WO1990004376A2 - Tampon absorbant multicouche - Google Patents
Tampon absorbant multicoucheInfo
- Publication number
- WO1990004376A2 WO1990004376A2 PCT/CH1989/000183 CH8900183W WO9004376A2 WO 1990004376 A2 WO1990004376 A2 WO 1990004376A2 CH 8900183 W CH8900183 W CH 8900183W WO 9004376 A2 WO9004376 A2 WO 9004376A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- absorbent
- layers
- layer
- chemical
- arrangement
- Prior art date
Links
- 230000002745 absorbent Effects 0.000 title claims abstract description 122
- 239000002250 absorbent Substances 0.000 title claims abstract description 122
- 239000000126 substance Substances 0.000 claims abstract description 22
- 229920001169 thermoplastic Polymers 0.000 claims abstract description 9
- 239000004416 thermosoftening plastic Substances 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 5
- 238000004519 manufacturing process Methods 0.000 claims description 17
- 238000010521 absorption reaction Methods 0.000 claims description 12
- 239000000835 fiber Substances 0.000 claims description 12
- 230000014759 maintenance of location Effects 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 230000001427 coherent Effects 0.000 claims description 2
- 229920003043 Cellulose fiber Polymers 0.000 claims 1
- 229920002678 cellulose Polymers 0.000 abstract description 4
- 239000001913 cellulose Substances 0.000 abstract description 4
- 206010021639 Incontinence Diseases 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000002657 fibrous material Substances 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 210000003491 Skin Anatomy 0.000 description 1
- 210000002700 Urine Anatomy 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000001058 adult Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 239000004599 antimicrobial Substances 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000000875 corresponding Effects 0.000 description 1
- 239000002781 deodorant agent Substances 0.000 description 1
- 230000001419 dependent Effects 0.000 description 1
- 235000013601 eggs Nutrition 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000011089 mechanical engineering Methods 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000000717 retained Effects 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 230000003442 weekly Effects 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Definitions
- the present invention relates to a process for the production of multi-layer absorbent pads made of cell pulp fibers, thermoplastic fibers and variable chemical absorbers, as well as by the method of manufacture.
- Suction pads are used as diapers for babies and adults, for incontinence pads, for monthly and weekly padding, for tampons, for medical and other applications.
- the absorbent pads are provided with a absorbent active chemical absorbent, in particular a so-called "superabsorber”. This absorbent is added to a fluff of cellulose and thermoplastic fibers, this fluff is laid between wipes or nonwovens and thermally bonded by means of hot blasting, contacting with a hot surface or with infrared radiation, which is also called thermobonding.
- absorbent pads with superabsorbers have a significantly higher absorbent capacity-and thus are considerably thinner than the usual cellulose absorbent pads-the problems of back-wetness remain due to a smooth liquid distribution within the diaper, i. that due to the body pressure, the diaper remains too dry on its surface.
- EP-A2 0210968 is a chemical absorbent for absorbent pads of diapers and the like. known, which is specifically distributed in einla ⁇ Gigen absorbent pad. In general, the concentration of the absorbent increases in the direction of the side facing away from the human body to the Saugkissehs. In the middle wetting zone, a range of higher concentration of absorbents extends to the surface of the human body facing surface Absorbent pad. These density gradients produce a corresponding absorption gradient in all directions, but without layer structure.
- US-A 4338371 discloses a multilayer absorbent pad for diapers and the like. Under a cover layer, which is intended for skin contact, is a first Faser ⁇ layer which extracts the liquid from the cover layer. Adjacent to this first fibrous layer are two absorptive layers with a high liquid absorption capacity arranged in doors or webs. The conclusion forms a fattyke tsun trimiana, but gas trimläs ⁇ s ge outside.
- US Pat. No. 4,590,114 describes a stabilized network of cellulosic fibers (thermo-mechanical pulp) and thermoplastic fibers which form suitable interspaces after the thermal bond to absorb moisture.
- the stabilization prevents one; Agglomeration and collapse of the network structure when moisture absorption.
- a two-layer composite layer is shown, which has a paper-like connected, thin cover layer. The layers are used for the production of diapers and the like.
