SI23658A - Tampon with enhanced sliding ability of its outer surface area and process for its manufacturing - Google Patents
Tampon with enhanced sliding ability of its outer surface area and process for its manufacturing Download PDFInfo
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Higienski tampon z izboljšano drsnostjo na zunanji površini in postopek izdelave tovrstnega tamponaHygienic pad with improved outer surface sliding and manufacturing process for this pad
Predmetni izum se nanaša na tampon, še zlasti na higienski tampon. Po Mednarodni patentni klasifikaciji so tovrstni izumi v okviru tekočih življenjskih potrebščin razvrščeni na področje medicine in higiene in v okviru teh na področje tamponov, še zlasti menstruacijskih higienskih tamponov in pribora zanje.The present invention relates to a tampon, in particular a hygienic tampon. According to the International Patent Classification, such inventions are classified in the field of medicine and hygiene and in the field of tampons, in particular menstrual hygiene tampons and accessories, in the context of liquid consumer goods.
Pri tem je izum osnovan na problemu, kako pri tamponu, kakršnega je možno izdelati iz enakih surovin, na enakih strojih in v osnovi po enakih tehnoloških korakih kot doslej znane komercialno zanimive tampone, znatno izboljšati drsnost na z rebri in žlebovi opremljeni zunanji površini ter s tem olajšati vstavljanje tampona, ne da bi bile s tem okrnjene druge lastnosti tampona, še zlasti zmožnost zadrževanja tekočine, kar se manifestira s specifično vpojnostjo in hitrostjo absorpcijo, po možnosti brez neželenega izcejanja (»leakage«), kot tudi stabilnost, namreč dimenzijska in uklonska stabilnost tampona.The invention is based on the problem of how, in a tampon, such as can be made from the same raw materials, on the same machines and basically following the same technological steps as the commercially interesting tampons known hitherto, significantly improve the sliding on the outer surface of the ribs and grooves and with facilitate the insertion of the tampon without impairing other properties of the tampon, in particular the ability to retain fluid, which is manifested by specific absorbency and absorption rate, preferably without leakage, as well as stability, namely dimensional and removal stability of the buffer.
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Tampon, kakršen je opisan v EP 0 422 660, sestoji iz netkanega vlaknastega surovca, ki je dobljen z navijanjem netkanega vlakninskega traku okoli vzdolžne osi, s čimer se ustvari vsaj približno valjast preoblikovanec, ki se ga nato s stiskanjem s pomočjo ustreznih čeljusti v radialni smeri, npr. s pomočjo stiskalne priprave po DE 19 825 877, oblikuje v tampon. Tak tampon je v osnovi še vedno valjaste oblike, vendar ima na površini vtisnjene radialno navznoter usmerjene žlebove, ki obenem po omenjeni zunanji površini potekajo v vzdolžni smeri tampona oz. vzporedno z omenjeno vzdolžno oz. osrednjo osjo tampona. Tovrstni tamponi so v stroki znani pod imenom »digitalni« tamponi. Med vsakokrat sosednjima žleboma je tako na voljo po eno rebro, pri čemer zunanji obod omenjenih reber določa zunanji premer tampona, dno omenjenih žlebov pa določajo premer razmeroma komprimiranega jedra tampona. Z naknadnim, razmeroma blagim stiskanjem tampona v območju omenjenih reber dosežejo konveksnost oz. usločenost bočnih površin omenjenih reber, tako da se bočni površini vsakokrat sosednjih reber dotikata druga druge in v bližini omenjenega komprimiranega jedra formirata cevast, z vzdolžno osjo tampona vzporedno potekajoč prostor. Tovrstna zasnova naj bi privedla do ugodnih učinkov, in sicer do povečanja uklonske oz. upogibne trdnosti tampona in še zlasti tudi do povečanja specifične vpojnosti in hitrosti absorpcije v vzdolžni smeri tampona. Stabilnost tampona je odločilnega pomena v pogledu zaupanja s strani uporabnice in še zlasti pride do izraza med vstavljanjem tampona. Poleg same uklonske stabilnosti je med vstavljanjem pomembno tudi to, da je zunanja površina, ki je med uporabo tampona v neposrednem stiku s sluznico, karseda gladka oz. da je torni koeficient na zunanji površini tampona karseda nizek.The tampon as described in EP 0 422 660 consists of a non-woven fibrous blank obtained by winding a non-woven fiber web about a longitudinal axis, thereby creating at least approximately a cylindrical mold, which is then pressed by means of suitable jaws into a radial directions, e.g. by means of a compression device according to DE 19 825 877, forms into a tampon. Such a tampon is basically cylindrical in shape, but has radially inward grooves impressed on the surface, which at the same time extends along said outer surface in the longitudinal direction of the tampon. parallel to said longitudinal or the central axis of the tampon. Such tampons are known in the art as "digital" tampons. Thus, one rib is available between adjacent grooves, with the outer circumference of said ribs determining the outer diameter of the buffer and the bottom of said grooves determining the diameter of the relatively compressed core of the buffer. Subsequent, relatively gentle compression of the tampon in the region of said ribs achieves convexity. bending of the lateral surfaces of said ribs so that the lateral surfaces of each adjacent ribs touch each other and form a tubular space parallel to the longitudinal axis of the tampon in the vicinity of said compressed core. Such a design should lead to favorable effects, namely increasing the clearance or the flexural strength of the tampon and, in particular, the increase of the specific absorption and absorption rate in the longitudinal direction of the tampon. The stability of the tampon is crucial in terms of user confidence and, in particular, occurs during insertion of the tampon. Besides insertion stability, it is also important during insertion that the outer surface, which is in direct contact with the mucous membrane during use, be as smooth as possible. that the friction coefficient on the outer surface of the tampon is as low as possible.
