PT79041B - Auxiliary absorbent article - Google Patents

Auxiliary absorbent article Download PDF

Info

Publication number
PT79041B
PT79041B PT7904184A PT7904184A PT79041B PT 79041 B PT79041 B PT 79041B PT 7904184 A PT7904184 A PT 7904184A PT 7904184 A PT7904184 A PT 7904184A PT 79041 B PT79041 B PT 79041B
Authority
PT
Portugal
Prior art keywords
absorbent article
auxiliary
superabsorbent
auxiliary absorbent
primary
Prior art date
Application number
PT7904184A
Other languages
Portuguese (pt)
Other versions
PT79041A (en
Original Assignee
Chicopee
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 Chicopee filed Critical Chicopee
Publication of PT79041A publication Critical patent/PT79041A/en
Publication of PT79041B publication Critical patent/PT79041B/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS 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
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent 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 shape
    • A61F13/47—Sanitary towels, incontinence pads or napkins
    • A61F13/474—Sanitary towels, incontinence pads or napkins adjustable
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS 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
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent 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 shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/493—Absorbent articles specially adapted to be worn around the waist, e.g. diapers adjustable by adding or removing material, e.g. umbilical cord arrangements
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS 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
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/505—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators with separable parts, e.g. combination of disposable and reusable parts
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS 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
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent 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
    • A61F13/534—Absorbent 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 an inhomogeneous composition through the thickness of the pad
    • A61F13/537—Absorbent 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 an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS 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
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent 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
    • A61F2013/51002—Absorbent 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 with special fibres
    • A61F2013/51038—Absorbent 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 with special fibres being a mixture of fibres
    • A61F2013/51042—Absorbent 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 with special fibres being a mixture of fibres with hydrophobic and hydrophilic fibres
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS 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
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent 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
    • A61F2013/530481—Absorbent 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 superabsorbent materials, i.e. highly absorbent polymer gel materials
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS 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
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent 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
    • A61F2013/530481—Absorbent 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 superabsorbent materials, i.e. highly absorbent polymer gel materials
    • A61F2013/53051—Absorbent 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 superabsorbent materials, i.e. highly absorbent polymer gel materials being only in particular parts or specially arranged
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS 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
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent 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
    • A61F13/534—Absorbent 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 an inhomogeneous composition through the thickness of the pad
    • A61F2013/53445—Absorbent 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 an inhomogeneous composition through the thickness of the pad from several sheets

Landscapes

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

Abstract

An auxiliary absorbent article for use atop a primary absorbent article such as a diaper, said auxiliary absorbent article comprising an upper facing layer, a superabsorbent layer and an undersurface, said superabsorbent layer comprising a superabsorbent material dispersed at a matrix such that fluid passes through said auxiliary absorbent article and may be absorbed by the primary absorbent article and subsequently absorbed by the auxiliary absorbent article in the regions remote from the initial wetting. <IMAGE>

Description

DESCRIÇÃO DOS DESENHOS

A figura 1 representa uma vista em corte trans versai do artigo absorvente auxiliar de acordo com a presente invenção no topo de um artigo absorvente primário, uma fralda.

A figura 2 é uma vista em corte transversal de uma implementação preferível do artigo absorvente auxiliar da presente invenção.

A figura 3 é uma vista plana de topo esquemática de uma técnica anterior de penso de reforço colocado numa fralda.

A figura 4 é uma vista plana de topo esquemática de um artigo absorvente auxiliar, de acordo com a presente invenção, colocado numa fralda.

- 3 -

A figura 5 é uma vista plana de topo esquemática de outra implementação do artigo absorvente auxiliar da presente invenção colocado numa fralda.

