DE2238427A1 - BOYS AND GIRLS DIAPERS FOR SINGLE USE - Google Patents

Description

P. 1440

PATENTANWJU.fi

oxhans ruschke

0IpIIn ₉ -HElNZ AGULAR

BERLIN 33

WtrUStr

Scott Paper Company, Industrial Highway At Tinicum Island Road Delaware County / Pennsylvania (VoSt.v.A.)

Boys 'and girls' diapers for one-time

use

The invention relates generally to single use devices Diapers and in particular absorbent pads and disposable diapers using such pads or pads * and which are specially designed for baby boys and girls.

There is a need for so-called disposable diapers that cheap, not unwieldy and capable of absorbing and retaining urine and feces as effectively as tissue diapers, when such disposable diapers are used for baby boys and girls. From the Canadian patent Wr. 820 551 has become known, disposable diapers with profiled and puffy To provide inserts made of cellulose fibers as a component, i.e. with inserts, the areas with different fiber weights per unit area at those points where the fibers with the greatest weight for absorbing the Urine will be needed. These disposable diapers are subject to view

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the applicant not the preferred embodiment for the mentioned purposes. Even in such disposable diapers is looking for Urine to completely penetrate the beading of the bulky insert in the area in which it was initially admitted, before a sufficient volume of urine can be diverted to other areas of the puffy pad to avoid an excessively strong one Prevent seepage.

The bulky inserts disclosed in the aforementioned Canadian patent are within the full transverse extent The diapers are provided so that the diapers in use excessively are heavily used because the pad is extremely bulky in the area between and around the baby's legs is and is therefore extremely stretched with the result that the deposit loses its cohesion and becomes individual separate wad disintegrates. Here, however, the absorbency the deposit is severely affected.

It has already been proposed to provide inserts in which the fibers have the same weight over the entire extension, i.e. the deposits were not profiled. However, it has never been suggested so far to produce profiled bulky insoles, because it was believed that profiling the insert in the area of the greatest fiber weight increased the absorbency of the insert would seriously affect this district. It was therefore believed that profiling for the purpose of uneven Distribution of the fiber weight in the insert would be a direct hindrance, i.e. to provide a fiber zone with a larger Has absorbency than other zones in the pad.

Although it is known per se that the urine of a baby boy is directed to a different part of the diaper than from a baby girl, the invention is based on the object of developing disposable diapers that are separately for boys and for Baby girls are used and who can aspirate a significant volume of urine without causing wetting. the Invention provides absorbent pads or cellulose fiber areas, which the special conditions when urinating boys and girls, as well as single use diapers containing such absorbent pads.

30ΠΒ07 / 0307

The invention provides an absorbent pad with an elongated section of cellulosic fibers with opposite major sides, the absorbent section predetermined Has districts with different fiber weights, the fibers with the greatest weight in a predetermined one District are included, which should have the greatest capacity for body fluids, which absorbent portion has an embossed pattern on at least one main side, which consists of a multiplicity of elevations and depressions, and that both in said predetermined area with the greatest fiber weight and in the other predetermined areas Districts, whereby the density of the inlay in the depressions is greater than in the elevations

In the present description and in the claims When used, the term "profiled" refers to the distribution of fibers with different weights in the bulky insert in such a way that the bevels with the greatest weight are provided in a predetermined area of the insert which is the should have the greatest storage capacity for urine. The term "fiber weight" refers to the weight of the fibers per unit area within the thickness of the named area, unless otherwise stated.

Each disposable diaper according to the invention has a shell with a liquid-permeable upper cover layer and a lower cover layer. Between the two cover layers mentioned there is a profiled and bulky insert, and in the upper cover layer as well as in the insert below this a pattern is embossed, whereby the profiled and embossed bulky inserts according to the invention are formed. The embossing pattern forms peaks and valleys both in the district with the greatest fiber weight and in the other districts of the insert, the density of the deposit being greater in the valleys than in the heights.

In the preferred embodiments of the invention the predetermined area with the greatest fiber weight has a smaller percentage of that of the compressed valleys formed surface district than the other predetermined ones

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Districts of deposit. The compressed valleys in the predetermined one The regions with the greatest fiber weight are preferably in the form of essentially circular compressed islands evenly distributed. These compressed islets prevent the excessive volume of urine from forming Thickness of the insert penetrates, as these islands act as a liquid wick for the urine, which is initially intended for the The district with the greatest fiber weight is directed, and these islands also help the urine to pass through to the Inlay.

It is known that the liquid storage capacity of a pad decreases when the percentage of the pad is compressed The area formed in the valleys is increased. However, it has surprisingly been shown that the area of urine permeability in the case of profiled and embossed bulky inserts of the invention according to the disposable diaper is about the same regardless of whether the percentage of the compressed area in the predetermined Zone with the greatest fiber weight is less than or substantially equal to the percentage of the compressed District in other predetermined zones of the deposit. Will the embossed area in the predetermined zone with the greatest fiber weight is decreased, therefore the liquid storage capacity is decreased promoted the diaper without affecting the wicking of the diaper.

In the preferred embodiments of the invention, extend calibrate the compressed valleys partly in the predetermined ones The largest fiber weight region in from at least one of the other regions of the absorbent pad and act as a wick for the urine initially let into the predetermined area with the greatest fiber weight, and direct the urine from the area with the greatest fiber weight to other areas of the pad.

In a disposable diaper according to the invention for a baby girl is to be used, the insert is profiled so that the one in the middle, elongated and one third the area comprising the insert has the fibers with the greatest weight. In the case of a diaper to be used for baby boys

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According to the invention, a main part of the insert is profiled in such a way that the fibers with the greatest weight are in the front, elongated and a third of the deposit area are located. • The diaper for a baby boy is preferably made with a second Insert part provided, which is located in front of the main insert, and which is enclosed in the envelope. Becomes use the front part of the diaper containing the second insert part is folded in such a way that the second insert part is over the front Part of the main insert lies, with the upper front part of the Diaper a thick absorbent area is created. The folded part also forms a dam that prevents soaking of urine initially flowing to the highest front edge of the diaper.

