US 12,642,709 B2 · Apparatus and method for manufacturing absorbent core for disposable wearable articles

Abstract

An apparatus for manufacturing an absorbent core includes: a first drum that has a first area for sucking and stacking fibers on an outer peripheral portion of the first drum and stack a first core portion in the first area; and a second drum that has a plurality of second areas, smaller than the first area, for sucking and stacking the fibers on an outer peripheral portion of the second drum and that successively transfers second core portions stacked in each of the second areas to the first drum, wherein the second drum is rotated at a high first circumferential velocity when the second drum transfers each of the second core portions and, the second drum is rotated at a second circumferential velocity, lower than the first circumferential velocity, in non-transfer time, which is after the transfer and until subsequent transfer.

Claims14

Dependent claims

An apparatus for manufacturing an absorbent core for disposable wearable articles by combining a first core portion and second core portions, the apparatus comprising:

a feeder having a defibrator configured to generate fibers crushed into a fibrous form and feed the fibers;
a first drum having a first area for sucking and stacking the fibers on an outer peripheral portion of the first drum, the first drum being configured to stack a first core portion in the first area;
a second drum having a plurality of second areas, smaller than the first area, for sucking and stacking the fibers on an outer peripheral portion of the second drum, the second drum being configured to successively transfer second core portions stacked in each of the second areas to the first drum;
and
a variable speed drive configured to rotate the second drum at a high first circumferential velocity when the second drum transfers each of the second core portions and, rotate the second drum at a second circumferential velocity, lower than the first circumferential velocity, in non-transfer time, which is after the transfer and until subsequent transfer.

2 more elements

A method of manufacturing an absorbent core for a disposable wearable article by combining a first core portion and a second core portion, the method using

a feeder having a defibrator configured to generate fibers crushed into a fibrous form and feed the fibers,
a first drum having a first area for sucking and stacking the fibers on an outer peripheral portion of the first drum, the first drum being configured to stack a first core portion in the first area, and
a second drum having a plurality of second areas, smaller than the first area, for sucking and stacking the fibers on an outer peripheral portion of the second drum, the second drum being configured to successively transfer second core portions stacked in each of the second areas to the first drum,
the method comprising:
a step of stacking the first core portion in the first area;
a step of stacking the second core portions in the second areas;
a step of transferring the second core portions from the second drum onto the first drum;
a step of rotating the second drum at a high first circumferential velocity during the transferring;
and
a step of rotating the second drum at a second circumferential velocity lower than the first circumferential velocity in non-transfer time.

7 more elements

Dependencies are inferred from the claim text.

Apparatus and method for manufacturing absorbent core for disposable wearable articles

Life of this patent

Apparatus and method for manufacturing absorbent core for disposable wearable articles

Life of this patent

Abstract

Claims14