DESCRIÇÃO DETALHADA DA INVENÇÃO

A figura 1 apresenta um artigo absorvente auxiliar de acordo com a presente invenção, mostrado em sentido geral em 10, como usado no topo de um artigo absorvente primário tal como uma fralda mostrada em sentido geral em 12, A fral da compreende uma camada de revestimento 14, um penso absorvente 16, uma camada de apoio 18 e abas de fita 20, 0 artigo absoí vente auxiliar compreende uma camada de revestimento 22, uma camada superabsorvente 24 e uma camada inferior 26, Em uso, o artigo absorvente auxiliar é colocado no topo do artigo absorvente primário pondo a camada inferior 26 do artigo absorvente auxiliar em contacto com a superfície superior da fralda, A camada de revestimento 22 do artigo absorvente auxiliar pode com preender qualquer estrutura permeável à humidade não tecida, incluindo fibras cardadas, aleatoriamente dispostas ou tecidas de 100 % de polyester, seda artificial, fibras de polypropyleno ou misturas disto, ou uma combinação de polpas de madeira e misturas de fibras tal como descrito na USSN 382731. A camada superabsorvente 24 compreende um material superabsorvente disperso numa matriz de modo a que o fluido passe através do artigo absorvente auxiliar para o artigo absorvente primário. Isto é conseguido através de uma boa dispersão de pequenas partículas de material superabsorvente na matriz. 0 artigo absorvente auxiliar faz uso da capacidade de efeito de torcida do artigo absorvente primário e deste modo requer pouco efeito de torcida da sua parte. Em uso o fluido passa através do artigo absor vente auxiliar pelo menos na primeira molha e é puxado pelo efeito de torcida, pelo artigo absorvente primário para as regiões remotas 28 onde possa ser absorvido pela camada super- 4 -

absorvente do artigo absorvente auxiliar. Este funcionamento contrasta com a maior parte dos usos dos superabsorventes onde o fluido é conduzido à área do superabsorvente, é absorvido e aí fica. No artigo absorvente auxiliar da presente invenção, o material superabsorvente através da camada superabsorvente pode ser utilizado mesmo se a camada superabsorvente tem pouca capacidade intrínseca de efeito de torcida. Para além disso por dei xar o fluido passar inicialmente através da camada superabsorvente para o artigo absorvente primário, o artigo absorvente au xiliar da presente invenção usa a capacidade de absorção e as propriedades de efeito de torcida do artigo absorvente primário não sé para mover o fluido, mas também para dar tempo ao material superabsorvente para aumentar de volume. 0 artigo absorvente auxiliar da presente invenção é fácil de construir, de baixo custo de fabrico e pode ser manufacturado a partir de materiais comercialmente disponíveis. Um dos materiais para uso como camada superabsorvente é a estrutura Akucell, um não tecido com ar compreendendo polpa de madeira e uma matéria na forna de par tículas separadas superabsorventes fabricada pela Akzo. Pazendo uso de materiais superabsorventes, o artigo absorvente auxiliar da presente invenção pode ser realizado com muito menos espessu ra e peso do que os pensos de reforço tradicionais à base de polpa de madeira. Para além disso os materiais superabsorventes são superiores aos pensos de polpa de madeira na medida em que retém fluido bem sobre pressão e não se desmembram da mesma maneira que os pensos e almofadas de polpa o fazem.

A figura 2 mostra uma implementação preferida do artigo absorvente auxiliar da presente invenção mostrado de de uma maneira geral em 40. Nesta implementação a camada de revestimento 42 rodeia a camada superabsorvente 44 formando desse modo a superfície inferior 46 do artigo absorvente auxiliar. Este artigo absorvente auxiliar contém também adesivo intermitente 48 na superfície inferior para fixação à superfície superior ou camada de revestimento do artigo absorvente primário.

No mapa seguinte o artigo absorvente auxiliar

- 5 -

da presente invenção é comparado com os pensos de reforço actualmente disponíveis no mercado. Cada um desses pensos de reforço foi testado em conjunção com uma fralda disponível comercialmente e os números apresentados para a capacidade absorvente e derrame da fralda de per si são uma média de três amostras de fralda cor/iercialmente disponível. Os números para os Revco Diaper Doublers são uma média de dois ensaios teste com a mesma fralda comercialmente disponível. Os números para o artigo absorvente auxiliar da presente invenção compreendem uma média de duas amostras do artigo absorvente auxiliar, também testado em conjunção com a fralda disponível comercialmente, ao passo que a camada superabsorvente incluí duas camadas de Akucell.