The insert for a girl's baby diaper and the main insert for a boy baby diaper are designed so that they are in the between the legs and around them are narrower after the diaper has been put on. Because of this design are those that occur on the insert during use of the diaper Tensions reduced to such an extent that the insert does not fall into individual parts are broken open, which would impair the absorbency of the insert »Due to the special design the insert prevents annoying clumping between the baby's legs.

The preferred embodiments "of the disposable diapers of the invention are provided with coatings or envelopes, which are formed by an upper cover layer and a lower cover layer v / earth, which layers are essentially equal to one another. Each layer consists of a loose, embossed and covered with an adhesive bonded fabric made of randomly arranged and intermingled cellulose fibers. The two top layers are imatande to hold back the urine and therefore lend the diaper according to the invention an extremely large liquid storage capacity. The upper cover layer is also permeable to liquids and therefore allows excess urine to pass into the pads.

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The invention will now be described in detail. In the accompanying drawings is the: ■

1 shows a diagrammatic representation of a first embodiment of a diaper to be used for baby girls according to FIG the invention,

Pig.2 a section along the line 2-2 in Fig.1,

3 shows a diagrammatic representation of the puffy pillow, which forms the absorbent insert of the diaper shown in Figure 1,

4 shows a diagrammatic representation of a second embodiment of a diaper to be used for baby boys according to FIG the invention,

Fig. 5 is a perspective view of the main cushion and of the secondary pad, which pads form the absorbent insert of the diaper shown in FIG.

FIG. 6 is a diagrammatic representation of the one shown in FIG Folded diaper for boys,

7 shows a section along the line 7-7 in FIG. 6,

8 is a schematic representation of a device for Manufacture of the bulky inserts according to Figures 3 and 5,

FIG. 8A shows an enlarged illustration of the outlined in FIG Part of the facility,

9 shows a diagrammatic representation of the individual components the device shown in FIG. 8 for producing the absorbent pad according to FIG. 3,

10 is a diagrammatic representation of individual components of the The device shown in FIG. 8 for producing the absorbent pads according to FIG. 5,

The disposable diapers according to the invention have a profiled one absorbent insert in a shell, which is made of a liquid-permeable upper cover layer and is formed by a lower cover layer. The diaper made for a baby girl is with an absorbent pad or with a section

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provided, which consists of a wad of cellulose fibers with a predetermined The district of the greatest fiber weight is made up of a predetermined district of the greatest fiber weight an absorbent pad differs from a baby boy diaper.

As can be seen from Figures 1-3, the baby girl's diaper is elongated and absorbent Insert 12 between a liquid-permeable upper cover layer 14 and a lower cover layer 16. The two top layers together form a cover for the absorbent pad.

16
The end margins of the lower liner extend beyond the end margins of the upper liner 14, with the end margins of the lower liner folded at the edge of the upper liner to form the end flaps 20, 22 which form reinforced regions of the yoke , into which needles can be inserted without tearing, so that the diaper can be reliably attached to the body of a baby girl.

The two cover layers 14 and 16 made of a flat material are preferably identical to one another, with each layer made of one embossed, adhesive-bound flat material made of random arranged and intermingled fibers consists of about $ 75 wood pulp fibers for paper manufacture with a length of less than 6.3 now and of un-, about 25 $ long synthetic fibers with a length of 5 cm and a thickness of 1.5 denier. Other short fibers, such as cotton linters, can also be used in the cover layers; However Wood pulp fibers are preferable because they are cheaper than other short fibers and also more readily available. Others can too long fibers are used * which increase the strength of the top layers without compromising absorbency, flexibility, drape, softness and grip. Further Other ratios may be used for the short and long fibers, but it is preferable to use the largest possible Percentage of cheaper short fibers to be used without adversely affecting the above characteristics. These Cover layers have a basis weight up to about 70 g / m 2. The two cover layers 14 and 16 are with the help of a suitable

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Machine made, e.g. by means of an Eando Webber machine or a Rando-Mizer machine, both from the curlator Corporation of Rochester, New York.

With the help of the machines mentioned, a loose, fibrous and flat material is produced, which is then sprayed over with water and is introduced into the gap between two rollers. At least one of the rollers has a high relief pattern on the circumference provided with the valleys compressed into the material are embossed, separated by uncompressed ribs that run over the entire length of the material · The moisture contained in the material ensures that the embossed pattern is retained. An adhesive is then applied to both sides of the flat material, which gives the material strength and abrasion resistance. The adhesives used are preferably self-linking Acrylic mesh used} however, other adhesives can be used that give the material the required strength and strength Give abrasion resistance. The material is then passed through a heating oven, in which the material is dried and the adhesive is cured, whereby the cover material 14 and 16 is produced.

If desired, a liquid-tight plastic film can be attached to the exposed side of the lower cover layer 16 through which body fluids cannot penetrate, A disposable diaper according to the invention, which has a liquid-impermeable lower layer can be used without protective clothing, e.g. without rubber or plastic pants, which are currently required when using conventional thread diapers. The upper cover layer 14 must be permeable to liquids, so that body fluids can penetrate into the underlying insert 12. In the preferred embodiment of the invention The upper cover layer is not only permeable to liquids but also holds the urine together with the absorbent pad ■ back so that the diaper is extremely effective in absorbing moisture.

The elongated absorbent pad 12 is preferably made from a bag of cellulosic fibers, e.g.

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Wood pulp fibers, as they are used in the paper corrugation with a length of less than 6.3 mm This pad or cushion can be made using a Joa-Fiberizer machine, which is made by JOA _f Inc., North Wales is made in Florida. The absorbent pad 12 has a front end edge 24 and a rear end edge 26, which two edges are connected by the opposing and curved side edges 28, 30, forming a substantially hourglass-shaped pad, the narrower central portion of which is between and around the legs is applied around. Because of this configuration, the insert is less stressed during use of the diaper, which prevents the insert from being broken into individual separate parts of fibers which would impair the absorption capacity of the insert.

