To provide a method for integrating a weighing mechanism and a packaging mechanism by solving the problem that the packaging mechanism in a conventional small bag packaging process, despite progressed automation, includes no apparatus integrating the weight mechanism and the packaging mechanism because of no small mechanism for speedy and accurately weighing a weight in the weighing mechanism for weighing and cutting an ingredient, and therefore needs an alteration for connecting separately designed mechanisms and control parts on each occasion when the weighing mechanism and the packaging mechanism are combined to make a weighing and packaging apparatus to make the price of the apparatus itself expensive and to generate much time and waste of expenditure for installation of the apparatus.

A method wherein a pipe feeder type weighing mechanism and a longitudinal sealing type packaging mechanism are stored in the same housing and are mechanically connected together, and control parts are collected to complete integration, is provided.