Process and apparatus for the production of book covers componen

Details Process and apparatus for the production of book covers componen Process and apparatus for the production of book covers componen

1988-11-01

1990-12-04

Yost, Frank T.

Bookbinding: process and apparatus

Process

Of making a case

412 9, 412 23, 100207, B42C 700

Patent

active

049750100

ABSTRACT:
In the manufacture of a book cover, a cover sheet is glued to cardboard panels and portions of the sheet are folded around edges of the panels. The glued unit is then passed through a press comprising pairs of press rolls spaced apart in the direction of travel of the glued unit. One roll of each pair contains circumferentially spaced recesses along its outer periphery. The recesses prevent the application of pressing forces to the unit when the recesses reach the unit, whereby an interrupted pressing action is achieved. Each pair of rolls is operated to apply pressing forces to regions of the cover not pressed by the other pair of rolls.

REFERENCES:
patent: 2688913 (1954-09-01), Mercer et al.
patent: 3204986 (1965-09-01), Tooker
patent: 3720566 (1973-03-01), Heimann
BDM 20, "Buchdeckenmaschine fur Leistungen von 60 Decken/Minute", Brochure No. D 017.0869, by Maschinenfabrik Michael Horauf Co., West Germany, ( 8 pages).

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