NO137479B - Absorberende gjenstand for engangsbruk. - Google Patents
Absorberende gjenstand for engangsbruk. Download PDFInfo
- Publication number
- NO137479B NO137479B NO752159A NO752159A NO137479B NO 137479 B NO137479 B NO 137479B NO 752159 A NO752159 A NO 752159A NO 752159 A NO752159 A NO 752159A NO 137479 B NO137479 B NO 137479B
- Authority
- NO
- Norway
- Prior art keywords
- film
- slits
- liquid
- absorbent
- hydrogel
- Prior art date
Links
- 230000002745 absorbent Effects 0.000 claims description 35
- 239000002250 absorbent Substances 0.000 claims description 35
- 239000007788 liquid Substances 0.000 claims description 26
- 239000000463 material Substances 0.000 claims description 13
- 230000002209 hydrophobic effect Effects 0.000 claims description 7
- 229920002125 Sokalan® Polymers 0.000 claims description 5
- 239000004584 polyacrylic acid Substances 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 4
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims description 4
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims description 4
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims description 4
- 229920000233 poly(alkylene oxides) Polymers 0.000 claims description 3
- 239000000017 hydrogel Substances 0.000 description 36
- 210000002700 urine Anatomy 0.000 description 8
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 229920002678 cellulose Polymers 0.000 description 3
- 239000001913 cellulose Substances 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 206010021639 Incontinence Diseases 0.000 description 2
- 229920001131 Pulp (paper) Polymers 0.000 description 2
- 239000011358 absorbing material Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- -1 Polyethylene Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 229920006266 Vinyl film Polymers 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 229920006244 ethylene-ethyl acrylate Polymers 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229920001477 hydrophilic polymer Polymers 0.000 description 1
- 230000004941 influx Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000005865 ionizing radiation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 229920003176 water-insoluble polymer Polymers 0.000 description 1
Classifications
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- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/06—Vegetal fibres
- B32B2262/062—Cellulose fibres, e.g. cotton
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/31—Heat sealable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/716—Degradable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/726—Permeability to liquids, absorption
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/726—Permeability to liquids, absorption
- B32B2307/7265—Non-permeable
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/728—Hydrophilic
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/73—Hydrophobic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2323/00—Polyalkenes
- B32B2323/04—Polyethylene
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2555/00—Personal care
- B32B2555/02—Diapers or napkins
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- Health & Medical Sciences (AREA)
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- Epidemiology (AREA)
- Engineering & Computer Science (AREA)
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- Animal Behavior & Ethology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Biomedical Technology (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Hematology (AREA)
- Materials Engineering (AREA)
- Absorbent Articles And Supports Therefor (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Laminated Bodies (AREA)
Description
Oppfinnelsen vedrører absorberende gjenstander for engangsbruk, såsom bleier, inkontinentia-bleier og lignende, innbefattende et'hydrofobt, væskegjennomtrengelig toppark for plasering hosliggende til legemet, et væskeugjennomtrengelig bakgrunnsark <p>g en hydrofil, i det vesentlige vannuoppløselig film av bestrålt polyalkylenoksyd, polyvinylpyrrolidon, polyakrylsyre eller blandinger herav, som er anbragt mellom topparket og bakgrunnsarket.
Anvendelsen av absorberende gjenstander for engangsbruk, såsom bleier, har øket betydelig i de senere år på grunn av at de er lette å bruke, er billige og har fordelen av å være en ren, frisk absorberende gjenstand uten ulempene ved vasking, lagring, folding og gjentatt anvendelse, slik det tidligere var nødvendig ved gjenstander som ikke var beregnet for engangsbruk. Fordelene ved å benytte absorberende gjenstander til engangsbruk er særlig fremherskende med hensyn til bruken av engangsbleier som erstatning for de stoffbleier som tradisjonelt er blitt benyttet.
Oppfinnelsen skal i det følgende beskrives nærmere under henvisning til en engangsbleie, men den lære som er angitt kan også anvendes til andre absorberende gjenstander for engangsbruk, såsom inkontinentia-bleier og lignende.