The absorbent pad 12 shown in FIG. 3 consists a pad of cellulosic fibers with an elongated front region 32, with an elongated region at the rear 34 and with an elongated district 36 in the middle, each of the three districts mentioned a third occupy the longitudinal extension of the insert 12. As is well known, the urine of baby girls is directed into the central area of a diaper, so that the absorbent pad 12 is profiled so that the greatest fiber weight is in the one in the middle District 36 is located. However, this measure does not prevent excess urine from seeping out of the diaper. The applicant found that the urine drained into the central area (with the greatest fiber weight) is the liner in it Seeks to soak the district completely without spreading further, i.e. large areas of the deposit remain dry and are therefore not used for the intended purpose.

The applicant has also found that the insert 12 works best when all three districts 32, 34 and 36 be provided with the impressions already described. The embossing pattern is in the upper cover layer 14 and in the the absorbent insert 12 underneath is pressed in.

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These identical embossing patterns consist of pressed together Valleys formed by a first group of spaced apart elongate channels 38 which are essentially run over the entire longitudinal extent of the front and rear districts and extend partly into the central district 36. These same embossing patterns also consist of a second group of spaced apart elongate channels 40 which run transverse to the first group of channels. The elongated ones Channels 38 and 40 are preferably straight; however, other patterns such as zigzag or wave patterns can also be used be used. The crossroads of the canals can be circular, squeezed together square or otherwise.

The embossed pattern in the elongated one in the middle District 36 consists of valleys in the form of equally spaced and essentially circular compressed valleys Islands 42 »around which uncompressed heights 44 are located · In the central region 36 is the ratio of the area of the compressed Islands 42 to the total area smaller than the ratio of the areas of the compressed channels 38 and 40 to Total area of the respective front and rear districts · In a preferred embodiment of the invention, is Proportion of the area of compressed districts 42 in the central district is approximately 656, while the proportion of Area of the compressed channels 38 and 40 in the front and back wards is about £ 13-20. The circular ones pressed-in islands 42 in the elongated region 36 located in the middle prevent excessive wetting of the urine by dispersing the urine over substantially the entire extent of the pad. Since the The pressed-in islands 42 only occupy a small percentage of the area of the central region 36, so the high absorption capacity of the central district is not restricted because this district has the largest fiber weight. It has Surprisingly, it was found that the pressed-in islands 42 interact with the channels 38 and 40 and so do the urine forward effectively like an insert, in which the pressed-in islands are replaced by a larger percentage of pressed-in valleys in Shape of the channels 38 and 40 have been replaced. The elongated ones

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Channels 38 extend into the elongated ones located in the center District 36 and divert the excess urine lengthways from the central area into the anterior and rear districts, while the transverse channels 40 carry the urine in the transverse direction between the side edges 28 and Route 30 to the front and rear districts.

The profiled and embossed insert described above leads to an extremely effective utilization of the fibrous material in the absorption of urine in the disposable diaper 10. The applicant is not aware of any suggestion in the case of disposable diapers to use an embossed and profiled bulky insert and especially not the insert described above. The absorbency the diaper 10 is further promoted by the fact that the upper cover layer 14 consists of a fibrous flat material, which cooperates with the elongated absorbent pad and direct excess urine into the absorbent pad 12. The upper cover layer 14 is preferably provided with an embossed pattern, as already described. This embossing pattern works wick-like and directs the urine over a substantial area of the top liner, so that the liquid absorbency the upper cover layer is used most effectively. This embossing pattern also works with the one below absorbent pad 12 pressed embossed pattern together and supports the transmission of the body fluid to the entire absorbent pad.

The profiled and designed insert 12 is located

between the upper cover layer 14 and the lower cover layer 16,

ch which two layers of fabric on each other by adhesive tape or Staples are attached outside of the absorbent pad 12. The embossing pattern on the upper (jewel layer and on the insert also serves to stabilize the insert in the upper and lower fabric layer.

An example of a preferred embodiment of a disposable diaper 10 for baby girls will be described below. These diapers kcii2 ^ n can of course be made in various sizes, and likewise, inserts with different weight distributions can be used depending on the particular use of the diaper

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e.g. during the day, at night, when traveling or with small children.

example

The disposable diaper 10 according to the invention is provided with an absorbent Blow the insert between two layers of fabric and with an embossed pattern pressed in, as already described. the upper fabric layer has a length of approximately 40.6 cm and a width of 35.5 cm, while the lower fabric layer by approximately 7.6 cm longer, i.e. a total of 48.2 cm in length and therefore a 3.8 cm overlap on the end tabs 20 and 22 having. The insert is 30.5 cm long and cut in the shape of an hourglass, so that the width in the middle is only 7.6 cm amounts to. The greatest width at the opposite ends is about 17 »8 cm. The front and the rear, one third each the area comprising the liner contains 5 grams of fibrous material, while the central area contains 10 grams of material.

There were four diapers in the designs described below manufactured.

I. No embossing pattern was pressed into the insert through the upper fabric layer.

II. In the front and rear district of the deposit were Groups of channels 38 and 40 pressed in, while no channels were pressed into the central area. The channels mentioned did not extend into the central district.

III. Execution like II, but with circular pressed islands 42 in the upper fabric layer and in the insert in the in the middle district.

IV. Finish as nine III except that the turned press ^s th channels 38 is up to about 12.7 mm in the center of the insert district ine stretched.

