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WO1993016670A1 - Materiau de recouvrement d'une surface pour un produit d'absorption - Google Patents

Materiau de recouvrement d'une surface pour un produit d'absorption Download PDF

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Publication number
WO1993016670A1
WO1993016670A1 PCT/US1993/001540 US9301540W WO9316670A1 WO 1993016670 A1 WO1993016670 A1 WO 1993016670A1 US 9301540 W US9301540 W US 9301540W WO 9316670 A1 WO9316670 A1 WO 9316670A1
Authority
WO
WIPO (PCT)
Prior art keywords
nonwoven fabric
chitosan
fibers
covering material
sheet
Prior art date
Application number
PCT/US1993/001540
Other languages
English (en)
Inventor
Migaku Suzuki
Original Assignee
Mcneil, Ppc, Inc.
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 Mcneil, Ppc, Inc. filed Critical Mcneil, Ppc, Inc.
Publication of WO1993016670A1 publication Critical patent/WO1993016670A1/fr

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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
    • A61F13/51—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 of the pads
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • A61F13/512—Topsheet, i.e. the permeable cover or layer facing the skin characterised by its apertures, e.g. perforations
    • 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 of the pads
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • A61F13/51113—Topsheet, i.e. the permeable cover or layer facing the skin comprising an additive, e.g. lotion or odour control
    • 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 of the pads
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • A61F13/513—Topsheet, i.e. the permeable cover or layer facing the skin characterised by its function or properties, e.g. stretchability, breathability, rewet, visual effect; having areas of different permeability
    • A61F13/51305—Topsheet, i.e. the permeable cover or layer facing the skin characterised by its function or properties, e.g. stretchability, breathability, rewet, visual effect; having areas of different permeability having areas of different permeability
    • 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
    • A61F13/84—Accessories, not otherwise provided for, for absorbent pads
    • A61F13/8405—Additives, e.g. for odour, disinfectant or pH control
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/425—Cellulose series
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4266—Natural fibres not provided for in group D04H1/425
    • 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 of the pads
    • 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 of the pads
    • 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 of the pads with special fibres
    • A61F2013/51019—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 of the pads with special fibres being cellulosic material
    • A61F2013/51021—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 of the pads with special fibres being cellulosic material being chemically modified
    • 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 of the pads
    • 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 of the pads 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 of the pads with special fibres being a mixture of 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 of the pads
    • 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 of the pads 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 of the pads with special fibres being a mixture of fibres
    • A61F2013/51057—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 of the pads with special fibres being a mixture of fibres having different ratio of fibres

