Method of and a device for use in adhesively securing together the surfaces of substantially impermeable materials

Abstract

Abstract IN ORDER TO SECURE THE SURFACE OF ONE METAL ARTICLE TO THE SURFACE OF ANOTHER METAL ARTICLE, AND ADHESIVE SUBSTANCE CONTAINING A SOLVENT IS APPLIED TO EITHER ONE OR BOTH SURFACES IN THE FORM OF A COATING, AND THE SURFACES ARE PLACED IN CONTACT SO THAT A BOND IS FORMED BETWEEN THE SURFACES. A BOND SO FORMED IS LIKELY TO BE UNSATISFACTORY SINCE THE IMPERMEABILITY OF THE SURFACES OF THE ARTICLES PREVENTS THE SOLVENT FROM DRYING OUT FULLY AT THE INTERFACE BETWEEN THE COATING LAYER AND THE METALLIC SURFACE. PARTIAL DRYING OF THE ADHESIVE COATING, AND SUBSEQUENTLY BRINGIN TOGETHER OF THE SURFACES UNDER PRESSURE, KNOWN AS IMPACT ADHESION, MAY IMPROVE THE BOND. THE METHOD HEREIN DISCLOSED TEACHES THE STEPS OF COATING THE SURFACES WITH AN ADHESIVE COATING, DRYING OUT THE ADHESIVE COATINGS FULLY BY EVAPORATION OF THE SOLVENT INCLUDING CURING WHERE NECESSARY OR PREFERRED, THEN APPLYING A THIN FILM OF SOLVENT TO EACH LAYER, AND FINALLY PLACING THE SURFACES TOGETHER UNDER PRESSURE TO FORM A BOND. BY THIS METHOD, A MORE RELIABLE BOND MAY BE EASILY FORMED BETWEEN EACH METALLIC SURFACE AND ITS COATING, AND SUBSEQUENTLY A FURTHER BOND IS FORMED BETWEEN THE ADHESIVE COATINGS IN THE REGION OF THEIR RESPECTIVE SUPERFICIAL FACES. THE QUANTITY OF SOLVENT IN THE FILM BEING SUCH THATTHE BOND BETWEEN THE ADHESIVE COATING AND THE METALLIC SURFACE IS NOT IMPAIRED. A DEVICE IS DISCLOSED BY WHICH THE STEP OF PLACING THE SURFACES TOGERTHER UNDER PRESSURE IS ADVANTAGEOUSLY CARRIED INTO EFFECT.

Inventors

• 👤 David James

Bibliographic Details