V skladu z EP 1 014 910 je gladko zunanjo površino možno doseči v procesu stiskanja vlaknovine v obliko tampona, pri čemer se uporabi pritisk, ki je znatno • · • · · · višji kot pri stiskanju pred tem znanih tamponov. Zahvaljujoč uporabi ekstremno visokega pritiska naj bi bila zagotovljena stabilnost oblike tampona, obenem pa naj bi tako dobljen tampon obsegal gladko zunanjo površino. Vendar pa je v skladu z omenjenim virom možno izdelovati vsaj približno cilindrične tampone brez reber in utorov na zunanji površini, katerih čemer je specifična vpojnost, torej vpojnost tekočine glede na količino vlaknovine, manjša kot pri tamponih z rebri in utori na zunanji površini.According to EP 1 014 910, a smooth outer surface can be achieved in the process of compressing a fiber into a tampon shape, using a pressure that is significantly higher than that of previously known tampons. Thanks to the use of extremely high pressure, the shape of the tampon is ensured, while the tampon thus obtained has a smooth outer surface. However, according to the aforementioned source, it is possible to produce at least approximately cylindrical tampons without ribs and grooves on the outer surface, whose specific absorbance, ie the absorbance of the liquid with respect to the amount of fiber, is less than that with tampons with ribs and grooves on the outer surface.
Dimenzijsko stabilnost tamponov je mogoče doseči tudi s segrevanjem stiskalnih čeljusti, v katerih se vlaknovino preoblikuje v tampon, kar je opisano npr. v US 4,981,884. Tudi v tem primeru je možno izdelati vsaj približno cilindričen tampon, brez utorov in reber na zunanji površini, katerega specifična vpojnost je podobna kot pri predhodno obravnavani rešitvi po EP 1 014 910.The dimensional stability of the tampons can also be achieved by heating the compression jaws in which the fiber is transformed into a tampon, as described e.g. in US 4,981,884. In this case, too, it is possible to produce at least an approximately cylindrical buffer, without grooves and ribs on the outer surface, whose specific absorbency is similar to that of the previously discussed solution according to EP 1 014 910.
Nadaljnji možen pristop pri zagotavljanju drsne zunanje površine pri tamponu je opisan npr. v WO 01/01910 Al, pri čemer gre za tampon, kije na zunanji površin obdan z ovojnico iz perforirane ovojnice na osnovi umetnih vlaken, ki sicer kot taka ne vpijajo tekočine, zagotavljajo pa zelo dobro drsnost zunanje površine tampona. S tem, ko je omenjena ovojnica perforirana, omogoča prehod tekočine v smeri proti notranjosti tampona, kjer se v območju naravnih in ustrezno vpojnih vlaken tekočina potem absorbira. Po eni strani že prisotnost omenjene ovojnice v klasičnem procesu velikoserijske izdelave tamponov samo izdelavo tampona zelo zaplete, in sicer že zgolj v pogledu transporta skozi sam stroj, zaradi česar je npr. v EP 1 244 402 BI še posebej predlagana uporaba neionske površinsko aktivne snovi. Po drugi strani je na račun znatnega izboljšanja drsnosti zunanje površine tako dobljenega tampona znatno okrnjena specifična absorptivnost in še zlasti tudi hitrost absorpcije.A further possible approach in providing a sliding outer surface for a tampon is described e.g. in WO 01/01910 Al, which is a tampon which is enclosed on the outer surface by a perforated envelope based on man-made fibers which, as such, does not absorb liquids but which provides a very good sliding of the outer surface of the tampon. By perforating said envelope, it permits the passage of fluid in the direction of the buffer inside, where the fluid is then absorbed in the area of the natural and properly absorbent fibers. On the one hand, the presence of the aforementioned envelope in the classical process of large-scale production of tampons makes the production of the tampon very complicated, from the point of view of transport through the machine itself. EP 1 244 402 BI specifically proposes the use of a non-ionic surfactant. On the other hand, due to the considerable improvement in the sliding of the outer surface of the tampon thus obtained, the specific absorptivity and in particular the absorption rate are significantly reduced.
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Še nadaljnji možen pristop pri zagotavljanju izboljšane drsnosti na zunanji površini tampona je opisan v EP 1 035 819 ali US2003/0105444 Al, pri čemer se že v fazi ovijanja plasti naravne vlaknovine v vsaj približno cilindričen surovec, iz katerega potem z radialnim stiskanjem s pomočjo ustreznih čeljusti oblikujejo tampon, na omenjeno plast vlaknovine pritrdi predhodno zglajeno ovojnico, ki se jo nato skupaj z omenjeno plastjo vlaknovine zvije v omenjen surovec. S stiskanjem v radialni smeri s pomočjo omenjenih radialnih čeljusti se potem oblikuje tampon, ki je na svoji obodni površini po celotnem obsegu obdan z omenjeno ovojnico, razen tega pa tak tampon podobno kot tampon po EP 0 422 660 na svoji obodni površini obsega rebra in utore, s čimer naj bi bila načeloma poleg oblikovne in uklonske stabilnosti zagotovljena tudi razmeroma visoka specifična absorptivnost in hitrost absorpcije. Ker glajenje omenjene ovojnic iz dvokomponentne vlakninske strukture in vsaj deloma iz umetnih vlaken sestoječe ovojnice poteka s kalandriranjem med primemo segretima valjema, pri čemer se umetna vlakna plastificirajo in v plastičnem stanju deformirajo, se s tem zmanjša prepustnost ovojnice za tekočino, s čimer se znatno poveča hidrofobnost tako glajene ovojnice. V skladu z opisanim konceptom izdelave tampona je predhodno glajena ovojnica na voljo po celotnem obsegu tako izdelanega tampona, in sicer tako na zunanjih površinah reber, ki so med uporabo tampona v stiku s sluznico, kot tudi v območju utorov med omenjenimi rebri. V praksi se izkaže, da se zahvaljujoč predhodnemu glajenju ovojnice drsnost na zunanji površini tampona dejansko izboljša, obenem pa se zaradi prisotnosti omenjene vsaj deloma hidrofobne ovojnice v območju utorov med rebri znatno spremeni sam potek absorpcije tekočine v tampon. Prav zaradi prisotnosti omenjene glajene in vsaj deloma hidrofobne ovojnice namreč po omočenju tampona na enem njegovem koncu tekočina po tamponu znatno hitreje napreduje v njegovi aksialni smeri kot pa v radialni smeri proti vpojnemu jedru, ki je zmožno absorbirati večino tekočine. Očitno je torej, da tovrsten tampon navzlic • · • · · · pričakovani zmožnosti zadrževanja tekočine kaže izrazito tendenco napredovanja tekočine v aksialni smeri tampona, kar pa neizogibno privede do izcejanja tekočine (strokovnjakom znano kot »leakage«) na nasprotnem koncu tampona, kar je med