Definitions

  • This invention relates to a surface covering for diapers and sanitary napkins for children and adults and to an absorbent product for hygienic use in which it is used.
  • This application incorporates by reference its Japanese counterpart application, Serial No. 6408 filed February 21, 1992.
  • Covering materials for absorbent products such as diapers and sanitary napkins, which are made permeable to fluids by making pores in hydrophobic fiber materials such as polyethylene and polypropylene and by subjecting them to treatment with penetrating agents but which have so-called dry-keeping characteristics that prevent swelling of the fibers by water have been used conventionally as covering materials for diapers and napkins.
  • these materials may be allergenic to persons and children having allergic predispositions of which atopic dermatitis is representative.
  • the structural fiber materials or sheets thereof are subjected to a surface treatment with an antibacterial substance.
  • antibacterial agents such as organic sulfur systems, organic nitrogen systems and organic phosphoric acid systems are used industrially for this purpose.
  • cellulose material such as rayon and cotton are treated by these means, partial dispersion readily tends to occur.
  • skin damage and allergenic skin reactions readily tend to occur. Thus they are extremely dangerous for use in baby products and sanitary products.
  • the antibacterial agents that are used for this objective are absorbed and occluded in inorganic porous materials such as zeolite and apatite. They are called, respectively, zeolite Ag (silver) carrier, zeolite Cu (copper) carriers and zeolite Zu carriers or apatite Ag carriers, apatite Cu carriers and apatite Zu carriers.
  • zeolite Ag silver
  • zeolite Cu copper
  • Zu carriers zeolite Zu carriers
  • apatite Ag carriers apatite Cu carriers and apatite Zu carriers.
  • This invention has the objectives of making possible the substantial prevention of diaper rash by providing a surface- covering material for hygienic articles of a new structure and by preventing propagation of bacteria that give rise to dermatitis during wear and use. Furthermore, the, products of this invention make possible decomposition by microorganisms in the natural world and safe treatment by natural cycles during composing treatment or burial in the earth when discarded.
  • the inventors discovered the fact that the products of this invention may be made using two processes are executed simultaneously: (a) a material that is effective and safe and that has a protective effect on the skin is caused to be present together with cellulose fibers to eliminate the drawbacks of cellulose, for example, processing being performed to endow the cellulose fibers with anti-bacterial activity, and (b) a shaping device is used to keep the area of contact with the skin as small as possible. In this way, a product that is gentle to the skin and kind to the environment is provided.
  • Figure 1 is an electron micrograph showing the configuration of addition of chitosan to viscose fibers.
  • Figure 2 is a flow chart of the process of manufacture rayon fibers to which chitosan is added.
  • Figure 3 is a flow chart of the process of manufacture by addition of chitosan to rayon fibers in the solution spinning method.
  • Figure 4 is a flow chart of the process of manufacture by addition of chitosan to nonwoven fabric obtained by the viscose method.
  • Figure 5 is a schematic diagram of an example of the configuration of the portion containing apertures of a surface coating material.
  • Figure 6 is a schematic diagram of another example of the configuration of the portion containing apertures of a surface coating material.
  • Figure 7 is a schematic diagram of another example of the configuration of the portion containing apertures of a surface coating material.
  • Figure 8 is a schematic diagram of another example of the configuration of the portion containing apertures of a surface coating material.
  • Figure 9 is a schematic diagram of another example of the configuration of the portion containing apertures of a surface coating material.
  • Figure 10 is a schematic diagram of an example of the structure when the covering material of this invention was used in the sweet spot.
  • Figure 11 is a schematic diagram of an example of another structure when the covering material of this invention was used in the sweet spot.
  • Figure 12 is a schematic diagram of an example of another structure when the covering material of this invention was use din the sweet spot.
  • Figure 13 is a schematic diagram of an example of another structure when the covering of this invention was used in the sweet spot.
  • Figure 14 is a schematic diagram of an example of another structure when there covering material of this invention as used in the sweet spot.
  • Figure 15 is a schematic diagram of an example of another structure when the covering material of this invention was used in the sweet spot.
  • Figure 16 is a schematic diagram of an example of another structure when the covering material of this invention was used in the sweet spot.
  • Figure 17 is a schematic diagram of an example of another structure when the covering material of this invention was used in the sweet spot.
  • Figure 18 is a schematic diagram of an example in which the covering material of this invention was overlayed in the bottom layer of a nonwoven fabric.
  • Figure 19 is a schematic diagram of an example in which the covering material of this invention was overlayed in the top layer of a nonwoven fabric.
  • this invention relates to a surface covering material for hygienic products characterized in that its principal component consists of composite fibers of chitosan and cellulose that have antibacterial activity and in that it is constructed using a sheet-like material constructed so that 40 to 90% of it consists of portions containing apertures and is an absorbent product for hygienic use characterized in that it is constructed using a surface covering material comprised of this sheet-like material as a sweet zone for 80 to 20% of the total required covering area of the product surface.