De kjente engangsbleier omfatter vanligvis et væskeabsorberende lag, et væskeugjennomtrengelig grunnark og et hydrofobt væskegjennomtrengelig legeme som utgjør topplaget som er i kontakt med brukeren. Det væskeabsorberende lag er vanligvis et absorberende materiale med en høy absorbsjonsgrad. Det absorberende materiale kan være et silkepapir eller en vattering som er stablet til ønsket tykkelse, eller tremasseprodukter, såsom dunformet tre. Det er blitt foreslått, f. eks. i belgisk patent nr. 752.366, som væskeabsorberende materiale å benytte en film av et uoppløselig hydrogel. Et hydrogel er en hydrofil, vannuoppløselig polymer, såsom bestrålt polyetylenoksyd, polyvinylpyrrolidon, polyakrylsyre og lignende. Slike hydrogele filmer er særlig interessante for bruk i absorberende gjenstander for engangsbruk, da de kan absorbere en meget stor mengde vandig væske. Imidlertid er hastigheten, i motsetning til meng-den av væske som absorberes av en slik hydrogelfilm, relativt lav. Som et resultat vil f. eks. ved en baby hydrogenfilmen ikke absorbere urinen hurtig nok til å forhindre dannelsen av urindammer som kan bevirke lekkasje rundt kantene til bleien og bevirke at babyen får det ubehagelig på grunn av fuktigheten nær huden.
For å hindre dannelsen av slike urindammer når det benyttes en hydrogelfilm som absorberende materiale i en engangsbleie, har man forsøkt å anordne små hullåpninger i filmen som ville tillate gjennomgang av urin til den side av filmen som ligger vendt bort fra babyen for derved å holde fuktigheten borte fra huden til hydrogelfilmen har hatt en mulighet til å absorbere den. Når det imidlertid ble benyttet små hullåpninger i filmen, fant man at så snart filmen hadde absorbert fuktighet, ville hullene svelle og lukkes og ikke lenger tillate gjennomgang av væske til baksiden av filmen. Man har så forsøkt å benytte relativt lange slisser, f. eks..slisser med en lengde på 3,7 cm, i filmen.til dette formål. Når filmen absorberte fuktighet, viste det seg uheldigvis at slissene i realiteten åpnet seg opp for å tillate gjennomgang av væske, men at slissene åpnet seg til så store åpninger at væsken strømmet rett.tilbake fra den motsatte side til forsiden. Dette foregikk selv med et hjelpelag av hydrofilt absorberende materiale på den side av filmen som var hosliggende til bakgrunnsarket.
Man har funnet at de ovenfor nevnte ulemper ved anvendelsen av en hydrogel film i engangsgjenstander, såsom bleier, kan bli vesentlig forbedret ved anvendelsen av en. hydrogel film med rette slisser med en bestemt lengde. De slisser som benyttes i hydrogelfilmen er av en størrelse slik at når filmen absorberer væske, vil slissene danne åpninger som tillater gjennomgang av urin fra det legeme som danner kontakt-siden av bleien til den andre side av filmen. Således vil dammer av væske (urin) på den side som vender mot babyens hud unngås. Når filmen blir mettet, vil slissene ha en tendens til å lukke seg pg derved redusere strømmen av væske-tilbake gjennom filmen til den side som vender mot babyens hud. Optimale resultater er oppnådd hvis et sekundært absorberende lag benyttes på den side av hydrogelfilmen som er hosliggende til det væskeugjennomtrengelige bakgrunnsark.
Det er derfor en hensikt med foreliggende oppfinnelse å tilveiebringe en absorberende gjenstand som inneholder et hy-drogelt væskeabsorberende arkmateriale med bestemte lengder oppslisset som åpninger og med en høy grad av absorbsjonsegenskaper.
En videre hensikt er å tilveiebringe en engangsbleie med en hydrogelfilm som væskeabsorberende materiale og som er behandlet slik at den tillater at noe væske passerer gjennom hy-drogelf ilmen med perioder med ekstra stor tilstrømning.
