Method of making gaskets

Abstract

Abstract A GASKET HAVING IMPROVED SEALING PROPERTIES AND THE METHOD OF FORMING SUCH A GASKET WHEREIN A CONTINUOUS STRIP OR WEB OF GASKET MATERIAL IS WOUND ON A CORE WITH THE CORE HAVING A CROSS-SECTIONAL CINFIGURATION CORRESSPONDING TO THE INTERNAL CONFIGURGATION OF TH GASKET BEING MADE. THE WEB MATERIAL IS WOUND UPON ITSELF AND, IN THE PREFERRED EMBODIMENT, HAS A SERIES OF INTERMEDIATE BONDING LAYERS OF A FLUID-IMPERMEABLE POLYMER MATERIAL WHICH IN THE END PRODUCT FORM A PLURLITY OF PARAQLLEL FLUID BARRIERS TO PRODUCE EFFECTIVE SEALING. THE WINDING OF THE WEB MATERIAL ON THE CORE AND THE APPLICATION OF THE POLYMER MATERIAL TO THE WEB PROVIDES A TUBE WHICH IS THEN CUT INTO PRESELECTED THICKNESS TO PROVIDE INDIVIDUAL GASKETS. ADDITIONAL POLYMER MATERIAL MAY BE PROVIDED ON THE CUT OR EXPOSED SURFACES OF THE GASKET OF DESIRED.THE CROSS-SECTIONAL THICKNESS OF TH GASKET IS DICATED SOLELY BY THE CONVOLUTE GASKET MATERIAL AND THE POLYMER MATERIAL LAYER ON LAYERS. ONE ASPECT OF THE GASKET MATERIAL WHICH IS TO BE WOUND ON THE CORE WITH THE BASE MATERIAL HAVING APPLIED TO ONE OR BOTH SIDES THEREOF AN ADHESIVE COATING WHICH HAS BEEN DRIED, AT LEAST TO THE EXTENT THAT IT WILL NOT ADHERE OR COHERE TO ITSELF WHEN ROLLED UPON ITSELF, BEFORE THE TUBE IN FORMED. D R A W I N G

Inventors

• 👤 Robert G Farnam

Bibliographic Details