V. Channels 38 and 40 were pressed into all three areas of the insert and into the upper fabric layer. The two above-mentioned examples of channels 38, 40

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ran in a straight line at a width of about 1.6 mm and with a distance of about 2Q ₁ 6 mm from center to center. The intersection points of the channels were formed by circular impressions with a diameter of 6.3 mm. These islands 42 formed transverse lines with the islands in one row being located approximately midway between adjacent islands in the other row. In each row the distance between the centers of the islands was 38 mm, while the distance between adjacent rows was approximately 9.5 mm. fraud.

A container became 50 ecm in approximately 60 seconds Poured water directly on the ugly area of all diapers, i.e. on the area which contained the greatest fiber weight. Three minutes later, the top fabric ply was removed from the liner peeled off, and the area of the liquid spread on the pad was measured. In addition, the area spread of the liquid measured on the lower fabric layer. The four diapers listed in the table below were used from the four diapers Average values calculated.

Spreading area or pattern

Liquid in cm I II III IY V at the top of the

Deposit 12.8 10.3 100.0 171.6 157.4

on the lower tissue _o

location 174.2 166.4 78.0 92.9 65.8 cnT

As can be seen from the above results, in the examples without an embossed pattern in the central area of the inlets (I and II), there was no significant spread of the urine on the insert. In addition, there is substantial soaking through the lower fabric layer, as can be seen from the high values. With similar patterns III, IT and V, the spreading areas on the lower fabric layer were approximately the same size and significantly smaller than with patterns I and II. This shows that the embossments in the central area influence the suction effect of the insert and cause excessive book wetting impede. In the case of pattern IV, in which the pressed-in channels 38 partially extended into the central region of the insert, the suction effect was better than in those diapers in which

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the pressed-in channels 38 did not extend into the central area (Pattern III). In fact, the spreading area on the inlay was in the case of the IY pattern (with the embossed points in the Central district) larger than in the case of the pattern V, in which the pressed-in channels 38, 40 are completely in the three districts of the Insert into it.

The examinations described above were made when flat. carried out diapers that are spread out and not worn on babies, so that the values obtained do not exactly correspond to those values that would be obtained in the use of the diapers. However, the above results show the relative values, which can be expected in the use of the diaper. From the Investigations also clearly show that the extension of the pressed-in channels 38 to the central area with the largest Fiber weight into it is desirable for urine spread on the liner, so that the absorbent material is used most effectively. Furthermore, the pressing in is essentially Circular islands 42 at equal intervals in the central area are just as desirable as the pressing-in of channels 38 and 40 in this area, since the pressed-in islands make up a smaller percentage of the Take up the area of the central district as the press-fit channels and therefore the liquid storage capacity of the central district not affect as much as the press-fit channels would do

The diaper 10a shown in FIGS. 4-7 and intended for baby boys has an elongated absorbent Insert 12a on, which is different from the insert 12 of the first embodiment differs. The lower fabric layer 16a forms together with the upper fabric layer 14a a shell which is similar to the shell formed by the fabric layers 14 and 16 of the disposable diaper 10. The two fabric layers 14a and 16a cooperate with the absorbent insert 12a in the same way as the cover with the absorbent pad 12 of the diaper 10 cooperates, and also a thin plastic film can be provided as in the Diaper 10.

As shown in Fig.5, there is the absorbent

Insert 12a from a main cushion 50 and from a secondary cushion

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The longitudinal extension of the main cushion 50 is limited by the two edge parts 54 and 56. The upper and lower fabric layers 14a and 16a extend beyond the front edge portion 54 of the main pillow and form a front edge region 55 of the disposable diaper 10a in which the secondary pillow 52 is located a distance, thereby forming a transverse region 58 which has a smaller volume than the transverse regions of the diaper including the main and secondary pads, thereby forming a transverse delimitation line along which the front edge portion 55 folds over can be _r so that the secondary pad 52 is located over the front portion of the main pad 50, as shown in FIGS. If desired, a single pad can be provided with a transverse indentation line separating the bilateral main and secondary pillows, the indentation line defining the small volume area where the diaper can be folded.

As can be seen from Figure 5, the main cushion 50 is like this configured that there is a front elongated region 32a, a rear elongated region 34a and one in the Central elongated district 36a forms, with the length of each district is approximately one third of the total length of the main pillow 50. It is well known that with a baby boy the urine is initially directed against the front portion of a diaper so that the main pad 50 is in the front elongated portion 32a is provided with a greater fiber weight than the rear and the central region 34a and 36a, so that the larger fibers are located in the area that must have the greatest absorption capacity. The rear elongated one District 34a has the lowest fiber weight, since this district primarily contains those contained in the feces Intended to absorb moisture and not intended to absorb a large volume of urine. The secondary pad 52 has substantially the same fiber weight as the central elongate region 36a and about half the length of the front elongated region 32 a of the main cushion 50.

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As shown in FIGS. 4 and 5, the upper fabric layer Ha and the insert 12a located below it in the three elongated districts 32a, 34a and 36a one pressed in Embossing pattern on. This pattern exists with the one in the middle and in the rear area of pressed-in valleys, those of a first group of spaced apart and elongated ones Channels 38a are formed, which over substantially the entire longitudinal extent of the rear and central elongated district and extend only partially into the front elongated district 32a. This Embossing pattern also consists of a second group of spaced apart elongate channels 40a which are transverse to the first group run through channels in the back and middle section, cut them and direct urine across the pad. the Channels 38a and 40a are similar to channels 38 and 40 of the girls' diapers 10. The pressed-in pattern in the front elongated District 32a has valleys in the form of spaced apart and essentially circular compressed islands 42a which are surrounded by uncompressed areas 44a · These islands 42a are similar to the islands 42 of those intended for girls Diapers 10.