Disse hensikter blir oppnådd ved hjelp av de trekk som fremgår av kravene.
Oppfinnelsen skal i det følgende nærmere beskrives ved hjelp av utførelseseksémpler som er fremstilt på tegningene, som viser: fig. 1 et perspektivriss av en engangsbleie. oppbygget i samsvar med oppfinnelsen,
fig....2 et snitt langs linjen 2 - 2 på fig. 1,
•fig. 3 et oppriss av en oppslisset hydrogelfilm som er egnet for bruk ved oppfinnelsen, hvorved en del av filmen er blitt fuktet for å illustrere åpningen av slissene som opptrer når filmen absorberer fuktighet.
Tegningen viser på fig. 1 og 2 en absorberende gjenstand, såsom en engangsbleie, hvilken bleie 10 innbefatter et hydrofobt, væskegjennomtrengelig toppark 11 som er i kontakt med legemet, en oppslisset hydrogelfilm 15 og et hydrofobt væske-ug jennomtrengelig bakgrunnsark 19. Ved en foretrukket utførelse for oppfinnelsen omfatter bleien sekundære absorberende lag 13 og 17 av et væskeabsorberende materiale.
Topparket til engangsbleien ifølge oppfinnelsen er et hydrofobt, væskegjennomtrengelig lag. Topparket kan f. eks. være et skumlag med åpne celler, et løst vevet eller løst pakket ikke-vevet fibrøst lag, et gasbind eller en oppslisset hydrofob film, særlig en etylenetylakrylat kopolymer film, som beskrevet i U.S. patent nr. 3.814.101.
Topparket bør være tynt, fleksibelt, selvbærende, væskegjennomtrengelig eller behandlet slik at det er selektivt væskegjennomtrengelig.. ■
Bakgrunnsarket 19 er et væskeugjennomtrengelig lag eller ark og er fortrinnsvis en olefin- eller vinylfilm. Polyety-len med en tykkelse på ca. 0,01 - 0,04 mm er mest foretrukket. Denne type film er tidligere vært meget brukt til dette formål
og har vanligvis en preget utforming, på sin flate for å simulere følelsen til et stoff.
Som vist på fig. 2 omfatter engangsbleien 10 en hydrogelfilm 15 mellom topplaget og bakgrunnslaget. Filmen er av kjent type og er av og til betegnet kun som "hydrogel". Slike hydrogeler omfatter polyvinyl-pyrrolidon, bestrålt polyalkylenoksyd, polyakrylsyre og blandinger herav. Den foretrukne hydrogelfilm er sammensatt av bestrålt polyetylenoksyd, polyakrylsyre og blandinger herav. Den foretrukne hydrogelfilm er sammensatt av bestrålt polyetylenoksyd, som angitt i U.S. patent nr. 3.264.202. Slikt bestrålt polyetylenoksyd fremstilles ved å ut-sette en vandig oppløsning av en etylenoksydpolymer med en mole-kylarvekt på større enn ca. 100.000 og opp til f. eks. ca. 10.000.000 for ioniserende bestråling i en viss tidsperiode for under disse betingelser å danne en i det vesentlige vannuoppløse-lig hydrof il polymer. For bruk ved foreliggende oppfinnelse fremstilles hydrogelet fortrinnsvis i en filmtykkelse på mellom 0,013 og 0,05 mm.
Som det fremgår av fig. 3 har hydrogelfilmen en rekke korte slisser. Når filmen absorberer fuktighet, åpner slissene seg til øyeformede åpninger. Disse åpninger tillater at vandig væske, såsom urin, lett kan passere gjennom filmen fra den side som vender mot topparket til den andre side som vender mot bakgrunnsarket. Ved perioder med utstrakt innstrømning vil det vanligvis bygges opp lokale dammer av urin på den side av filmen som vender mot topparket hvis det ikke er noen slisser, på grunn av den dårlige absorbsjonshastighet for filmen.
