Apparatus and process for producing absorbent

Abstract

Intrusion of outside air into duct 31 is restrained without providing as much as possible a contact seal. An apparatus 10 for manufacturing an absorbent body 1, having a recessed form die 21 formed on a predetermined face 20a of a predetermined member 20, moving in one direction along a moving path along the predetermined face 20a; a duct 31 disposed in a predetermined position in the moving path, discharging a gas 3 including fluid absorbent fibers from an opening section 31a toward the predetermined face 20a, an absorbent body 1 being formed by suction of the gas 3 through intake holes at a bottom section of the form die 21 to stack into the form die 21 the fluid absorbent fibers 2 included in the gas 3 when the form die 21 passes by the position of the duct 31. A gap G is formed between the predetermined face 20a and the opening section 31a of the duct 31. A gas pressure inside the duct 31 is lower than a gas pressure outside the duct 31 by suction of the gas 3 from the bottom section of the form die 21. A first wall 43 is outside the duct 31. The first wall 43 is spaced from a wall 33 of the duct 31 by a first spacing S1 and spaced from the predetermined face 20a by a second spacing S2. An outside gas flow along a direction intersecting with the predetermined face 20a and an outside gas flow along the predetermined face 20a is made to reach the gap G by the first wall 43.

Description

technical field [0001] The present invention relates to an apparatus and a method for manufacturing absorbent bodies of absorbent articles such as disposable diapers. Background technique [0002] As examples of absorbent articles that absorb liquid, disposable diapers, sanitary napkins, and the like are used. These absorbent articles include an absorbent body 1 manufactured by forming pulp fibers into a predetermined shape. [0003] The absorbent body 1 is formed by a fiber laminating device 10a on a production line. figure 1 It is a side view of the fiber laminating device 10a partially showing its longitudinal section. This fiber stacking device 10a mainly includes a rotating drum 20 that rotates in one direction Dc. On the outer peripheral surface 20a of the rotary drum 20 is provided a concave forming die 21 configured to allow air suction from the bottom thereof. Furthermore, the spraying opening 31a of the duct 31 arrange|positioned facing the outer peripheral sur...

AI Technical Summary

Problems solved by technology

However, as a result, due to the rotation of such a roller seal, turbulent flow is induced in the region near the gap G inside the duct 31, so this roller seal cannot be used either.

Images