초록 ▼

The present invention relates to an improved mold structure for forming a polymeric gasket around a predetermined portion of a frangible sheet such as glass. The mold structure includes two cooperating mold sections having spaced apart facing surfaces for defining a chamber for receiving the glass s

The present invention relates to an improved mold structure for forming a polymeric gasket around a predetermined portion of a frangible sheet such as glass. The mold structure includes two cooperating mold sections having spaced apart facing surfaces for defining a chamber for receiving the glass sheet. A seal is positioned in at least one of the mold sections about the periphery of the chamber and is utilized to resiliently support the sheet within the chamber. The seal cooperates with the mold sections and a predetermined portion of the sheet for defining a gasket forming cavity having a configuration corresponding to the gasket to be formed on the sheet of the material. An inlet communicates with the gasket forming cavity and is utilized to introduce a flowable gasket material into the gasket cavity. In the preferred embodiment of the invention, the seal includes an EPDM rubber main body portion and a removable Teflon corner section which sealingly contacts the glass sheet and forms a portion of the gasket forming cavity. The surface of the seal which contacts the glass sheet is provided with a central apex portion to reduce compression of the seal at the corner portions.

대표청구항 ▼

A mold structure for forming a gasket on a predetermined portion of a frangible sheet, comprising: at least two cooperating mold sections having facing surfaces defining a chamber for receiving the sheet; seal means positioned in at least one of the facing surfaces of said mold sections to resilient

A mold structure for forming a gasket on a predetermined portion of a frangible sheet, comprising: at least two cooperating mold sections having facing surfaces defining a chamber for receiving the sheet; seal means positioned in at least one of the facing surfaces of said mold sections to resiliently support the sheet within the sheet receiving chamber and to cooperate with the predetermined portion of the sheet to at least in part define a gasket forming cavity corresponding to the gasket to be formed on the sheet; said seal means including a main body portion formed of a first resilient material and a corner section supported by said main body portion and adapted to be disposed adjacent said gasket forming cavity and the sheet when the sheet is resiliently supported within the chamber, said corner section being formed of a second resilient material different from said first resilient material; and inlet means for introducing a flowable gasket material into the gasket forming cavity.