  • the proportion of portions containing apertures in the aforementioned sheet-like material should be 55 to 80% and the desirable range of the sweat zone should be 60 to 40%.
  • the chitosan that is used as the antibacterial agent in this invention is obtained by finely pulverizing natural mucopolysaccharide. It has been confirmed nhat composite fibers can be manufactured without deterioration of chitosan activity even when impurities are present when this agent is blended and spun in cellulose polymer solutions by the viscose method or in cellulose solutions of amine oxides. A partial marketing state has been achieved. (For example, "Chitopoly” and “Chitosel” manufactured by the Fuji Spinning Company).
  • Chitosan is widely present in the natural world as a mucopolysaccharide and as a complex with proteins in Crustacea, insects and various fungi. Because of its affinity for body tissues, it is used in large quantities in food products and cosmetics. Chitosan exhibits antibacterial effects because of its glycocyamine structure. Table 1 shows the antibacterial effects of chitosan when added in amount of 1000 ppm.
  • Figure 1 is an electron micrograph showing the state of addition of chitosan to viscose fibers. The white areas are chitosan.
  • Table 2 shows the resistance to washing strength when Chitopoly was applied to various uses. Nonwoven fabrics were discontinued because washing resistance was not necessary.
  • Composite fibers of chitosan and cellulose having the aforementioned functions and sheet-like materials thereof can be manufactured by the following methods.
  • chitosan is added to viscose and spun in the process of manufacturing viscose rayon fibers.
  • the fibers that are obtained in this way (a) are formed into webs by the carding method and nonwoven fabric is manufactured by intertwining them by means of a high pressure water flow.
  • Yarn is made from the fibers obtained by a spinning process and the yarn is processed to knit products and textiles.
  • chitosan is added to an amine oxide solution in the process of manufacturing rayon fibers by the solution spinning method.
  • the fibers that are obtained (a) are formed into webs by the carding method and a nonwoven fabric is manufactured by
  • Yarn is made by subjecting the fibers that are obtained to a spinning process and the yarn is processed to knit products and textiles.
  • the sheet-like material comprised of chitosan compounded with cellulose fibers obtained in this way is made into a surface covering material as follows. As described above, it is important to devise a method for decreasing the area of contact with the skin, and, in particular, the area of contact in local regions of excretion, in order to achieve a greater effectiveness as a surface covering material. The following are two methods that can be used to achieve this purpose.
  • the aperture ratio can be expressed as AP/TA x 100 (%).
  • the aperture ratio should be greater than about 40%, preferably, about 50 to about 90%, and, more preferably, about 55 to about 80%. Textures in which the aperture ratio exceeds about 90% are difficult to manufacture industrially. When it is less than about 40%, effective absorption is difficult to obtain.
  • a method that is effective for making these configurations in the case of nonwoven fabrics is a method in which treatment is carried out on a roller with a high pressure water flow by the so-called spun lace method so that the aperture portions or the aperture portions and the projecting portions are both present.
  • spun lace method so that the aperture portions or the aperture portions and the projecting portions are both present.
  • Fibers exhibiting fusibility at low temperatures such as PE/PP, which has heat setting capacity, with cellulose fibers compounded with chitosan, milling the mixture and then subjecting it to heat setting to effect thermosetting of the contact point among the fibers are effective for stabilizing the texture of nonwoven fabric and knit fabrics.
  • the second method of making the material of this invention is a method in which the material is concentrated solely in the portion requiring antibacterial activity (the so- called sweet zone) and in which it is used in combination with nonwoven fabric to a conventional degree in the other region for the purpose of maintaining a balance between the overall dry-keeping capacity and antibacterial capacity. Examples of this method are shown in Figure 10 through Figure 17.
  • the region Q in the figures is the region conventionally used. Nonwoven fabric having so- called dry-keeping capacity should be used for PP nonwoven fabrics that are thermally bonded or spun bonded.
  • use of Q portions only is effective as substitutes for the P portions on the surface of the absorbent element. In this case, it is necessary to treat the upper surface of the absorbent element to serve as a surface covering material.
  • the Q portions are constructed taking into consideration the properties of the discharged material such as urine, feces or blood, the region of discharge, sex and body shape.
  • P + Q T (total surface area of the covering material)
  • Q/T x 100 should equal about 80 to about 20%, and, preferably, about 60 to about 40%. When it exceeds about 80%, the significance of the sweet zone is diminished. When it is less than about 20%, a sufficient sweet zone area cannot be formed.
  • the sweet zone which forms the Q portion can be present together in the same plane as described previously. Arrangements are also possible in which there is superimposition on a bottom layer as shown in Figure 18 and in which there is superimposition on a top layer as shown in Figure 19.