The ratio of the area of the compressed islands 42a in the front elongated region 32a to the total area of the front elongated area is smaller than the ratio of the area of the compressed channels 38a and 40a in the front and rear elongated district to their respective total area. In a preferred embodiment of the invention the fraction of the area of the compressed islands 42a in the front elongate region is about 6 #, while the The proportion of the area of the compressed channels 38a and 40a in the rear and central regions is 13 to 20 #. the circular compressed islands 42a and the compressed Channels 38a and 40a across in the relevant sections perform the same function as the islands 42 and the channels 38 and 40 in the respective sections of the insert 12. In the preferred Embodiment of the invention is the secondary pad 52 still with the elongated and transverse channels 38a

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and 40a, which support the transfer of the liquid via the secondary cushion

The main cushion 50, which is delimited by the side edges 28a and 30a, is designed to be narrower in that region which is in the Use of the diaper between the legs and around them. Due to this configuration, the stress of the main cushion is reduced, so that the cushion is prevented from breaking into individual fiber parts during use, which the Would impair the cushion's absorption capacity.

The disposable diaper 10a is intended to be used with the front edge 55 folded over, as shown in FIGS. 6 and 7, wherein the secondary pad 52 is located over the front elongate region 32a of the main pad 50. With this measure so. "1 aimed at that once a larger amount of absorbent Material enters the front region of the diaper where the material is needed to absorb a boy’s urine a dam is to be built that will It is difficult for the urine to escape at the front end of the diaper. The exit of the urine is hindered by the aspiration on the after inwardly folded edge portion 55 of the diaper on the transverse Fold line 58, as can be seen from FIG. 7.

Below is a preferred embodiment of a Disposable diaper 10a according to the invention for boys described as an example. In the context of the invention, the diapers can of course can be produced in different sizes, and depending on the particular use, e.g. during the day, at night, during For transport or for small children, etc., cushions with different weight distributions can be provided.

example

In the manner already described, a main cushion and a secondary cushion are arranged between an upper and a lower fabric layer. The upper fabric layer has a length of 43.2 cm and a width of 35.5 cm. The lower fabric layer has a length of 48.8 cm and an overlap of 2.8 cm at both ends, whereby the end flaps 20 and 22 are formed. The length of the main pillow is 30.5 cm _:

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The main cushion is divided into a front, a middle and a back area with a length of 10.2 cm each. The middle elongated district has a width of only 7.6 cm in the middle. The front area of the main cushion is essentially rectangular and has a width of 12.7 cm. The rear area of the main cushion is designed essentially square with an edge length of 10.2 cm. The secondary pad is spaced approximately 6.3 mm from the front portion of the main pad and contains 4.3 grams of fiber material. The front section of the main pillow contains 8.6 grams, the middle section contains 4.3 grams, and the rear section contains 2.8 grams of fiber material. The embossed pattern pressed into the upper fabric layer corresponds to the pattern that was described for the diaper 10 for girls.

The profiled deposits according to the invention have a region with the greatest fiber weight, which is thicker and / or denser than other counties is. If the density of the insert is essentially the same, the area with the greatest fiber weight is the thickest District of deposit. With essentially the same thickness of the entire insert, the area with the greatest fiber weight is the dicjtest district of the deposit.

In the figures 8, 8A and 9 a device is shown, with that of the profiled, contoured and absorbent pads 12, which can be used for the disposable diapers 10 for baby girls.

The device shown in FIG. 8 has a defibering section 101 on with a rotating tear roller in a formation chamber 103. The ice roller 102 consists of the conventional design with a large number of teeth on the circumference, which tear individual fibers out of the paper material webs 104 and 104 ', which are introduced into a stream of air that divides the fibers into individual compartments 120 of a formation ribbon assembly 106 in the formation chamber 103 by utilizing a pressure difference that passes through the compartments 120 of cushion forming Vacuum chambers 108, 110 and 112 are created below the upper portion 114 are arranged close thereto. The formation belt 106 is guided around the rollers 109 and 111,

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of which at least one roller is driven, which the formation belt through, the formation chamber 103 is conveyed in the direction indicated by the arrow 107.

If desired, only one of the paper _{stock webs 104 f} 104 ¹ can be introduced into the fiberizing section. Furthermore, the fiberizing section 101 can also be arranged at the point 101 »shown with broken lines, or a second fiberizing section can be provided at 101 ' both sections in the manufacture of the profiled, contoured and absorbent pads 12 can be used.

As can be seen from Pig. 9, the formation band arrangement 106 a relatively thin and open-meshed one Conveyor belt 116, which is covered with a relatively thick (e.g. 12.7 mm) and liquid-impermeable belt 118, from which parts have been removed so that elongated compartments 120 with the particular outline of the absorbent pads 12 can be formed. The conveyor belt 116 is on the end edges and provided at intervals with openings 113 which cooperate with pins, not shown, on the bearing rollers 109 and 111. The liquid impervious tape 118 is preferably made of a semiconducting material, which is static Discharges charges during the manufacture of the insoles. Each compartment 120 has an underside that of the open mesh Conveyor belt 116 is formed (Fig.8A and 9), and the absorbent Inlays 12 are produced in such a way that their longitudinal extent is transverse to the direction of movement of the formation band arrangement 106 runs.

Between the open-mesh conveyor belt 116 and the Deposition-producing vacuum chambers 108, 110 and 112 become profiling masks 122, 124 and 126 arranged. The profiling mask 122 has an open-mesh, air-permeable and in the middle

inconvenient elongated district 112a on as well as the air-permeable and elongated districts 122b and 122c Die Profiliermgske 124 also has an open-mesh, air-permeable and in the middle, elongated area 124a and the air-impermeable elongated areas 124b and

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124o on. The profiling mask 126 has one located in the middle and air-impermeable elongated region 126a, as well as the open-meshed, lift-permeable and elongated ones Districts 126b and 126o.

The individual vacuum chambers 108, 110 and 112 protrude the connecting lines 127 (of which only one line is shown in the Pig * 9) with a suction fan or with a similar, not shown device in connection. To regulate the volume of air flowing through the vacuum chamber in question is sucked, each air line can be provided with a suitable valve. On the other hand, the valves can also can be omitted, the vacuum chambers being individually connected to separate suction fans.

