NO122495B - - Google Patents

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Publication number
NO122495B
NO122495B NO0215/69A NO21569A NO122495B NO 122495 B NO122495 B NO 122495B NO 0215/69 A NO0215/69 A NO 0215/69A NO 21569 A NO21569 A NO 21569A NO 122495 B NO122495 B NO 122495B
Authority
NO
Norway
Prior art keywords
pad
channels
fibers
product
moisture
Prior art date
Application number
NO0215/69A
Other languages
Norwegian (no)
Inventor
J Constanza
B Eisen
Original Assignee
Celanese Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Celanese Corp filed Critical Celanese Corp
Publication of NO122495B publication Critical patent/NO122495B/no

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F13/531Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having a homogeneous composition through the thickness of the pad
    • A61F13/532Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having a homogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad
    • A61F13/533Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having a homogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad having discontinuous areas of compression
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/15203Properties of the article, e.g. stiffness or absorbency
    • A61F13/15211Properties of the article, e.g. stiffness or absorbency soluble or disintegratable in liquid
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/15577Apparatus or processes for manufacturing
    • A61F13/15707Mechanical treatment, e.g. notching, twisting, compressing, shaping
    • A61F13/15731Treating webs, e.g. for giving them a fibrelike appearance, e.g. by embossing
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F13/511Topsheet, i.e. the permeable cover or layer facing the skin
    • A61F13/51104Topsheet, i.e. the permeable cover or layer facing the skin the top sheet having a three-dimensional cross-section, e.g. corrugations, embossments, recesses or projections
    • A61F13/51108Topsheet, i.e. the permeable cover or layer facing the skin the top sheet having a three-dimensional cross-section, e.g. corrugations, embossments, recesses or projections the top sheet having corrugations or embossments having one axis relatively longer than the other axis, e.g. forming channels or grooves in a longitudinal direction
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F13/511Topsheet, i.e. the permeable cover or layer facing the skin
    • A61F13/51121Topsheet, i.e. the permeable cover or layer facing the skin characterised by the material
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F13/539Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium characterised by the connection of the absorbent layers with each other or with the outer layers
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/15203Properties of the article, e.g. stiffness or absorbency
    • A61F13/15211Properties of the article, e.g. stiffness or absorbency soluble or disintegratable in liquid
    • A61F2013/15227Properties of the article, e.g. stiffness or absorbency soluble or disintegratable in liquid by its solubility in particular Ph solution
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/15577Apparatus or processes for manufacturing
    • A61F2013/15821Apparatus or processes for manufacturing characterized by the apparatus for manufacturing
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F2013/51078Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers being embossed
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F13/539Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium characterised by the connection of the absorbent layers with each other or with the outer layers
    • A61F2013/53908Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium characterised by the connection of the absorbent layers with each other or with the outer layers with adhesive

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Epidemiology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Laminated Bodies (AREA)
  • Absorbent Articles And Supports Therefor (AREA)

Description

Selektivt dispergerbare sanitærprodukter. Selectively dispersible sanitary products.

Der er et stort, potensielt marked for slike sanitærprodukter som damebind og bleier, som det efter bruk er enklere å kvitte sig med enn vanlige produkter. Behandling av et tilsmusset sanitærprodukt som vanlig avfall medforer selvsagt ubehageligheter i forbindelse med håndteringen og lagringen av dette. There is a large, potential market for such sanitary products as sanitary napkins and nappies, which are easier to dispose of after use than ordinary products. Treatment of a soiled sanitary product as ordinary waste naturally entails unpleasantness in connection with its handling and storage.

Der er av flere blitt foreslått å fremstille bleier ©g lignende produkter som efter bruk skal kunne kastes i en septiktank eller et klosett. Selv om dette ville lose problemet, forutsetter denne lds-ning at sanitærproduktet lett nedbrytes eller dispergeres i klosettet for at tilstopning av roraysternet skal kunne unngåes. Dispergerbarhet i vann er i alminnelighet blitt basert på en strukturnedbrytning ved at den mellom fibrene forekommende friksjon gjores svakere. It has been suggested by several people to produce nappies and similar products which, after use, should be able to be thrown into a septic tank or a toilet. Although this would solve the problem, this solution requires that the sanitary product is easily broken down or dispersed in the toilet so that clogging of the toilet seat can be avoided. Dispersibility in water has generally been based on a structural breakdown by making the friction occurring between the fibers weaker.

Disse foreslåtte dispergerbare sanitærprodukter har med-fbrt en eller flere alvorlige ulemper. Enkelte av disse må rives istykker eller opptrevles for de kastes, og dette medforer en ubehagelig håndtering. Andre brytes ikke lett og hurtig opp i klosettet. Atter andre er ikke tilstrekkelig absorberende eller har en lav absorpsjon9haatighet eller for lav styrke til å holde sig ander bruk. Enkelte av de andre foreslåtte produkter er ikke tilstrekkelig foyelige og er ubehagelige å berore. These proposed dispersible sanitary products have one or more serious disadvantages. Some of these have to be torn to pieces or unraveled before they are thrown away, and this leads to unpleasant handling. Others do not break up easily and quickly in the toilet. Still others are not sufficiently absorbent or have a low absorption rate or too low strength to withstand other uses. Some of the other proposed products are not sufficiently malleable and are unpleasant to the touch.

