Study on Mechanism of Flattening Papers in Heat and Pressure method

Abstract

An efficient mechanism which consists of a heat roller and a pressure roller for flattening crumpled paper was developed. Mechanical properties of papers with some crumples or folds were measured experimentally, and the paper was heated by a hot wind under tension. Folds in the paper were optically observed. And it was found that applying heat make the paper stronger. Furthermore it was found that there makes another folds in the paper unless stretching the paper in an orthogonal. direction to paper feeding direction. Mechanical model for flattening crumpled paper was proposed. The numerical result was good agreement with experimental result.