Process for reinforcing a ferrous metal surface

• US 3,009,824 A
• Filed: 08/03/1959
• Issued: 11/21/1961
• Est. Priority Date: 08/03/1959
• Status: Expired due to Term

• Current Assignee: Bill D. Tyree, Gordon B. Johnson, Kinnison S. Boynton
• Original Assignee: Bill D. Tyree, Gordon B. Johnson, Kinnison S. Boynton
• Inventors: Boynton, Kinnison S., Johnson, Gordon B., Tyree, Bill D.
• Application Number:
  US03/830,996
• Time in Patent Office: 841 Days
• US Class Current: 427/299
• CPC Class Codes: B29C 70/12 using fibres of short length, e.g. in the form of a mat non-woven fabrics per se D04H1/00
• CPC Class Codes: B65D 90/044 fixed or supported over substantially the whole interface

Claims

1. PROCESS FOR REINFORCING A FERROUS METAL STRUCTURE, WHICH COMPRISES BLASTING THE METAL STRUCTURE TO EXPOSE AN OXIDE-FREE METAL SURFACE, PROMPTLY COVERING SAID SURFACE WITH A LAYER HAVING A THICKNESS FROM ABOUT 2 TO 10 MILS OF UNSATURATED ISOPHTHALIC POLYESTER RESIN, CURING THE FILM TO A POINT WHERE ITS BODY IS SUBSTANTIALLY SOLID AND ITS SURFACE EXHIBITS SLIGHT TACKINESS, SIMULTANEOUSLY SPRAYING A MIXTURE OF UNSATURATED ISOPHTHALIC POLYESTER AND POLYMERIZATION CATALYST, A MIXTURE OF UNSATURATED ISOPHTHALIC POLYESTER AND ACCELERATOR, AND CHOPPED GLASS FIBER ON SAID FILM TO DEPOSIT AN UNSATURATED ISOPHTHALIC POLYESTER RESIN-GLASS FIBER LAYER HAVING A THICKNESS IN EXCESS OF 100 MILS, WORKING SAID LAYER TO EXPEL AIR AND DEPRESS THE GLASS FIBER BELOW THE SURFACE OF THE RESIN.