Der taes ved oppfinnelsen sikte på å tilveiebringe sanitærprodukter som hurtig kan absorbere legemsutsondringer og som er så billige at de kan kastes efter å ha vært brukt én gang. Produktene bBr dessuten ha en tilstrekkelig totr- og våtstyrke til at de vil beholde sin strukturmessige helhet under håndtering og bruk og bor kunne heftes fast eller festes. De bor dessuten være foyelige, sterkt absorberende og ikke ubehagelige å berore. Det skal dessuten være lett, enkelt og sikkert å kaste produktene i en klosettskål eller septiktank uten at det er nodvendig å rive dem istykker. The invention aims to provide sanitary products which can quickly absorb body secretions and which are so cheap that they can be thrown away after being used once. The products must also have sufficient dry and wet strength so that they will retain their structural integrity during handling and use and can be attached or fixed. They should also be docile, highly absorbent and not unpleasant to the touch. It must also be easy, simple and safe to throw the products into a toilet bowl or septic tank without the need to tear them to pieces.

Oppfinnelsen angår et laminert produkt som kan spyles bort i et klosett og som er istand til å absorbere legemsutsondringer, omfattende en pute av celluloseholdige fibre, f.eks. av vilkårlig orienterte tremassefibre, et fuktighetsgjennomtrengelig lag omfattende parallelle stapelfibre festet til og dekkende en side av puten, en for legemsutsondringer ugjennomtrengelig film festet til og dekkende den annen side av puten, og et innpreget nettverk av bindemiddel over det fuktighetsgjennomtrengelige lags overflate, og produktet er særpreget ved at en rekke kanaler (18) er anordnet med mellomrom over det fuk-ttighetsgjennomtrengelige lags (1) overflate slik at i det vesentlige alle parallelle stapelfibre krysses av minst én av kanalene som stikker ned i puten (2) av celluloseholdige fibre og som inneholder bin-demidlet i form av en termopla9tharpika (9) som er uoppløselig i vann innen legemsutsondringens pH-område og oppløselig i vann ved valgte pH-verdier utenfor dette område og har i det vesentlige de samme opploselighetsegenskaper som den for legeasutsondringer ugjennomtrengeli-ge fila (15) innen de angitte pH-områder. The invention relates to a laminated product which can be flushed away in a toilet and which is capable of absorbing bodily secretions, comprising a pad of cellulose-containing fibres, e.g. of randomly oriented pulp fibers, a moisture permeable layer comprising parallel staple fibers attached to and covering one side of the pad, a body excrement impermeable film attached to and covering the other side of the pad, and an imprinted network of binder over the surface of the moisture permeable layer, and the product is characterized by the fact that a number of channels (18) are arranged at intervals over the surface of the moisture-permeable layer (1) so that essentially all parallel staple fibers are crossed by at least one of the channels that protrude into the pad (2) of cellulose-containing fibers and which contains the binder in the form of a thermoplastic (9) which is insoluble in water within the pH range of body secretions and soluble in water at selected pH values outside this range and has essentially the same solubility properties as the film impermeable to medical secretions (15) within the indicated pH ranges.

Produktene ifdlge oppfinnelsen kan anvendes som damebind, bleier, bandasjer, armputer og lignende sanitarprodukter. De har en tilstrekkelig våt- og torrstyrke til at de kan heftes fast eller festes og er foyelige, myke og virker ikke irriterende. De kan lett absorbere legemsutsondringer uten at deres strukturmessige enhet 6de-legges. Det er efter bruk lett å bli kvitt produktene ved å kaste dem i et vanlig klosett efter behandling med enten syre eller alkali avhengig av den anvendte harpikstype. The products according to the invention can be used as sanitary napkins, nappies, bandages, arm cushions and similar sanitary products. They have sufficient wet and dry strength so that they can be attached or fixed and are malleable, soft and non-irritating. They can easily absorb bodily secretions without their structural unity being compromised. After use, it is easy to get rid of the products by throwing them in a regular toilet after treatment with either acid or alkali, depending on the type of resin used.

Fibertypen i det uvevede fuktighetsgjennomtrengelige lag The fiber type in the non-woven moisture permeable layer

er ikke av kritisk betydning. Den gjennomsnittlige fiberlengde bor være 1,27 - 7,62 cm, fortrinnsvis 2,54 - 5,08 cm. Det blir for van-skelig med mellomrom å binde praktisk talt alle fibre dersom der anvendes fibre med kortere lengder. Dersom den gjennomsnittlige fiberlengde er for stor, vil trådene være tilboyelige til å vikle sig sammen, og dette vil bevirke at det selv i en nøytraliserende opplosning vil fåes en betydelig strukturmessig styrke. Av egnede fibermateria-ler kan nevnes celluloseholdige fibre som rayon, bomull, cellulose-acetat og blandinger derav. is not of critical importance. The average fiber length should be 1.27 - 7.62 cm, preferably 2.54 - 5.08 cm. It becomes too difficult with spaces to bind practically all fibers if fibers with shorter lengths are used. If the average fiber length is too large, the threads will be prone to tangle, and this will mean that even in a neutralizing solution, considerable structural strength will be obtained. Suitable fiber materials include cellulose-containing fibers such as rayon, cotton, cellulose acetate and mixtures thereof.

