Process for producing biaxially oriented nylon film

Details Process for producing biaxially oriented nylon film Process for producing biaxially oriented nylon film

1990-03-09

1992-03-10

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Producing multilayer work or article

264173, 2642095, 2642101, 2642358, 2642902, 264564, 264569, B29C 4700, B29C 4706, B29C 5528

Patent

active

050947990

ABSTRACT:
The invention relates to processes for producing biaxially oriented single-layered and multilayered films. The biaxially oriented single-layered film receives stresses in the range of 500 kg/cm.sup.2 to 1500 kg/cm.sup.2 each in the machine and transverse directions of the film. The multilayered film receives stresses in the range of 300 kg/cm.sup.2 to 1250 kg/cm.sup.2 each in the machine and transverse directions of the film. Thus, the molding stability in biaxial orientation of a nylon film is improved and the thickness accuracy of a resulting film is improved.

REFERENCES:
patent: 3788503 (1974-01-01), Hirose et al.
patent: 3880974 (1975-04-01), Nohtomi et al.
patent: 4728478 (1988-03-01), Sacks et al.
patent: 4734245 (1988-03-01), Takashige et al.
patent: 4911963 (1990-03-01), Lustig et al.

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