B - Operations – Transporting – 42 – C
Patent
B - Operations, Transporting
42
C
281/7, 11/3.1
B42C 9/00 (2006.01)
Patent
CA 2011479
The process for joining bundled paper layers 13 is based on the injection of binder into the layers. This binder injection 15 can consist of pressing binder into paper layers preperforated by needles 22, perforation either taking place beforehand or in the same operation by means of injection through hollow or tubular needles 22. Another possibility of binder injection 15 involves the shooting in of binder droplets. The after-treatment 16 of the paper layers can consist of pressing and/or ultrasonic action. Optionally binder injection only takes place into the inner pages 52 of the paper layer 13 without the cover page 51 and middle page 53.
Cette invention concerne un procédé de reliure de feuilles empilées (13) par injection de colle dans les empilages. L'injection (15) peut se faire par forçage de colle dans l'empilage par des trous préperforés au moyen des aiguilles (22), la perforation se faisant soit avant ou en même temps que l'injection, auquel dernier cas les aiguilles de perforation (22) seront du type creux. Une autre possibilité d'injection (15) prend la forme de projection de gouttelettes de colle dans l'empilage. Le procédé comporte une étape ultérieure (16) de pressage et/ou de traitement par ultrasons. L'injection de colle peut aussi être limitée aux feuilles intérieures (52) de l'empilage (13), à l'exclusion de la feuille couverture (51) et de la feuille médiane (53).
Ferag Ag
Sim & Mcburney
LandOfFree
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