| 摘要 |
PURPOSE:To adapt vacuum molding, pressure forming and vacuum pressure forming to a molding material having air permeability. CONSTITUTION:A molding method contains a heating process softening a molding material A', a sealing treatment process superposing a non-perforated sheet B having elongation properties and flexibility on the molding material A, a mold register process arranging the superposed molding material A' and non- perforated sheet B to a mold 6 and a molding process making the pressure of the space facing to the molding material A' more negative than that of the space facing to the non-perforated sheet B to deform the non-perforated sheet B on the negative pressure side and pressing the molding material A' to the molding surface 61 of the mold 6 by the non-perforated sheet B. As the molding material A', a material having open cells formed thereto by expanding a sheet body wherein glass staple fibers are mixed with PP or PE can be used. |