Dette uvevede lag kan fremstilles fra et flor av i det vesentlige parallelle stapelfibre. Egnede flor bestående av i det vesentlige parallelle stapelfibre kan fremstilles ved å anvende en hvilken som helst av en rekke fremgangsmåter som er velkjente for fagmannen, f.eks. ved karding og strekking. Det foretrekkes å anvende sterkt orienterte flor. Ifolge en utforelse.sform av oppfinnelsen be-handles disse for pregningen med en liten mengde av en valgt harpiks for å beholde fiberorienteringen under fremstillingen. Harpiksen bor være opploselig enten i noytralt vann eller under de pH-betingelser som er nodvendige for at den i kanalene anvendte harpiks skal kunne oppldses. This non-woven layer can be made from a pile of substantially parallel staple fibres. Suitable webs consisting of substantially parallel staple fibers can be prepared using any of a number of methods well known to those skilled in the art, e.g. by carding and stretching. It is preferred to use strongly oriented flor. According to one embodiment of the invention, these are treated for embossing with a small amount of a selected resin in order to retain the fiber orientation during manufacture. The resin must be soluble either in neutral water or under the pH conditions necessary for the resin used in the canals to dissolve.

Den i puten anvendte cellulosefibertype er ikke. kritisk. Tremasse med et forholdsvis lavt innhold av alfacellulose og bomulls-kluter er.eksempler på rimelige råmaterialer for slike cellulosefibre. Puter av disse fibre kan fremstilles på en hvilken som helst egnet må-te, f.eks. ved karding, garnetering eller ved tdrraysetning av fibrene fra en luftsuspensjon av disse. Fibrene i puten kan være orienterte eller ikke-orienterte. Egnede ikke-orienterte puter kan på enkel måte fremstilles ved f.eks. å anvende en Rando-Webber maskin. Slike puter har samme styrke i alle retninger uten at det er nodvendig å utfore en krys9laminering. Fremstillingen av slike puter er velkjent for fagmannen og utgjdr ingen del ay oppfinnelsen. Putens onskede tykkel-se er bare avhengig av sluttanvéndelsen, dvs. at den må ha den nodvendige absorpsjonsevne. The cellulose fiber type used in the pillow is not. critical. Wood pulp with a relatively low content of alpha cellulose and cotton cloths are examples of inexpensive raw materials for such cellulose fibres. Pads of these fibers can be produced in any suitable way, e.g. by carding, garneting or by drying the fibers from an air suspension of these. The fibers in the pad can be oriented or non-oriented. Suitable non-oriented pads can be easily produced by e.g. to use a Rando-Webber machine. Such cushions have the same strength in all directions without the need to carry out cross-lamination. The manufacture of such cushions is well known to those skilled in the art and forms no part of the invention. The desired thickness of the pad only depends on the end use, i.e. that it must have the necessary absorption capacity.

Produktene ifolge oppfinnelsen kan fremstilles ved å fore laget av parallelle stapelfibre sammen med et underlag av cellulose-puten gjennom kame- eller dyptrykksvalser fuktet med klebemiddelopplosningen, og så torkes. Uttrykket "klebemiddelopplosning" som an-vendt heri er ment å omfatte en emulsjon. Kamé- og dyptrykk er velkjent for fagmannen og omfatter foring av puten gjennom spalten mellom en pressvalse og en trykkvalse med utstikkende eller fordypede bindemiddelpåforingsdeler anordnet i overensstemmelse med det onskede monster. Dersom der anvendes kamétrykking for fremstilling av produktene ifolge oppfinnelsen, bor de utstikkende kanter være forsynt med fordypninger for derved å sammenklemme eller lokalisert å sammentryk-ke puten for å nedsette bindemidlets tilbøyelighet til å spre sig ut-over eller diffundere forbi de sammenklemte eller lokalisert sammen-trykte deler av puten. Trykkvalsene kan fuktes av klebemiddelopplosningen på en hvilken som helst vanlig måte, som f.eks. ved å anvende en påforingsvalse eller en svaber. Der foretrekkes å anvende en klebemiddelopplosning som er blitt tilstrekkelig fortynnet med et hvil-ket som helst av en rekke egnede, flyktige, organiske opplosningsmid-ler, som methylethylketon, til at viskositeten nedsettes og inntreng-ningen av klebemidlet derved okes. Efter pregingen fordampes endel av opplosningsmidlet, f.eks. i en ovn, for at klebemiddelopplosriingen skal bli klebrig. Produktet kan så sammenpresses. Den pregede del vil forekomme som en fordypning under overflaten av de upregede deler. Ved å sammenpresse puten langs de trykte linjer blir den også ytterli-gere forsterket. The products according to the invention can be produced by lining the layer of parallel staple fibers together with a substrate of the cellulose pad through cam or gravure rollers moistened with the adhesive solution, and then dried. The term "adhesive solution" as used herein is intended to include an emulsion. Camo and gravure printing are well known to those skilled in the art and involve feeding the pad through the gap between a press roller and a pressure roller with protruding or recessed binder application portions arranged in accordance with the desired pattern. If cam printing is used for the production of the products according to the invention, the projecting edges should be provided with indentations to thereby compress or locally compress the pad in order to reduce the tendency of the binder to spread outwards or diffuse past the compressed or localized together -printed parts of the pillow. The pressure rollers may be moistened with the adhesive solution in any conventional manner, such as e.g. by using an application roller or a mop. It is preferred to use an adhesive solution which has been sufficiently diluted with any of a number of suitable, volatile, organic solvents, such as methyl ethyl ketone, so that the viscosity is reduced and the penetration of the adhesive thereby increased. After embossing, part of the solvent evaporates, e.g. in an oven, so that the adhesive solution becomes sticky. The product can then be compressed. The embossed part will appear as a depression below the surface of the unembossed parts. By compressing the pad along the printed lines, it is also further reinforced.

