pcs/cm2 or less.
Inventors:
Mitsuho Tojo
Makoto Iida
Toshifumi Ohsawa
Makoto Iida
Toshifumi Ohsawa
Application Number:
JP14415396A
Publication Date:
July 29, 2002
Filing Date:
June 06, 1996
Export Citation:
Assignee:
Teijin Limited
International Classes:
B32B27/04; B29C47/06; B32B27/08; B32B27/20; B32B27/30; G11B5/73; G11B5/733; (IPC1-7): B32B27/30; B32B27/20
Domestic Patent References:
| JP7241962A | ||||
| JP7232420A | ||||
| JP7249217A |
Attorney, Agent or Firm:
Sumihiro Maeda
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