SE433562B - Method for the manufacture of a moisture-absorbing product - Google Patents

Method for the manufacture of a moisture-absorbing product

Info

Publication number
SE433562B
SE433562B SE8105800A SE8105800A SE433562B SE 433562 B SE433562 B SE 433562B SE 8105800 A SE8105800 A SE 8105800A SE 8105800 A SE8105800 A SE 8105800A SE 433562 B SE433562 B SE 433562B
Authority
SE
Sweden
Prior art keywords
depressions
web
moisture
vacuum
highly absorbent
Prior art date
Application number
SE8105800A
Other languages
Swedish (sv)
Other versions
SE8105800L (en
Inventor
G Petersson
Original Assignee
Landstingens Inkopscentral
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 Landstingens Inkopscentral filed Critical Landstingens Inkopscentral
Priority to SE8105800A priority Critical patent/SE433562B/en
Publication of SE8105800L publication Critical patent/SE8105800L/en
Publication of SE433562B publication Critical patent/SE433562B/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
    • 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
    • A61F13/15577—Apparatus or processes for manufacturing
    • A61F13/15617—Making absorbent pads from fibres or pulverulent material with or without treatment of the 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
    • A61F13/51—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
    • A61F13/515—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 characterised by the interconnection of the topsheet and the backsheet
    • 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
    • A61F13/531—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 a homogeneous composition through the thickness of the pad
    • A61F13/532—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 a homogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad

Abstract

A method for the manufacture of a moisture-absorbing, two-sheet product comprising one sheet of a material penetrable to moisture and air, and exposing depressions distributed in a certain pattern and forming cavities between the sheets, the cavities containing a highly absorbing material 3 in comminuted form, by a web 1 of material for the first sheet being carried over a roller 5 with depressions 6 connected to a source of vacuum and being impressed in said depressions, following which the comminuted highly absorbing material 3 is brought to the web 1 and drawn into the depressions by means of the vacuum, whereby the surplus is brushed away, whereupon a second web 4 of material for the second sheet is brought by so that it covers the depressions, and is brought to fasten to the first web. <IMAGE>

Description

8105800-0 ett område som banan passerar under valsens rotation, att banan pres- sas in i fördjupningarna före eller efter inträdet i vakuumområdet, att ett finfördelat högabsorberande material tillföres de i banan bildade fördjupningarna när dessa befinner sig inom vakuumområdet, så att materialet sugs ned i och fyller fördjupningarna, att det material som ej finns i fördjupningarna därefter avlägsnas från ba- nan, t.ex. med hjälp av en mjuk borste, och att en andra bana däref- ter tillföres så att den täcker fördjupningarna och att denna fäs- tes vid den första banan för att inkapsla det högabsorberande mate- rialet i hålrum. Lämpligen fiuktas de båda banorna för att lätt kun- na fästas vid varandra genom prägling. 8105800-0 an area through which the web passes during the rotation of the roll, that the web is pressed into the depressions before or after entering the vacuum area, that a finely divided highly absorbent material is supplied to the depressions formed in the web when they are within the vacuum area, so that the material is sucked down in and fills the depressions, that the material which is not in the depressions is subsequently removed from the web, e.g. by means of a soft brush, and that a second web is then applied so that it covers the depressions and that this is attached to the first web to encapsulate the highly absorbent material in cavities. Preferably, the two webs are bent to be easily attached to each other by embossing.

I produkten som framställes enligt uppfinningen ligger således det högabsorberande materialet inkapslat i hålrum mellan de två skik- ten. Hålrummen kan fördelas på olika sätt över produkten, så att tätheten är störst där sugbehovet är störst, såsom inom mittområdet av en blöja. På detta sätt kan avsevärda besparingar av högabsorbe- rande material göras. Kuddarna i produkten kan vidare tjäna såsom luftkanaler, vilket känns behagligt mot kroppen så länge produkten är torr, och mönstret kan dessutom underlätta spridning av vätska.In the product prepared according to the invention, the highly absorbent material is thus encapsulated in cavities between the two layers. The cavities can be distributed in different ways over the product, so that the density is greatest where the need for suction is greatest, such as within the central area of a diaper. In this way, significant savings can be made from highly absorbent materials. The cushions in the product can further serve as air ducts, which feels comfortable against the body as long as the product is dry, and the pattern can also facilitate the spread of liquid.