uporabo absolutno nezaželeno. Navzlic še nadaljnjemu izboljšanju same drsnosti in zagotavljanju mehkega otipa tampona na zunanji površini s pomočjo posebne vlakninske strukture ovojnice npr. po EP 1 988 202 Al, pri nespremenjenem konceptu tampona glede uporabe glajene ovojnice po njegovem celotnem obsegu, še zlasti problem neustreznega poteka absorpcije zaradi tendence napredovanja tekočine v aksialni namesto v radialni smeri tampona in posledično izcejanja tekočine ostaja v celoti nerešen.A further possible approach in providing improved sliding on the outer surface of the tampon is described in EP 1 035 819 or US2003 / 0105444 Al, already in the phase of wrapping a layer of natural fiber into at least approximately a cylindrical blank, from which then by radial pressing by means of suitable the jaws form a tampon and attach a previously smoothed envelope to said layer of fiber, which is then rolled together with said layer of fiber into said blank. By pressing in the radial direction with the help of the said radial jaws, a buffer is then formed which is surrounded by said envelope along its circumferential surface, and in addition, such a buffer, like the buffer according to EP 0 422 660, has ribs and grooves on its circumferential surface. , which, in principle, should ensure, in addition to design and clearance stability, a relatively high specific absorption and absorption rate. As the smoothing of said envelopes of the two-component fiber structure and at least partly of the man-made fibers of the standing envelope is calendered between the heated cylinders, the artificial fibers being plasticized and deformed in the plastic state, this reduces the permeability of the fluid envelope, thereby significantly increasing the hydrophobicity of such a smoothed shell. In accordance with the described concept of fabrication of the tampon, the pre-smoothed envelope is available over the entire circumference of the tampon thus produced, both on the outer surfaces of the ribs which are in contact with the mucous membrane during the use of the tampon, as well as in the groove area between said ribs. In practice, it appears that due to the prior smoothing of the envelope, the sliding on the outer surface of the tampon actually improves, but due to the presence of said at least partially hydrophobic envelope in the groove area between the ribs, the very course of fluid absorption into the tampon significantly changes. Due to the presence of said smoothed and at least partially hydrophobic envelope, after wetting the tampon at one end of it, the fluid progresses substantially faster in its axial direction than in the radial direction towards the absorbent core, which is capable of absorbing most of the fluid. It is obvious, therefore, that such a tampon outward • • • · · · the expected ability to retain the fluid shows a marked tendency for the fluid to progress in the axial direction of the tampon, which inevitably leads to the leakage of fluid (known to experts as "leakage") at the opposite end of the tampon, which is absolutely unwanted during use. In addition, to further improve the shear itself and to provide a soft feel of the tampon on the outer surface by means of a special fiber structure of the envelope, e.g. according to EP 1 988 202 Al, with the unchanged concept of the tampon with regard to the use of the smoothed envelope throughout its scope, in particular the problem of inadequate absorption due to the tendency of the fluid to move in the axial instead of the radial direction of the tampon and, consequently, to drain the fluid remains completely unsolved.
Izum se nanaša na higienski tampon z izboljšano drsnostjo na zunanji površini, pri čemer tovrsten tampon sestoječi iz vpojnega jedra na osnovi dobro vpojnih naravnih ali umetnih vlaken kot tudi iz v bistvu neprekinjene in vsaj deloma iz po svoji površini vsaj približno enakomerno razporejenih termoplastičnih vlaken sestoječe ovojnice, s katero je po svojem celotnem obodu in praktično po svoji celotni zunanji površini obdano omenjeno vpojno jedro. Tovrsten tampon je nadalje po izbiri na enem svojem koncu zožen in zaključen z blago zaobljeno konico, na svojem nasprotnem koncu pa opremljen z vrvico za lažjo odstranitev tampona po uporabi. Še nadalje in je tovrsten tampon nadalje zahvaljujoč stiskanju vsaj v radialni smeri na svoji površini opremljen z določenim številom v obodni smeri tampona med seboj enakomerno razmaknjenih radialnih žlebov, ki potekajo med seboj vsaj približno vzporedno in vsaj približno v vzdolžni smeri tampona ali poševno pod določenim kotom glede na vzdolžno os tampona, tako da je med vsakokrat sosednjima žleboma na voljo po eno rebro z blago ukrivljeno, konveksno zunanjo površino, tako da konveksne površine omenjenih reber tvorijo vsaj približno cilindrično zunanjo površino tampona.The invention relates to a hygienic pad with improved sliding on the outer surface, wherein the tampon consists of an absorbent core based on well-absorbed natural or man-made fibers, as well as essentially continuous and at least partly from its surface at least approximately evenly spaced thermoplastic fibers of an envelope , by which said absorbent core is surrounded by its entire circumference and practically its entire outer surface. The tampon of this type is further optionally narrowed at one end and terminated with a slightly rounded tip and provided with a twine at its opposite end to facilitate removal of the tampon after use. Moreover, thanks to pressing at least in the radial direction on its surface, this tampon is further provided with a number of circumferentially spaced radial grooves spaced at least about one another in circumferential direction, extending at least approximately parallel and at least approximately in the longitudinal direction of the tampon or at an oblique angle. with respect to the longitudinal axis of the tampon, such that one rib with a slightly curved, convex outer surface is available between each of the adjacent grooves, such that the convex surfaces of said ribs form at least an approximately cylindrical outer surface of the tampon.
Po izumu je predlagano, daje tampon z namenom zagotavljanja izboljšane drsnosti svoje zunanje površine oz. nižjega tornega koeficienta na njegovi zunanji površini glajen izključno v območju konveksnih zunanjih površin omenjenih reber.According to the invention, it is proposed to provide a tampon for the purpose of providing improved sliding of its outer surface, or. of the lower friction coefficient smoothed on its outer surface exclusively in the region of the convex outer surfaces of said ribs.
