Biaxially oriented film of polyethylene-2,6-naphthalate

Details Biaxially oriented film of polyethylene-2,6-naphthalate Biaxially oriented film of polyethylene-2,6-naphthalate

1990-01-31

1991-09-24

Cashion, Jr., Merrell C.

Stock material or miscellaneous articles

Structurally defined web or sheet

Continuous and nonuniform or irregular surface on layer or...

428480, 428694, 428900, G11B 564

Patent

active

050512927

ABSTRACT:
A biaxially oriented film of polyethylene-2,6-naphthalate having a Young's modulus of at least 650 kg/mm.sup.2 in a given direction on the film plane and a direction crossing it at right angles, the difference between the Young's moduli in the two directions being at most 200 kg/mm.sup.2, the difference between the thermal shrinkages in the two directions being 0 to 0.1%.

REFERENCES:
patent: 4876137 (1989-10-01), Utsumi

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