- this object is achieved by forming a coherent or discontinuous, homogeneous fibrous layer to form the absorbent pads and by at least one chemical absorbent being added differently in sections, the substantially strip-shaped, separate absorbent layers in a preselected one Arrangement are placed on each other, and this arrangement of the absorbent layers with itself and / or with other layers mechanically and / or thermally connected.
- multi-layered absorbent pads can be produced in a simpler and more economic way, thanks to the added thermoplastic fibers, but nevertheless elastic absorbent layers, in a simpler and more economical manner.
- absorbent pads have the be ⁇ known advantage that the close-to-body moisture is drawn into the absorbent pad due to the different absorption properties of the absorbent layers used and so ⁇ ever with an almost dry surface of Saugkis , - sens causes, ie The diaper always gives a feeling of dryness when worn. This allows a diaper to be worn for about ten hours without any annoying return wetness.
- the chemical absorbent is advantageously added in sections during the formation of the fibrous layer in fine grains or as a powder. Depending on the dosage, this allows a complete saturation of the fiber layer with chemical absorbents or a greatly reduced, eg approximately half, coverage of the layer.
- the metering of the respective absorbent layer takes place according to the required absorption properties.
- an anti-septic agent and / or a deodorant can be added simultaneously.
- the separation by means of a water jet or a cutting blade is particularly advantageous in a longitudinal separation of the suction layers. This allows a particularly fast and easy-to-use production of diapers.
- a support layer arranged from a continuous cloth or nonwoven absorbent layers, which are arranged at a distance zueinan ⁇ , have proven particularly at a lower proportion of thermoplastic fibers, since in this case the produced absorbent layers are least stable and thus less can be transported well in the machine.
- Suction pads having a plurality of layers of a textile-containing material produced by the method are characterized in that the first absorbent layer has an absorption capacity of less than 30 ml / g, and at least one of the underlying absorbent layers has an absorption capacity of 30 ml / g or more.
- the absorption capacity of a suction layer is determined primarily by the content and the type of chemical absorption medium n.
- the absorbent pad has at least two layers, wherein the first absorbent layer contains at most 2% by weight, here and in other respects based on the fiber material, of a chemical absorbent having a retention of less than 10 ml / g, and at least one of underlying absorbent layers containing at least 2 wt .-% of a chemical Absorp ⁇ tion medium, with a retention more than 20 ml / g, in particular between 35 and 65 ml / g.
- Diapers and insoles for adult incontinent sufferers preferably have absorbent pads having at least four layers, the lower absorbent layers suitably containing alternately 2 to 10% and 10 to 20% by weight of chemical absorbent.
- FIG. 1 different absorbent layers immediately after production
- FIG. 2 separate absorbent layers
- FIG. 3 an arrangement of superimposed absorbent layers according to FIG. 1, FIG.
- Fig. 4 shows an arrangement of absorbent layers accordingly
- Fig. 3 with a folded support layer
- Fig. 5 shows an arrangement according to Fig. 4 with another Fal ⁇ device.
- FIG. 1 shows a section with the sequence of different absorbent layers 1 to 5, immediately after their production.
- the first absorbent layer contains about 1% by weight of a chemical absorbent which is added during formation of the absorbent layer of pulp and thermoplastic fibers.
- the pulp and thermoplastic fibers are preferably in a ratio of 30: 1 and 4: 1, in particular about 7: 1, intimately mixed and thermally bonded " .
- Chemical absorbents in particular a superabsorbent, are highly absorbent polymers which can bind a multiple of their face to saline-containing water or urine and thereby form a gel which remains stable even under pressure influence. This retention is a particularly important property for diapers, pads, sanitary napkins, tampons and the like.
- the wicking speed of a superabsorbent is mainly dependent on grain size, i. For smaller grains, the entire surface of the superabsorbent is larger and therefore absorption or gel bonding is much faster.
- the adjustment of the absorbency of a suction layer is achieved with superabsorbents of different types and / or quantities.
- FAVOR 922 SK from Stockhausen, D-Krefeld Fibersorb SA 7000 from Arco Chemical, U.S.A.
- the second absorbent layer 2 is partially, i. about 2 wt .-%, provided a slow superabsorber.