Temu ustrezno je iz dvokomponentnih vlaken, pri katerih vsaj zunanja komponenta sestoji iz termoplastičnega gradiva, ali iz dvokomponentne mešanice vlaken, od katerih vsaj določen delež predstavljajo termoplastična vlakna, sestoječa ovojnica v območju konveksnih zunanjih površin omenjenih reber na svoji zunanji površini glajena s segrevanjem termoplastičnih vlaken ali termoplastične komponente posameznih vlaken na temperaturo v območju plastifikacije termoplastičnega gradiva vlaken ob sočasnem zagotavljanju enakomernega blagega pritiska proti omenjeni zunanji površini ovojnice tampona v radialni smeri le-tega.Accordingly, of two-component fibers in which at least the outer component consists of thermoplastic material, or of a two-component mixture of fibers of which at least a certain proportion is represented by thermoplastic fibers, the envelope in the region of convex outer surfaces of said ribs on its outer surface is smoothed by heating of thermoplastic fibers or the thermoplastic component of the individual fibers to a temperature in the area of plasticization of the thermoplastic material of the fibers, while providing uniformly slight pressure against said outer surface of the buffer envelope in the radial direction thereof.
V skladu z enim od primerov izvedbe je iz vlaken iz poliestra PES 0edro posameznega vlakna) in polietilena PE visoke gostote (ovojnica posameznega vlakna) v razmerju PE : PES = 34% : 66% do PE : PES = 50% : 50%, ali iz dvokomponentne mešanice vlaken omenjene sestave, pri čemer specifična teža take dvokomponentne vlaknovine na površinsko enoto znaša 12 do 20 g/m2, prednostno pa približno 16 g/m , sestoječa ovojnica tampona v območju konveksnih zunanjih površin omenjenih reber glajena zahvaljujoč plastificiranju polietilenskih (PE) vlaken ali polietilenske komponente (PE) posameznega vlakna pri temperaturi od 120°C do 180°C, prednostno pa od 122°C do 148°C in sočasnemu podvrženju tako plastificiranih vlaken na zunanji površini ovojnice tampona blagemu in enakomernemu pritisku, ki glede na tampon deluje v smeri radialno navznoter.According to one embodiment, high-density polyester PEES (single fiber) is made of PEES polyester fibers (PE envelope) in a ratio of PE: PES = 34%: 66% to PE: PES = 50%: 50%, or of a two-component mixture of fibers of said composition, wherein the specific gravity of such two-component fiber per surface unit is 12 to 20 g / m 2 , and preferably about 16 g / m, a standing buffer envelope in the region of convex outer surfaces of said ribs smoothed by the plasticizing of polyethylene (PE ) fibers or polyethylene components (PE) of a single fiber at a temperature of 120 ° C to 180 ° C, preferably 122 ° C to 148 ° C, and at the same time to subject the plasticised fibers on the outer surface of the buffer envelope to a gentle and uniform pressure which, depending on the buffer acts radially inwards.
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Po izumu je predviden tudi postopek izdelave higienskega tampona predhodno opisane vrste, ki se odlikuje po izboljšani drsnostjo na zunanji površini, pri čemer postopek izdelave tovrstnega tampona v splošnem obsega korakeThe invention also provides a method of manufacturing a hygienic tampon of the type described above, characterized by improved sliding on the outer surface, the method of making such a tampon generally comprising steps
- priprave plasti netkane vlaknovine primerne debeline za izdelave vpojnega jedra, sestoječe iz naravnih ali sintetičnih vlaken ali kombinacije-le-teh;- preparing a layer of non-woven fiber of suitable thickness for the fabrication of an absorbent core consisting of natural or synthetic fibers or a combination thereof;
- priprave plasti netkane vlaknovine primerne debeline za izdelavo ovojnice, pri kateri je sestava vlaken tako izbrana, da vsaj zunanja komponente dvokomponentnih vlaken sestoji iz termoplastičnega gradiva ali pa da v primeru mešanice enokomponentnih vlaken vsaj del vlaken predstavljajo termoplastična sintetična vlakna;- preparing a layer of non-woven fiber of appropriate thickness to produce an envelope in which the fiber composition is so selected that at least the outer components of the two-component fibers consist of thermoplastic material or, in the case of a mixture of one-component fibers, at least part of the fibers are thermoplastic synthetic fibers;
- razreza vlaknovine za pripravo vpojnega jedra v trak dolžini tampona prirejene širine in premeru oz. obsegu tampona prirejene dolžine;- cutting the fiber to prepare the absorbent core into a strip of tampon length of custom width and diameter, or. the length of the tampon of custom length;
- razreza vlaknovine za pripravo ovojnice v trak dolžini tampona prirejene širine in premeru oz. obsegu tampona prirejene dolžine;- cutting the fiber for preparing the envelope into a strip of the length of the tampon of custom width and diameter, respectively. the length of the tampon of custom length;
- sestavljanja sklopa traku za pripravo vpojnega jedra in traku za pripravo ovojnice s polaganjem traku za pripravo ovojnice preko določenega območja traku za pripravo vpojnega jedra, pri čemer ta korak po izbiri vključuje tudi vstavljanje vrvice za odstranjevanje tampona po uporabi le-tega na vsakokrat ustrezno mesto;- assembling an assembly of an absorbent core preparation tape and an envelope preparation tape by depositing an envelope preparation tape over a defined area of the absorbent core preparation tape, this step optionally including inserting a tampon removal cord after using it in each appropriate location ;
- navijanja traku (10) za pripravo vpojnega jedra okoli prečne osi traku, s čimer se formira v bistvu cilindričen surovec, ki je po celotni zunanji površini ali vsaj po pretežnem delu svoje zunanje površine ovit s po obodu v neprekinjeno celoto spojenim trakom za pripravo ovojnice, pri čemer je premer tako dobljenega surovca prirejen pričakovanemu premeru oz. obsegu tampona, dolžina omenjenega surovca pa je prirejena pričakovani dolžini tampona;- winding the strap (10) for preparing an absorbent core about the transverse axis of the strap, thereby forming a substantially cylindrical blank which is wrapped around the outer surface or at least a substantial portion of its outer surface by a circumferentially joined joint to prepare the envelope , whereby the diameter of the blank thus obtained is adapted to the expected diameter or. the circumference of the pad and the length of said blank is adjusted to the expected length of the pad;