  • This invention is constituted by combination of the aforementioned two methods. Specifically, in this invention, a surface covering material is formed in a state in which composite fibers of chitosan and cellulose formed in sheets having an aperture structure as shown in Figure 5 through Figure 9 are distributed so as to form a sweet zone in portions as shown in Figure 10 through Figure 17, this material being used to obtain new absorbent products for hygienic use such as sanitary napkins and diapers that result in little skin rash.
  • CS 2 was reacted with alkaline cellulose following the process shown in Figure 3, with a so-called viscose consisting of an aqueous solution of cellulose xanthate being formed.
  • a dispersed solution of finely powdered chitosan making up a master batch was added to this viscose to make a viscose containing 4% of chitosan relative to this viscose.
  • the viscose composition consisted of 6.3% of cellulose and 4% of alkali and its xanthate titer was 60%. This viscose was defoamed and filtered, after which it was spun into H 2 HO 4 , ZnSO 4 and
  • the following bacterial tests were performed using the aforementioned nonwoven fabric. Specifically, the aforementioned nonwoven fabric was cut into circular pieces of 3 cm in diameter which were placed on an agar culture medium. A nonwoven fabric comprised of ordinary rayon fibers that had been intertwined by means of a similar high pressure water flow was cut into circular pieces of 3 cm in diameter and used a blank. High pressure steam sterilization was then performed. After sterilization, Staphylococcus aureus was inoculated onto the nonwoven fabric, after which the materials were cultured for one week in a constant temperature tank at 40°C. When this was done, growth of colonies was seen over the satire surface of the blank. However, almost no difference whatsoever was seen in the nonwoven fabric of this example by comparison to the time of inoculation. 3. Processing to Diapers
  • Nonwoven fabric having the aforementioned properties was used as a covering material for children's diapers and its properties were compared.
  • porous nonwoven fabric of this invention P thermally bonded
  • a viscose containing chitosan was prepared following the process shown in Figure 5.
  • the viscose composition was prepared following the process shown in Figure 5.
  • This tow was dispersed into a large volume of water while being cut to pieces of 10 m/m, a fiber mat was formed by the wet method, partial fusion was effected with an embossing roller and the bonded sheet that was obtained was subjected to shrinking and regeneration treatment in an acidic bath. Following that, it, was subjected to. desulfuration, bleaching, water washing and drying, with a continuous nonwoven fabric shoot being obtained.
  • This sheet was made by processing with TCF, a brand name manufactured by Nimura Chemical. This sheet was guided onto a 16 mesh plastic net and was treated in a high pressure water flow (30 kg/cm 2 ) using a two-stage nozzle. When it was dried, a nonwoven fabric having an aperture configuration as shown in Figure. 7 was obtained. The aperture area ratio was approximately 52%.
  • Antibacterial tests were conducted using the nonwoven fabric obtained as described above. Klebsiella pneumoniae was selected as the bacterial strain and culture tests were conducted by the shake culture methock using a liquid culture medium. Specifically, samples of the aforementioned nonwoven fabric (blanks) that had been washed once, washed twice and washed three times were used as test samples. Each test sample was cut into a fine strip, amounts of 1 g were introduced into a flask containing liquid culture medium and high pressure steam sterilization treatment was carried out, after which the aforementioned bacterium was inoculated and shake culture was carried out in a constant temperature tank at 38°C for one week. The MIC value (ppm) of the blank was 60 ppm. The chitosan concentration in the test sample was equivalent to 200 ppm and essentially no growth of bacteria was observed. Table 5 shows a comparison of the antibacterial level of the other test samples when the blank was taken as 100%.
  • the aforementioned porous nonwoven fabric was subjected to water repellency treatment only on its surface with a Teflon spray.
  • Diaper samples were prepared in the configuration shown in Figure 12 nsing this nonwoven fabric, with a thermally bonded nonwoven fabric being used for the P portion, with the product of the exmaple being used for the Q portion and with the surface portion of a commercial Pampers being removed. Rubbing tests were performed and the properties were evaluated.
  • a thermally bonded nonwoven fabric as shown in Table 6 was used in a commercial, diaper as a blank adn comparisons were made with the product of this invention.
  • the product of this invention exhibited a rapid permeation speed.
  • the re-wet value was not greatly different from that of the polypropylene nonwoven fabric.
  • the aforementioned nonwoven fabric was used overlaid on a commercial nonwoven fabric as shown in Figure 19 in the pattern shown in Figure 14.
  • the nonwoven fabric corresponding to P was 18 g/m of spun bonded polypropylene (hydrophilic processing) and Q was the material obtained in the example. The area ratio of Q was approximately 30%.
  • Comparison tests with the product of this invention were carried out using a commercial size M diaper from which the surface material had been removed as the diaper sample and a spun bonded material was employed as the blank. The results are shown in Table 7.
  • This invention makes it possible to prevent so-called diaper' rash by providing a surface covering material for hygienic products having a new structure, by use of this material in diapers and by preventing propagation of bacteria that cause dermatitis during wear and use, and, at the same time, it makes possible safe treatment at the time of discard by natural cycle systems as a result of decomposition by microorganisms in the natural world during composting treatment or burial treatment in the earth.