In operation, the formation belt assembly 106 moves in sequence over the contouring masks 122, 124 and 126 in FIG sighting indicated by arrow 107. The fibers carried by the air flow are removed from the vacuum chambers sucked into the compartments 120 and deposited on the conveyor belt 116. The elongated central region 36 of each absorbent Inlay 12 is created in the center of each compartment 120, which center portion on center wards 122a, 124a and 126a of the profiling masks 122, 124 and 126 is aligned. The front and back panels 132 and 134 of each absorbent Insert 12 are produced in the end districts of each department 120, which end districts correspond to the end districts of the Profiling masks 122, 124 and 126 are aligned. The fibers carried along by the air flow are therefore in the central area of each compartment and form the central, elongated region 36 of each absorbent pad 12, if each compartment 120 migrates over the profiling masks 122 and 124 and over the vacuum chambers 108 and 110 and this as this is the only area in each compartment 120 through which the air from vacuum chambers 108 and 110 is drawn. Further, the fibers entrained by the air flow are directed into the end zones of each compartment 120 and form the front and rear elongated districts 132 and 136 of each absorbent pad 12 when each compartment 120

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wanders over the profiling mask 126, since the end districts the are the only areas through which the air from vacuum chamber 112 is drawn. Since in the central district of each department 120 a pressure difference is effective, which is generated by the vacuum chambers for a longer period of time than in the End districts of each department, a greater laser weight is deposited in the central district than in the end districts, whereby the profiled, elongated and absorbent pads are produced.

In the device shown in Figure 10 for producing the absorbent pads 12a, the formation band arrangement 106 has been replaced by the arrangement 106, and the profiling masks 122, 124 and 126 have been replaced by the profiling masks 122 ¹ , 124 'and 126 *. The formation ^{belt arrangement 106 1} has a relatively thin and open-meshed conveyor belt 116 'on which a relatively thick (eg approximately 12.7 mm thick) impermeable belt 118 is placed. The conveyor belt 116 is identical to the conveyor belt 116, while the impermeable belt 118 differs from the belt 118 in that sections have been removed from the belt so that several compartments are formed, namely the main and secondary compartments 120 aligned across one another The outline of the main compartments 120 'corresponds to the outline of the main pad 50 of the absorbent pad 12a * while the outline of the secondary compartments 120 "corresponds to the outline of the secondary pad 52 of the absorbent pad 12a. Each group of compartments is at a distance from an adjacent group of compartments in the direction of movement of the formation belt (arrow 107 ').

A profiling mask 122 'is arranged above the vacuum chamber 108 and consists of the four individual areas 122a ¹ , 122b "122c ⁸ and 122d". The areas 122a »and 122d * are open-meshed and therefore permeable to the air that is sucked through by a suction fan or another device (not shown) which is connected to the vacuum chamber 108 via an air line (not shown). The air-permeable district 122a »is on the central district of each main department.

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lung 120 »aligned, in which the district located in the center is produced 36a of the main cushion 50, while the air-permeable district is aligned from each secondary compartment 120 ⁿ 122d · when the formation tape assembly 106 'passed over the vacuum chamber 108 in the direction of arrow 107 ¹ will. As each group of compartments 120 * and 120 "migrates over the vacuum chamber 108, the fibers carried by the air in the formation chamber 103 are directed into the central area of the main compartment 120" and into the secondary compartment 120 "with the fibers on the conveyor belt 116 · Be deposited.

The profiling ^{mask 124 1} has only one open-meshed and therefore air-permeable area 124a ¹ , while the other areas are impermeable to air. This area 124a ¹ is aligned with the end area of each department 120 * in which the front elongated area 23a of the main cushion 50 is produced. As each group of compartments 120 »and 120 * migrates over the vacuum chamber 110, the fibers carried along by the air flow in the formation chamber 103 are directed into the end area of the main department 120 and create the front elongated area 32a of the main cushion 50 elongated area 32a of the diaper has to have a greater fiber weight than the other areas of the absorbent insert 12a, a larger volume of air is sucked through the vacuum chamber 110 than through the vacuum chambers 108 and 112, for which purpose valves (not shown) in the air lines 127 with a suitable setting are switched on, which lines connect the vacuum chambers with a suction fan or with another such device (not shown).

The profiling ^{mask 126 1} has only one open-meshed and therefore air-permeable area 126a ¹ , while the other areas of this profiling mask are impermeable to air. The air-permeable area 126a ¹ is aligned with the end area of the main department 120 * in which the rear area 34a of the main cushion 50 is produced. Since the weight of the fibers deposited in the rear region 34a is smaller than the weight of the fibers contained in the other regions of the absorbent pad 12a, the vacuum chamber 112 becomes the smallest

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Volume of air sucked through.

In operation, when each group of compartments moves over the vacuum chamber 108 and over the profiling mask 122 ', the central region 36a of the main pillow 50 and the secondary pillow 52 are created with the same fiber weight. When each group of compartments migrates over the vacuum chamber 110 and over the associated profiling ^{mask 124 1} , the front elongated region 32a of the main cushion is created, and when each group of compartments migrates over the vacuum chamber 112 and over the associated profiling mask 126 *, so will the rear region 34a of the main cushion is generated.

As shown in Figures 9 and 10, each profiling mask is provided with a handle 130 or similar means at one end so that each profiling mask can be easily removed when it is passed through another profiling mask is to be replaced, or if the device 100 without Profilieraiasken should work · By exchanging or omitting profiling masks, the device 100 for producing various absorbent pads are used.

To produce the disposable diapers for boys (10a) or for Girls (10) can use the same method and device for inserting absorbent pads between a top and a lower layer of fabric can be used. The following description is therefore of a method of loading the manufactured absorbent pads 12 between a top and a lower fabric layer 14, 16 in the manufacture of disposable diapers restricted for girls.