- radialnega stiskanja surovca v ustreznem orodju s pomočjo primemo oblikovanih čeljusti, s čimer se formira po izbiri na enem koncu z zoženo in blago zaokroženo konico zaključen, v splošnem pa vsaj približno cilindričen tampon, na katerega • · • · · · površini je vtisnjeno številu omenjenih stiskalnih čeljusti ustrezno število v obodni smeri tampona med seboj enakomerno razmaknjenih radialnih žlebov, ki potekajo med seboj vsaj približno vzporedno in vsaj približno v vzdolžni smeri tampona ali poševno pod določenim kotom glede na vzdolžno os tampona, tako da je med vsakokrat sosednjima žleboma na voljo po eno rebro z blago ukrivljeno, konveksno zunanjo površino, tako da konveksne površine omenjenih reber tvorijo vsaj približno cilindrično zunanjo površino tampona, in- radially compressing the workpiece in a suitable tool with the help of clamped jaws, thereby optionally forming at one end a narrowed and slightly rounded tip, and generally at least approximately a cylindrical tampon with a number imprinted on the surface. said press jaws having an appropriate number in the circumferential direction of the tampon of radially grooved spaced spaced at least about one another and at least approximately longitudinally in the direction of the tampon or at an angle at a given angle with respect to the longitudinal axis of the tampon so that there are at each time adjacent grooves one rib with a slightly curved, convex outer surface such that the convex surfaces of said ribs form at least about a cylindrical outer surface of the tampon, and
- glajenja zunanje površine tampona izključno v območju konveksnih zunanjih površin reber s potiskanjem tako formiranega tampona skozi konusno notranjo površino ustrezne matrice v aksialni smeri le-te, s čimer se tako formiran tampon v območju omenjenih zunanjih površin reber podvrže blagemu enakomernemu pritisku v smeri radialno navznoter.- smoothing the outer surface of the tampon solely in the area of the convex outer surfaces of the ribs by pushing the thus formed tampon through the conical inner surface of the corresponding matrix in the axial direction thereof, thereby subjecting the tampon thus formed to a slight uniform pressure in the radial inward direction .
Po izumu je predvideno, da se omenjeni korak glajenja zunanje površine tampona, namreč glajenja zunanje površine vsaj deloma iz enakomerno po površini razporejenih termoplastičnih vlaken ali zunanjo termoplastično komponento obsegajočih dvokomponentnih vlaken sestoječe ovojnice zaradi zagotavljanja pričakovane drsnosti na zunanji površini tampona vrši na tak način, da se v ovojnici razpoložljiva termoplastična vlakna ali vsakokrat razpoložljivo zunanjo termoplastično komponento posameznih dvokomponentnih vlaken izključno v območjih konveksnih zunanjih površin na rebrih tampona segreje na temperaturo plastifikacije omenjenih termoplastičnih vlaken, nakar se tako plastificirana vlakna podvrže omenjenemu blagemu enakomernemu pritisku v smeri radialno navznoter.According to the invention, said smoothing of the outer surface of the tampon, namely smoothing the outer surface at least in part of the thermoplastic fibers evenly distributed over the surface or the outer thermoplastic component of the enclosing two-component fibers of the standing envelope, in order to provide the expected sliding on the outer surface of the tampon the thermoplastic fibers available, or the available outer thermoplastic component of the individual bicomponent fibers, exclusively in the areas of convex outer surfaces on the tampon ribs, are heated to the plasticization temperature of said thermoplastic fibers, and then the plasticized fibers are subjected to said mildly uniformly inward pressure.
Pri prednostni izvedbi postopka po izumu se iz dvokomponentnih vlaken z jedrom iz poliestra PES in ovojnico iz polietilena PE visoke gostote v razmerju PE : PES = 34% : 66% do PE : PES = 50% : 50%, ali iz mešanice enokomponentnih vlaken omenjene sestave, pri čemer gostota take dvokomponentne vlaknovine znaša 12 do 20 g/m , prednostno pa približno 16 g/m , sestoječo ovojnico v območju konveksnih zunanjih površin omenjenih reber na njeni zunanji površini gladi s segrevanjem termoplastičnih vlaken ali termoplastične komponente vlaken na temperaturo v območju plastifikacije polietilenskih PE vlaken ob sočasnem zagotavljanju enakomernega blagega pritiska proti omenjeni zunanji površini ovojnice v radialni smeri tampona. Pri tem se z namenom plastifikacije polietilenskih (PE) vlaken ali polietilenske (PE) komponente vlaken le-ta oz. le-to segreje na temperaturo od 120°C do 180°C, prednostno pa od 122°C do 148°C, nakar se plastificirana vlakna na zunanji površini ovojnice podvrže blagemu in enakomernemu pritisku, ki glede na tampon deluje v smeri radialno navznoter.In a preferred embodiment of the process of the invention, two-component fibers with a PES polyester core and a high-density polyethylene PE envelope in the ratio PE: PES = 34%: 66% to PE: PES = 50%: 50%, or from a mixture of one-component fibers mentioned compositions, wherein the density of such two-component fiber is 12 to 20 g / m, preferably about 16 g / m, the smoothed envelope in the region of convex outer surfaces of said ribs on its outer surface is smoothed by heating the thermoplastic fibers or thermoplastic fiber component to a temperature in the range plasticisation of polyethylene PE fibers, while providing uniformly slight pressure against said outer surface of the envelope in the radial direction of the tampon. For the purpose of plasticizing the polyethylene (PE) fibers or the polyethylene (PE) component of the fibers, they are or. it is heated to a temperature of 120 ° C to 180 ° C, preferably 122 ° C to 148 ° C, after which the plastic fibers are subjected to a gentle and uniform pressure on the outer surface of the envelope, which acts radially inwards with respect to the buffer.