íTo método de teste utilizado, a fralda ou fral da com penso de reforço é fixada no seu lugar num boneco, de tamanho natural, construído de forma a ser capaz de expelir para a fralda para simular o uso real. 0 líquido de teste é uma solução salina a 1.59 por cento contendo corante vermelho. A solução de teste é vazada através do boneco para a fralda em incrementos de 90 milímetros, com um intervalo de dez minutos entre incrementos. 0 teste é suspenso à primeira indicação de derrame do líquido para fora da fralda. 0 teste é efectuado com o boneco colocado numa almofada (underpad) de peso conhecido de forma que a quantidade de fluido derramado possa ser determinada, As fraldas e pensos de reforço são também pesados antes e depois dos testes de modo a poder determinar-se a quantidade de líquido absorvido pela fralda ou penso de reforço.

- 6 -

QUADRO

I II III TIDO DE CHJMAÇO PENSO FRALDA FRALDA INTERIOR DE REFORÇO ENSAIADO GRA.AS GRAKAS ENSAIADO Fralda Peso líquido 209.67 17.03 Comercial Peso a seco 37.67 10.05 Aumento total de peso 172.00 6.98 Fralda Peso líquido 202.00 27.56 Revoo Comercial Peso a seco 38.07 10.02 Fralda Aumento total ----- "Doublers" de peso 163.93 17.54

Fralda Peso líquido 237.90 16.11 Artigo Comercial Peso a seco 37.15 10.04 Absorvente Aumento total Auxiliar de peso 200.75 6.07

- 7 IV

V

VI

REFORÇO GRAMAS FLUIDO INTRODUZIDO CAPACIDADE 180 CC 164.92 grs 106.0 17.25 270 CC 88.75 235.2 grs 73.5 9.0 270 CC 64.5 259.15 grs

Como se pode verificar do quadro, o artigo absorvente auxiliar da presente invenção aumenta a capacidade absorvente global da fralda indicada na última coluna do quadro Como também se pode verificar na coluna I, o fluxo, através das possibilidades do artigo absorvente auxiliar da presente invenção, permite ao artigo absorvente por baixo ou à fralda que atinjam a sua total capacidade de absorção o que contrasta com os pensos de reforço convencionais que absorvem imediatamente e impedem que a fralda, por baixo, atinja a sua capacidade de absorção total.

Se bem que a camada superabsorvente, no artigo absorvente auxiliar acima testado, inclua duas camadas de estrutura Akucell, outros produtos comercialmente disponíveis podem ser usados para formar a camada superabsorvente, como é o caso da camada fibrosa superabsorvente Henkel e do laminado Dow Ao contrair esta camada superabsorvente do artigo absorvente au xiliar da presente invenção, apenas é necessário que o material superabsorvente fique bem disperso de modo a que o fluido passe pelo artigo absorvente auxiliar na molha inicial.

A figura 3 mostra uma representação esquemática da observação feita ao testar os Revco Diaper Doublers comer ciais em conjunção com a fralda comercial, estando os seus resultados apresentados no quadro, Na figura 3, a fralda comercial está representada em 50 e o Revco Diaper Doubler em 52, Quan do o penso de reforço e a fralda foram observados apos a introdução e absorção de cada incremento de fluido, notou-se que o fluido 55 era absorvido pelo penso de reforço e, por efeito de torcida, deslocado através do mesmo como mostra a seta. Bode supor-se que o fluido é absorvido pela fralda a partir da super fície inferior do penso de reforço.

A dinâmica de absorção do penso de reforço e da fralda pode ser contrastada com o que se observou com o artigo absorvente auxiliar da presente invenção e a fralda comer- 8 -

ciai, representado esquematicamente na Figura 4. Na Figura 4, a fralda comercialmente disponível está representada em 54 e o artigo absorvente auxiliar é mostrado de forma geral em 56. Como foi abservado em ligação com o uso do artigo absorvente auxiliar de acordo com a presente invenção, a área de molha inicial 58 na Figura 4 permaneceu pequena. Enquanto a área de molha inicial permaneceu pequena, notou-se que o fluido era rapidamente absorvido e movimentado por efeito de torcida pela fral da. Também se verificou que â medida que o tempo decorria o fluido era re-absorvido pelo artigo absorvente auxiliar como mostram as setas, fazendo assim uso da capacidade de absorção do artigo absorvente auxiliar, na área 60 afastada da molha ini ciai do artigo absorvente auxiliar. Estas observações estão de acordo com os resultados obtidos no teste que indicam que com o uso do artigo absorvente auxiliar de acordo com a presente invenção, é utilizada a capacidade de absorção total da fralda por baixo. Contudo, com o uso do penso de reforço Revco, a capacidade de absorção total da fralda, por baixo, não é atingida,