Ved å anordne slisser med bestemt lengde, vil slissene hindre væsken fra å gå tilbake gjennom slissene fra den side som vender mot bakgrunnsarket mot-, den side som vender mot topparket. For å lette dette må slissenes lengde reguleres omhygge-lig. Man har funnet f. eks. at slisser som har en lengde mellom ca. 1,6 og 9,5 mm, og fortrinnsvis mellom ca. 3,2 og 8 mm, er særlig egnet for dette formål. Vanligvis inneholder hydrogelfilmen mellom ca. 2 og 24 slisser pr. 6,5 cm 2 filmflate, og fortrinnsvis mellom 4 og 10 slisser pr. 6,5 cm 2. Slissene kan dan-nes i filmen på en hvilken som helst egnet måte, såsom skjæring med en skarp egg.
Den foretrukne fremgangsmåte for dannelse av slissene i hydrogelfilmen ifølge foreliggende oppfinnelse er beskrevet i U.S. patent nr. 3.762.255. Kort forklart er det i dette patent
. beskrevet en fremgangsmåte og et apparat for gjennomskjæring av tynt arkmateriale, såsom en plastfilm, hvor arkmaterialet føres mellom et spisst verktøy med flere uavhengig ettergivende fremspring som rager ut og en bakgrunnsdel med en nettformet ytre
flate. Det spisse verktøy eller -bakgrunnselementet beveges i forhold til den andre del og bevirker derfor at de ettergivende fremspring følger nettflaten og gjennomskjærer filmen. Det spisse verktøy kan være en metallkam, en trådbørste eller en metall-strimmel med flere i det vesentlige parallelle spor som rager ut fra en kant i retning av den motsatte kant og bestemmer de ettergivende fremspring. Bakgrunnselementet kan være en trådsikt, et perforert metallark, en gravert metallvalse eller et endeløst
belte som drives i lengderetning i forhold til gjennomskjærings-elementet. '
Som nevnt tidligere åpner slissene med en bestemt lengde i hydrogelfilmen seg når de fuktes og tillater at over-skytende væske strømmer gjennom filmen til bakgrunnsarket. Dette er best vist på fig. 3, som er et oppriss av en oppslisset hydrogelfilm som er egnet for bruk i engangsbleien ifølge oppfinnelsen. På fig. 3 ser man at filmen 15 inneholder en rekke slisser 21. Filmen er fuktet x et område som er betegnet med 23. Det skal bemerkes at slissene 21 i det fuktede område 23 har åpnet seg til øyeformede åpninger. Det er særlig interessant å bemerke at der hvor en sliss 21 krysser skillelinjen fra det tørre område på filmen 15 til det fuktige område 23 at den del av slissen 21 i det tørre område forblir lukket, mens delen av slissen som ligger i det fuktige område er åpnet til en øyefor-met åpning 25.
Ved en foretrukket utførelse for oppfinnelsen kan engangsbleien være utstyrt med ekstra fuktighetsabsorberende lag.
F. eks. kan et relativt tynt fuktighetsabsorberende lag være sammensatt f. eks. av cellulosevevnad eller lignende og kan an-bringes mellom topplaget og hydrogelfilmen. Et annet lag av fuktighetsabsorberende materiale kan plaseres mellom bakgrunnsarket og hydrogelfilmen. Hensikten med de to sekundære absorberende lag, og særlig det absorberende lag som er plasert mellom bakgrunnsarket og hydrogelfilmen, er midlertidig å absorbere fuktighet som føres ajennom slissene i hydrogelfilmen til hydrogelfilmen har hatt anledning til å absorbere fuktigheten.
Absorberende materialer, andre enn celluloseduk, vil selvfølgelig også kunne benyttes ved oppbyggingen ifølge oppfinnelsen. F. eks. kan absorberende ikke-vevede puter fremstilles med enhver ønsket tykkelse og erstatte cellulosevevnadslaget som ér omtalt ovenfor.