Ifolge en enkel utforelsesform kan kanalene være parallelle med hverandre og loddrette i forhold til retningen til de parallelt ordnede fibre for at det skal fåes en forbedret styrke i sideretningen. Der kan også anvendes et kryssmonster for å oppnå en forsterkning i begge retninger. Klebemiddelkanalene bor selvfolgelig ha en så jevn avstand at de vil krysse hver fiber. Med andre ord bor avstanden mellom klebemiddelmonstrets kanaler være mindre enn den gjennomsnittlige lengde til fibrene i iage^t. Det optimale, samlede overflateareal som klebemiddelmonstret bor dekke, kan fastslåes ved et enkelt forsok og vil være en funksjon av den anvendte fibertype og produktets sluttan-vendelse. Dersom det område som klebemidlet dekker, er for hoyt, vil fuktighetsgjennomtrengeligheten reduseres betraktelig. På den annen side vil, dersom det område som klebemidlet dekker er for lavt, produktene ikke ha den nodvendige torr- og/eller våtstyrke. According to a simple embodiment, the channels can be parallel to each other and perpendicular to the direction of the parallel fibers in order to obtain an improved strength in the lateral direction. A cross monster can also be used to achieve a reinforcement in both directions. The adhesive channels should obviously have such an even distance that they will cross each fiber. In other words, the distance between the channels of the adhesive monster must be less than the average length of the fibers in the iage^t. The optimal overall surface area that the adhesive monster should cover can be determined by a simple trial and will be a function of the type of fiber used and the end use of the product. If the area covered by the adhesive is too high, the moisture permeability will be reduced considerably. On the other hand, if the area covered by the adhesive is too low, the products will not have the necessary dry and/or wet strength.

Underlagsfilmen må være ugjennomtrengelig overfor de legemsutsondringer som produktet skal absorbere. Filmen har selektive opploselighetsegenskaper lignende klebemiddelharpiksen, dvs. at den er vannuopplbselig innen pH-området for de legemsutsondringer som den vil komme i kontakt med, og vannopploselig ved i det minste enkelte pH-verdier utenfor dette område. For dette formål kan filmen stopes av det samme harpiksmateriale som anvendes som bindemiddel for det fuktighetsgjennomtrengelige lag. Underlagsfilmen kan også klebes til puten ved å anvende samme harpiks som i overtrekkslaget. The base film must be impermeable to the bodily secretions that the product is to absorb. The film has selective solubility properties similar to the adhesive resin, i.e. it is water insoluble within the pH range of the body secretions with which it will come into contact, and water soluble at at least some pH values outside this range. For this purpose, the film can be stopped by the same resin material that is used as a binder for the moisture-permeable layer. The base film can also be glued to the cushion by using the same resin as in the cover layer.

Underlagsfilmen kan lamineres med resten av produktet ved å anvende en rekke metoder som vil være selvklare for fagmannen. Det kan på en enkel måte utfores ved å fore det indre lag, dvs. puten, eller filmen gjennom gripevalser fuktet med bindemiddelharpiksen, for så å sammenpresse de to lag. De samme klebemiddelkanaler som anvendes for å binde overtrekkslaget og det indre lag, kan i enkelte til-felle* også anvendes for å holde filmen festet til det indre lag. For dette formål bor klebemidlet være preget meget dypt. Pregedybden kan reguleres ved hjelp av valsekonstruksjonen, klebemiddelopplosningens viskositet, trykket og det uvevede materiales oppbygning. ;Det med kanaler forsynte klebemiddelmonster til produktene ifolge oppfinnelsen tjener en rekke viktige formål i tillegg til at det styrker overtrekkslaget. For det forste fester det cellulosepu-ten til det uvevede overtrekk og hindrer således cellulosefibrene i puten fra å oppbrytes og skifte stilling ved håndtering og bruk av produktet. Ved en slik skifting av stilling vil der dannes klumper i ett område og forholdsvis tomme områder med nedsatt absorpsjonsevne. For det annet vil monstret tilveiebringe kanaler som forer væskeut-sondring bort fra dens avsetningsområde. Dette oker både produktets samlede, effektive absorpsjonsevne og absorpsjonshastigheten og hindrer enhver tilboyelighet til dannelse av dammer eller lekasje fra bleiens kanter. For det tredje vil monstret gjore at en berøring av produktet ikke vil være ubehagelig, da klebemiddelmonstret ligger under overtrekkets overflate. For det fjerde kan klebemidlet hurtig noytraliseres og derved oppløses fordi den nøytraliserende oppløsning straks vil komme i kontakt med klebemidlet uten å måtte trenge gjennom noe overtrekksmateriale. Kanalene vil dessuten oke produktets foyelighet og gi dette en tiltalende utformning. ;Foretrukne utfbrelsesformer av oppfinnelsen er mer detaljert beskrevet i forbindelse med tegningene. Av disse viser fig* 1 et skjematisk snitt av et apparat for fremstilling av en The base film can be laminated with the rest of the product by using a number of methods which will be self-evident to the person skilled in the art. It can be carried out in a simple way by feeding the inner layer, i.e. the pad, or the film through gripping rollers moistened with the binder resin, and then pressing the two layers together. The same adhesive channels that are used to bind the cover layer and the inner layer can in some cases* also be used to keep the film attached to the inner layer. For this purpose, the adhesive must be embossed very deeply. The embossing depth can be regulated by means of the roller construction, the viscosity of the adhesive solution, the pressure and the structure of the non-woven material. The ducted adhesive sample for the products according to the invention serves a number of important purposes in addition to strengthening the cover layer. Firstly, it attaches the cellulose pad to the non-woven cover and thus prevents the cellulose fibers in the pad from breaking up and changing position when handling and using the product. With such a change of position, clumps will form in one area and relatively empty areas with reduced absorption capacity. Second, the monster will provide channels that conduct fluid secretion away from its area of deposition. This increases both the product's overall effective absorption capacity and the absorption rate and prevents any tendency to form ponds or leakage from the nappy's edges. Thirdly, the monster will ensure that a touch of the product will not be unpleasant, as the adhesive monster lies below the cover's surface. Fourthly, the adhesive can be quickly neutralized and thereby dissolved because the neutralizing solution will immediately come into contact with the adhesive without having to penetrate any coating material. The channels will also increase the flexibility of the product and give it an appealing design. Preferred embodiments of the invention are described in more detail in connection with the drawings. Of these, fig* 1 shows a schematic section of an apparatus for producing a