A Figura 5 ilustra esquematicamente uma variante construtiva preferida do artigo absorvente auxiliar de acordo com a presente invenção. Na Figura 5, a fralda é mostrada em 70 e o artigo absorvente auxiliar em forma de T disposto numa fralda em 72 ou alternativamente em 74. Nesta particular variante construtiva, é dada a forma ao artigo que maximize a capacidade absorvente para uso como fralda de criança (sexo masculino ou feminino). A orientação da fralda é mostrada pela localização das abas de fita 76 ao longo da porção da cinta posterior, como é vulgar nas fraldas comerciais. Quando o artigo absorvente auxiliar é disposto na fralda como em 72, proporciona uma capacidade absorvente de reforço máxima para uso com uma criança do sexo feminino. Quando o artigo absorvente auxiliar é disposto como se representa em 74, a capacidade absorvente de reforço máxima é obtida quando a fralda e o artigo absorvente auxiliar são usados por uma criança do sexo masculino. As fraldas descartáveis em forma de T são divulgadas na patente norte-americana 3 768 479.

A descrição e os desenhos anteriores são ilus trativos mas não devem ser considerados como limitativos. Outras variantes e modificações são possíveis sem desvio do espírito e âmbito da presente invenção.

DESCRIPTION OF THE DRAWINGS

Figure 1 shows a cross-sectional cross-sectional view of the auxiliary absorbent article according to the present invention on top of a primary absorbent article, a diaper.

Figure 2 is a cross-sectional view of a preferred embodiment of the auxiliary absorbent article of the present invention.

Figure 3 is a schematic top plan view of a prior art dressing technique placed in a diaper.

Figure 4 is a schematic top planar view of an auxiliary absorbent article, according to the present invention, placed in a diaper.

- 3 -

Figure 5 is a schematic top plan view of another embodiment of the auxiliary absorbent article of the present invention placed in a diaper.

DETAILED DESCRIPTION OF THE INVENTION

Figure 1 shows an auxiliary absorbent article in accordance with the present invention, generally shown at 10, as used at the top of a primary absorbent article such as a diaper shown generally at 12, 12. The blank comprises a cover layer 14, an absorbent dressing 16, a backing layer 18 and tape flaps 20, the auxiliary absorbent article comprises a coating layer 22, a superabsorbent layer 24 and a backsheet layer 26. In use, the auxiliary absorbent article is placed in the top of the primary absorbent article by bringing the underside 26 of the auxiliary absorbent article into contact with the upper surface of the diaper. The cover layer 22 of the auxiliary absorbent article may comprise any non-woven moisture permeable structure, including randomly disposed carded fibers or 100% woven fabrics, artificial silk, polypropylene fibers or mixtures thereof, or a combination of wood pulps and mixtures of fibers as described in USSN 382731. The superabsorbent layer 24 comprises a superabsorbent material dispersed in a matrix so that the fluid passes through the auxiliary absorbent article to the primary absorbent article. This is achieved by a good dispersion of small particles of superabsorbent material in the matrix. The auxiliary absorbent article makes use of the twisting ability of the primary absorbent article and thus requires little twisting effect on its part. In use the fluid passes through the auxiliary absorbent article at least in the first water and is pulled by the twisting effect by the primary absorbent article to the remote regions 28 where it can be absorbed by the super-

absorbent article of the auxiliary absorbent article. This operation contrasts with most uses of the superabsorbents where the fluid is drawn into the superabsorbent area, absorbed and left there. In the auxiliary absorbent article of the present invention, the superabsorbent material through the superabsorbent layer can be used even if the superabsorbent layer has little intrinsic twisting ability. Furthermore, by allowing fluid to initially pass through the superabsorbent layer to the primary absorbent article, the auxiliary absorbent article of the present invention uses the absorbency and twist properties of the primary absorbent article not to move the fluid , but also to allow time for the superabsorbent material to increase in volume. The auxiliary absorbent article of the present invention is easy to construct, inexpensive to manufacture and can be manufactured from commercially available materials. One of the materials for use as a superabsorbent layer is the Akucell structure, a nonwoven with air comprising wood pulp and a material in the superabsorbent separate particle form manufactured by Akzo. In use of superabsorbent materials, the auxiliary absorbent article of the present invention can be accomplished with much less thickness and weight than traditional mastic pulps based on wood pulp. Further, the superabsorbent materials are superior to the wood pulp patches in that it retains fluid well under pressure and does not disintegrate in the same way as the patches and pulp pads do.

