Laminated biaxially-oriented polyamide film and process for...

Details Laminated biaxially-oriented polyamide film and process for... Laminated biaxially-oriented polyamide film and process for...

2007-03-13

2007-03-13

Woodward, Ana L. (Department: 1711)

Plastic and nonmetallic article shaping or treating: processes

Disparate treatment of article subsequent to working,...

Effecting temperature change

C229S087010, C229S087080, C264S290200, C428S035700, C428S143000, C428S323000, C428S474400, C428S474700, C428S474900, C428S475200, C428S910000

Reexamination Certificate

active

10362269

ABSTRACT:
A biaxially oriented polyamide laminate film having a layered structure of A/B, A/B/A or A/B/C, layer A having no projections with a height of 0.27 μm or higher on the surface, or having a density of projections with a height of 0.27 μm or higher on the surface of 200 projections/mm2, and the film exhibiting a maximum dimensional change of 4% or less during immersion in 95° C. hot water, a maximum dimensional change of 6% or less after withdrawal from the hot water, and a maximum dimensional change of 4% or less after heat treatment in dry hot air at 160° C.; and a process for producing the same.This film reduces the differences in physical properties in the width direction that occurs in a tenter and exhibits excellent adhesive properties, resistance to fatigue from flexing and operability, and can be provided economically.

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