DE1910334A1 - Absorbent sanitary napkin with antibacterial properties - Google Patents

Description

The invention relates to absorbent sanitary towels to which a certain amount of antibacterial material is added, to reduce odor and the risk of infection, y ■■ "- ■".

Sanitary napkins are known which consist of several layers a soft, cotton-like, foldable, fibrous Material between which a mass or layer of: deodorant or antiseptic granules or powder is weighed * A particular example of this type of binding is in U.S. Patent 1,950,957. Sanitary pads however, these types were economically very small

909839/106 3

Success because they have some distinct drawbacks. In particular, the above patent chloramine, shall be used in. Powder or grain form and d ¹ "e wadding layers must be secured in any suitable manner to each other so that the interspersed between them material does not fall out and be spilled. In addition, μ ^ θΓβΐ ^ ζΐ a sanitary napkin constructed in this way does not in any way ensure the even distribution of body exudates over the napkin. Furthermore, the product is time-consuming and difficult to manufacture. ■. '■ "---.

US Pat. No. 2,919,200 shows that certain compounds such as "Actamer" (registered trade name for 2 _i 2-thio-bis- (4,6-phenol), manufacturer Monsanto Chemical Company) and hexachlorophene , e.g. -B-. the compound produced under the trade name "G-II" by Sindar Corporation, New York, are compatible with polyolefins or other plastics mentioned in the patent specification, and that plastics with bactericidal or bacteriostatic (here referred to as antibacterial) effect can be obtained in this way which can either completely kill the bacteria with good effect or prevent them from multiplying. · Preference is given to plastics that are flexible with no or very little added plasticizers. Other useful antibacterial substances are ζ. B. "Corobex RB" (registered trade name for fungicidally and bactericidally active organotin and phenylmercuric salts and the like, manufacturer Royce Chemical Company of Carlton Hill, New Jersey) - and bacteriostatic organotin compounds from the class of bis- (tri-n-alky ~ tin ) sulfosalicylates, as described in US patent J5 279 986. The use of such substances in the hygienic sanitary napkins according to the invention prevents the formation of medi-

98 3 9/1063

zinically undesirable fungi and the appearance of odor.

The invention relates to a hygienic sanitary napkin a tampon with one or more sheets of antibacterial plastic that are placed in the lining or the padding of the sanitary napkin are incorporated, whereby the per se known antibacterial agent, which is otherwise in combination with the usual absorbent Sanitary napkins is used, is bonded with a plastic resin. The plastic foils are perforated or otherwise treated so that the excretions through they can penetrate, but these liquids come into such close contact with the perforated foils, that the bacteria is killed or their reproduction is prevented.

The invention has therefore set itself the goal of a to provide improved sanitary napkin or other menses-absorbent pack in which one or more plastic films treated with an antibacterial agent are incorporated, the surface of which is designed so that the film can be penetrated by the excretions, which latter are evenly distributed over the bandage.

Furthermore, the invention is directed to an improved hygienic bandage or one of the monthly excretions (Menses) absorbent packing in which synthetic fibers are incorporated either in the wadding or in the cover that contain an antibacterial agent *

The sanitary napkins or other bandages according to the invention are intended to destroy the bacteria or. to suppress their reproduction and the occurrence of. prevent unpleasant odors.

9 G 9 8 3 9f /

. ". The invention" will now be explained in more detail with reference to the drawing:

Fig. 1 shows a perspective view of an inventive hygienic bandage including the antibacterial foiienj is part of the wrapper omitted.

Fig. 2 is an enlarged section taken along line 2-2. - in Fig. 1.

3 shows a perspective view of one of the antibacterial plastic films according to a first one Embodiment of the invention.

Fig. 4 shows, also in a perspective view,

(with a part omitted), an antibac; - "'-." ■ material film which corresponds to a second embodiment.

FIG. 4a shows part of the surface of that shown in FIG Slide in high magnification "

\ Fig. 5 shows, again in perspective view, a third embodiment of antibacterial films of the invention.

FIG. 6 is an enlarged partial section analogous to FIG. 2, but showing another embodiment of the invention. · Invention illustrated.