Figure 2 shows a preferred implementation of the auxiliary absorbent article of the present invention shown generally at 40. In this implementation the coating layer 42 surrounds the superabsorbent layer 44 thereby forming the lower surface 46 of the auxiliary absorbent article. This auxiliary absorbent article also contains intermittent adhesive 48 on the lower surface for attachment to the top surface or coating layer of the primary absorbent article.

In the following map the auxiliary absorbent article

- 5 -

of the present invention is compared with the reinforcing patches currently available on the market. Each of these dressing dressings has been tested in conjunction with a commercially available diaper and figures shown for absorbent capacity and diaper effusion per se are an average of three colorlessly available diaper samples. The numbers for the Revco Diaper Doublers are an average of two test runs with the same commercially available diaper. The numbers for the auxiliary absorbent article of the present invention comprise a mean of two samples of the auxiliary absorbent article, also tested in conjunction with the commercially available diaper, while the superabsorbent layer includes two layers of Akucell.

For the test method used, the diaper or sling of the reinforcing compound is secured in place to a lifesize doll constructed so as to be able to expel into the diaper to simulate actual use. The test liquid is a 1.59 percent saline containing red dye. The test solution is poured through the diaper doll in 90-millimeter increments, with an interval of ten minutes in increments. The test is suspended at the first indication of liquid spillage out of the diaper. The test is performed with the doll placed on an underpad of known weight so that the amount of spilled fluid can be determined. The diapers and reinforcing dressings are also weighed before and after the tests in order to be able to determine amount of fluid absorbed by the diaper or dressing.

- 6 -

PAINTING

I II III HAVING CHJMAÇO I think DIAPER DIAPER INTERIOR REINFORCEMENT TESTED GRA.AS GRAKAS TESTED Diaper Net weight 209.67 17.03 Commercial Dry weight 37.67 10.05 Total increase of weight 172.00 6.98 Diaper Net weight 202.00 27.56 Revoo Commercial Dry weight 38.07 10.02 Diaper Total increase ----- "Doublers" of weight 163.93 17.54

Diaper Net weight 237.90 16.11 Article Commercial Dry weight 37.15 10.04 Absorbent Increase total Help of weight 200.75 6.07

- 7 IR

V

SAW

REINFORCEMENT GRAMAS INTRODUCED FLUID CAPACITY 180 CC 164.92 grs 106.0 17.25 270 CC 88.75 235.2 grs 73.5 9.0 270 CC 64.5 259.15 grs

As can be seen from the table, the auxiliary absorbent article of the present invention increases the overall absorbent capacity of the diaper indicated in the last column of the table. As can also be seen in column I, flow through the possibilities of the auxiliary absorbent article of the present invention, allows the absorbent article underneath or to the diaper to achieve its full absorbency which contrasts with the conventional reinforcing dressings which absorb immediately and prevent the diaper below its full absorption capacity.

Although the superabsorbent layer in the above-described auxiliary absorbent article includes two layers of Akucell structure, other commercially available products may be used to form the superabsorbent layer, such as the Henkel superabsorbent fibrous layer and the Dow Ao laminate. absorbent article of the present invention, it is only necessary that the superabsorbent material be well dispersed so that the fluid passes through the auxiliary absorbent article in the initial web.

Figure 3 shows a schematic representation of the observation made by testing the commercial Revco Diaper Doublers in conjunction with the commercial diaper, and their results are shown in the table. In figure 3, the commercial diaper is represented at 50 and the Revco Diaper Doubler in When the reinforcing napkin and diaper were observed after the introduction and absorption of each increment of fluid, it was noted that the fluid 55 was absorbed by the reinforcing bandage and, by twisting, displaced therethrough as shown the arrow. It is to be assumed that the fluid is absorbed by the diaper from the lower surface of the dressing.