As shown in FIGS. 8 and 8A, the exposed upper side HO of the absorbent pads 12 produced in FIG Form of cushions of cellulose fibers from teeth or bristles a rotating spinneret 142 located at the exit end of the formation chamber 103. The absorbent. insoles are then passed around the formation belt roller 109 and brought into contact with the lower fabric layer 16 * these The lower fabric layer 16 interacts with the meshed conveyor belt 116 and retains the absorbent pads in the compartments 120 * The lower fabric layer 16 is synchronized with the

309807/0307

Movement of the formation belt 106 from a drive, not shown, to a point where the fabric layer 16 with the upper portion 144 of a conveyor 146 is in contact. The lower fabric layer 16 and those located above it Absorbent pads 12 are passed over a transfer vacuum chamber 148 which is directly below the top portion of the Conveyor 146 is located. The vacuum chamber 148 creates a pressure difference across the insert 12, which is therefore from the lower Section of formation ribbon assembly 106 onto the upper section 144 of the conveyor 146 is transferred. This negative pressure is effective through the lower fabric layer 16, since this Layer is permeable to air. However, since the insert is relatively thick, it prevents the air from being sucked through Insert a resistance against, with the above-mentioned pressure difference is produced. This pressure difference is at the Maintaining the liner as the formation belt assembly 106 travels around the roll 111, the lower portion of the Formation belt assembly 106 separates from the upper portion of conveyor 146. The absorbent pads 12 are placed on the lower fabric layer 16, when it is conveyed away by the conveyor 146, on the between adjacent ones The upper exposed side 147 located in the absorbent pad 12 is at a station shown schematically at 150 an adhesive applied. Behind station 150, the absorbent pads 12, a top fabric layer 14 is placed on top, creating a composite assembly consisting of the absorbent inserts 12 and the two fabric layers 14 and consists. The whole thing then becomes successive, not Completion stations shown, at which the individual disposable diapers are manufactured.

The device 100 can be used to create profiled, contoured and absorbent pads for the manufacture of the disposable diapers 10 and 10a can be made according to the invention. The construction of a device for folding the insert cushions and the two Fabric layers for the production of the disposable diapers lies in the ability one of ordinary skill in the art, so that the description of such a device has been dispensed with.

Claims 3 0 9 8 0 7/0307

Claims (1)