7 is likewise an enlarged partial section Fig. 2, which is yet another embodiment of the Invention shows.

In the drawing, Fig. 1 shows a hygienic or sanitary napkin 10, in which the relatively thick, elongated absorbent liner 12 is primarily composed of a mass of cellulose

-5 -

909839/1063

consists of fibers, which are covered with a liquid-permeable sheath l4 are surrounded, the end 16 of which extends over the absorbent Liner extends out and has the usual means for applying the sanitary napkin by the wearer. =

Within the absorbent lining 12, according to a first embodiment of the invention, one or more perforated foils 18 made of antibacterial treated material, preferably plastic, are arranged in such a way that alternating layers of antibacterial material and wadding are present inside the lining 12. The remote from the body the most outer layer of the lining 12 consists of an imperforate A cover sheet 19 from antibacterially-treated material, which ensures that no leaks, but that the excreted liquid remains within the napkin. In order to prevent liquid from escaping at the edges, the imperforate film 19 can also be so large that it can be folded over the side and end edges of the lining, as shown in FIG. The lining thus consists of a Innenschieht 20 of cotton wool, then in an alternating succession of layers of antibacterial "treated apertured plastic films 18 and wad 22 and has finally an outer layer of an antibacterially treated impermeable sheet 19 It should be back on _it. Rejected, that the number of layers 18 of antibacterially treated plastic can be different or that it can only be a single layer. The layers can be applied in close proximity to the inner surface of the lining or at a greater distance from it, with only towards this care must be taken that the antibacterially treated foils must be arranged close enough to the surface of the lining that is in contact with the body if their antibacterial properties

9098 39 / 1QS

shops should come into their own. During the testing of the invention, a single, non-perforated plastic film with antibacterial properties arranged on the outer surface of the lining 12 without that intermediate films, such as film 18, were present. It: It soon became apparent that the antibacterial effect of a film arranged in this way was too weak to destroy the To effect bacteria or to prevent their growth. which is due to the fact that the foil is too far away was from the area where the excreted liquid enters the napkin and that on the single sheet φ available surface insufficient antibacterial agent contained to help with the odor causing bacteria in the To cope with waste fluids.

The antibacterial plastic film 18 is preferably made from a water-impermeable film made of polyolefin or other plastics, such as acrylic acid polymers or acrylonitrile-butadiene-styrene or ethylene-vinyl acetate copolymers or other such plastics or from copolymers into which a suitable antibacterial agent has been incorporated where such an agent _{dispersible;.} is yaws as anti-bacterial agents include for example genanntj hexachlorophene or Actamer, as described in the W US Patent 2,919,200; "Coröbex RB", as an active ingredient 'about 0.1% 2 Contains ethylhexanol, about 16.0 % diisobutylphenoxyethoxyethyldlmethylbenzyl ammonium chloride and about 14.0 % alkyl (CnC, ^) dimethylbenzyl ammonium chloride ; bacteriostatic organotin compounds of the class of bis (tri-n-alkyltinicylate) sulfosalates are also effective described in ÜSA-Paterit 3 279 986. The antibacterial agent is ■■ preferred '

■ "- 7 -

9098 39/1083

wisely used in a concentrated form, that is, premixed with a certain amount of a particular resin, this premix containing so much antibacterial agent that, when added to a base resin, the whole then the antibacterial agent in an amount of 0.01 to 1, Contains 0 %; however, the invention is not limited to this level, and usable disinfectants were prepared which contained up to 50 % of an antibacterial agent. The mixture is then polymerized and can be compressed> molded by injection molding or blown into a thin film; it can also be pressed into a rod, which is then divided, melted down and re-pressed into a thin film, as is known and customary in plastics processing. The result is a bond between antibacterial chemical and plastic in which the former is uniformly distributed or dispersed in the latter. During the polymerisation of the plastic, the antibacterial agent melts and bonds intimately with the plastic, but crystallizes out in the form of needle-shaped crystals when it cools, which penetrate the molecular structure of the plastic.