Izum bo v nadaljevanju podrobneje obrazložen s primerom izvedbe, ki je ponazorjen na priloženi skici, kjerThe invention will now be explained in more detail by way of an embodiment illustrated in the accompanying drawing, where
Sl. 1 shematično in v prečnem prerezu ponazarja tampon po izumu;FIG. 1 schematically and cross-sectionally illustrates a tampon according to the invention;
Sl. 2 prav tako shematično predstavlja začetno fazo izdelave tampona po Sl. 1, namreč navijanje vlaknovine z nameščeno ovojnico, in sicer z namenom, da se formira surovec:FIG. 2 also schematically represents the initial stage of fabrication of the tampon according to FIG. 1, namely winding the fiber with the envelope mounted, for the purpose of forming a blank:
Sl. 3 pa končno fazo izdelave tampona po Sl, 1, namreč stiskanje surovca po Sl. 1 v radialni smeri in temu sledeče glajenje zunanje površine reber tampona.FIG. 3 shows the final stage of fabrication of the tampon according to FIG. 1, namely pressing the blank according to FIG. 1 in the radial direction, followed by smoothing the outer surface of the tampon ribs.
Tampon po izumu (Sl. 1), kije lahko digitalni tampon, predviden za vstavljanje s prsti, ali aplikatorski tampon, ki je predviden za vstavljanje s pomočjo strokovnjakom znane priprave t.j. takoimenovanega aplikatorja j, je v osnovi izdelan vpojnega jedra 1, ki je po celotnem obodu obdano z ovojnico 2 za izboljšanje drsnosti zunanje površine tampona.The tampon according to the invention (Fig. 1), which may be a digital tampon intended for insertion with the fingers, or an applicator tampon intended for insertion by means of a person skilled in the art, e.g. the so-called applicator j, is basically made of an absorbent core 1, which is surrounded by an envelope 2 throughout the circumference to improve the sliding of the outer surface of the tampon.
Omenjeno vpojno jedro 1 tampona sestoji iz netkanega prediva na osnovi ustrezno vpojnih naravnih in/ali sintetičnih vlaken, pri čemer kot naravna vlakna pridejo v poštev npr. bombažna vlakna, kot umetna vlakna pa npr. rayon. Tudi omenjena ovojnica 2 v osnovi sestoji iz ustrezno debele plasti netkanih vlaken, ki pa so tako izbrana, da dopuščajo prehod tekočine skozi omenjeno plast vlaken, še zlasti pa zagotavljajo čim boljšo drsnost in torej čim nižji torni koeficient na sami zunanji površini tampona.Said absorbent core 1 of the tampon consists of a non-woven yarn based on properly absorbable natural and / or synthetic fibers, such as natural fibers being e.g. cotton fibers, such as man-made fibers, e.g. rayon. Also, said envelope 2 consists essentially of a suitably thick layer of nonwoven fibers, which is selected to allow fluid to pass through said layer of fibers, and in particular to provide the best slip and, as a minimum, the friction coefficient on the outer surface of the buffer.
Po izumu je predvidena izdelava ovojnice 2 iz termoplastičnih vlaken, še zlasti iz dvokomponentnih vlaken z vsaj eno zunaj razporejeno termoplastično komponento, ali iz mešanice enokomponentnih vlaken, od katerih vsaj določen delež predstavljajo termoplastična vlakna. V primeru tampona po Sl. 1 gre za dvokomponentna vlakna z jedrom iz poliestra (PES), obdanim s termoplastično ovojnico iz polietilena (PE) visoke gostote v razmerju PE : PES = 34% : 66% do PE : PES = 50% : 50%, pri čemer specifična masa take vlaknovine na površinsko enoto znaša 12 do 20 g/m , prednostno pa vsaj približno 16 g/m .According to the invention, it is contemplated to manufacture an envelope 2 of thermoplastic fibers, in particular of two-component fibers with at least one thermoplastic component disposed externally, or of a mixture of one-component fibers, of which thermoplastic fibers represent at least a certain proportion. In the case of the tampon according to FIG. 1 is a two-component fiber with a polyester core (PES) surrounded by a high density polyethylene (PE) thermoplastic envelope in a PE ratio of: PES = 34%: 66% to PE: PES = 50%: 50%, with a specific mass such fiber per surface unit is 12 to 20 g / m, preferably at least about 16 g / m.
Izdelava samega tampona poteka na tak način, da se najprej formira ustrezno debelo plast omenjenega prediva za izdelavo jedra 1, iz katere se potem pripravi trak 10 ustrezne širine in dolžine. Širina traku 10 je prirejena dolžini tampona, dolžina traku pa glede na debelino pričakovanemu premeru surovca in kasneje pričakovanemu premeru samega tampona.The tampon itself is made in such a way that a suitably thick layer of said yarn is first formed to produce a core 1 from which a strip 10 of appropriate width and length is then prepared. The width of the strip 10 is adapted to the length of the tampon and the length of the strip according to the thickness of the expected diameter of the workpiece and later the expected diameter of the tampon itself.
Zatem se z neprikazano vrvico in trakom 20 za izdelavo ovojnice 2 tampona (Sl. 2) opremljen trak 10 za formiranje vpojnega jedra 1 okoli njegove prečne osi navija v ustrezen svitek, s čimer se dobi vsaj približno cilindričen surovec 100 širini traku 10 ustrezne dolžine in vsaj približno vnaprej določenega premera, ki se ga zatem v strokovnjakom znanem stroju 3, npr. enem izmed komercialno dostopnih strojev proizvajalca Ruggli AG iz Švice, s pomočjo primemo oblikovanih, po obodu omenjenega surovca 100 enakomerno razporejenih čeljusti 31, 32 stiska v njegovi radialni smeri ali vsaj približno v njegovi radialni smeri, s čimer se dobi tampon, ki je na enem koncu zožen in zaključen v zaobljeno konico, na nasprotnem koncu pa opremljen z neprikazano vrvico, ki olajša odstranitev tampona po uporabi. Oblika tako izdelanega tampona, ki je komercialno dostopen in tačas tudi splošno uporabljan, je kot taka znana iz uvodoma citirane patentne literature in je zato podrobneje ne opisujemo, niti kot taka ni posebej prikazana na skici.Thereafter, a non-shown string and a strip 20 for producing a tampon envelope 2 (Fig. 2) are provided with a strip 10 for forming an absorbent core 1 about its transverse axis, in order to obtain at least an approximately cylindrical blank 100 of the width of the strip 10 of the appropriate length and at least about a predetermined diameter, which is subsequently in a machine known in the art 3, e.g. one of the commercially available machines manufactured by Ruggli AG, Switzerland, using, by means of a suitably shaped, jaw-shaped 100, evenly spaced jaws 31, 32 in its radial direction, or at least approximately in its radial direction, to provide a buffer having one tapered at the end and rounded into a rounded tip, and at the opposite end fitted with a non-shown cord to facilitate removal of the tampon after use. The shape of the tampon thus manufactured, which is commercially available and also generally used, is as such known from the patent literature cited above, and is therefore not described in more detail, nor is it specifically shown in the drawing.
