Method for making honeycomb cores for sandwich type structures

Claim 1

METHOD FOR THE CONTINUOUS PRODUCTION OF A CORE FOR SANDWICH-TYPE STRUCTURES FROM AN ELONGATE WEB OF MATERIAL BEING FED CONTINUOUSLY WHICH COMPRISES SCORING SAID WEB ON BOTH SIDES WITH A SERIES OF LONGITUDINAL SCORES IN PAIRS, THE PAIRS OF SCORES ON ONE SIDE BEING LOCATED MIDWAY BETWEEN THE PAIRS OF SCORES ON THE OTHER SIDE; SLOTTING SAID WEB WITH A SERIES OF PARALLEL TRANSVERSE ROWS OF SLOTS, THE SLOTS OF ANY ROW BEING STAGGERED WITH RESPECT TO SLOT OF ADJACENT ROWS, AND THE SLOTS OF EVERY OTHER ROW BEING SEPARATED BY THE SPACE BETWEEN PAIRS OF SCORES ON ONE SIDE OF SAID WEB AND THE SLOTS OF THE OTHER ROWS BEING SEPARATED BY THE SPACE BETWEEN PAIRS OF SCORES ON THE OTHER SIDE OF SAID WEB; APPLYING ON BOTH SIDES OF SAID WEB LONGITUDINAL STRIPES OF ADHESIVE BETWEEN EACH PAIR OF SCORES THEREON; CONTINUOUSLY PLEATING THE ADVANCED PORTION OF SAID WEB BY BENDING IT IN ALTERNATE DIRECTIONS AT EACH ALTERNATE ROW OF SLOTS; CONTINUOUSLY BACKING UP THE PLATES SO FORMED ONE UPON ANOTHER; BY RETARDING THEIR RATE OF TRAVEL RELATIVE TO THAT OF THE UNPLEATED PORTION OF SAID SHEET; CAUSING THE PRESSING OF SAID PLEATES UPON ONE ANOTHER BY STILL FURTHER RETARDING THEIR RATE OF TRAVEL, THEREBY BONDING WITHIN EACH PLATE ONE PORTION OF EACH OF THE STRIPS OF ADHESIVE TO ANOTHER PORTION THEREOF; AND INCREASING THE RATE OF TRAVEL OF THE COMPRESSED, INTERRUPTEDLY BONDED PLATES TO SEPARATE THE UNBONDED PORTIONS THEREOF, THEREBY EXPANDING THE PLEATS INTO A HONEYCOMBLIKE STRUCTURE.