| 摘要 |
PURPOSE:To produce a film which has an excellent transparency (free from haziness, clarity) at high seed by stabilizing a melt resin bubble of thermoplastic resin which is a long neck type small in melt tensile strength. CONSTITUTION:A melt resin bubble 3 is cooled by a primary airing 2, and supported via a layer of air by the surface of a stabilizing body 4 in a state of suspension, and the temperature of the bubble at the entrance of a secondary airing 5 which is provided at the point of expansion is adjusted to be in the ranges between the melting point of thermoplastic resin and the melting point +110 deg.C, and a molding method of inflation film and a device suitable for the method are obtained. |
