DE2319541A1 - DISPOSABLE DIAPER - Google Patents

Description

8000 Munich 40,

Il OU Γ »U Eisenacher Strasse 17

Herne, DIP 1. - I Π vf. rt. H ₁ R β Π Γ Pat. Beizler Diploma Phys. Eduard Betzier ***** ■: «» «

T; ^ r ^ rsZl Dipl.-Ing. W. Herrmann-Trentepohl ^ ³⁰¹³

Telephone: 51013 for 9 r Telegram address:

⁵¹⁰¹⁴ PATENTANWÄLTE Babetzpat Munich

Telegram address: Telex 5215360

Bahr patents Herne »

Telex 08 229 853 1 Bank accounts:

Bayrische Vereinsbank Munich 952287

Γ * Dresdner Bank AG Herne 7-520

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Ref .: M 0 4079 Please state in the answer

Please send a letter to:

PAPER CONVERTING MACHINE COMPANY Green Bay, Wisconsin, U.S.A.

Disposable diaper

The invention "relates to a disposable diaper with a pad made of absorbent material.

A variety of disposable diapers are known and available Available to the public; however, none has so far proven successful in terms of transmission density: properties shown. The baby's body fluids or secretions can escape either along the sides or at the top.

These disadvantages are now intended to be overcome according to the invention.

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A construction according to the invention is intended to provide a better union that is superior to the previous versions be created between the cover and base sheets used in today's disposable diapers.

This is achieved in a disposable diaper with a pad made of absorbent material in that this is inside a (p.uch essentially rectangular) envelope made of liquid-impermeable Material is limited, one of the sheets of the shell having an apertured configuration is provided in the center thereof to allow passage of body fluid into the pad; and that a web of liquid-permeable material over the web which is provided with the apertured formation.

Preferably, the disposable diaper can consist of a plastic cover, i.e., an envelope made from materials that are substantially impermeable to liquids is. Inside the cover there is a cushion made of liquid-absorbing material. One of the ones forming the shell The track has openings, perforations or cutouts in the middle, so that the body fluids can access it to have upholstery. Over the apertured sheet and attached to the shell is a sheet of moisture permeable Material, for example a non-woven web, this being immediately adjacent to the child's skin is arranged.

An example embodiment of the invention will now be explained in more detail with reference to the accompanying drawing be in the

Figure 1 is a perspective view, partially broken away and partially in section, of a preferred embodiment is a diaper according to the invention;

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FIG. 2 is a partially perspective, partially sectioned illustration of the diaper as it is advantageously used for immediate use is folded; and

Figure 3 is a section through a modified embodiment of such a diaper.

In the illustration, in particular in FIG. 1, "denotes Numeral 10 generally represents a disposable diaper in an unfolded state. In some cases the diaper can be in this particular shape may be used, but usually the diaper construction of Figure 1 is longitudinally circumferential folded itself to achieve a wing folding formation according to Figure 2, in which it is provided on the baby. The ends the diaper will naturally unfold from the specific shape shown in FIG. Furthermore, a flat, i.e. unfolded, diaper in the form shown in Figure 3 can be used.

In Figure 1, reference numeral 11 denotes the absorbent core Material suitably used in disposable diapers; this usually consists of fluff or an insert or wadding or both and thus forms a reservoir for body fluid. As shown in Figure 3 it can be seen that the core 111 is C-shaped. folded; more accurate See U.S. Patent 3,667,468 for details.

The absorbent core or the absorbent pad 11 is delimited within a cover generally designated 12. The shell comprises a base or outer panel 13 of liquid impervious material and an inner panel 14, too made of liquid-impermeable material.

The construction material for the webs 13 and 14 is advantageously made of polyethylene. The tracks like the core 11 are substantially rectangular in plan and are near the longitudinal side edges of the core united by means of heat seals or welds 15.