The absorption dynamics of the reinforcing napkin and the diaper can be contrasted with that observed with the auxiliary absorbent article of the present invention and the diaper 8-

4 is shown schematically in Figure 4. In Figure 4, the commercially available diaper is shown at 54 and the auxiliary absorbent article is shown generally at 56. As has been seen in connection with the use of the auxiliary absorbent article according to the present In the present invention, the initial wetting area 58 in Figure 4 remained small. While the initial wet area remained small, it was noted that the fluid was rapidly absorbed and twisted by the bottom. It was also found that as time elapsed the fluid was re-absorbed by the auxiliary absorbent article as shown by the arrows, thereby making use of the absorbent capacity of the auxiliary absorbent article in the area 60 away from the initial wetting of the auxiliary absorbent article. These observations are in accordance with the results obtained in the test indicating that with the use of the auxiliary absorbent article according to the present invention, the total absorbability of the diaper underneath is used. However, with the use of the Revco dressing, the overall absorbability of the diaper underneath is not achieved,

Figure 5 schematically illustrates a preferred constructive variant of the auxiliary absorbent article according to the present invention. In Figure 5, the diaper is shown at 70 and the T-shaped auxiliary absorbent article disposed in a diaper at 72 or alternatively at 74. In this particular constructive variant, the article is given shape which maximizes the absorbent capacity for use as a diaper of child (male or female). The orientation of the diaper is shown by the location of the ribbon tabs 76 along the portion of the back ribbon, as is common in commercial diapers. When the auxiliary absorbent article is disposed in the diaper as at 72, it provides a maximum strength absorbing capacity for use with a female child. When the auxiliary absorbent article is disposed as shown at 74, the maximum strength absorbing capacity is obtained when the diaper and the auxiliary absorbent article are used by a male child. Disposable T-shaped diapers are disclosed in U.S. Patent 3,768,479.

The foregoing description and drawings are illustrative but should not be construed as limiting. Other variants and modifications are possible without departing from the spirit and scope of the present invention.

Claims (1)

REIVINDICAÇÕES - 15 Artigo absorvente auxiliar para utilização cg mo topo de um artigo absorvente primário tendo uma capacidade de absorção e uma capacidade de efeito de torcida, melhorando o referido artigo absorvente auxiliar a capacidade de absorção do artigo absorvente primário, caracterizado por o referido artigo absorvente auxiliar compreender uma camada superabsorvente, uma camada de face superior e uma camada de face inferi or, compreendendo a referida camada superabsorvente um material superabsorvente disperso numa matriz de forma que o fluido passe através do referido artigo absorvente auxiliar e possa ser absorvido pelo artigo absorvente primário, sujeito a efeito de torcida ao longo da superfície inferior do artigo absorvente auxiliar, e absorvido em regiões remotas da molhagem ini ciai do artigo absorvente auxiliar.An auxiliary absorbent article for use as the top of a primary absorbent article having an absorbent capacity and a twisting ability, said auxiliary absorbent article improving the absorbability of the primary absorbent article, characterized in that said auxiliary absorbent article comprising a superabsorbent layer dispersed in a matrix so that the fluid passes through said auxiliary absorbent article and can be absorbed by the primary absorbent article, subjected to twisting along the lower surface of the auxiliary absorbent article, and absorbed in remote regions of the initial wetting of the auxiliary absorbent article. - 10 Artigo absorvente de acordo com a reivindica· ção 1, caracterizado por ter uma forma de T.An absorbent article according to claim 1, characterized in that it has a T shape. Artigo absorvente de acordo com a reivindicação 1, caracterizado por compreender adesivo intermitente sobre a sua superfície inferior para fixação ao artigo absorvente pri mário.An absorbent article according to claim 1, characterized in that it comprises intermittent adhesive on its lower surface for attachment to the primary absorbent article. Artigo absorvente de acordo com a reivindicação 3, caracterizado por a referida camada superabsorvente compreender um material superabsorvente numa camada de tecido.An absorbent article according to claim 3, characterized in that said superabsorbent layer comprises a superabsorbent material in a fabric layer. Artigo absorvente de acordo com a reivindicação 3, caracterizado por a referida camada de face envolver a referida camada absorvente e formar a superfície inferior do artigo absorvente auxiliar.An absorbent article according to claim 3, characterized in that said face layer surrounds said absorbent layer and forms the lower surface of the auxiliary absorbent article. - 11 - 6® Conjunto de artigo absorvente primário e de artigo absorvente auxiliar, contribuindo o referido artigo absorvente auxiliar para a capacidade absorvente global do conjunto sem interferir com as características de absorção do artigo absorvente primário, caracterizado por o artigo absorvente primário ter capacidade de absorção e capacidade de absorção e capacidade de efeito de torcida, e por o artigo absorvente auxiliar compreender uma camada de face superior, uma camada superabsorvente e uma superfície inferior em justaposição com o artigo absorvente primário, compreendendo a referida camada superabsorvente um material superabsorvente disperso numa matriz de tal forma que passe fluido através das referidas camadas absorventes de face e superabsorvente e seja absorvida pelo artigo absorvente primário, e passe por efeito de torcida ao longo da sua superfície inferior e seja absorvido em regiões afastadas do ponto de molhagem inicial do artigo absorvente auxiliar.A primary absorbent article article and an auxiliary absorbent article, said auxiliary absorbent article contributing to the overall absorbent capacity of the assembly without interfering with the absorbent characteristics of the primary absorbent article, characterized in that the primary absorbent article has the ability to absorbency and absorbency and twisting ability, and that the auxiliary absorbent article comprises an upper face layer, a superabsorbent layer and a lower surface in juxtaposition with the primary absorbent article, said superabsorbent layer comprising a superabsorbent material dispersed in a so that fluid passes through said absorbent face and superabsorbent layers and is absorbed by the primary absorbent article, and twisting along its lower surface and is absorbed in regions remote from the initial wetting point of the absorbent article Assists r. A requerente declara que o primeiro pedido desta patente foi depositado nos Estados Unidos da América em 10 de Agosto de 1983, sob o número de série 521,818.The Applicant declares that the first application of this patent was filed in the United States of America on August 10, 1983, under serial number 521,818.
PT7904184A 1983-08-10 1984-08-08 Auxiliary absorbent article PT79041B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US52181883A 1983-08-10 1983-08-10