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

Abstract

Cette invention concerne une couverture de surface (Q) pour des couches-culottes (P) et des serviettes hygiéniques pour enfants et adultes ainsi qu'un produit absorbant pour les soins corporels et hygiéniques et qui contient du chitosan et de la cellulose et qui présente une activité antibactérienne.
PCT/US1993/001540 1992-02-21 1993-02-22 Materiau de recouvrement d'une surface pour un produit d'absorption WO1993016670A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP4035402A JP3018304B2 (ja) 1992-02-21 1992-02-21 衛生用吸収体製品
JP35402 1992-02-21

Publications (1)

Publication Number Publication Date
WO1993016670A1 true WO1993016670A1 (fr) 1993-09-02

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PCT/US1993/001540 WO1993016670A1 (fr) 1992-02-21 1993-02-22 Materiau de recouvrement d'une surface pour un produit d'absorption

Country Status (3)

Country Link
JP (1) JP3018304B2 (fr)
AU (1) AU3727693A (fr)
WO (1) WO1993016670A1 (fr)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USH1732H (en) * 1994-03-10 1998-06-02 Johnson; Theresa Louise Absorbent articles containing antibacterial agents in the topsheet for odor control
US6149934A (en) * 1999-04-23 2000-11-21 Kimberly-Clark Worldwide, Inc. Absorbent article having a lotionized bodyside liner
EP0919213A3 (fr) * 1997-11-28 2001-04-25 Uni-Charm Corporation Couche-culotte d'apprentissage jetable
US6749860B2 (en) 2000-12-22 2004-06-15 Kimberly-Clark Worldwide, Inc. Absorbent articles with non-aqueous compositions containing botanicals
US6756520B1 (en) 2000-10-20 2004-06-29 Kimberly-Clark Worldwide, Inc. Hydrophilic compositions for use on absorbent articles to enhance skin barrier
KR100839714B1 (ko) * 2000-05-26 2008-06-19 킴벌리-클라크 월드와이드, 인크. 월경분비물 특이적 흡수 시스템
US7771735B2 (en) 2000-12-22 2010-08-10 Kimberly-Clark Worldwide, Inc. Absorbent articles with compositions for reducing irritation response
EP1082149B2 (fr) † 1998-05-29 2011-12-14 Kimberly-Clark Worldwide, Inc. Meilleure absorption des odeurs par des polymeres naturels et de synthese
US8211078B2 (en) 2005-02-17 2012-07-03 The Procter And Gamble Company Sanitary napkins capable of taking complex three-dimensional shape in use
US9579238B2 (en) 2005-02-17 2017-02-28 The Procter & Gamble Company Sanitary napkins capable of taking complex three-dimensional shape in use
CN108175580A (zh) * 2018-01-12 2018-06-19 湖北儿医坊科技有限公司 一种具有抑菌功能的经期内裤
CN114748248A (zh) * 2018-06-29 2022-07-15 尤妮佳股份有限公司 吸收性物品

