公开(公告)号：US20040118510A1

公开(公告)日：2004-06-24

申请号：US10326463

申请日：2002-12-20

Applicant: Graftech, Inc.

Inventor： Mark W. Pollock ,  John H. Jackson ,  Albert J. Mariconda ,  Steven A. Shane

IPC: B32B031/00

CPC classification number: F16J15/122 ,  F16L23/18 ,  Y10T156/1062

Abstract: Adhesive-backed graphite foil rings (62,64) are suited to forming a seal between a metal gasket plate (12) and adjacent pipe flanges (40, 42). To form the rings, a thin layer of adhesive (74) is applied in the form of a coating to a flexible graphite sheet (70). A release liner (80) may be applied over the adhesive layer. The rings (62,64) are cut from the adhesive coated flexible graphite sheet. In one method, the rings are die cut while leaving the release liner intact. After removal of extraneous material, a plurality of the rings remain attached to the release liner and can be peeled away from the liner as needed. In another method, a central cut-out portion (102) from a large adhesive-backed ring is later used to form a smaller adhesive-backed ring.

Abstract translation: 粘合剂支撑的石墨箔环（62,64）适于在金属垫片板（12）和相邻的管道凸缘（40,42）之间形成密封。 为了形成环，将薄层粘合剂（74）以涂层的形式施加到柔性石墨片（70）上。 释放衬垫（80）可以施加在粘合剂层上。 从粘合剂涂覆的柔性石墨片切割环（62,64）。 在一种方法中，环被模切，同时使释放衬垫完好无损。 在去除外来材料之后，多个环保持附着到释放衬垫上，并且可以根据需要从衬里剥离。 在另一种方法中，来自大型粘合剂背衬环的中心切口部分（102）稍后用于形成较小的粘合剂背衬环。