foretrukken utfbrelsesform av produktet, preferred embodiment of the product,

fig. 2 en fragmentarisk perspektivskisse av den på fig. 1 viste fig. 2 a fragmentary perspective sketch of the one in fig. 1 showed

kametrykkvalse, cam pressure roller,

fig. 3 en fragmentarisk skisse av produktet sett ovenfra, og fig. 4 et fragmentarisk tverrsnitt langs linjen 4 - 4 på fig. 3. fig. 3 a fragmentary sketch of the product seen from above, and fig. 4 a fragmentary cross-section along the line 4 - 4 in fig. 3.

Ved den på fig. 1 som eksempel viste fremgangsmåte forbindes et Ovre lag av på linje anordnede stapelfibre 1 med et nedre lag av et celluloseflor 2 som fbres rundt styrevalsen 3 inn i spalten mellom valsene 4 og 6. Valsen 4 er en kamétrykkvalse At the one in fig. 1 as an example of the method shown, an upper layer of aligned staple fibers 1 is connected to a lower layer of a cellulose fleece 2 which is woven around the guide roller 3 into the gap between the rollers 4 and 6. The roller 4 is a cam printing roller

. med utstikkende deler 5 anordnet i et monster med jevn avstand . with projecting parts 5 arranged in a monster at regular intervals

fra hverandre. Ftir disse utstikkende deler griper lagene i spalten, vil de gripe inn i tilfbrselsvalsens 7 gummibelegg 8 som fra en van-. lig anordning, f.eks. bassenget 21, tilftires trykkmateriale i form av en oppløsning 9 av den selektivt oppltiselige harpiks. Når de utstikkende deler 5 ikke lenger er i inngrep med gummibelegget 8, vil de derfor være blitt-påftirt klebemiddeloppltisningen 9. Hfter-hvert som de roterende» utstikkende deler sammenpresser lagene 1 og 2 mot sttittevalsen 6, avsettes klebemiddelopplosningen på laget 1 og trenger med en viss dybde inn i laget 2. Oe trykkede lag 1 og 2 ftires så av et transportbelte eller av en annen egnet anordning gjennom en oppvarmningssone, f.eks. en ovn IO, for at endel av opplbsningsmidlet skal fjernes fra klebemiddeloppltisningen og derved gjtire denne klebrig. Efter å ha kommet ut fra oppvarmnings-sonen fbres de trykte lag gjennom spalten mellom valsene 11 og 12 som sammenpresser lagene. Samtidig lamineres et filmlag som kom-mer fra tilftirselsvalsen 13 og rundt styrevalsen 14 og pressvalsen 12, til lagets 2 underside. Laget 15 besprtiytes med en fin tåke av klebemiddeloppltisning 19 ved å anvende en vanlig anordning 17 på et sted mellom valsene 14 og 12. Produktet 16 får efter ttir-king de tinskede, permanente kanaler. apart. Before these protruding parts grip the layers in the gap, they will grip the rubber coating 8 of the supply roller 7 as from a van-. similar device, e.g. In the pool 21, pressure material is added in the form of a solution 9 of the selectively soluble resin. When the projecting parts 5 are no longer in engagement with the rubber coating 8, they will therefore have been coated with the adhesive solution 9. As the rotating projecting parts compress the layers 1 and 2 against the stand-up roller 6, the adhesive solution is deposited on the layer 1 and needs a certain depth into layer 2. Oe pressed layers 1 and 2 are then fed by a conveyor belt or by another suitable device through a heating zone, e.g. an oven IO, so that part of the solvent is removed from the adhesive solution and thereby renders it sticky. After emerging from the heating zone, the printed layers are fed through the gap between the rollers 11 and 12 which compress the layers. At the same time, a film layer coming from the supply roller 13 and around the guide roller 14 and the pressure roller 12 is laminated to the underside of the layer 2. The layer 15 is sprayed with a fine mist of adhesive solution 19 by using a conventional device 17 at a place between the rollers 14 and 12. After drying, the product 16 receives the thinned, permanent channels.