The film can be deformed and / or rolled out to any thickness preferably to 0.013 to 0.12 mm. Should he Film to be embossed later is its preferred thickness in the range from 0.025 to 0.076 mm. The film then becomes one Pair of embossing and / or perforating rollers fed to him either a predetermined hole pattern and / or a structured one Grant surface with "channel effect", as will be described further below. Embossed foils can be removed from the roller cut off by placing them between two cutting

909839/1083

" ⁸ '1310334

rolling of a corresponding size performs _t on which cutting devices are arranged in such a way that the cut is adapted to the embossed pattern. The thickness of the finished film is now between 0.05 and 0.15 or between 0.076 and 0.2 mm.

In use, the antibacterial agent used tends to be according to US Pat. No. 2,919,200 to both the front and the to wander to the back of the plastic sheets and that there to either completely unsolder existing bacteria upon contact or to severely hinder their reproduction. The plastic films themselves serve as a reservoir for the hexachlorophene or the aotamer, so that if the amount of antibacterial Medium ah the surfaces of the plastic foils become too small, a sufficient amount is released from the reservoir of antibacterial agent to the surface.

The effect of the sanitary napkin according to the invention, which kills the bacteria or suppresses their reproduction, is evident at the same time in two ways. First, the excretions flow along the surface of the plastic film and come into contact with the antibacterial agent, whereupon they then through the perforation into the layer of cotton wool underneath penetrate, where they may come into contact with other treated plastic films. Second, the soluble antibacterial agents if the cotton or putter from the normal body waste or the monthly waste is moist, sucked in the presence of this moisture by hygroscopic action in the wadding itself, so that there is another contact surface between the antibacterial agent and the liquid waste.

9098 39/1083

191-334

As noted above, the antibacterial plastic film is perforated to allow the monthly exudates can penetrate, being, however, long enough stand ^v with the film into contact to cause an effective suppression of the Bakterienwaohsturns. The plastic films 18 can be in the form of a perforated film with uniform holes; Preferably, however, the form of a plastic film 50 shown in FIG. 5 with perforations 52, 54 and 36 of different sizes is chosen. The smaller holes 52 are then arranged more around the center of the foil and the hole size gradually increases towards the outer edges of the foil. _: ^

The perforations j52, 54 and 56 in the otherwise impermeable Foil cause the. excreted liquid spreads against the edges of the film 50 and out does not accumulate in the middle, as is usually the case Case is. Since the holes become larger after the edges, if more liquid penetrates through the film in the edge area: through than in the middle, as opposed to sanitary napkins or bandages usual structure in which * such a distribution is not takes place.

The same effect can also be achieved with the same perforations Size can be achieved by moving towards the middle of the slide (| provides a smaller number of holes and these after the Edges too dense. The two described above Methods are used to distribute the fluid excreted by the body more uniformly over the bandage than with the usual sanitary napkins is the case.

- 10 -

909839/1063

Another embodiment of the plastic films is in

f - ■ ■ ■ ■ - - -

the pig. 4 and 4A; the antibacterial film 40 is stamped there in such a way that longitudinal channels 42 and Transverse channels 44 have arisen. The channels 42 and 44 close Perforations 46 through which the excreted liquid can penetrate through the film 40, and the channels 42 and 44 also direct the liquid to the edges of the - Foil 40 off so that a better distribution takes place. the Perforations 46 are preferably gradually larger towards the edges of the plastic film. Except for the better: Fluid distribution also contributes to the imprint that ^ l the film becomes more flexible and is therefore more comfortable to wear *

Another embodiment of the plastic films is shown in FIG Fig. 5 shows where the antibacterial film 50 such is marked that a central area 51 results from which Channels 52 against the corners and channels 54 against the edges of the Go out to slide 50. The central area 51 and the channels and 54 have perforations 56, which are also with regard to their size and / or their number against the rough edges the slide 50 can take. For an even better distribution - The excreted liquid can the side walls 58 and 60 of the channels 52 and 54 towards the corners and edges diverge · ■

^ Another possibility provided according to the invention for Use of antibacterial agents is that one the active ingredient in crystalline form with polyolefin or others Combined synthetic resins. The mixture of "the concerned Monomers and the active ingredient is polymerized and made into fibers spun, which then, as shown in Fig. 6, in the

- 11 -

909839/1 083

Wadding 12 'can be incorporated. The antibacterial ones Fibers can also be spun into a yarn, from which a textile fabric can be made that, as shown in Fig. 7, as a cover layer 14 "for the bandage can serve. With these two embodiments, the padding or the lining 12 of the bandage does not have to be added antibacterial plastic films 18 are inserted » If the antibacterial agent is incorporated into a fiber or a yarn, the entire surface stands for the antibacterial agent Effect available.

