Stock material or miscellaneous articles – Structurally defined web or sheet – Continuous and nonuniform or irregular surface on layer or...
Patent
1998-05-19
2000-09-26
Kiliman, Leszek
Stock material or miscellaneous articles
Structurally defined web or sheet
Continuous and nonuniform or irregular surface on layer or...
428336, 428402, 4284744, 428694ST, 428694SL, 428694SG, 428900, G11B 566
Patent
active
061240214
ABSTRACT:
A biaxially oriented laminate film comprising a wholly aromatic polyamide layer A and a wholly aromatic polyamide layer B containing an inert fine particles and laminated on one surface of the wholly aromatic polyamide layer A.
The surface not in contact with the wholly aromatic polyamide layer B of the wholly aromatic polyamide layer A has projections having an average height of 2 to 85 nm and an average width of 20 to 500 .mu.m at a density of 4 to 2,500/mm.sup.2 and the surface, not in contact with the wholly aromatic polyamide layer A, of the wholly aromatic polyamide layer B is rougher than the surface, not in contact with the wholly aromatic polyamide layer B, of the wholly aromatic polyamide layer A.
REFERENCES:
patent: 4075172 (1978-02-01), Ozawa et al.
patent: 4548855 (1985-10-01), Ono et al.
patent: 4568600 (1986-02-01), Ono et al.
patent: 4592885 (1986-06-01), Ichino et al.
patent: 5069962 (1991-12-01), Okazaki
patent: 5328745 (1994-07-01), Kurihara et al.
Kiliman Leszek
Teijin Limited
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