Det högabsorberande materialet kan t.ex. utgöras av karboximetyl- cellulosa eller karboxylerad akrylpclymer. Skiktet som uppvisar fördjupningar skall vara luft- och fuktgenomsläppligt och kan t.ex. utgöras av cellvadd. Det andra skiktet kan utgöras av samma materi- al eller kan vara ett fukttätt material.The highly absorbent material can e.g. consists of carboxymethylcellulose or carboxylated acrylic polymer. The layer which has depressions must be air and moisture permeable and can e.g. consists of cell wadding. The second layer may be of the same material or may be a moisture-proof material.

Uppfinningen beskrivs i det följande närmare med hänvisning till den bifogade ritningen, varpå fig. 1 visar ett snitt genom ett alster framställt enligt uppfinningen och fig. 2 utgör en princip- skiss över en anläggning för framställning av detta alster.The invention is described in more detail below with reference to the accompanying drawing, in which Fig. 1 shows a section through an article produced according to the invention and Fig. 2 is a principle sketch of a plant for the production of this article.

Produkten består av ett fukt- och luftgenomsläppligt skikt 1 med fördjupningar 2, vilka innehåller ett högabsorberande material 3 i pulverform. Skiktet 1 är täckt av ett andra skikt 4 så att det högabsorberande materialet blir inneslutet i hålrum.The product consists of a moisture and air-permeable layer 1 with depressions 2, which contain a highly absorbent material 3 in powder form. The layer 1 is covered by a second layer 4 so that the highly absorbent material is enclosed in cavities.

Produkten framställes lämpligen på följande sätt. En bana 1 av cell- vadd fuktas och ledes över en formningsvals 5, som längs omkretsen uppvisar fördjupningar 6 i ett visst mönster. Cellvadden 1 matas fram och hålles till anliggning mot valsen med hjälp av styrvalsar 8105800-0 7 och ett transportband 8. Valsen passerar under sin rotation en vakuumzon 9. Då cellvaddbanan 1 och underliggande hâlrum i valson passerar över vakuumzonen 9 sugs cellvadden ned i fördjupningarna.The product is conveniently prepared in the following manner. A web 1 of cell wadding is moistened and passed over a forming roll 5, which along the circumference has depressions 6 in a certain pattern. The cell wadding 1 is fed and held for abutment against the roller by means of guide rollers 8105800-0 7 and a conveyor belt 8. The roll passes during its rotation a vacuum zone 9. When the cell wadding path 1 and underlying cavities in the roll zone pass over the vacuum zone 9, the cell wadding is sucked into the recesses.

För att förbättra bildningen av fördjupningar pressas samtidigt el- ler dessförinnan cellvadden ned i valsens fördjupningar med hjälp av en formningsvals med utsprång 10 motsvarande fördjupningarna 6.In order to improve the formation of depressions, at the same time or before that the cell wadding is pressed down into the depressions of the roller by means of a forming roller with projections 10 corresponding to the depressions 6.

Medan cellvaddbanan fortfarande befinner sig över vakuumzonen till- föres högabsorberande pulver eller granulat 3, t.ex. CMC, över ba- nan, varvid det nedsuges i de bildade fördjupningarna 6. överskott av pulver sopas därefter bort med hjälp av en mjuk borstvals 11, varefter, fortfarande över vakuumzonen, en andra bana 4 av cellvadd, lämpligen fuktad, ledes över den första banan och fästes vid denna med hjälp av en vibrerande präglingsvals 12. De sammanfästade cell- vaddbanorna ledes därefter bort till en avskärningsvals 13, där de kapas i lämpliga bitar.While the cellulose web is still above the vacuum zone, highly absorbent powder or granules 3 are applied, e.g. CMC, over the web, sucking into the formed depressions 6. excess powder is then swept away by means of a soft brush roller 11, after which, still over the vacuum zone, a second web 4 of cell wadding, suitably moistened, is passed over the first the web and attached to it by means of a vibrating embossing roller 12. The attached cellular cotton webs are then led away to a cutting roller 13, where they are cut into suitable pieces.