It should also be noted that the embodiments according to the invention are not only used for sanitary napkins for external use Application can be used, but that they are just as suitable for use as insertable hygienic tampons are.

In any event, the invention provides a means that when used in the critical days of women, the risk of infection and the appearance of an unpleasant smell significantly restricts.

- Expectations -

9098 39/1063

Claims (12)

Expectations Absorbent sanitary napkin made of an absorbent lining surrounded by a liquid-permeable cover thereby g e know that it is a with plastic material combined with an antibacterial agent which forms part of the absorbent pad to collect the discharge. 2. Sanitary napkin according to claim 1, characterized in that ge k e η η ζ E i c h η e t that the antibacterial plastic material is a polyolefin, which is an antibacterial Medium is intimately mixed. 3. Sanitary napkin according to claim 1, characterized ge k en η ζ e i c h η e t that the antibacterial plastic material is an acrylic acid resin, which is an antibacterial one Medium is intimately mixed. 4. Sanitary napkin according to claim 1, characterized in that g e k e η η ζ e i c h η e t that the antibacterial plastic material is an acrylonitrile-butadiene-styrene copolymer to which an antibacterial agent is intimately mixed. 909839/1063 5. Sanitary napkin according to claim 1, characterized in that g e k e η η ζ e i c h η et, "that the antibacterial 'plastic material is an ethylene-vinyl acetate copolymer, the 'an antibacterial agent is intimately mixed in. \ 6. Sanitary napkin according to one of claims 1 to 5, characterized marked that with the plastic mixed antibacterial agents is hexachlorophene. 7. Sanitary napkin according to one of Claims 1 to 5, characterized in that the antibacterial agent mixed with the plastic is 2,2-thid-bis- (4,6-phenol) . ■ -.- "" ■ "■ - ,;" 8. Sanitary napkin according to one of claims 1 to 7 * thereby g e k e η η ζ e i c h η e t that at least one film (18, 30, 4o) made of antibacterial treated material in'das Putter or the insert is incorporated, in which it forms a layer, and that the film is designed in such a way is that. they permeated with the monthly excretions will. ■ 9. Sanitary napkin according to claim 8, characterized in that the film has perforations (32, 34, 36, 46, 56). which allow penetration of the precipitates through the film ... .. '' 10. Sanitary napkin according to claim 9, characterized in that the perforations (32, 34, 36, 46, .56) are of different sizes, the smaller (32) closer to the central region of the film and the larger (36) closer to the foil edges are arranged. 9098 3 97106 3 11. Sanitary napkin according to claim 9, characterized in that g e k e nn ζ eic h et that the number of perforations in near the polia edges is greater than their number in near the central area of the film. 12. Sanitary napkin according to claim 9 » characterized in that a number of embossed channels (52, 54) extend from the center (51) of the film (50) against their corners and edges, which represent a channel system that the liquid body excretions against Edges or corners of the film (50) leads out. .15 · Sanitary napkin in particular according to one of claims 1 to 12, characterized in that it has a liquid-permeable cover (1.4 ") made of a textile product which is formed from an antibacterially treated yarn, the latter from fibers which are formed from a synthetic resin mixed with an antibacterial agent, the substances mentioned in claims 2 to 7 preferably serving as the antibacterial agent and the synthetic resin . Ik. Sanitary napkin in particular according to one of claims 1 to 7, characterized in that fibers W formed from the plastic mixed with the antibacterial agent are distributed within the entire absorbent lining or insert. ■ "■■ - ■" ■ i 15 Monthly pad according to claim 14, characterized in that that from the plastic mixed with the antibacterial agent formed fibers together with cellulose fibers mixed the absorbent lining with it or form the deposit. ν 9098 3 9/1063 Blank page