SI23496A - Hygienic tampon with enhanced sliding ability of its outer surface and process for its production - Google Patents
Hygienic tampon with enhanced sliding ability of its outer surface and process for its production Download PDFInfo
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- SI23496A SI23496A SI201000333A SI201000333A SI23496A SI 23496 A SI23496 A SI 23496A SI 201000333 A SI201000333 A SI 201000333A SI 201000333 A SI201000333 A SI 201000333A SI 23496 A SI23496 A SI 23496A
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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 much 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, ki je 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.
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 • ·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 this type of tampon is out ·
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.The expected ability to retain fluid indicates 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 undesirable 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. Se 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 the compression, at least in the radial direction on its surface, such a tampon is provided with a certain number of circumferentially spaced radial grooves in the circumferential direction of the tampon, extending at least approximately parallel and at least approximately in the longitudinal direction of the tampon or at an angle at a given 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 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 na temperaturo v območju plastifikacije termoplastičnega gradiva vlaken ob sočasnem zagotavljanju enakomernega blagega pritiska proti omenjeni zunanji površini ovojnice v radialni smeri tampona.Accordingly, from a mixture of fibers of which at least a certain proportion is thermoplastic fibers, the envelope in the region of the convex outer surfaces of said ribs on its outer surface is smoothed by heating the thermoplastic fibers to a temperature in the area of plasticization of the thermoplastic fiber material while providing a uniformly gentle pressure against said the outer surface of the envelope in the radial direction of the tampon.
V skladu z enim od primerov izvedbe je iz mešanice vlaken, namreč iz vlaken iz poliestra PES in vlaken iz polietilena PE visoke gostote v razmerju PE : PES = 36% : 66% do PE : PES = 50% : 50%, pri čemer gostota take dvokomponentne vlaknovine znaša 12 do 20 g/m2, prednostno pa približno 16 g/m2, sestoječa ovojnica v območju konveksnih zunanjih površin omenjenih reber glajena zahvaljujoč plastificiranju polietilenskih (PE) vlaken pri temperaturi od 120°C do 160°C, prednostno pa od 122°C do 148°C in sočasnemu podvrženju tako plastificiranih vlaken na zunanji površini ovojnice blagemu in enakomernemu pritisku , ki glede na tampon deluje v smeri radialno navznoter.According to one embodiment, a mixture of fibers, namely PES polyester fibers and high-density polyethylene PE fibers, in the ratio PE: PES = 36%: 66% to PE: PES = 50%: 50%, wherein the density such two-component fibers are 12 to 20 g / m 2 , preferably about 16 g / m 2 , the envelope in the region of the convex outer surfaces of said ribs being smoothed by plasticizing polyethylene (PE) fibers at a temperature of 120 ° C to 160 ° C, preferably from 122 ° C to 148 ° C, and at the same time the coated fibers so coated on the outer surface of the envelope with a gentle and uniform pressure that acts radially inwards with respect to the buffer.
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 del vlaken predstavljajo termoplastična sintetična vlakna;- preparing a layer of non-woven fiber of suitable thickness for the manufacture of an envelope in which the fiber composition is so selected that 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 primed molded jaws, thereby optionally forming at one end with a narrowed and slightly rounded tip terminated, and generally at least approximately a cylindrical tampon, on the surface of which the number of said pressing jaws is imprinted with an appropriate number in the circumferential directions of the tampon of radially grooved spacers, spaced at least approximately parallel and at least approximately in the longitudinal direction of the tampon, or obliquely at a certain angle with respect to the longitudinal axis of the tampon, such that one rib with slightly curved ribs is available at each adjacent groove , a convex outer surface such that the convex surfaces of said ribs form at least an approximately cylindrical outer surface of the tampon, and
- gladenja 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 exclusively 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 die in the axial direction thereof, thereby subjecting the tampon formed in the area of said outer surfaces of the ribs to a slight uniform pressure in the radial inward direction .
Po izumu je predvideno, da se omenjeni korak gladenja zunanje površine tampona, namreč gladenja zunanje površine vsaj deloma iz enakomerno po površini razporejenih termoplastičnih vlaken sestoječe ovojnice zaradi zagotavljanja pričakovane drsnosti na zunanji pobršini tampona vrši na tak način, da se v ovojnici razpoložljiva termoplastična vlakna izključno v območjih konveksnih zunanjih površin na rebrih 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, it is provided that said smoothing of the outer surface of the tampon, namely smoothing of the outer surface at least partially of thermoplastic fibers of the standing envelope distributed evenly over the surface, in order to provide the expected sliding on the outer surface of the tampon so that thermoplastic fibers available exclusively in the envelope in the areas of convex outer surfaces on the ribs, it is heated to the plasticization temperature of said thermoplastic fibers, and the plasticized fibers are thus subjected to said slight uniform pressure in the radial inward direction.