Publications (2)

Publication Number Publication Date
PT79041A PT79041A (en) 1984-09-01
PT79041B true PT79041B (en) 1986-09-08

Family

ID=24078293

Family Applications (1)

Application Number Title Priority Date Filing Date
PT7904184A PT79041B (en) 1983-08-10 1984-08-08 Auxiliary absorbent article

Country Status (6)

Country Link
AU (1) AU571253B2 (en)
BR (1) BR8403866A (en)
GB (1) GB2144995B (en)
PH (1) PH26452A (en)
PT (1) PT79041B (en)
SG (1) SG29287G (en)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1260202A (en) 1984-04-13 1989-09-26 Leo J. Bernardin Absorbent structure designed for absorbing body fluids
US5176668A (en) 1984-04-13 1993-01-05 Kimberly-Clark Corporation Absorbent structure designed for absorbing body fluids
JPH0751142B2 (en) * 1985-07-31 1995-06-05 メ−ルンリユ−ケ・ア−ベ− Absorber for disposable articles such as diapers and sanitary napkins
FR2589047B1 (en) * 1985-10-25 1990-08-31 Boisson Claire DISPOSABLE ABSORBENT LAYERS WITH FIXED AREA OF REINFORCED ABSORPTION, DIFFERENTIATED ACCORDING TO CARRIER SEX
FR2627080B1 (en) * 1988-02-17 1997-04-11 Celatose Sa HIGH ABSORBENT PANTY LAYER
US4901714A (en) * 1988-09-09 1990-02-20 E. R. Squibb & Sons, Inc. Bandage
FR2656794A1 (en) * 1990-01-05 1991-07-12 Peaudouce Sa Diaper with an improved absorbent pad
US5057096A (en) * 1990-06-21 1991-10-15 Faglione Frances M Genital-vulva pad sanitary napkin construction
US4994037A (en) 1990-07-09 1991-02-19 Kimberly-Clark Corporation Absorbent structure designed for absorbing body fluids
US5462537A (en) * 1991-07-31 1995-10-31 Kimberly-Clark Corporation Absorbent article with inversely related gradients
US5219341A (en) * 1991-12-20 1993-06-15 Kimberly-Clark Corporation Sanitary napkin with a faster transverse wicking absorbent layer to indicate the approach of maximum fluid capacity
JP3012423B2 (en) * 1993-03-05 2000-02-21 ユニ・チャーム株式会社 Disposable diapers
SE507964C2 (en) * 1993-10-07 1998-08-03 Moelnlycke Ab Sanitary towels or similar absorbent article
US5460624A (en) * 1994-05-02 1995-10-24 The Procter & Gamble Company Sanitary napkin
DK0767644T3 (en) * 1994-04-29 2002-03-18 Mcneil Ppc Inc Multilayer absorbent products
JPH10513135A (en) * 1995-01-24 1998-12-15 ザ、プロクター、エンド、ギャンブル、カンパニー Packaging containing absorbent articles
ES2174060T3 (en) * 1995-03-21 2002-11-01 Procter & Gamble PACKAGE CONTAINING ABSORBENT ITEMS AND INSERTION PIECES.
ATE324093T1 (en) * 1997-06-25 2006-05-15 Procter & Gamble DUAL LAYER ABSORBENT INSERT CORE WITH IMPROVED LIQUID HANDLING
WO2005072670A2 (en) * 2003-11-18 2005-08-11 Tamicare Ltd. Means to secure and align absorbent products and maintain fresh feeling for users
AU2009101111B4 (en) * 2009-11-02 2012-01-19 White, Helen Rachael After Sex Seimen Pad & Wipe
AU2022280533A1 (en) * 2021-05-27 2023-11-02 Modibodi Australia Pty Ltd Quick drying moisture management pant