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In order that the body fluid of the baby can get into the pad 11, the upper or inner panel 14 is provided with opening outlets 16 in its central part. According to the "particular illustration given, the opening formations 16 consist of elongated perforations or slits. Alternatively, differently dimensioned or shaped openings can be used or a central cutout or ^s 'window" can also be provided in the web 14. Advantageously, the size of the central area provided with the opening formations is of the order of about 50% to about 75% of the surface of the upper web 14 of the casing 12. For example, the AuSensbmessungen 12 lie on the shell 43 cm χ 34.3 (17 engl. Inch χ 13 1/2 engl.Zoll). In the case of a diaper of different dimensions, the.! Pool within the circumferential twist measures 15 40.5 2 31 _? 8 cm (16 inches by 12 1/2 inches) the central area occupied by the opening formations 16 is advantageously 33 cm by 25 cm (13 inches by 10 nominal).

At the top of the apertured panel 14 is a panel 1? of liquid-permeable material, for example arranged in a non-woven fabric. That is advantageous Panel 17 integrated with the cover 12 - by the same heat seal - how she unites Batmen 13 and 14. So became the part of the heat seal joining web 17 to web 14 denoted by the reference symbol 15a in the right central part of FIG. - ...... "

According to a preferred embodiment - the invention is Panel 13 made of white embossed polyethylene. If previously embossed plastic material or plastic material as When construction material was used for the base or outer sheet, difficulties arose in the union with the moisture-permeable or non-woven panels. The imprints mean disturbances with the effectiveness of a linear circumference weighed long. Through the realization the measure according to the invention this is avoided, however, since the non-woven spell 17 easily with the transparent

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or clear unembossed polyethylene film 14 is incorporated during heat sealing, and the integration between films 15 and 14 is also facilitated due to the union of the two similar plastic materials. It can thus be seen that a single heat sealing operation is carried out to integrate the edges of the foils 13 and 14 and the web 16.

By applying the measure according to the invention results An effective seal will be found not only on the sides of the diaper facing the baby's legs, but also on the hip, since here a chamber or a vessel for body fluids that is sealed against the edges is actually provided

In use, the diaper is in the shape shown in FIG provided where the envelope 12 is longitudinally folded about itself along parallel lines 18, 19 * 20 and 21. Material points as at 22 and 23 are provided to hold the diaper in this folding construction. When attached to the Baby, the folding construction is held in the gusset area however, the parts of the diaper opposite the baby's hips are unfolded on the front and back »this will by using glue dots as in 22 and 23 relieved.

FIG. 3 shows a modified embodiment of a diaper in which the lower film 113 and the upper film 114 are again made of polyethylene and form a shell, generally designated 112, which forms the core or the Pad 111 limited in G-fold. Again, the upper film 114 has an opening configuration analogous to that at 16 in FIG Figure 1 equipped; Over the cover 112 is a nonwoven fabric 117. Again, the two are Foils and the web integrated at the edge by means of a circumferential heat seal 115. In some cases, the union of the panel 17 or 117 with the cover 12 or 112 (if applicable)

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be left out at the end of the diaper; the diapers can also be used in conjunction with the substantially rectangular configuration be provided with different contours in plan view.

- patent claims -

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Claims (1)

M O 4079 Claims Disposable diaper, characterized by generally rectangular branches and wider pollen (13? H) from leakage in the water-impermeable material; the sur formation of a cover (12) along the circumference "united siadj duroh sin pad (11) made of absorbent material within the cover (IS) ₅ with one of the foils (14) old opening formations (16) in the middle of it is »such, & a, 3 the body fluids-Iiiardiircb. la äisses pad contact feöaneai unfl dureh a web (17) of flüssigkeitsft "jz ⁵ ohlässigem material which liter of this -aisen ^ olie (1-4) li ^f 2GT 'oad to the sheath (12) near La aear Händer άεΓ shell "attached iat. 2, diaper according to claim 1, characterized in that it has perforations in the middle to form it en (16) is provided. 3. Diaper according to claim 2, characterized in that these perforations extend over approximately 50 to atwE 75 f ^{s of} the surface of the cover (12) opposite this web (17). 4. Diaper according to claim 1, characterized in that the other (13) of these tracks is embossed and that these foils are circumferentially controlled by linear heat ■ rereiegelungen are united. 309848/0390 Blank page