| 摘要 |
PURPOSE: Provided is a gluing device for bookbinding by which hot melt adhesive may effectively enter every interstice between adjacent pages from the back surface of the page stack so that not only the back surface of the page stack but also the opposing back edge portions of the adjacent pages are coated with the hot melt adhesive for improved bookbinding strength between the cover sheet and the page stack. CONSTITUTION: The gluing device comprises a housing(65) for containing hot melt adhesive in a molten state; a coating roller with a periphery(at least a part of which is immersed in the molten adhesive in the housing), having an axial length substantially greater than a lengthwise size of the back surface of the page stack; a first driving unit(66) for achieving press-contact between the periphery of the coating roller and the back surface of the page stack to apply the molten adhesive on the periphery of the coating roller to the back surface of the page stack; and a second driving unit(67) for rotating the coating roller in forward and reverse directions over a predetermined small angle range, while the periphery of the coating roller is being in press-contact with the back surface of the page stack by the pressure applying mechanism, so that the molten adhesive effectively enters every interstice between adjacent pages from the back surface of the page stack and, therefore, not only the back surface of the page stack but also opposing areas, in vicinity to the back surface, of the adjacent pages are coated with the molten hot melt adhesive for improved bonding therebetween.
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