| 摘要 |
The present invention provides a tenter oven for stretching a thermoplastic resin film in the width direction thereof, wherein an air blowing nozzle provided therein that blows heated air onto a film running along a film passing surface is a proximate nozzle in which an air blowing opening provided on the air blowing surface thereof is formed as a slit, a distance (L) between the air blowing surface and the film passing surface and a slit width (B) of the slit satisfy the relationship expressed by the equation, (L/B) ‰¤ 10, and the distance (L) is 150 mm or less. |
