摘要:
An uncased book is provided with end leaves preferably having pressure sensitive adhesive initially protected with release paper which is fabricated in various alternate ways to facilitate stripping off the release paper. The case for the book has a strip of pressure sensitive coated material at the spine area. Apparatus used to case the book has a table on which the case is positioned inside up and means for centering the case relative to the table. The uncased book is placed in a clamp pivoted to the table, the clamp being adjustable for thickness of the book. The method consists in pivoting the clamp to bring the spine edge of the uncased book into contact with the pressure sensitive spine area of the case and then to strip away the release paper for the end leaves so that the latter adheres to the insides of the top and bottom covers of the case.
摘要:
An end sheet, which may be reinforced with fabric, paper or other material, is bound along with the pages of the book and the corresponding end sheet for the opposite end of the book by means of plastic strip retainers as disclosed in U.S. Pat. No. 3,730,560. The end sheet is secured to the inside of the cover of the case by adhesive. In preferred forms of the invention, at least one portion of the end sheet extends from under the spine edge of the plastic strip and folds outside the outer surface of the strip. In this form, the cover lies flat when opened. In other preferred forms, the end sheet extends from under the plastic strip in both directions.
摘要:
A machine is provided for first punching holes in sheets and then binding the sheets to form a book. Used with the machine are two thermo-plastic strips, a first having longitudinally spaced, upstanding studs and the second having holes corresponding in spacing to the studs and preferable formed with counterbores on one surface. The machine has a punch to punch the sheets. Punched sheets are placed on a platen on top of the second strip and the studs of the first strip are inserted through the holes in the paper and the holes in the second strip. A pressure foot is mechanically moved to apply pressure on the first strip to compress the paper between the two strips with predetermined force and this pressure is maintained until completion of the binding. Excess stud length protruding below the second strip is cut off a short distance below the second strip by heated knives. The knives are then moved upward, deforming the stud stubs into the counterbores in the second strip to form heads. Upon withdrawal of the knives, cooling and forming fingers are forced against the heads to shape and cool same. When the heads have hardened, the fingers are withdrawn and the pressure foot withdrawn.