Et slikt absorberende lag eller pute som er benyttet i stor grad i engangsbleier, er et tremasseprodukt som kan be-tegnes som dun av trevirke og som fremstilles på samme måte som et ikke-vevet stoff. Denne type absorberende pute er også an-vendbar som absorberende puter for innsetningen. ifølge oppfinnelsen .
Forskjellige naturlige og syntetiske polymere materialer er i seg selv absorberende eller kan gjøres absorberende og vil. derfor kunne anvendes som eller i forbindelse med det absorberende -lag ifølge oppfinnelsen..
Det eneste kriterium for anvendbarhet ved foreliggende oppfinnelse er at materialet som utgjør de absorberende lag er absorberende, kan fremstilles i form av en pute og være for-enlig med avfallsproduktene som det vil komme i kontakt med og at det ikke er irriterende for huden.
Fremstillingen av bleien-kan gjennomføres på mange forskjellige måter. En foretrukket teknikk er å tilskjære topparket og bakgrunnsarket til tilnærmet den samme dimensjon, som svarer til den ønskede størrelse for den endelige bleie.
Topparket og bakgrunnsarket blir så plasert over hver-andre med hydrogelfilmen laminert derimellom tilnærmet i sente-ret mellom arkene. Hydrogelfilmen bør ha en lengde og bredde noe mindre enn topparket og grunnarket for å tillate en forsegl-ing av topparket til bakgrunnsarket rundt omkretsen. Et over-heng på ca. 1,2 5 cm på hver side bør være tilstrekkelig. I til-legg blir hydrogelfilmen oppslisset i samsvar med det som er sagt ovenfor. Avtetningen kan hensiktsmessig gjennomføres ved anvendelsen av et klebemiddel eller hvis begge ark er termo-plastiske ved varmeforsegling av kantene.
I det tilfelle hvor en eller flere absorberende puter benyttes i forbindelse med hydrogelfilmen, kan putene legges på hydrogelfilmen og sammensettes til bleien som beskrevet ovenfor.
Claims (2)
- Absorberende gjenstand for engangsbruk, for anbring-else hosliggende til legemet, innbefattende et hydrofobt, væskegjennomtrengelig toppark (11) for plasering hosliggende til legemet, et væskeugjennomtrengelig bakgrunnsark (19) og en hydrofil, i det vesentlige vannuoppløselig film (15) av bestrålt polyalkylenoksyd, polyvinylpyrrolidon, polyakrylsyre eller blandinger herav, som er anbragt mellom topparket (11) og bakgrunnsarket (19), karakterisert ved at filmen (15) inneholder mellom 2 og 24 slisser (21) pr. 6,5 cm 2 filmflate, hvilke slisser (21) har en lengde mellom 1,6 og 9,5 mm,hvorved væske som kommer i kontakt med filmen (15), bevirker at filmen sveller og derved åpner slissene (21) for å tillate gjennomgang av væske gjennom dem, og at fortrinnsvis et lag (15, 17) av hydrofilt, absorberende materiale er anbragt på en eller begge sider av filmen (15).
