To provide a manufacturing device for a product uniform in packing property by efficiently packing a bulky material such as animal hair, dendrofiber, bark, etc., into a baglike article.

The manufacturing device for the product packed with the bulky material comprises a front stage part A comprising a hopper part A1 for feeding the bulky material, and a cylinder part A2 mounted with a piston A4 provided with a press-board A3 for pushing-in the material into the baglike article, an intermediate stage part B disposing a cylindrical body B1 for mounting the baglike article, and a mechanism for pushing up the port of the baglike article and cutting the packed article, and a rear stage part C for pushing out the baglike article C3 packed with the bulky material from the rear part of the cylindrical body to a rack A7 to place/move, wherein a pushing-in mechanism moving vertically is added on the hopper part, a needlelike or a rodlike pushing in tool A5 is mounted on the front face of the press board, and a hopper entrance shield cover A6 on the rear face, thereby facilitating to obtain the product of the bulky material in a wide range such as the cotton, dendrofiber, bark, etc., efficiently and in a well-proportioned filled state.