- the particle size distribution is such that at most 2% are greater than 800 ⁇ m and at most 3% smaller than 100 ⁇ .
- the third absorbent layer 3 is enriched with about 15% by weight of a slow superabsorber.
- the fourth absorbent layer 4 is provided with about 5 wt .-% of a fast superabsorber.
- the grain size distribution of the fast superabsorber is such that high at least 2% larger than 400 ⁇ m and at most 4% smaller than 100 ⁇ m.
- the fifth absorbent layer 5 is provided with about 15% by weight of a fast superabsorber.
- the uppermost or first absorbent layer 1 has an absorbency of less than 30 ml / g and a retention of less than 10 ml / g.
- the underlying suction layers 2 to 5 all have an absorption capacity of more than 30 ml / g and a retention of more than 20 ml / g, in particular after the first variant, the retention in the absorbent layers 3 and 5 are between 35 and 65 ml / g.
- FIG. 1 indicates that further sequences of absorbent layers follow continuously on both sides of the row of absorbent layers 1 to 5.
- the absorbent layers according to FIG. 1 can be arranged longitudinally or vertically with respect to the production direction, depending on the available forming station.
- FIG. 1 The continuous sequence of FIG. 1 produced Absorbent layers 1 to 5 are separated from one another with suitable separating means, for example with a cutting blade or by means of a jet of water, and laid one on top of another according to the arrangement in FIG.
- suitable separating means for example with a cutting blade or by means of a jet of water, and laid one on top of another according to the arrangement in FIG.
- a suction pad is formed with the first absorbent layer 1 close to the body when worn, the three intermediate absorbent layers 2, 3 and 4 underneath and the absorbent layer 5 at the bottom.
- the separation can also be done after the layers are stacked.
- the first absorbent layer 1 further has the essential function of preventing rewet of the underlying absorbent layers 2 to 5 when the absorbent pad is pressed, so that an approximately dry, near-bodily surface of the absorbent pad is always retained, ie. the absorbent layer 1 verli ht. always a dry feeling.
- Diapers or incontinence pads for adults are preferably made from a suction pad with the five suction layers 1 to 5.
- the absorbent layers 1 to 5 are produced at a distance on a moisture-permeable support layer 6, they can be laid on one another by folding the backing layer 6 according to FIG. 4. The individual absorbent layers 1 to 5 then no longer need to be separated from each other. In this arrangement, the first absorbent layer 1 is connected at the top to the base layer 6, the second absorbent layer 2 is attached to the bottom, etc.
- FIG. 5 shows another arrangement of the folded carrier layer 6.
- the Support layer 6 each two times between the adjacent absorbent layers.
- the thickness of the base layer 6 is of secondary importance in practice, so that only the interval production of the absorbent layers and the simplest folding method are decisive for the production speed.
- the absorbent layers 1 to 5 can, instead of as shown in relation to the longitudinal variant in Fig. 1, also in tracks side by side - are produced in the properties and / or in the amount of different absorbents. These webs are then placed one on top of the other as shown in FIG. 3 and subsequently separated to the desired diaper or egg ng sizes.
- the U The same is done by means of the "looping" method known per se, ie the respective track is directed obliquely around a roller, whereby it undergoes a parallel displacement. By suitable paral lel displacement of all tracks they come to lie one above the other.
- Another possibility of the parallelization is that the tracks are guided on curved surfaces which have the profile of an S-curve.
- the S-curves are designed in such a way that the tracks are finally all one above the other.