Zahvaljujoč omenjenemu radialnemu stiskanju je tako dobljen tampon (Sl. 1) po svojem obodu opremljen z ustreznim številom v obodni smeri med seboj enakomerno razmaknjenih in vsaj približno v vzdolžni smeri tampona potekajočih žlebov 1Γ, 12', 13', 14', 15', 16', 17', 18', pri čemer je med vsakokrat sosednjima žleboma 1Γ, 12', 13', 14', 15', 16', 17', 18', na voljo po eno rebro 11, 12, 13, 14, 15, 16, 17, 18 s konveksno t.j. blago usločeno oz. izbočeno zunanjo površino 110, 120, 130, 140, 150, 160, 170, 180. V prikazanem primeru tampona po Sl. 1 je na površini tampona na voljo po osem žlebov 1Γ, 12', 13', 14', 15', 16', 17', 18' in reber 11, 12, 13, 14, 15, 16, 17, 18, pri čemer se vsakokrat sosednji rebri 11, 12, 13, 14, 15, 16, 17, 18 v območju svojih bočnih površin lahko med seboj dotikata. V osrednjem območju 19 tampona je omenjeno vpojno jedro 1 izrazito komprimirano. Strokovnjaku bo razumljivo, daje število žlebov IT, 12', 13', 14', 15', 16', 17', 18' lahko tudi drugačno in v splošnem lahko znaša od 2 do 10, po izbiri pa celo več.Thanks to the said radial compression, the resulting tampon (Fig. 1) is provided at its circumference with an appropriate number in the circumferential direction, spaced evenly from one another and at least approximately in the longitudinal direction of the tampon of the running grooves 1Γ, 12 ', 13', 14 ', 15', 16 ', 17', 18 ', with 1Γ, 12', 13 ', 14', 15 ', 16', 17 ', 18', respectively, of each groove adjacent to each other, each having one rib 11, 12, 13. 14, 15, 16, 17, 18 s convex ie goods contracted or. convex outer surface 110, 120, 130, 140, 150, 160, 170, 180. In the shown example, the tampon according to FIG. 1, eight grooves 1Γ, 12 ', 13', 14 ', 15', 16 ', 17', 18 'and ribs 11, 12, 13, 14, 15, 16, 17, 18 are available on the pad surface. whereby the adjacent ribs 11, 12, 13, 14, 15, 16, 17, 18 in each area of their lateral surfaces may contact each other. In the central region 19 of the tampon, said absorbent core 1 is highly compressed. It will be understood by one skilled in the art that the number of grooves IT, 12 ', 13', 14 ', 15', 16 ', 17', 18 'may also be different and may generally be from 2 to 10, and optionally even more.
Kot je že bilo navedeno, je pri tamponu po izumu omenjeno vpojno jedro 1 po svojem celotnem obodu obdano z omenjeno ovojnico 2 tampona. To pomeni, daje • · omenjena ovojnica 2, ki je po celotnem obodu tampona vključno z lokacijo ustreznega spoja v bistvu neprekinjena, na voljo tako v območju omenjenih žlebov 1Γ, 12', 13', 14', 15', 16', 17', 18', kot tudi v območju omenjenih reber 11, 12, 13, 14, 15, 16, 17, 18 vključno z njihovimi konveksnimi zunanjimi površinami 110, 120, 130, 140, 150, 160, 170, 180, ki vzajemno tvorijo vsaj približno cilindrično zunanjo površino tampona. Predhodno opisana vlaknovina, iz katere sestoji ovojnica 2, kot taka nudi ustrezne predispozicije za zagotavljanje pričakovana drsnosti zunanje površine tampona, vendar kot taka ni glajena ali drugače obdelana, tako da je njen torni koeficient v surovem stanju še vedno razmeroma visok, vendar pa je po drugi strani v takem stanju tudi njena prepustnost za tekočino še vedno izvrstna.As previously stated, in the tampon of the invention, said absorbent core 1 is surrounded by said tampon envelope 2 along its entire circumference. This means that • · said envelope 2, which is substantially continuous throughout the circumference of the tampon including the location of the corresponding joint, is thus available within said grooves 1Γ, 12 ', 13', 14 ', 15', 16 ', 17 ', 18', as well as in the range of said ribs 11, 12, 13, 14, 15, 16, 17, 18 including their convex outer surfaces 110, 120, 130, 140, 150, 160, 170, 180, reciprocating they form at least approximately the cylindrical outer surface of the tampon. The fiber described previously, consisting of envelope 2, as such, provides adequate predisposition to provide the expected sliding of the outer surface of the tampon, but as such is not smoothed or otherwise machined, so that its friction coefficient in the raw state is still relatively high, on the other hand, its permeability to the liquid is still excellent in this state.