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4501587A (en) * 1982-09-30 1985-02-26 Kimberly-Clark Corporation Disposable diaper having improved absorbent pad arrangement
US4539981A (en) * 1982-11-08 1985-09-10 Johnson & Johnson Products, Inc. Absorbable bone fixation device
US4537590A (en) * 1982-11-08 1985-08-27 Personal Products Company Superthin absorbent product

Also Published As

Publication number Publication date
BR8403866A (en) 1985-07-09
PT79041A (en) 1984-09-01
PH26452A (en) 1992-07-15
SG29287G (en) 1987-07-17
GB8420269D0 (en) 1984-09-12
AU571253B2 (en) 1988-04-14
GB2144995A (en) 1985-03-20
GB2144995B (en) 1987-01-21
AU3176484A (en) 1985-02-14

Similar Documents

Publication Publication Date Title
PT79041B (en) Auxiliary absorbent article
US4938756A (en) Auxiliary absorbent article
US5366451A (en) Disposable absorbent product
EP0254476B1 (en) High density absorbent members having lower density and lower basis weight acquisition zones and absorbent cores and articles incorporating such members
RU2248810C2 (en) Intensifier for liquid absorption
US3592194A (en) Diaper having improved wicking and dryness
US5047023A (en) Absorbent members having low density and basis weight acquisition zones
US5853402A (en) Absorbent article having a composite absorbent core
US4259387A (en) Absorbent fibrous structure
US5788684A (en) Liquid-absorbing article
US4324247A (en) Disposable absorbent article having an absorbent core and a topsheet
US5803920A (en) Thin absorbent article
US5425725A (en) Absorbent article which includes superabsorbent material and hydrophilic fibers located in discrete pockets
US5433715A (en) Absorbent article which includes superabsorbent material located in discrete pockets having water-sensitive and water-insensitive containment structures
JP3583423B2 (en) Multilayer absorbent composite
US5021050A (en) Absorbent panel structure
JP3466185B2 (en) Absorbent product with packaged multi-layer absorbent body that absorbs liquid quickly
US5873867A (en) Absorbent with half section of gelling material
EP0325416A2 (en) Absorbent members having low density and basis weight acquisition zones and absorbent articles incorporating such members
US4327729A (en) Low-density disposable absorbent bandage having low stretch, wet strength center ply to provide improved pad integrity in use
JPH0595973A (en) Thin sanitary napkin having central absorbing area and method for its production
US6103952A (en) Absorbent article
AU707181B2 (en) Absorbent article having a cushioning member and a barrier
US5868725A (en) Absorbent article having a cushioning member and a barrier
CA2194364C (en) Absorbent article

Legal Events

Date Code Title Description
MM3A Annulment or lapse

Free format text: LAPSE DUE TO NON-PAYMENT OF FEES

Effective date: 19920309