Machine direction orientation of nylon film

Details Machine direction orientation of nylon film Machine direction orientation of nylon film

1983-02-18

1984-10-16

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Reshaping running or indefinite-length work

2642101, B29D 724, B29G 700

Patent

active

044774079

ABSTRACT:
A process for machine direction orientation of nylon films in which nip rolls are applied to both the slow and fast orientation rolls with a substantially uniform force in the range of 15 to 45 N/cm width of nip roll. The temperature of the slow roll is held between 70.degree. and 180.degree. C. and the temperature of the fast roll is held between the temperature of the first roll and 20.degree. C. below the melting temperature of the nylon film. The distance between the orientation rolls is in the range of 10 to 2050 .mu.m.

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