Resources Contact Us Home
Method and apparatus for preparing book covers

Image Number 7 for United States Patent #5364215.

Apparatus and method are disclosed for preparing a preprinted book cover for application to a book block in a perfect binding system A double-walled tubular attachment strip is adhesively attached to the cover spine portion of successive covers in a continuous process. Covers are fed onto a conveyor at a constant speed with a spacing between covers and adhesives is applied to the spine areas. Simultaneously a continuous double-walled attachment strip with a longitudinal lap joint in one wall is formed without adhesive from a source of paper web stock and pressed, lap joint down, onto the cover spines to form a continuous string of covers. The attachment strip is cut by laser cutting beam between each cover while the covers are moving. The double-walled attachment strip is formed by pulling the web under constant tension through side scoring wheels, hold-down shoes, and forming devices which have surfaces to fold the edges of the moving web through toward each other to form a lap joint, Prior to forming the double-walled strip, job information is printed on the web stock at a location which appears as the inside surface of the wall of the strip opposite the longitudinal lap joint. Laser cutting is accomplished by moving a focused cutting beam in a plane normal to the plane of the strip transversely to the direction of movement of the strip.

  Recently Added Patents
Sensor interface engineering
Implementing state-of-the-art gate transistor, sidewall profile/angle control by tuning gate etch process recipe parameters
Production of battery grade materials via an oxalate method
Clamp for fence panels
Wind farm, wind power plant in a wind farm and operating control for this purpose
Compositions of PD-1 antagonists and methods of use
Selection of hash lookup keys for efficient retrieval
  Randomly Featured Patents
Cooling air distributing structure for refrigerators
Chemical process for backsurging fluid through well casing perforations
Electromagnetic wave shielding material
Process for preparing 1-carba-2-penem-3-carboxylic acid
Method of improving adhesive property of polyimide film and polymidefilm having improved adhesive property
Rotary cutting and alignment system for a printing press
Universal clock generator circuit and adjustment method for providing a plurality of clock frequencies
Apparatus for metering liquid media in offset printing machines
Scheme for realizing communications through external network from contents processing device connected to local network in home environment