Trykkvalsens 4 overflate er tydeligere vist på fig. 2. Valsen med kanter 5 i form av et diamantmtinster utgjor en utfbrelsesform av en anvendbar påfbjr^ngsanordning. Som nevnt er disse kanter forsynt med fordypninger 20 for så langt som mulig å nedsette en spredning av klebemidlet i sideretning. Sluttproduktet 16 har en med kanaler forsynt overflate, som vist på fig. 3. Dette mtin-ster tilsvarer mtinstret på fig. 2. Kanalene 18 er tydeligere vist i tverrsnitt på fig. 4. Kanalene trenger godt inn i cellulosefloret 2. Klebemidlet 9 tjener ikke bare til å binde fibrene i laget 1, men også til å feste laget 1 til cellulosefloret. Når væske utsondres på et sted på lagets 1 overflate, kan den hurtig fores bort langs kanalene 18 til torre områder av floret 2, hvorved få-es en mer fullstendig utnyttelse av florets 2 absorpsjonsevne samtidig som en damdannelse ved utsondringsområdet forhindres. The surface of the pressure roller 4 is more clearly shown in fig. 2. The roller with edges 5 in the shape of a diamond minster constitutes an embodiment of a usable application device. As mentioned, these edges are provided with recesses 20 to reduce as far as possible a spread of the adhesive in the lateral direction. The final product 16 has a surface provided with channels, as shown in fig. 3. This mtinster corresponds to the mtinster in fig. 2. The channels 18 are more clearly shown in cross section in fig. 4. The channels penetrate well into the cellulose fiber 2. The adhesive 9 not only serves to bind the fibers in the layer 1, but also to attach the layer 1 to the cellulose fiber. When liquid is secreted at a place on the surface of the layer 1, it can quickly be carried away along the channels 18 to dry areas of the fleece 2, whereby a more complete utilization of the absorbent capacity of the fleece 2 is obtained while at the same time a pond formation at the secretion area is prevented.

Det vil dessuten fremgå av fig. 4 at kanalene 18 også oker florets effektive overflateareal for absorpsjon av væske. It will also appear from fig. 4 that the channels 18 also increase the effective surface area of the floor for the absorption of liquid.

Den selektivt opplo6elige harpiks som anvendes for å binde det uvevede flor, kan være selektivt syre- eller alkaliopp-loselig, idet valget selvfølgelig er avhengig av produktets slutt-anvendelse. Et produkt ifolge oppfinnelsen som f.eks. skal anvendes som en bleie, bor helst inneholde en alkaliopplbselig harpiks og ikke en syreopploselig harpiks på grunn av urinens surnet (pH The selectively soluble resin used to bind the non-woven fleece can be selectively acid or alkali soluble, the choice of course depending on the end use of the product. A product according to the invention which e.g. is to be used as a diaper, should preferably contain an alkali-soluble resin and not an acid-soluble resin due to the acidic nature of urine (pH

i biologiske materialer fra mennesker er generelt 4,6 - 8,4 med en pH i blod av ca. 7,3 - 7,5). in biological materials from humans is generally 4.6 - 8.4 with a pH in blood of approx. 7.3 - 7.5).

Harpiksen bor ikke kunne tverrbindes irreversibelt under fremstillings-, lagrings- eller bruksbetingelsene. The resin must not be irreversibly crosslinked under the conditions of manufacture, storage or use.

Der er kjent en rekke polymer systemer som er uopplø-selige i nøytrale eller sure media, men som er oppløselige i alkaliske media. Copolymere av acryl- eller methacrylsyre og et alkyl-methacrylat, som methylmethacrylat, er f.eks. anvendbare, som f.eks. en'copolymer av 80 % ethylacrylat og 20 % methacrylsyre. Som andre eksempler på anvendbare polymere kan nevnes carboxyl-esterlactoner, styren-monoethylmaleatheteropolymere, poly-N,N'-diethylacrylamid og lignende. Der er også kjent polymersystemer som er uoppløselige i noytrale eller alkaliske media, men som er opploselige i sure media. Som eksempler på disse polymersystemer kan nevnes copolymere av aminoacrylater, som dimethylaminometh-acrylat, og et alkylacrylat, som ethylacrylat. Det er selvfølgelig mulig for praktisk talt alle polymersystemer å anvende slike forhold mellom comonomerene at den erholdte polymer vil være uoppløse-lig ved praktisk talt en hvilkensomhelst pH. Polymeriseringsbetin-gelsene for disse monomere og comonomere bor derfor reguleres slik at der vil dannes en polymer med de ønskede opploselighetsegenskaper . A number of polymer systems are known which are insoluble in neutral or acidic media, but which are soluble in alkaline media. Copolymers of acrylic or methacrylic acid and an alkyl methacrylate, such as methyl methacrylate, are e.g. applicable, such as a copolymer of 80% ethyl acrylate and 20% methacrylic acid. As other examples of usable polymers can be mentioned carboxyl ester lactones, styrene monoethyl maleate heteropolymers, poly-N,N'-diethylacrylamide and the like. There are also known polymer systems which are insoluble in neutral or alkaline media, but which are soluble in acidic media. As examples of these polymer systems, copolymers of amino acrylates, such as dimethylaminomethacrylate, and an alkyl acrylate, such as ethyl acrylate, can be mentioned. It is of course possible for practically all polymer systems to use such ratios between the comonomers that the resulting polymer will be insoluble at practically any pH. The polymerization conditions for these monomers and comonomers should therefore be regulated so that a polymer with the desired solubility properties will be formed.