- 2. Absorberende gjenstand ifølge krav 1, karakterisert ved at slissene (21) har en lengde mellom 3,2 og 8 mm.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US480523A US3890974A (en) | 1974-06-18 | 1974-06-18 | Disposable absorbent article containing slitted hydrogel film |
Publications (3)
Publication Number | Publication Date |
---|---|
NO752159L NO752159L (no) | 1975-12-19 |
NO137479B true NO137479B (no) | 1977-11-28 |
NO137479C NO137479C (no) | 1978-03-08 |
Family
ID=23908286
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO752159A NO137479C (no) | 1974-06-18 | 1975-06-17 | Absorberende gjenstand for engangsbruk |
Country Status (14)
Country | Link |
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US (1) | US3890974A (no) |
JP (1) | JPS5114436A (no) |
AT (1) | AT348459B (no) |
BE (1) | BE830344A (no) |
CA (1) | CA1035902A (no) |
CH (1) | CH592421A5 (no) |
DE (1) | DE2525987A1 (no) |
DK (1) | DK135784B (no) |
FR (1) | FR2275313A1 (no) |
GB (1) | GB1503207A (no) |
NL (1) | NL7507200A (no) |
NO (1) | NO137479C (no) |
SE (1) | SE400022B (no) |
ZA (1) | ZA753887B (no) |
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US5397316A (en) * | 1993-06-25 | 1995-03-14 | The Procter & Gamble Company | Slitted absorbent members for aqueous body fluids formed of expandable absorbent materials |
US5466518A (en) * | 1993-08-17 | 1995-11-14 | Kimberly-Clark Corporation | Binder compositions and web materials formed thereby |
US5868724A (en) * | 1993-10-22 | 1999-02-09 | The Procter & Gamble Company | Non-continuous absorbent cores comprising a porous macrostructure of absorbent gelling particles |
US5713881A (en) * | 1993-10-22 | 1998-02-03 | Rezai; Ebrahim | Non-continuous absorbent composites comprising a porous macrostructure of absorbent gelling particles and a substrate |
US5536264A (en) * | 1993-10-22 | 1996-07-16 | The Procter & Gamble Company | Absorbent composites comprising a porous macrostructure of absorbent gelling particles and a substrate |
CA2116953C (en) * | 1993-10-29 | 2003-08-19 | Kimberly-Clark Worldwide, Inc. | Absorbent article which includes superabsorbent material located in discrete elongate pockets placed in selected patterns |
US5411497A (en) * | 1993-10-29 | 1995-05-02 | Kimberly-Clark Corporation | Absorbent article which includes superabsorbent material located in discrete pockets having an improved containment structure |
US5830201A (en) * | 1994-01-14 | 1998-11-03 | Frederick W. George | Flushable diaper and method |
WO1995022357A1 (en) * | 1994-02-17 | 1995-08-24 | The Procter & Gamble Company | Porous absorbent materials having modified surface characteristics and methods for making the same |
US5372766A (en) * | 1994-03-31 | 1994-12-13 | The Procter & Gamble Company | Flexible, porous, absorbent, polymeric macrostructures and methods of making the same |
US5496874A (en) * | 1994-11-02 | 1996-03-05 | Kimberly-Clark Corporation | Moldable hydrodisintegratable material and products formed thereby |
US5700553A (en) * | 1995-11-16 | 1997-12-23 | Kimberly-Clark Corporation | Multilayer hydrodisintegratable film |
US5868991A (en) * | 1996-07-26 | 1999-02-09 | Kimberly-Clark Worldwide, Inc. | Method for low temperature injection molding of hydrodisintegratable compositions |
GB2333724B (en) * | 1998-01-30 | 2002-07-17 | Secr Defence | Smart porous film or material |
US6770579B1 (en) | 1999-05-10 | 2004-08-03 | The Secretary Of State For Defense | Smart porous film or material |
GB2382305B (en) * | 2001-11-23 | 2004-12-15 | Johnson & Johnson Medical Ltd | Absorbent wound dressings containing a hydrogel layer |
WO2005000372A1 (ja) * | 2003-06-26 | 2005-01-06 | Zuiko Corporation | 創傷被覆材および創傷被覆材キット |
