| 摘要 |
<p>A method for heating plastic film, wherein first, a belt-shaped plastic film (1) is wrapped around a core (5) with a supporting member (2) interposed therebetween the plastic film (1), and a wrapped body (4) of the plastic film (1) is formed in a manner such that the supporting member (2) causes an air gap layer (3) to be formed between the plastic film (1). Next, the wrapped body (4) of the plastic film (1) is put in a heating furnace (10), after which the wrapped body (4) of the plastic film (1) is heated to a prescribed temperature in the heating furnace (10).</p> |
