Method of making disposable absorbent diaper pants

• US 9,498,386 B2
• Filed: 08/30/2011
• Issued: 11/22/2016
• Est. Priority Date: 09/10/2010
• Status: Active Grant

• Current Assignee: The Procter & Gamble Company
• Original Assignee: The Procter & Gamble Company
• Inventors: Lam, Joseph Hung, Lavon, Gary Dean, Zink, Ronald Joseph II
• Primary Examiner(s): Orlando, Michael N
• Assistant Examiner(s): DULKO, MARTA S
• Application Number:
  US13/221,224
• Publication Number:
  US 20120065043A1
• Time in Patent Office: 1,911 Days
• Field of Search: 156/227, 156/160, 156/164, 156/204, 156/24.224, 156/66, 156/65, 156/266, 156/304.1, 156/515, 156/516, 156/259
• US Class Current: 1/1
• CPC Class Codes: A61F 13/15699 Forming webs by bringing together several webs, e.g. by laminating or folding several webs, with or without additional treatment of the webs
• CPC Class Codes: A61F 13/15723 Partitioning batts; Cutting
• CPC Class Codes: A61F 13/15756 Applying tabs, strips, tapes, loops; Knotting the ends of pads
• CPC Class Codes: A61F 13/15804 Plant, e.g. involving several steps
• CPC Class Codes: A61F 13/49058 characterised by the modular concept of constructing the diaper
• CPC Class Codes: A61F 13/496 in the form of pants or briefs

Abstract

Aspects of the methods according to the present disclosure relate to the fabrication of diaper pants wherein discrete chassis are advanced in a machine direction such that the longitudinal axis is parallel with the machine direction. Discrete lengths of elastic belt materials are then connected with the first waist region of a first advancing chassis and the second waist region of a second advancing chassis. The lengths of elastic belt materials are cut along the cross-direction between the discrete chassis forming a first elastic belt and a second elastic belt; the chassis are subsequently folded; and the first and second elastic belts disposed on the chassis are bonded together to create a discrete diaper pant. This apparatus and process configuration forms a continuous web of articles formed by intermittently spaced chassis and intermittently spaced elastic belts bridging the gap between the intermittently spaced chassis.

Claims

1. A process for assembling disposable diaper pants, each diaper pant comprising a chassis having a first waist region longitudinally opposed to a second waist region, and having a longitudinal axis and a lateral axis, the chassis comprising:

a topsheet, a backsheet, and an absorbent core disposed between the topsheet and the backsheet, each diaper pant further comprising a ring-like elastic belt defined by a first elastic belt connected with the first waist region and second elastic belt connected with the second waist region, wherein opposing end regions of the first elastic belt are connected with opposing end regions of the second elastic belt to form a waist opening, the process comprising the steps of;

advancing a first continuous web in the machine direction;

cutting the first continuous web into discrete chassis, wherein each chassis advances such that the longitudinal axis is parallel with the machine direction;

spacing each chassis apart from each other along the machine direction;

stretching a continuous elastic material in a machine direction;

combining the elastic material with at least one nonwoven web to form a continuous elastic web having a first surface and an opposing second surface advancing in the machine direction;

cutting the continuous elastic web into discrete elastic patches;

turning each elastic patch such that the direction of stretch is substantially parallel with a cross direction, wherein each elastic patch has a leading end region and a trailing end region;

connecting the first waist region of each chassis with the trailing end region of a first advancing elastic patch;

connecting the second waist region of each chassis with the leading end region of a second advancing patch;

cutting the each elastic patch to form the first elastic belt and the second elastic belt;

folding each chassis; and

connecting opposing end regions of each first elastic belt to opposing end regions of each second elastic belt to create discrete diaper pants.

2. The process of claim 1, the elastic material comprises outer, waist elastic strands and inner, waist elastic strands.

3. The process of claim 2, further comprising the step of removing notches of material and removing portions of lengths of the inner, waist elastic strands from the discrete elastic patches such that the discrete elastic patches define an I-shape.

4. The process of claim 3, wherein the inner, waist elastic strands do not extend across the longitudinal axis.

5. The process of claim 2, further comprising the step of removing notched regions of material from the discrete elastic patches to define leg openings.

6. The process of claim 1, wherein the first waist region is a front waist region.

7. The process of claim 1, wherein the second waist region is a back waist region.