公开(公告)号：JPH02252510A

公开(公告)日：1990-10-11

申请号：JP4430590

申请日：1990-02-23

Applicant: STAMICARBON

Inventor： PIITAA BURUININKU ,  MARUCHINUSU YOHANESU NIKORAASU

IPC: B29C43/02 ,  B29C35/02 ,  B29C43/52 ,  B29C70/46 ,  B29K105/06 ,  C08J5/04 ,  G10K11/18

Abstract: PURPOSE: To eliminate an adhesion of a product to a device by preheating fibers and a matrix polymer to a temperature above a melting point or softening point of the polymer and below a melting point of the fiber and then effecting a molding step using the device the temperature of which is below the melting point or softening point of the polymer. CONSTITUTION: Polyalkene fibers with a tensile strength of at least 2 Gpa and a modulus of at least 60 Gpa are preheated by a hot air or emitting, for example, an infrared ray to a wind fiber texture or package coupled to a matrix polymer. Its heating temperature is below a melting point of the polyalkene fibers and above a melting point or softening point of the polymer. The preheated texture is molded by using a compression mold a temperature of which is below the melting point or softening point of the polymer. For example, a package 3 is placed on the mold 1, and the mold is brought into contact in the mold 2. A package is cooled in the closed mold to obtain an acoustic diaphragm having a homogeneous texture.