Z namenom, da bi zagotovili pričakovano drsnost oz. primemo nizek torni koeficient na zunanji površini tampona, se med izdelavo tampona po omenjenem radialnem stiskanju surovca 100 s pomočjo čeljusti 31, 32 (Sl. 3) tako dobljen tampon, kije že opremljen z žlebovi 1Γ, 12', 13', 14', 15', 16', 17', 18' in rebri 11, 12, 13, 14, 15, 16, 17, 18 s konveksnimi zunanjimi površinami 110, 120, 130, 140, 150, 160, 170, 180 in pri katerem je vpojno jedro 1 po celotnem obodu tampona obdano z ovojnico 2, neposredno po stiskanju v radialni smeri vodi skozi konusno odprtino 330 primerno segrete matrice 33. Omenjena matrica 33 je v odvisnosti od vsakokrat izbrane sestave oz. kombinacije vlaknovine ovojnice 2 v prikazanem primeru po Sl. 3 s pomočjo električnega grelnika 34 segreta do te mere, da temperatura na površini konusne odprtine 330 znaša od 120°C do 180°C, prednostno pa od 122°C do 148°C.In order to provide the expected slippage or. a low friction coefficient is received on the outer surface of the tampon, while producing the tampon after said radial pressing of the workpiece 100 by means of jaws 31, 32 (Fig. 3), a tampon is thus obtained, which is already provided with grooves 1Γ, 12 ', 13', 14 ', 15 ', 16', 17 ', 18' and ribs 11, 12, 13, 14, 15, 16, 17, 18 with convex outer surfaces 110, 120, 130, 140, 150, 160, 170, 180 and in which the absorbent core 1 is surrounded by the envelope 2 along the entire circumference of the tampon, immediately after pressing in the radial direction through a conical opening 330 of a suitably heated die 33. Said die 33 depends on the composition or design chosen at each time. combinations of fiber envelope 2 in the example shown in FIG. 3 is heated to the extent that the temperature at the surface of the conical opening 330 ranges from 120 ° C to 180 ° C, preferably from 122 ° C to 148 ° C, by means of an electric heater 34.
S tem, ko se predhodno že oblikovan tampon npr. s pomočjo trna 35 vodi skozi konusno odprtino 330 segrete matrice 33, so v stiku s površino omenjene konusne odprtine 330 matrice 33 zgolj oz. izključno konveksne zunanje površine 110, 120, 130, 140, 150, 160, 170, 180 reber 11, 12, 13, 14, 15, 16, 17, 18. Zahvaljujoč omenjeni sestavi ovojnice 2 tampona, namreč vlaknom z jedrom iz PE in ovojnico posameznega vlakna iz PES, ali mešanice enokomponentnih vlaken iz PES in PE, med izdelavo tampona po izumu pri temperaturi 122°C do 148°C, v splošnem od 120°C do 180°C, pride do plastifikacije PE vlaken ali PE komponente vlaken ovojnice 2 tampona. Zahvaljujoč nadalje dejstvu, da je med vodenjem tampona skozi konusno odprtino 330 segrete matrice 33 tampon v območju svoje zunanje površine, namreč zunanje površine ovojnice 2, in torej v območju konveksnih zunanjih površin 110, 120, 130, 140, 150, 160, 170, 180 reber 11, 12, 13, 14, 15, 16, 17, 18 podvržen blagemu in enakomernemu pritisku proti površini ovojnice 2 v radialni smeri, namreč v smeri glede na tampon radialno navznoter, kar v kombinaciji z omenjeno plastifikacijo vlaken ovojnice 2 privede do glajenja ovojnice 2, vendar zgolj oz. izključno v območju omenjenih zunanjih površin 110, 120, 130, 140, 150, 160, 170, 180 reber 11, 12, 13, 14, 15, 16, 17, 18, medtem ko vlakninska struktura in oblika vlaken ovojnice 2 v vseh preostalih območjih po obodu tampona, namreč v območju bočnih površin reber 11, 12, 13, 14, 15, 16, 17, 18 in v območju žlebov 11', 12', 13', 14', 15', 16', 17', 18', ostane popolnoma nespremenjena, s čimer se v nazadnje omenjenih območjih ohrani njena izvrstna sposobnost prepuščanja tekočine v smeri proti vpojnemu jedru 1 tampona.By pre-forming a tampon e.g. by means of a mandrel 35 leads through the tapered opening 330 of the heated die 33, in contact with the surface of said tapered opening 330 of the die 33, only or. exclusively convex outer surfaces 110, 120, 130, 140, 150, 160, 170, 180 ribs 11, 12, 13, 14, 15, 16, 17, 18. Thanks to the aforementioned composition of the envelope 2 of the pad, namely the PE core core and the envelope of a single PES fiber, or a mixture of single-component fibers of PES and PE, during the manufacture of the tampon of the invention at a temperature of 122 ° C to 148 ° C, generally 120 ° C to 180 ° C, plasticisation of the PE fibers or PE fiber component occurs envelopes 2 tampons. Owing to the fact that while guiding the tampon through the conical opening 330 of the heated die, there is a 33 tampon in the area of its outer surface, namely the outer surface of the envelope 2, and therefore in the area of the convex outer surfaces 110, 120, 130, 140, 150, 160, 170, 180 ribs 11, 12, 13, 14, 15, 16, 17, 18 are subjected to a slight and uniform pressure against the surface of the envelope 2 in the radial direction, namely in the direction relative to the buffer radially inwards, which in combination with said plasticization of the fibers of the envelope 2 leads to smoothing envelope 2, but only oz. exclusively in the area of said outer surfaces 110, 120, 130, 140, 150, 160, 170, 180 ribs 11, 12, 13, 14, 15, 16, 17, 18, while the fiber structure and fiber shape of envelope 2 in all other the areas around the circumference of the tampon, namely in the area of the lateral surfaces of the ribs 11, 12, 13, 14, 15, 16, 17, 18 and in the groove area 11 ', 12', 13 ', 14', 15 ', 16', 17 ' , 18 ', remains completely unchanged, thus maintaining its excellent ability to transfer fluid in the direction of the absorbent core 1 of the tampon in the aforementioned areas.
Claims (6)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SI201100068A SI23658B (en) | 2011-03-02 | 2011-03-02 | Tampon with enhanced sliding ability of its outer surface area and process for its manufacturing |
| PCT/SI2011/000015 WO2012053986A1 (en) | 2010-10-20 | 2011-03-23 | Hygienic tampon with improved sliding ability and method for manufacturing thereof |
| EP11724474.9A EP2629726B1 (en) | 2010-10-20 | 2011-03-23 | Hygienic tampon with improved sliding ability and method for manufacturing thereof |
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| SI201100068A SI23658B (en) | 2011-03-02 | 2011-03-02 | Tampon with enhanced sliding ability of its outer surface area and process for its manufacturing |
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| SI23658A true SI23658A (en) | 2012-09-28 |
| SI23658B SI23658B (en) | 2017-08-31 |
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