Pre-printed corrugated board fabrication and cut-off control method and apparatus

• US 3,058,869 A
• Filed: 12/20/1956
• Issued: 10/16/1962
• Est. Priority Date: 12/20/1956
• Status: Expired due to Term

• Current Assignee: Edward A. Taub, Irwin Cohen
• Original Assignee: Edward A. Taub, Irwin Cohen
• Inventors: Cohen, Irwin, Taub, Edward A.
• Application Number:
  US03/629,723
• Time in Patent Office: 2,126 Days
• US Class Current: 156/250
• CPC Class Codes: B26D 5/34 scanning being effected by a photosensitive device
• CPC Class Codes: B31F 1/2822 involving additional operations
• CPC Class Codes: B41F 19/00 Apparatus or machines for carrying out printing operations combined with other operations
• CPC Class Codes: D21J 1/08 Impregnated or coated fibreboard
• CPC Class Codes: Y10T 156/1052 with cutting, punching, tearing or severing
• CPC Class Codes: Y10T 156/1343 Cutting indefinite length web after assembly with discrete article
• CPC Class Codes: Y10T 156/1365 Fixed cutter
• CPC Class Codes: Y10T 83/152 And modify another operation

Claims

1. THE METHOD OF PRODUCING CORRUGATED BOARD HAVING A PRE-PRINTED DESIGN ON AT LEAST ONE LINER THEREOF AND BEING CUT INTO LENGTHS WITH THE CUT-OFF POSITION PROPERLY REGISTERED WITH RESPECT TO THE PRE-PRINTED DESIGN COMPRISING THE STEPS OF PRINTING A REPETITIVE DESIGN ON A CONTINUOUS WEB OF MATERIAL ADAPTED TO FORM ONE OF THE LINERS OF THE CORRUGATED BOARD, EACH REPETITION OF SAID PRE-PRINTED DESIGN INCLUDING A PLURALITY OF EVENLY SPACED REGISTER MARKS, APPLYING SAID PRE-PRINTED LINER TO ONE SIDE OF A CORRUGATING MEDIUM WITH THE PRE-PRINTED DESIGN TOWARD THE OUTSIDE SURFACE AND APPLYING A CONTINUOUS WEB OF MATERIAL TO THE OTHER SIDE OF SAID CORRUGATING MEDIUM TO FORM THE OTHER LINER OF CORRUGATED BOARD AND APPLYING GLUE MATERIAL BETWEEN EACH OF SAID LINERS AND THE CORRUGATING MEDIUM, FEEDING SAID JUXTAPOSED LINERS AND CORRUGATING MEDIUM ALONG A RELATIVELY STRAIGHT ENLONGATED PATH WHILE APPLYING PRESSURE AGAINST THE LINERS AND WHILE HEATING SAID GLUE ALONG AT LEAST A PORTION OF SAID PATH, THEREBY TO GLUE SAID JUXTAPOSED LINERS AND CORRUGATING MEDIUM INTO A RIDIG AND SAID CORRUGATING MEDIUM ALONG SAID PATH BEING AT A SUBSTANTIALLY CONSTANT SPEED OVER AN INITIAL PORTION THEREOF, DELIVERING SAID CORRUGATED BOARD OUT OF SAID PATH, CYCLICALLY CUTTING OFF LENGTHS OF SAID CORRUGATED BOARD SOON AFTER BEING DELIVERED FROM SAID PATH, SAID CYCLIC CUTTING OPERATIONS BEING REPEATED AT PREDETERMINED FIXED PERIODS OF TIME, SENSING THE POSITIONS OF SAID EVENLY SPACED REGISTER MARKS WITH REPECT TO SAID CYCLIC CUTTING OPERATION, AND VARYING THE SPEED OF THE CORRUGATED BOARD AS IT IS BEING DELIVERED FROM SAID PATH, THEREBY TO MAINTAIN THE CUT-OFF POSITION IN PREDETERMINED RELATIONSHIP WITH RESPECT TO PREDETERMINED ONES OF SAID REGISTER MARKS WHILE MAINTAINING THE SPEED OF THE CORRUGATED BOARD OVER THE INITIAL PORTION OF SAID PATH SUBSTANTIALLY CONSTANT, THE DIFFERENTIAL IN SPEED BETWEEN THE INITIAL PORTION OF THE PATH AND THE DELIVERY END BEING ACCOMMODATED BY LONGITUDINAL RESILIENCY IN THE CORRUGATED BOARD.