US20060173431A1 (en) * | 2005-02-01 | 2006-08-03 | Laumer Jason M | Absorbent articles comprising polyamine-coated superabsorbent polymers |
US8652116B2 (en) * | 2005-09-30 | 2014-02-18 | The Procter & Gamble Company | Preferential bend structure and articles containing said structure |
US20110281088A1 (en) * | 2010-05-17 | 2011-11-17 | Swap Loop Technology Company Limited | Moisture absorptive and perspiratory cloth structure |
US8969652B2 (en) * | 2010-09-21 | 2015-03-03 | The Procter & Gamble Company | Disposable absorbent article |
JPWO2014046124A1 (ja) * | 2012-09-18 | 2016-08-18 | 国立研究開発法人理化学研究所 | ヒドロゲルの接着方法 |
US9861533B2 (en) | 2013-05-08 | 2018-01-09 | The Procter & Gamble Company | Apertured nonwoven materials and methods for forming the same |
JP2017536882A (ja) | 2014-11-06 | 2017-12-14 | ザ プロクター アンド ギャンブル カンパニー | ゾーン状パターン化有孔ウェブ、積層体、及びその作製方法 |
WO2016073724A1 (en) | 2014-11-06 | 2016-05-12 | The Procter & Gamble Company | Crimped fiber spunbond nonwoven webs / laminates |
US20180229216A1 (en) | 2017-02-16 | 2018-08-16 | The Procter & Gamble Company | Absorbent articles with substrates having repeating patterns of apertures comprising a plurality of repeat units |
US11122846B2 (en) * | 2018-10-25 | 2021-09-21 | Cornell University | Breathable fabrics with smart pores |
EP3958809A1 (en) | 2019-04-24 | 2022-03-02 | The Procter & Gamble Company | Highly extensible nonwoven webs and absorbent articles having such webs |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3814101A (en) * | 1970-09-17 | 1974-06-04 | Union Carbide Corp | Disposable absorbent articles |
US3292619A (en) * | 1963-12-06 | 1966-12-20 | Kendall & Co | Absorbent dressing |
US3399672A (en) * | 1966-02-08 | 1968-09-03 | Johnson & Johnson | Dressing |
US3543750A (en) * | 1968-01-15 | 1970-12-01 | Johnson & Johnson | Perforate film dressing and method of making same |
US3783872A (en) * | 1969-06-23 | 1974-01-08 | Union Carbide Corp | Disposable absorbent pads containing insoluble hydrogels |
-
1974
- 1974-06-18 US US480523A patent/US3890974A/en not_active Expired - Lifetime
-
1975
- 1975-05-20 CA CA227,284A patent/CA1035902A/en not_active Expired
- 1975-05-23 GB GB22481/75A patent/GB1503207A/en not_active Expired
- 1975-06-11 DE DE19752525987 patent/DE2525987A1/de active Pending
- 1975-06-17 CH CH786975A patent/CH592421A5/xx not_active IP Right Cessation
- 1975-06-17 FR FR7518928A patent/FR2275313A1/fr active Granted
- 1975-06-17 DK DK273075AA patent/DK135784B/da unknown
- 1975-06-17 ZA ZA00753887A patent/ZA753887B/xx unknown
- 1975-06-17 JP JP50072803A patent/JPS5114436A/ja active Granted
- 1975-06-17 AT AT463475A patent/AT348459B/de not_active IP Right Cessation
- 1975-06-17 NO NO752159A patent/NO137479C/no unknown
- 1975-06-17 NL NL7507200A patent/NL7507200A/xx not_active Application Discontinuation
- 1975-06-17 BE BE157421A patent/BE830344A/xx unknown
- 1975-06-17 SE SE7506953A patent/SE400022B/xx unknown
Also Published As
Publication number | Publication date |
---|---|
FR2275313A1 (fr) | 1976-01-16 |
AU8215475A (en) | 1976-12-23 |
DK135784B (da) | 1977-06-27 |
CA1035902A (en) | 1978-08-08 |
AT348459B (de) | 1979-02-26 |
DE2525987A1 (de) | 1976-01-02 |
ATA463475A (de) | 1978-07-15 |
DK135784C (no) | 1977-11-28 |
SE7506953L (sv) | 1975-12-19 |
JPS5327656B2 (no) | 1978-08-09 |
NL7507200A (nl) | 1975-12-22 |
GB1503207A (en) | 1978-03-08 |
CH592421A5 (no) | 1977-10-31 |
NO752159L (no) | 1975-12-19 |
ZA753887B (en) | 1976-05-26 |
NO137479C (no) | 1978-03-08 |
BE830344A (fr) | 1975-12-17 |
SE400022B (sv) | 1978-03-13 |
FR2275313B1 (no) | 1979-01-19 |
JPS5114436A (en) | 1976-02-04 |
US3890974A (en) | 1975-06-24 |
DK273075A (no) | 1975-12-19 |
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