_ 25 - Claims V. Absorbent pad with an elongated absorbent portion made of cellulose fibers, which absorbent Section has opposite major sides and predetermined districts with different paser weights, the largest fiber weight being contained in a predetermined area in which it is used for the retention of body fluids is most needed, characterized in that said absorbent portion (12) is attached to at least a main face is provided with an impressed pattern which has a number of heights (44, 44a) and valleys (38, 38a, 40, 40a) forms the largest in the named district Paser weight and in other predetermined districts and that the paser density in the valleys is greater is than in the mentioned heights. 2 · Absorbent insert according to claim 1, characterized in that that said absorbent portion comprises a pad made of cellulose fibers, the transverse dimension of which is limited by spaced elongated side edges (28, 30), and that at least part of the Margins is set back, with a narrow step district (36, 36a) is formed. 3. Absorbent pad according to claim 1 or 2, characterized in that at least some of said valleys connect the predetermined district of the greatest paser weight with adjacent districts. 4 absorbent insert according to one of claims 1 to 3, characterized in that said predetermined areas (32, 34, 36, 32a, 34a, 36a) are in the longitudinal dispersion the insert (12, 12a) are aligned with one another. 309807/0307 5 · Absorbent insert according to one of the preceding claims, characterized in that the longitudinal extension of the insert (12, 12a) between the front (24 »54) and the rear (26, 56) end edges that a front elongated region (32, 32a) of the insert with the one End at the said front end edge ends, that a rear elongated region (34, 34a) with one end at said rear end edge that ends between the an intermediate elongated region (36, 36a) is located in the front and rear regions, and that the fiber weight in one of the front and middle districts, the aforementioned predetermined district with the greatest fiber weight forms. 6. Absorbent pad according to claim 5 »characterized in that the fiber weight in all predetermined Districts is evenly distributed within the entire district concerned. 7. Absorbent pad according to claim 5 or 6, characterized characterized in that the front, middle and rear sections are substantially the same length have, which is essentially a third of the longitudinal extension of the insert. 8. Absorbent pad according to one of claims 5 to 7, which as an absorbent component of a disposable diaper for Boy is usable, marked! that said front district is said predetermined district with the greatest fiber weight. 9 · Absorbent insert according to claim Θ, characterized in that that the ratio of the area of the valleys (42a) in the front district (32a) to the total area of the front district is smaller than the ratio of the valleys (38a, 40a) in the central district to the total area of the central district as well as smaller than the ratio of the area of the fäler (38a, 40a) in the rear district (34a) to the total area of the 309807/0307 rear district. 10. Absorbent pad according to claim 8 or 9 »characterized in that pressed-in pattern has valleys (38a), those from a first group of at a distance elongated channels consist essentially in the Longitudinal extension of the insert over the rear (34a) and the central (36a) district run and become extend only partially into the front region (23a) of the insert. 11c absorbent pad according to claim 10, characterized in that that the pressed-in pattern has valleys (42a) made up of substantially evenly distributed compressed Islands in the front region (32a) consist, as well as valleys, which are made up of a second group of spaced apart Channels (40a) in the rear (34a) and in the middle (36a) area of the insert, and that each channel (40a) of the second group is substantially transverse to the channels (38a) of the first group and liquids across the Deposit directs 12. Absorbent pad according to one of claims 5 to 7 » used as an absorbent inventory of disposable diapers for girls is usable, characterized in that the middle district (36) with said predetermined district the largest fiber weight. 13 «Absorbent insert according to claim 12, characterized in that that the ratio of the area of the valleys in the central district to its total area is smaller than that Ratio of the area of the valleys in the front district to its total area and smaller than the ratio of the valley area in the rear district to its total area. 14 «Absorbent insert according to claim 12 or 13, characterized in that the pressed-in pattern has valleys, those from a first group of at a distance 3 0 9 8 0 7/0307 elongated channels (38) exist in the longitudinal extension of the insert essentially over the entire rear (34) and over the front region (32) run and only partially extend into the middle district (36). 15. Absorbent pad according to claim 14 _f, characterized in that the pressed-in pattern also has valleys (42), which consist of essentially evenly distributed compressed islands with a central region, and valleys (40), which consist of a second group of spaced apart There are channels in the back and front regions of the pad, and that each channel (40) of the second group runs substantially across the channels (38) of the first group and directs liquids across the pad. 16. Disposable diaper with an elongated insert made of cellulose fibers according to one of the preceding claims, which insert is contained in a cover provided with an upper liquid-permeable fabric layer, characterized by a pressed-in pattern on the upper fabric layer and the insert located below this, which pattern is from a number consists of peaks and valleys on the upper fabric layer and on the layer below it, and characterized in that said valleys are provided in the predetermined area with the greatest fiber weight and in the other predetermined areas, and that the paser density in the valleys is greater is than in the mentioned heights ₀ 17 · Disposable diaper according to claim 16, characterized in that that said upper fabric layer made of a flat material of randomly arranged and mixed with one another short cellulose fibers as well as long reinforcing synthetic fibers that the flat material consists of the outside is provided with a second pressed-in pattern, which enhances the flexibility and the 309807/0307 ability of the material promotes that said second impressed pattern of a number of peaks and valleys is formed, which are distributed essentially over the entire surface of the sheet material, that the density of the Material in the valleys of the second impressed pattern is greater than the density of the material in the heights of the second impressed pattern, and that the fibers of said flat material through an adhesive network are connected to each other that the strength and the abrasion resistance of the material without affecting it Flexibility increased. 18. Disposable diaper for boys with an absorbent Hauptgiied in the form of an absorbent insert according to one of claims 1 to 1, which insert is contained in a cover provided with a liquid-permeable fabric layer, characterized by a second absorbent member, and characterized in that the The longitudinal extension of the main absorbent member between spaced front and rear edges runs so that the shell extends over the front edge of the main absorbent member and forms a front edge area, that the second absorbent member is located in said front edge area within the shell and from the main absorbent member is separated by a transverse area which has a lower density than the transverse areas of the diaper in which the main absorbent member and the second absorbent member are located _r which transverse and less dense area a que r forms a continuous and pleat-like area where the front edge area can be folded over so that the second absorbent member is located over the main absorbent member and increases its absorbency, while also creating a dam to prevent urine from escaping through the front end of the Diaper made difficult. 30 9 807/0307 19 "Disposable diaper according to claim 18, characterized in that that the main absorbent member and the second absorbent member consist of pads made of cellulosic fibers. 20. Disposable diaper according to claim 19, characterized in that that said two absorbent members of separate Cushions made of cellulose fibers are formed that the second absorbent cushion at a distance in front of the main cushion is located, whereby the transverse fold line area is formed between the two cushions. 21. Disposable diaper according to claim 19 or 20, characterized in that that said two absorbent pads are formed from a one-piece pad made of cellulose fibers and are separated from each other by a transverse compressed zone, the said transverse wrinkle-like district forms. 22. Disposable diaper according to one of claims 19 to 21, characterized in that a front elongate region of the main cushion ends at one end at the said front edge that a rear elongated area with one end at the said rear edge that ends between the front and the rear district elongated central district, and that that Feather weight in the front district is greater than the fiber weight in the other two districts. 23. Disposable diaper according to claim 22, characterized in that that the shell has a lower and an upper fabric layer, each of which consists of an elongated flat There is material whose side edges extend beyond the side edges of the main cushion and the second cushion and are attached to each other at these points. 3098 07/0307 24. Disposable diaper according to one of claims 18 to 23, characterized marked that a pattern is pressed into the upper fabric layer and into the cushion below it, which consists of a first and a second group of spaced apart elongate channels. 25. Disposable diaper for boys with an absorbent pad that is in one with a liquid-permeable Upper fabric layer provided cover is included, characterized in that the absorbent insert consists of a main absorbent member and an absorbent second member that is the longitudinal extension of the absorbent Main link between a front and a rear edge that the shell extends over the extends out front edge of the main absorbent member and forms a front edge region in which within the The envelope of the second absorbent member is located that the second absorbent member from the main absorbent member is separated by a transverse district, which has a lower density than the transverse districts the diaper in which said two absorbent members are located that the transverse area with the lower density forms a fold line area where the front edge part can be folded over so that the second absorbent member is located over the main absorbent member, increasing the absorbency in this district will be increased and a dam will be created * that will Difficulty leakage of urine at the front end of the diaper. 26ο disposable diaper according to claim 25, characterized in that that the absorbent main member and the absorbent second member consist of pads made of cellulosic fibers. 27ο disposable diaper according to claim 26, characterized in that that the two cushions mentioned are formed by separate cushions made of cellulose fibers, that the second cushion is located at a distance in front of the main cushion, with a transverse fold line area between said cushions is formed. '309807/0307 28. Disposable diaper according to claim 26 or 27 »characterized in that that said two cushions are formed by a one-piece cushion made of cellulose fibers and are separated from each other by a transverse compressed zone, the said transverse zone Forms fold line district. 29. Disposable diaper according to one of claims 26 to 28, characterized in that a front elongated District of the main pillow ends with one end at the said front edge, that a rear elongated District with one end at the said rear edge that ends between the said two districts elongated central district is located, and that the fiber weight in the front district is greater than the fiber weight in the other two districts. 30. Disposable diaper according to one of claims 25 to 29 » characterized in that said cover has a lower and an upper fabric layer, which two fabric layers consist of an elongated flat piece of material, the side edges of which extend over the edges of said extend out and on both absorbent members these points are attached to each other. 309807/0307 Blank page