Kjemisk' forskjellige, oppløsende grupper kan anvendes i harpiksene for produktene ifolge oppfinnelsen. SSelektivt alkaliopploselige harpikser kan inneholde slike funksjonelle grupper som carboxylsyrer, sulfonsyrer, sulfitter, sulfater, fenoliske hydroxylgrupper, estere, amider og lignende. Chemically different dissolving groups can be used in the resins for the products according to the invention. Selectively alkali-soluble resins may contain such functional groups as carboxylic acids, sulfonic acids, sulfites, sulfates, phenolic hydroxyl groups, esters, amides and the like.

Selektivt syreopploselige harpikser kan inneholde slike funksjonelle grupper som aminer, estere, amider og nitriler. Det er ikke nodvendig at surheten eller basisiteten.skal være "fri", men det er av kritisk betydning at de vil reagere under oppløsning av polymeren i henholdsvis en alkalisk eller sur opplosning. Selectively acid soluble resins may contain such functional groups as amines, esters, amides and nitriles. It is not necessary that the acidity or basicity be "free", but it is of critical importance that they will react during dissolution of the polymer in an alkaline or acidic solution, respectively.

En rekke fremgangsmåter for fremstilling av polymerer med de ovennevnte egenskaper er blitt beskrevet i litteraturen. For et gitt polymersystem som skal anvendes i produktene ifolge oppfinnelsen, vil fagmannen eksperimentelt kunne fastslå de optimale polymer is eringspar ame tre . A number of methods for producing polymers with the above-mentioned properties have been described in the literature. For a given polymer system to be used in the products according to the invention, the person skilled in the art will be able to experimentally determine the optimal polymer isation parameters.

Produktene ifolge oppfinnelsen kan oppdeles på vanlig måte til den stbrrelse og form som er nbdvendig for sluttanvendel-sen. På grunn av produktets art og dets fremstillingsmåte kan der anvendes en kontinuerlig oppdeling. Ifolge en utfbrelsesform av oppfinnelsen kan produktets kanter varmpresses på kjent måte slik at der fåes et produkt med glatte kanter. Derved vil en lekkasje fra kantene lettere kunne hindres. The products according to the invention can be divided in the usual way into the size and shape required for the end use. Due to the nature of the product and its manufacturing method, a continuous division can be used. According to one embodiment of the invention, the edges of the product can be hot-pressed in a known manner so that a product with smooth edges is obtained. This will make it easier to prevent leakage from the edges.

Produktene ifolge oppfinnelsen kan efter bruk kastes ved ganske enkelt å anbringe dem i et klosett. Der tilsettes så The products according to the invention can be thrown away after use by simply placing them in a toilet. It is then added

et i husholdningen vanlig forekommende nbytraliseringsmiddel, og det hele spyles bort. Dersom der anvendes et surt harpiksbindemiddel, kan der for å gjore klosettvannet tilstrekkelig alkalisk med fordel anvendes bl.a. ammoniakk, natriumcarbonat, natrium- og ammoniumborat, blekemiddel, natriumhypokloritt og lignende. Dersom der anvendes et basisk harpiksbindemiddel, kan materialer som si-tronsyre, eddiksyre, garvesyre og borsyre, og sure salter, som kalsium- og aluminiumklorid, anvendes for å gjore klosettvannet tilstrekkelig surt. Der taes ved oppfinnelsen sikte på å tilsette en sur eller alkalisk tablett eller et innpakket pulver som er fremstillet i denne form for å minske ulemper i forbindelse med lagring, håndtering og utmåling av den nbdvendige syre eller base. Dersom underlagsfilmen ikke består av et materiale som vil opplbses av nøytraliseringsmidlet, kan den selvfblgelig rives av og kastes som vanlig avfall. a neutralizing agent commonly found in the household, and it is all flushed away. If an acidic resin binder is used, in order to make the toilet water sufficiently alkaline, it can advantageously use, among other things, ammonia, sodium carbonate, sodium and ammonium borate, bleach, sodium hypochlorite and the like. If a basic resin binder is used, materials such as citric acid, acetic acid, tannic acid and boric acid, and acidic salts, such as calcium and aluminum chloride, can be used to make the toilet water sufficiently acidic. The aim of the invention is to add an acidic or alkaline tablet or a wrapped powder which has been produced in this form in order to reduce disadvantages in connection with storage, handling and measuring out the necessary acid or base. If the backing film does not consist of a material that will be dissolved by the neutralizing agent, it can of course be torn off and thrown away as normal waste.

Dat er ikke nodvendig å opptrevle produktene eller It is not necessary to unravel the products or

å anvende spesielle klosettarmaturer for å kunne spyle bort sani- to use special toilet fittings to be able to flush away sanitary

tærproduktene ifolge oppfinnelsen. Der oppnåes en tilstrekkelig dispersjon straks efter tilsetningen av det sure eller basiske materiale til at sanitærproduktene vil kunne spyles bort uten fare for å tilstoppe rorsystemet. Dispergeringshastigheten er selvføl-gelig en funksjon av det tilsatte materiales noytraliseringsevne. the toe products according to the invention. A sufficient dispersion is achieved immediately after the addition of the acidic or basic material so that the sanitary products can be flushed away without the risk of clogging the pipe system. The dispersion rate is of course a function of the neutralizing ability of the added material.

