FR2517520A1 - DISPOSABLE LAYER AFTER USE, MADE ELASTIC - Google Patents

Abstract

THIS LAYER TO BE DISCARDED AFTER USE INCLUDES A SUPPORT SHEET 22, AN ABSORBENT PAD 26, AN UPPER SHEET 24 THERMO-WELDED TO THE SUPPORT SHEET ON THE PERIPHERAL EDGES OF THE LAYER AND ELASTIC ORGANS FORMING INTERJAMB JOINTS 24, 36 FIXED TO THE SUPPORT SHEET 24, 36 LESS THAN 19MM FROM THE BUFFER AND MAINTAINED UNDER A TENSION SUCH THAT PLEASES FORM ONLY ALONG THE GASKETS AND NOT IN THE INSET REGION 12.

Description

The present invention relates to disposable diapers and more

especially one layer

  fitted with elastic bands and curved or profiled.

  In the past, profiled layers have been made elastic, such as that described in US Pat. No. 3,860,003, issued January 14, 1975, in which elastic bands are

  attached to the crotch portions of the diaper at a distance

  that of at least 19 mm of absorbent pad in order to form elastic crotch joints designed to fit

  around baby's legs to prevent fluid loss

  from inside the layer along the legs

  bes of the baby The elastic bands are placed at more than 19 mm of the absorbent pad in order to prevent folds from forming transversely in the region of

the crotch of the diaper.

  Another layer is currently being manufactured-in which the elastic bands are located within

  19 mm of absorbent pad to form transverse folds

  versals in the crotch region of the diaper, with the aim of increasing the absorption capacity of this crotch region of the diaper However, it has been observed that these folds can behave like a gutter, which has for excessive leakage from the diaper, and the creases in the crotch area are uncomfortable for the baby's rear when the baby is sitting, especially when the diaper is not

not saturated.

  The present invention avoids the disadvantages of the layers of the prior art. According to this invention, the elastic members are placed within 19 mm of the absorbent pad, which reduces the width of the crotch joints and thereby makes the layer more

  comfortable However, the elastic bands are flat

  so that their tension can be maintained

  naked and adjusted so that there are no folds in the layer, which eliminates any risk of excessive leakage as well as the discomfort due to the presence of the folds before saturation. The subject of the present invention is a disposable diaper which is shaped like an hourglass and which comprises an absorbent body or pad disposed between a top sheet, or from above, and a support sheet, and elastic members fixed to the sheet. support but at a distance of less than 19 mm from the absorbent body The tension of the elastic members is such

  that folds only form along the watertight joints

  crotch and no folds are formed

  badly in the crotch area.

  The characteristics and advantages of the invention

  will emerge from the description which follows given as

  non-limiting example and with reference to the appended drawing in which

  FIG. 1 is a plan view of a layer made up of

  trout according to the present invention;

  Fig 2 is a cross-sectional view followed

  vant the plane 2-2 of Fig 1, of the crotch part of the diaper; and Fig 3 is a cross-sectional view along

plane 3-3 of Fig 1.

  In the appended drawing to which reference will be made and in the various figures from which the same references designate the same elements, the general reference 10 designates a disposable diaper provided with elastic bands and profiled, produced in accordance with the present invention The diaper has a hourglass configuration and has a crotch region 12 and four larger parts

  which form ears 14, 16, 18 and 20 The layer com-

  carries a support sheet 22 formed by an impermeable polyethylene or polypropylene film An upper or top sheet 24, preferably of non-woven polypropylene or polyethylene fibers is preferably heat-sealed by hot melt lines to the support sheet along peripheral edges of the layer. An absorbent pad 26 is placed between the upper sheet 24 and the support sheet 22 and may be made of wood down or the like.

  upper swim 28 and a lower padding sheet

  re 30 are used, the outline of the pad and of the upholstery sheets having approximately the shape of an hourglass Two elastic bands 34 and 36 which are provided

  of adhesive at least on their lower surface and, optionally

  tatively, on their upper surface, are bonded by their adhesive to the support sheet 22 at locations adjacent to the pad 24 and, in all cases, within

  19 mm from this buffer Strips 34 and 36 may not extend

  dre that along the length of the crotch region 12 or they can cover the ear parts of the upper padding sheet 28, as shown in Fig 3, so that the tension exerted on the support sheet and the sheet upper heat-sealed, by the elastic bands is such that creases are formed only in the crotch seals formed by the elastic bands, in the parts and 42 located outside these bands and between the bands elastic and the pad, while there is no crease in the crotch region 12 due to the fact,

  at least in part, from the sliding action of the film

  the upper padding 28 relative to the pad 26 The upper and lower padding sheets

  can be made of paper or fabric.

Claims (7)

  1 Disposable diaper containing a sheet   the support (22), an absorbent pad (26) disposed on the support sheet, and an upper sheet (24) covering the absorbent pad, the upper sheet being fixed to the support sheet on at least two opposite peripheral edges, characterized in that that it comprises two opposite elastic members (34, 36) fixed to the support sheet at   less in the central parts of their peripheral edges   opposing risks, to form joint seals   trejambe along the lateral edges of the diaper, the elastic members being placed less than 19 mm from the absorbent pad, and their tension being such that folds are formed only along the crotch joints and no folds does not form transversely in the region crotch (12) of the diaper.   2 Disposable diaper according to claim   tion 1, characterized in that the absorbent pad (26)   has an hourglass shape and ear shape (14-20)   coves of the crotch region (12).   3 Disposable diaper according to claim   tion 1, characterized in that an upper fabric sheet (28) covers the pad (26), at least part of the elastic members (34-36) being fixed to the fabric sheet (28).   4 Disposable diaper according to claim   tion 1, characterized in that the absorbent pad (26)   has an hourglass shape and ear shape (14-20)   in the crotch region (12) and in that a leaf   the upper upholstery (28) in fabric covers the pad (26), at least part of the elastic members   (34, 36) being attached to the fabric sheet (28).   Disposable diaper according to claim 4, characterized in that the upper fabric sheet (28) covers the ears (14-20), the   elastic members (34, 36) covering these ears.   6 Disposable diaper according to one of the   Claims 1 to 5, characterized in that the sheet   upper (24) and the support sheet (22) are glued   together along their peripheral edges.   7 Disposable diaper according to one of the   Claims 1 to 6, characterized in that the sheet   upper (24) is heat sealed to the backing sheet (22).   8 Disposable diaper according to claim   tion 5, characterized in that the upper fabric sheet (28) is movable relative to the absorbent pad (26) to limit the formation of transverse folds in the crotch region (12).