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KR20000072014A (ko) * 2000-06-28 2000-12-05 김수현 항균, 방취 면가루 제조 및 표면처리 방법
US7067711B2 (en) 2002-12-05 2006-06-27 Uni-Charm Corporation Elongated absorbent article
JP4198978B2 (ja) * 2002-12-05 2008-12-17 ユニ・チャーム株式会社 縦長の吸収性物品
KR100791039B1 (ko) * 2006-07-28 2008-01-03 (재)대구경북과학기술연구원 상처드레싱용 항산화제 함유 나노섬유 부직포 및 그제조방법
KR100749966B1 (ko) * 2006-09-06 2007-08-16 주식회사 코오롱 항균성 공기필터재
CN101914838A (zh) * 2010-06-28 2010-12-15 北京大源非织造有限公司 一种新型非织造布
JP7534845B2 (ja) * 2019-09-27 2024-08-15 大王製紙株式会社 吸収性物品

Citations (2)

* Cited by examiner, † Cited by third party
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US5011864A (en) * 1989-11-09 1991-04-30 Hoechst Celanese Corp. Water absorbent latex polymer foams containing chitosan (chitin)
US5173521A (en) * 1990-06-19 1992-12-22 Mishima Paper Co., Ltd. Absorbent fibrous structure and producing method thereof

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3118722U (ja) 2005-11-21 2006-02-02 株式会社スクラム 点滴および輸血時のチューブ針の抜出し防止装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5011864A (en) * 1989-11-09 1991-04-30 Hoechst Celanese Corp. Water absorbent latex polymer foams containing chitosan (chitin)
US5173521A (en) * 1990-06-19 1992-12-22 Mishima Paper Co., Ltd. Absorbent fibrous structure and producing method thereof

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USH1732H (en) * 1994-03-10 1998-06-02 Johnson; Theresa Louise Absorbent articles containing antibacterial agents in the topsheet for odor control
EP0919213A3 (fr) * 1997-11-28 2001-04-25 Uni-Charm Corporation Couche-culotte d'apprentissage jetable
EP1082149B2 (fr) † 1998-05-29 2011-12-14 Kimberly-Clark Worldwide, Inc. Meilleure absorption des odeurs par des polymeres naturels et de synthese
US6149934A (en) * 1999-04-23 2000-11-21 Kimberly-Clark Worldwide, Inc. Absorbent article having a lotionized bodyside liner
KR100839714B1 (ko) * 2000-05-26 2008-06-19 킴벌리-클라크 월드와이드, 인크. 월경분비물 특이적 흡수 시스템
US6756520B1 (en) 2000-10-20 2004-06-29 Kimberly-Clark Worldwide, Inc. Hydrophilic compositions for use on absorbent articles to enhance skin barrier
US7771735B2 (en) 2000-12-22 2010-08-10 Kimberly-Clark Worldwide, Inc. Absorbent articles with compositions for reducing irritation response
US6749860B2 (en) 2000-12-22 2004-06-15 Kimberly-Clark Worldwide, Inc. Absorbent articles with non-aqueous compositions containing botanicals
US8211078B2 (en) 2005-02-17 2012-07-03 The Procter And Gamble Company Sanitary napkins capable of taking complex three-dimensional shape in use
US8702668B2 (en) 2005-02-17 2014-04-22 The Procter And Gamble Company Sanitary napkins capable of taking complex three-dimensional shape in use
US9579238B2 (en) 2005-02-17 2017-02-28 The Procter & Gamble Company Sanitary napkins capable of taking complex three-dimensional shape in use
US10568781B2 (en) 2005-02-17 2020-02-25 The Procter & Gamble Company Sanitary napkins capable of taking complex three-dimensional shape in use
CN108175580A (zh) * 2018-01-12 2018-06-19 湖北儿医坊科技有限公司 一种具有抑菌功能的经期内裤
CN114748248A (zh) * 2018-06-29 2022-07-15 尤妮佳股份有限公司 吸收性物品
CN114748248B (zh) * 2018-06-29 2022-09-27 尤妮佳股份有限公司 吸收性物品

Also Published As

Publication number Publication date
JPH05228176A (ja) 1993-09-07
JP3018304B2 (ja) 2000-03-13
AU3727693A (en) 1993-09-13

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