The present invention provides an
adhesive application apparatus that can form a uniform
application layer when applying an
adhesive to an end face of a sheet bundle by an application roller even though a length or a width of the sheet bundle is not less than or not greater than a predetermined size, and a liquid amount in an immersed
coating layer formed between the surface of the application roller and the application surface of the sheet bundle can be adjusted by increasing or decreasing based on an application length and / or an application width of the sheet bundle. Therefore, level adjusting means for adjusting a liquid
surface level in an equipped accommodating chamber including an application roller to increase or decrease is provided in a glue container. This level adjusting means increases the liquid
surface level above a predetermined value by resupplying a
solid adhesive to the glue container, or is configured to enable adjusting a position of a
reflux amount restricting member that restricts (stems) an adhesive amount refluxed along the surface of an application roller, or configured to enable moving an occupied position of an accommodated liquid capacity adjusting member that adjusts an allowable
accommodation amount of the adhesive in the accommodating chamber.