For at produktene skal få andre onskede egenskaper kan der i produktene innfores forenelige tilsetningsmidler, som vanlige bakteriostatiske midler, luktfjernende midler og farve-stoff er. In order for the products to have other desired properties, compatible additives can be introduced into the products, such as common bacteriostatic agents, deodorizing agents and dyes.

Claims (3)

1. Laminert produkt som kan spyles bort i et klosett og som er istand til å absorbere legemsutsondringer, omfattende en pute av celluloseholdige fibre, f.eks. av vilkårlig orienterte tremassefibre, et fuktighetsgjennomtrengelig lag omfattende parallelle stapelfibre festet til og dekkende en side av puten, en for legemsutsondringer ugjennomtrengelig film festet til og dekkende den annen side av puten, og et innpreget nettverk av bindemiddel over det fuktighetsgjennomtrengelige lags overflate, karakterisert ved at en rekke kanaler (18) er anordnet med mellomrom over det fuktighetsgjennomtrengelige lags (1) overflate slik at i det vesentlige alle parallelle stapelfibre krysses av minst én av kanalene som stikker ned i puten (2) av celluloseholdige fibre og som inneholder bindemidC(let i form av en termoplastharpiks (9) som er uopploselig i vann innen legemsutsondringens pH-område og opplbselig i vann ved valgte pH-verdier utenfor dette område og har i det vesentlige de samme opplbselighetsegenskaper som den for legemsutsondringer ugjen-nomtrengelige film (15) innen de angitte pH-områder.1. Laminated product which can be flushed away in a toilet and which is capable of absorbing bodily secretions, comprising a pad of cellulose-containing fibres, e.g. of randomly oriented wood pulp fibers, a moisture-permeable layer comprising parallel staple fibers attached to and covering one side of the pad, a film impermeable to bodily excreta attached to and covering the other side of the pad, and an imprinted network of binder over the surface of the moisture-permeable layer, characterized in that a number of channels (18) are arranged at intervals over the surface of the moisture-permeable layer (1) so that substantially all parallel staple fibers are crossed by at least one of the channels which protrude into the pad (2) of cellulosic fibers and which contains binder C (let in form of a thermoplastic resin (9) which is insoluble in water within the pH range of bodily secretions and soluble in water at selected pH values outside this range and has essentially the same solubility properties as the film (15) impermeable to bodily secretions within the specified pH ranges. 2. Produkt ifolge krav 1, karakterisert ved at harpiksen (9) er opploselig i vann bare innen det alkaliske pH-område.2. Product according to claim 1, characterized in that the resin (9) is soluble in water only within the alkaline pH range. 3. Produkt ifolge krav 1 eller 2, karakterisert ved at kanalene (18) krysser hverandre med jevn avstand mellom krysningspunktene.3. Product according to claim 1 or 2, characterized in that the channels (18) cross each other with a uniform distance between the crossing points.
NO0215/69A 1968-01-22 1969-01-21 NO122495B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US69971168A 1968-01-22 1968-01-22

Publications (1)

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NO122495B true NO122495B (en) 1971-07-05

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Country Status (9)

Country Link
BE (1) BE727255A (en)
BR (1) BR6905755D0 (en)
CH (1) CH515714A (en)
DE (1) DE1902695A1 (en)
FR (1) FR2000556A1 (en)
GB (1) GB1236904A (en)
NL (1) NL6901079A (en)
NO (1) NO122495B (en)
SE (1) SE334335B (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZA75479B (en) * 1974-02-04 1976-08-25 Colgate Palmolive Co Disposable diaper with holes or wells
JPS5746974Y2 (en) * 1977-06-17 1982-10-15
US4392862A (en) * 1981-03-02 1983-07-12 The Procter & Gamble Company Absorptive device
US4443512A (en) * 1981-09-22 1984-04-17 Colgate-Palmolive Company Absorbent article with densified areas
GB8822736D0 (en) * 1988-09-28 1988-11-02 Shipley R Disposable diapers
JP3091361B2 (en) * 1994-06-07 2000-09-25 ユニ・チャーム株式会社 Disposable body fluid absorbent articles
FI100165B (en) * 1995-03-01 1997-10-15 Bki Holding Corp Process for making a suction layer for a hygiene product and a suction layer made according to the method
US7276053B1 (en) * 1999-08-16 2007-10-02 Johnson & Johnson, Inc. Compression-resistant sanitary napkin
US6613954B1 (en) 2000-04-20 2003-09-02 The Procter & Gamble Company Dispersible absorbent products and methods of manufacture and use
US6670521B2 (en) 2000-04-20 2003-12-30 The Procter & Gamble Company Dispersible absorbent products and methods of manufacture and use
JP4261194B2 (en) 2001-04-20 2009-04-30 ザ プロクター アンド ギャンブル カンパニー Dispersible absorbent product with multilayer structure, and method of manufacture and use
JP4401750B2 (en) * 2003-11-25 2010-01-20 大王製紙株式会社 Manufacturing method of absorbent body and absorbent body for disposable diaper obtained thereby

Also Published As

Publication number Publication date
CH515714A (en) 1971-11-30
NL6901079A (en) 1969-07-24
GB1236904A (en) 1971-06-23
BE727255A (en) 1969-07-22
DE1902695A1 (en) 1969-11-27
FR2000556A1 (en) 1969-09-12
BR6905755D0 (en) 1973-05-08
SE334335B (en) 1971-04-26

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