abstract |
HOME CANNING LID HAVING AS THE SEALING PORTION THEREOF A CELLULAR PLASTISOL GASKET FORMED FROM A VINYL POLYMER, A PHENOL-FORMALDEHYDE RESIN, FILLER, AT LEAST ONE PLASTICIZER, AND A BLOWING AGENT, AND SAID GASKET COMPOSITION WHICH IS CAPABLE OF WITH STANDING THE PRESSURES, TEMPERATURES, AND ABRASION INFLICTED UPON A HOME CANNING LID. |