PURPOSE: To eliminate the need of a large scale equipment and apprehensions of mixing dust, etc., by introducing every specified amount of hot-melt adhesive agent formed in a cord shape, melting the introduced adhesive agent with a heating means, and injecting the melted adhesive agent of the amount corresponding to the introduced amount.

CONSTITUTION: An adhesive agent introducing means 100 consists of a feeder member 104 slidable to the feeding direction of the adhesive agent X, a hook member 105 supported by a member 104 so as to be able to reciprocate between an acting position to engage with the side surface of the adhesive agent X and a saving position to be separated from the adhesive agent X, and a feeding means 108 reciprocating one end of the member 105 to the feeding direction. The introducing means 100 introduces every specified amount of hot-melt adhesive agent formed in a cord shape into a cylindrical body 10 provided with an injection nozzle 20 on its top end. The introduced adhesive agent X is heated to be melted by a heating means 200, and is ejected from the injection nozzle 20 to the outside by the amount corresponding to the introduced amount. As a result, the need of a large scale equipment and the apprehensions of mixing dust and air are eliminated.