Elasticized disposable diaper

Claim 2

A disposable diaper comprising a fluid impervious backing sheet, a fluid pervious facing sheet, an absorbent batt secured between the facing sheet and backing sheet and elastic means for contracting the crotch region of the diaper and provided by a reticulated elastic panel extending across and along the crotch region of the diaper and secured in an extended condition at least along marginal portions of the crotch region of the diaper for imparting contraction forces at least to the crotch region of the diaper.

Claim 3

A disposable diaper as claimed in Claim 1, and wherein the elastic panel is extended for imparting both 0900 o0oo transverse and longitudinal contraction forces. 0V o o~ 15

Claim 4

A disposable diaper as claimed in Claim 2, and 00 wherein when the diaper is extended to a flat condition 0 O the reticulated elastic panel is stretched by about in the transverse direction and by about 50% in the longitudinal direction of the diaper. E20

Claim 5

A disposable diaper as claimed in any one of the O oo preceding claims and wherein the reticulated elastic panel extends substantially throughout the crotch region tO 0 S0* of the diaper and is secured by lines of adhesive to the fluid pervious facing sheet of the diaper. t0 4 25

Claim 6

A disposable diaper as claicd in any one of the 00 6 %o preceding claims wherein the diaper is contoured to have a relatively narrow crotch region and the diaper is pLDil ransvrse ara lonituolnal stretcn or tne eiazbi-4% JBD 19 1888S 1888S -5 I i :A~ I i i buaching i manufactured by the use of relatively inelastic strips Ci sump-like adhesively securing the stretched reticulated elastic gj i 8. A met oi panel to the facing sheet of the diaper and before comprisin completion of the diaper, portions of the facing sheet secur and the strips are cut away at the side of the diaper to zone leave the relatively narrow crotch region of the diaper the z with adhesive securing the marginal portions in the porti crotch region of the diaper to attach the elastic panel locat to both the facing sheet and backing sheet. backi

Claim 7

A diaper as claimed in any one of the preceding secur claims and wherein lines of hot-melt adhesive secure the that elastic panel in the crotch region of the diaper to the elast. facing sheet. 0000 0 of th

Claim 8

A disposable diaper comprising a fluid pervious 00 0 u C 15 9. A met non-woven facing sheet, a reticulated elastic panel for 400 00 0 10 method in applying contraction forces to at least the crotch 00Q C- 00 0 'C non-elasti portion of the diaper and in both transverse and 0 0 forming a longitudinal directions, the elastic panel being secured pervious f by adhesive to the facing sheet in a central region of stretched 0000 20 the crotch portion of the diaper, an absorbent batt and a 00C along edge 4 0 oe fluid impervious backing sheet covering the batt and 00 0L 0~ structure secured thereto by adhesive. the marginal portions of the 00 0 00 0 0 0 and backin 0' 00 facing sheet and backing sheet being secured together by 0. 0 0 along line adhesive with the elastic panel being secured by adhesive 0 *0 0-I 0 00 0025 which will 0' 00' 25 between the facing sheet and backing sheet in the 0 C 0 00 0 00 0. C diaper whe 0' 00 marginal portions of the crotch region of the diaper, the away side arrangement being such that in the crotch region a 1888S 1888S 8 18 JBD 19 1888S 6 JBD 19 'I bunching effect is applied to the facing sheet and a sump-like shape is imposed on the absorbent batt.

Claim 9

A disposable diaper comprising a fluid pervious 00 0 u C 15 9. A met non-woven facing sheet, a reticulated elastic panel for 400 00 0 10 method in applying contraction forces to at least the crotch 00Q C- 00 0 'C non-elasti portion of the diaper and in both transverse and 0 0 forming a longitudinal directions, the elastic panel being secured pervious f by adhesive to the facing sheet in a central region of stretched 0000 20 the crotch portion of the diaper, an absorbent batt and a 00C along edge 4 0 oe fluid impervious backing sheet covering the batt and 00 0L 0~ structure secured thereto by adhesive. the marginal portions of the 00 0 00 0 0 0 and backin 0' 00 facing sheet and backing sheet being secured together by 0. 0 0 along line adhesive with the elastic panel being secured by adhesive 0 *0 0-I 0 00 0025 which will 0' 00' 25 between the facing sheet and backing sheet in the 0 C 0 00 0 00 0. C diaper whe 0' 00 marginal portions of the crotch region of the diaper, the away side arrangement being such that in the crotch region a 1888S 1888S 8 18 JBD 19 1888S 6 JBD 19 'I bunching effect is applied to the facing sheet and a sump-like shape is imposed on the absorbent batt.

Claim 10

A method i)f manufacturing a disposable diaper comprising: securing a stretched reticulated elastic panel to a zone on a fluid pervious facing sheet for a diaper, the zone being adapted to correspond with the crotch portion of the diaper when completed, and locating an absorbent batt and a fluid impervious backing sheet over the extended elastic panel and securing the components together by adhesive such that after curing of the adhesive relaxation of the elastic panel causes contraction in the crotch region ooo0 of the diaper. a o co 15 9. A method as claimed in Claim 8, and wherein the a 0a O O method includes supplying elongated substantially 0000 OC, non-elastic parallel strips of material, and adhesively O o o forming a sandwich structure comprising the fluid pervious facing sheet, the panel of elastic material in a stretched condition and the non-elastic strips extending ooc o oo, along edge portions of the elastic panel, this sandwich structure being secured by adhesive to the absorbent batt a oJ and backing sheet with the non-elastic strips extending along lines which extend outside and adjacent to portions 00 0 S°0a025 whilh will be the edges of the crotch portion of the D0 O S°diaper when completed, and in the crotch region cutting away side portions of the backing sheet and 1888S 19 JBD 19 0 00 elastic panel causes contractin in the crotch region through] of the diaper. 1.888 S 1888S -7- JBD 19 facing sheet together with sa' d strips and attached edge portions of the stretched elastic panel. A disposable diaper substantially as herein described with reference to the accompanying drawings. 11. A method of manufacturing a disposable diaper substantially as he in described with reference to the accompanying drawings. DATFD this 22nd day of February, 1984, JOHNSON JOHNSON 0001 By their Patent Attorney I 0 0000 0o1~ 0 0 000 0 of GRIFFITH HASSEL FRAZER 0 0 0 0 00 0 00 000 00 0 00 0 00 0-~00 0 00 0 00 0 00 00 0 00 0 00 00 0 00 0 00 *0 0 0 I~ 0 00 1888S 18885 20 -JB JBD 19 Figure 4 is a schematic seotional perspective view aariesiv edges o throu~gh a cqmpleted diaper prior to its packaging after JBD 19 1888BS 1888S -8 I It I i I I 0*00 0 6 0600 0~ 0 0*00 0 o ec 00 0 0 0000 0000 00 0 0 00 00 0000 0 0000 0 00 0 0 0 00 90 6 0 90 00 0* 0 00 0 00 09 0 0 0 0 00 0 00 0 40 adhesive applied along lines adjacent the regions of the a 40 Final edges of the elastic panel. substantially non-elastic transverE 1888S 9- JBD 19 1888S 00*0 0 0000 00 0 000 0 0 00 0 0 Qa 0000 0 0000 00 0 00 00 000 0 ao