Mängden pulver i alstret kan varieras genom variering av antal för- djupningar och dessas storlek och djup. Vid försök har t.ex. 0,3 g karboximetylcellulosa/fördjupning använts. Karboximetylcellulosan har en kapacitet av 15 gånger vikten. En blöja avsedd att kunna su- ga upp 300 ml urin kan t.ex. förses med 60-70 fördjupningar inne- hållande 0,3 g karboximetylcellulosa/fördjupning.The amount of powder in the product can be varied by varying the number of depressions and their size and depth. In experiments, e.g. 0.3 g carboxymethylcellulose / well was used. The carboxymethylcellulose has a capacity of 15 times the weight. A diaper intended to be able to absorb 300 ml of urine can e.g. is provided with 60-70 wells containing 0.3 g of carboxymethylcellulose / well.

Claims (1)

1. 8105800-0 05 10 15 20 Patentkrav Förfarande för framställning av ett fuktabsorberande als- ter, som omfattar tvâ hopfästade skikt (1, 4) och däremel- lan ett i hålrum anordnat högabsorberande material (3), t ex superslurper, i finfördelad form, såsom pulver, gra- nulat eller fluff, k ä n n e t e c k n a t a v att en bana (1) av ett luft- och fuktgenomsläppligt material ledes in över en vals och hålles till anliggning mot denna under en del av dess rotationsvarv, att valsen är försedd med ett flertal fördjupningar fördelade i ett visst mönster, att fördjupningarna är i förbindelse med en vakuumkälla inom ett område som banan passerar under valsens rotation, att banan pressas in i fördjupningarna före eller efter inträ- det i vakuumomrâdet och att ett finfördelat högabsorberan- de material tillföres de i banan bildade fördjupningarna när dessa befinner sig inom vakuumområdet så att materia- let sugs ned i och fyller fördjupningarna, att det material som ej finns i fördjupningarna därefter avlägsnas från ba- nan och att en andra bana (4) därefter tillföres så att den täcker fördjupningarna och att denna fästes vid den första banan för att inkapsla det högabsorberande materialet i hålrum.A method for producing a moisture-absorbing alter, which comprises two fastened layers (1, 4) and in between a highly absorbent material (3) arranged in cavities, for example super-slurry, in finely divided form, such as powder, granules or fluff, characterized in that a web (1) of an air and moisture permeable material is guided over a roll and held in abutment therewith during a part of its rotational turns, a plurality of depressions distributed in a certain pattern, that the depressions are in communication with a vacuum source within an area which the web passes during the rotation of the roll, that the web is pressed into the depressions before or after entering the vacuum area and that a finely divided highly absorbent material is supplied the depressions formed in the web when these are within the vacuum range so that the material is sucked into and fills the depressions, that the material which is not in the depressions there fter is removed from the web and that a second web (4) is then applied so that it covers the depressions and that this is attached to the first web to encapsulate the highly absorbent material in cavities.
SE8105800A 1981-10-01 1981-10-01 Method for the manufacture of a moisture-absorbing product SE433562B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE8105800A SE433562B (en) 1981-10-01 1981-10-01 Method for the manufacture of a moisture-absorbing product

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8105800A SE433562B (en) 1981-10-01 1981-10-01 Method for the manufacture of a moisture-absorbing product

Publications (2)

Publication Number Publication Date
SE8105800L SE8105800L (en) 1983-04-02
SE433562B true SE433562B (en) 1984-06-04

Family

ID=20344676

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8105800A SE433562B (en) 1981-10-01 1981-10-01 Method for the manufacture of a moisture-absorbing product

Country Status (1)

Country Link
SE (1) SE433562B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989001325A1 (en) * 1987-08-07 1989-02-23 Landstingens Inköpscentral, Lic Absorbent pad and method and apparatus for making the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989001325A1 (en) * 1987-08-07 1989-02-23 Landstingens Inköpscentral, Lic Absorbent pad and method and apparatus for making the same
US4892535A (en) * 1987-08-07 1990-01-09 Landstingens Inkopscentral, Lic, Ekonomisk Forening Absorbent pad and method and apparatus for making the same

Also Published As

Publication number Publication date
SE8105800L (en) 1983-04-02

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