SYNTHETIC RESIN CURED IN PLACE ROTARY EMBOSSING COUNTER AND METHOD OF PREPARING SAME

• Main Authors: BROWN, WILLIAM E, MC COY, DENNIS R, MAGEE, RAMON J
• Format: Patent
• Language: English; French
• Published: 24.03.1981
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; BEARINGS; BLASTING; DECORATIVE ARTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ENGINEERING ELEMENTS AND UNITS; FLEXIBLE SHAFTS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES; LIGHTING; LINING MACHINES; MACHINES OR ACCESSORIES FOR MAKING, SETTING, OR DISTRIBUTINGTYPE; MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FORSCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING; MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNERANALOGOUS TO PAPER; MECHANICAL ENGINEERING; MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD ORMATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; MOSAICS; PAPERHANGING; PERFORMING OPERATIONS; PHOTOGRAPHIC OR PHOTOELECTRIC COMPOSING DEVICES; PRINTING; PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTINGSURFACES; PRODUCING DECORATIVE EFFECTS; PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE; ROTARY BODIES OTHER THAN GEARING ELEMENTS; SHAFTS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; STAMPS; TARSIA WORK; THERMAL INSULATION IN GENERAL; TRANSPORTING; TYPE; TYPEWRITERS; WEAPONS; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUSTO PAPER

A resurfaceable rotary die counter is prepared by employing a cylindrical counter core having a central, circumferentially extending relieved area filled with readily replaceable synthetic resin material containing pretensioned, spirally wound glass fiber roving which renders the resin craze and crack resistance even under extended continuous we. Economical counter production is possible because of preparation of the counter on the press during makeready using the die as a counter forming element. The resin is run in against the die prior to hardening of the same to form a reverse design surface in the counter which exactly mates with the doe surfaces. A viscous resin having a minimum viscosity of about 6000 cps. is employed which has the characteristics of remaining on the counter core without substantial flow until ultraviolet cure can be effected. Fiber glass roving spirally wound under tension around the resin backed core during application of successive resin layers thereto provides a ten fold increase in strength over previously available systems.