Abstract
Un tampon absorbant multicouche comporte des fibres cellulosiques, des fibres thermoplastiques et des absorbants chimiques variables. Dans le procédé de fabrication du tampon absorbant, une couche fibreuse homogène continue ou discontinue est formée et au moins un absorbant chimique est ajouté de manière différentielle aux diverses sections. Les couches absorbantes sensiblement en forme de bande (1-5 ou 1-3), qui sont disposées longitudinalement ou transversalement, sont superposées dans une configuration prédéterminée, puis soudées mécaniquement et/ou thermiquement entre elles et/ou aux autres. La première ou la plus haute couche absorbante (1) du tampon absorbant présente une absorptivité inférieure à 30 ml/g, et au moins une des couches absorbantes sous-jacente (2-5) présente une absorptivité égale ou supérieure à 30 ml/g.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH393988 | 1988-10-24 | ||
CH3939/88-7 | 1988-10-24 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO1990004376A2 true WO1990004376A2 (fr) | 1990-05-03 |
WO1990004376A1 WO1990004376A1 (fr) | 1990-05-03 |
Family
ID=4266738
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CH1989/000183 WO1990004376A1 (fr) | 1988-10-24 | 1989-10-17 | Tampon absorbant multicouche |
Country Status (2)
Country | Link |
---|---|
AU (1) | AU4407489A (fr) |
WO (1) | WO1990004376A1 (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3489140B2 (ja) * | 1993-07-08 | 2004-01-19 | チッソ株式会社 | 吸収性物品 |
GB2301666B (en) * | 1994-01-22 | 1998-03-11 | Bio Diagnostics Ltd | Diagnostic device |
GB9401219D0 (en) * | 1994-01-22 | 1994-03-16 | Bio Diagnostics Ltd | Diagnostic device |
MX9605217A (es) * | 1994-04-29 | 1997-12-31 | Johnson & Johnson | Productos absorbentes estratificados. |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4338371A (en) * | 1980-12-24 | 1982-07-06 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Absorbent product to absorb fluids |
US4463639A (en) * | 1982-06-22 | 1984-08-07 | Gerber Garment Technology, Inc. | Fluid jet receiver positioner |
US4590114A (en) * | 1984-04-18 | 1986-05-20 | Personal Products Company | Stabilized absorbent structure containing thermoplastic fibers |
PH23956A (en) * | 1985-05-15 | 1990-01-23 | Procter & Gamble | Absorbent articles with dual layered cores |
JPH0620476B2 (ja) * | 1985-07-31 | 1994-03-23 | メ−ルンリユ−ケ・ア−ベ− | おむつ、衛生ナプキンまたは傷包帯の如き使い捨て物品用吸収材料 |
US4699823A (en) * | 1985-08-21 | 1987-10-13 | Kimberly-Clark Corporation | Non-layered absorbent insert having Z-directional superabsorbent concentration gradient |
-
1989
- 1989-10-17 WO PCT/CH1989/000183 patent/WO1990004376A1/fr unknown
- 1989-10-17 AU AU44074/89A patent/AU4407489A/en not_active Abandoned
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US5374260A (en) | Unitized sanitary napkin | |
US6245961B1 (en) | Absorbent article | |
US6849319B2 (en) | Apertured nonwoven composites and method for making | |
US5968855A (en) | Nonwoven fabrics having liquid transport properties and processes for manufacturing the same | |
JP5404835B2 (ja) | 一体化された流体取得、貯蔵、及び分配材料 | |
KR100630508B1 (ko) | 일회용 흡수제품, 이의 커버소재 및 커버소재의 제조방법 | |
EP0359501B1 (fr) | Serviette hygiénique intégrée | |
AU695951B2 (en) | Article with soft absorbent pulp sheet | |
US5879344A (en) | Composite nonwoven material and its application to any absorbent article of hygiene | |
EP1787663A1 (fr) | Couche d'acquisition de liquide destinée à des articles absorbants | |
EP1035820A1 (fr) | Article absorbant | |
CZ282872B6 (cs) | Absorpční těleso a způsob výroby absorpčního tělesa určeného pro absorpční výrobek | |
EP1274383B1 (fr) | Couche de matiere fibreuse, son procede de production, et article absorbant comportant cette couche | |
US6765125B2 (en) | Distribution—Retention material for personal care products | |
AU674961B2 (en) | Composite non-woven material, method of manufacture and application to absorbent sanitary articles | |
JPH08511309A (ja) | 複合不織材料、その材料の製造工程及び吸収性衛生物品への適用 | |
CN111108240A (zh) | 用于吸收制品的层 | |
WO2000028929A1 (fr) | Article absorbant pourvu d'une garniture perforée | |
WO1990004376A2 (fr) | Tampon absorbant multicouche | |
CN215503799U (zh) | 三维基底和包括三维基底的吸收制品 | |
JP3222494B2 (ja) | 吸収性物品 | |
WO1990004376A1 (fr) | Tampon absorbant multicouche |