公开(公告)号：US20040231530A1

公开(公告)日：2004-11-25

申请号：US10871227

申请日：2004-06-18

Applicant: Ballard Power Systems Inc.

Inventor： Donald A. Lines ,  Nicholas A. Fletcher ,  Eric G. Pow ,  Michael Sexsmith ,  Bill Gray ,  Horst Thumm

IPC: B41F019/02

CPC classification number: B29C43/3607 ,  B29C43/003 ,  B29C43/36 ,  B29C43/56 ,  B29C2043/025 ,  B29C2043/566 ,  H01M8/0206 ,  H01M8/0213 ,  H01M8/0228 ,  Y10T29/10 ,  Y10T156/1023 ,  Y10T156/1039 ,  Y10T156/1056

Abstract: A method for embossing expanded graphite sheet material comprises removing at least a portion of the gas from within the material by exposing the material to a pressure less than atmospheric pressure, and then embossing the material. The pressure to which the material is exposed is preferably no greater than about 400 torr. An apparatus for embossing expanded graphite sheet material at a pressure less than atmospheric pressure comprises: an embossing device, a compression device adapted to urge the embossing device against the material, an embossing chamber comprising the at least one embossing device and adapted to receive the material and to be substantially gas-tight at least when the embossing device is urged against the material by the pressing device, and an evacuation device for reducing the pressure within the embossing chamber.

Abstract translation: 用于压花膨胀石墨片材的方法包括通过将材料暴露于低于大气压的压力，然后对材料进行压花来从材料内除去至少一部分气体。 材料暴露的压力优选不大于约400托。 一种用于在低于大气压力的压力下对膨胀石墨片材进行压花的装置包括：压花装置，适于将压花装置推靠在材料上的压缩装置，包括至少一个压花装置并适于接纳材料的压花室 并且至少当压花装置通过加压装置被推靠在材料上时基本上不气密，以及用于降低压花室内的压力的排气装置。