公开(公告)号：JPH0868401A

公开(公告)日：1996-03-12

申请号：JP13086694

申请日：1994-05-23

Applicant: NOK CORP

Inventor： KURITA YOSHIYUKI ,  SAITO TAKAFUMI ,  YOSHIDA MINORU

IPC: F16L55/04 ,  B29C37/02 ,  F15B1/08 ,  F16J3/02

Abstract: PURPOSE: To provide a manufacture of a bladder for an accumulator by which the bladder can be manufactured in such a manner that the end surface of the end part of a gas shielding layer can reach the end surface of the end part of an elastic material layer, and also manufactured under a condition without causing any pucker on the gas shielding layer. CONSTITUTION: A forming material and a gas shielding layer 12 are arranged in the forming part of a forming die having a burr forming part on the end part of the forming part, and a bladder is formed under such a condition that the end part 12a of the gas shielding layer 12 is arranged at least in the burr forming part, then a burr part 11d formed by the burr forming part is cut off from the bladder.