US 8,282,616 B2Granted

Pant-type absorbent article and a method for producing pant-type absorbent articles

AssigneeSCA Hygiene Products AB

InventorsMarcus Lehto, Lars Melin

Life of this patent

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Abstract

A pant-type absorbent article including a chassis structure including a front panel having a front end edge and first and second side edges, a back panel having a back end edge and first and second side edges and a crotch panel arranged between the front and back panels at least one of said front and back panels including an elastic nonwoven/film laminate, and a core being integrated with the chassis structure, the first and second side edges of the front panel being joined by side seams to the corresponding first and second side edges of the back panel. Each side seam is formed at least in part in a weldable connecting member, the connecting member including a first part being secured to a side edge on the front panel and a second part being secured to a corresponding side edge on the back panel, said first and second parts of said connecting member being joined by thermowelding to form said side seam.

Claims28

Dependent claims

A method for producing a pant-type pant absorbent article, each article including a chassis structure comprising a front panel having a front end edge and first and second side edges, a back panel having a back end edge and first and second side edges and a crotch panel arranged between the front and back panels, said chassis structure having an integrated absorbent core component,

the method including a pant-forming process comprising forming the chassis structure and joining the first and second side edges of the front panel to the corresponding first and second side edges of the back panel, and incorporating the absorbent core component into the chassis structure,
wherein the pant-forming process comprises:
a) producing a continuous web of connecting member blanks by joining two continuous webs of weldable material in direct face-to-face relationship along paired weld lines extending transversely across the web of connecting member blanks;
b) severing the web of connecting member blanks between each pair of weld lines to create individual connecting member blanks;
c) securing said individual connecting member blanks to a chassis web at predetermined locations along a first edge of said chassis web with said weld lines arranged in the transverse direction of the chassis web;
d) folding said chassis web along a longitudinal folding line to bring a second edge of said chassis web in alignment with said first edge of said chassis web;
e) securing said chassis web to said connecting member blanks along said second edge of said chassis web;
f) severing said chassis web between said weld lines in said connecting member blanks to separate individual pant-type articles from said chassis web,
wherein said connecting member blanks are permanently secured to said chassis web in step c) and/or in step e).

6 more elements

A method for producing a pant-type pant absorbent article, each article including a chassis structure comprising a front panel having a front end edge and first and second side edges, a back panel having a back end edge and first and second side edges and a crotch panel arranged between the front and back panels said chassis structure having an integrated absorbent core component,

the method including a pant-forming process comprising forming the chassis structure and joining the first and second side edges of the front panel to the corresponding first and second side edges of the back panel, and incorporating the absorbent core component into the chassis structure,
wherein the pant-forming process comprises:
a) producing a continuous web of connecting member blanks by joining two continuous webs of weldable material in direct face-to-face relationship along a single weld line extending transversely across the web of connecting member blanks;
b) severing the web of connecting member blanks between each single weld line to create individual connecting member blanks;
c) securing said individual connecting member blanks to a chassis web at predetermined locations along a first edge of said chassis web with said weld line arranged in the transverse direction of the chassis web;
d) folding said chassis web along a longitudinal folding line to bring a second edge of said chassis web in alignment with said first edge of said chassis web;
e) securing said chassis web to said connecting member blanks along said second edge of said chassis web;
f) severing said chassis web in said weld line in said connecting member blanks to separate individual pant-type articles from said chassis web,
wherein said connecting member blanks are permanently secured to said chassis web in step c) and/or in step e).

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 12/518,774Filed 22 Dec 2006
Published: US 2010/0063468 A111 Mar 2010
Granted: 9 Oct 2012
Term ends: Not estimatedThe source records don’t support an estimate.

Classification20 codes

A61F 13/4963
In the form of pants or briefs: characterized by the seam
A61F 13/15739
Mechanical treatment, e.g. notching, twisting, compressing, shaping: sealing, e.g. involving cutting
A61F 13/15756
Apparatus or processes for manufacturing: applying tabs, strips, tapes, loops; Knotting the ends of pads
A61F 13/496
Specially adapted to be worn around the waist, e.g. diapers or nappies: in the form of pants or briefs