US 5,236,430 AGranted

Disposable training pant having fusion-slit side seams

AssigneeThe Procter & Gamble Company

InventorRussel P. Bridges

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Abstract

A disposable garment manufactured from a fusion-slit chassis having a pair of seams. The seams are formed by folding the chassis in the crotch portion so that the longitudinal side regions of the front portion and rear portion are superposed to form seaming areas; each seaming area is treated with ultrasonic energy sufficient to sever the material of the seaming area in a first area while simultaneously bonding the material of the seaming area in a marginal area adjacent the first area to form a flangeless seam which extends from the disposable garment 1/16" or less, preferably 1/32" or less, and in a preferred embodiment will form a splice between the front portion and rear portion of the chassis. The seaming area will consist of layers of polymeric material and in a preferred embodiment will consist of nonwoven webs of 100% polypropylene fibers.

Claims17

Dependent claims

A disposable garment for wearing about torso of a Wearer's body having at least one substantially flangeless, separable side seam, comprising:

a chassis having:
a front portion comprising a polymeric material and having a front waistband, an inner surface facing the Wearer's body, and an outer surface;
a rear portion comprising a polymeric material and having a rear waistband, an inner surface facing the Wearer's body, and an outer surface;
a crotch portion between said front portion and said rear portion;
said front portion being joined to said rear portion to form two leg openings and a waist opening substantially encircled by said front waistband and said rear waistband;
and
said at least one substantially flangeless seam extending longitudinally from one of said leg openings to said waist opening, said substantially flangeless seam comprising a splice formed by joining said inner surface of said front portion and said inner surface of said rear portion in face to face relation resulting in a mass of fused polymeric material comprising said polymeric material of said front portion and said polymeric material of said rear portion, wherein said splice forms a continuous length between said front portion and said rear portion such that said splice extends about 1/16 of an inch or less from said outer surface of said front portion and said outer surface of said rear portion.

4 more elements

A disposable garment for wearing about a torso of a Wearer's body having two substantially flangeless, separable side seams, comprising:

a chassis having:
a front portion comprising a polymeric material and having a front waistband, an end edge, a first longitudinal edge, a second longitudinal edge, an inner surface facing the Wearer's body, and an outer surface;
a rear portion comprising a polymeric material and having a rear waistband, an end edge, a first longitudinal edge, a second longitudinal edge, an inner surface facing the Wearer's body, and an outer surface;
a crotch portion between said front portion and said rear portion;
said first longitudinal edge of said front portion being joined to said first longitudinal edge of said rear portion along a first substantially flangeless seam of said separable side seams and said second longitudinal edge of said front portion being joined to said second longitudinal edge of said rear portion along a second substantially flangeless seam of said separable side seams to form two leg openings and a waist opening substantially encircled by said front waistband and said rear waistband, said first substantially flangeless seam and said second substantially flangeless seam each comprising a splice formed by joining said inner surface of said front portion and said inner surface of said rear portion in face to face relation resulting in a mass of fused polymeric material comprising said polymeric material of said front portion and said polymeric material of said rear portion, wherein said splice forms a continuous length between said front portion and said rear portion such that said splice extends about 1/16 of an inch or less from said outer surface of said front portion and said outer surface of said rear portion.

2 more elements

Dependencies are inferred from the claim text.