Pri prednostni izvedbi postopka po izumu se iz mešanice vlaken, namreč iz vlaken iz poliestra PES in vlaken iz polietilena PE visoke gostote v razmerju PE : PES = 36% : 66% do PE : PES = 50% : 50%, 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 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 slednja segreje na temperaturo od 120°C do 160°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 according to the invention, a mixture of fibers, namely, PES polyester fibers and high density PE polyethylene fibers, in the ratio PE: PES = 36%: 66% to PE: PES = 50%: 50%, the density being such of the two-component fibers is from 12 to 20 g / m, preferably about 16 g / m, the standing envelope in the area of convex outer surfaces of said ribs on its outer surface is smoothed by heating the thermoplastic fibers to a temperature in the plasticization area of the polyethylene PE fibers while providing uniformly gentle pressure against said outer surface of the envelope in the radial direction of the tampon. In order to plasticize the polyethylene (PE) fibers, the latter is heated to a temperature of 120 ° C to 160 ° C, preferably 122 ° C to 148 ° C, after which the plasticized fibers are subjected to a gentle and uniform pressure on the outer surface of the envelope. with respect to the buffer, it acts radially inwards.
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 gladenje 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 of the outer surface of the tampon ribs.
Tampon po izumu (Sl. 1), ki je lahko digitalni tampon, predviden za vstavljanje s prsti, ali aplikatorski tampon, ki je predviden za vstavljanje s pomočjo strokovnjakom znane priprave t.j. tako imenovanega 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 can be a digital tampon intended for insertion by the fingers, or an applicator tampon intended for insertion by a person skilled in the art, e.g. the so-called applicator j, is basically made of 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 skoti omenjeno plast vlaken, še zlasti pa zagotavljajo čim boljšo drsnost in torej čim nižji torni koeficient na sami zunanji površini tampona. Po izumu je predvidena izdelava ovojnice 2 iz termoplastičnih vlaken ali iz mešanice vlaken, od katerih vsaj določen delež predstavljajo termoplastična vlakna. V primeru tampona po Sl. 1 gre za mešanico vlaken iz poliestra (PES) in vlaken iz polietilena (PE) visoke gostote v razmerju PE : PES = 36% : 66% do PE : PES = 50% : 50%, pri čemer gostota take vlaknovine znaša 12 do 20 g/m2, prednostno pa približno 16 g/m2.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 passage through the 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. According to the invention, the envelope 2 is made of thermoplastic fibers or of a mixture of fibers, of which at least a certain proportion is thermoplastic fibers. In the case of the tampon according to FIG. 1 is a mixture of high density polyester (PES) fibers and high density polyethylene (PE) fibers in the ratio PE: PES = 36%: 66% to PE: PES = 50%: 50%, with a density of such fiber being 12 to 20 g / m 2 , preferably about 16 g / m 2 .
• ·• ·
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 (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 tape 10 for forming an absorbent core 1 about its transverse axis is threaded into a suitable coil by means of a non-shown string and a strip 20 for making an envelope 2 (Fig. 2), thus giving at least approximately a cylindrical blank 100 to a width of the strip 10 of the appropriate length and at least approximately a predetermined diameter, which is subsequently known 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 poThanks 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 example shown, the tampon after
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.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.
Kot je že bilo navedeno, je pri tamponu po izumu omenjeno vpojno jedro 1 po svojem celotnem obodu obdano z omenjeno ovojnico 2. To pomeni, da je 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 already stated, in the tampon according to the invention, said absorbent core 1 is surrounded by said envelope 2 throughout its circumference, i.e., said envelope 2, which is substantially continuous throughout the entire circumference of the tampon including the location of the corresponding joint, at available in the area of said grooves 1Γ, 12 ', 13', 14 ', 15', 16 ', 17', 18 ', as well as in the area of said ribs 11, 12, 13, 14, 15, 16, 17, 18 including their convex outer surfaces 110, 120, 130, 140, 150, 160, 170, 180, which mutually form at least an approximately 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 obdano z ovojnico 2, neposredno po stiskanju v radialni smeri vodi skozi • · konusno odprtino 330 primemo segrete matrice 33. Omenjena matrica 33 je v odvisnosti od vsakokrat izbrane 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 160°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, immediately after pressing in the radial direction, through • the conical opening 330, a heated die 33 is received. Said die 33 is, depending on the combination of the fiber envelope 2 chosen 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 160 ° 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 iz PE in PES vlaken, med izdelavo tampona po izumu pri temperaturi 122°C do 148°C pride do plastifikacije PE vlaken ovojnice 2. Zahvaljujoč nadalje dejstvu, daje 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 gladenja 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 mentioned composition of envelope 2 made of PE and PES fibers, during the manufacture of the buffer According to the invention, at a temperature of 122 ° C to 148 ° C, PE fibers of the envelope 2 are plasticized. Due to the fact that, while guiding the tampon through the tapered opening 330 of the heated die 33, the tampon is in the region of its outer surface, namely the outer surface of the envelope 2, and therefore in 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, viz. direction with respect to the buffer radially inward, which in combination with the aforementioned plasticization of the fibers of the envelope 2 leads to smoothing of the envelope 2, but only or. 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 remaining 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 |
|---|---|---|---|
| SI201000333A SI23496B (en) | 2010-10-20 | 2010-10-20 | Hygienic tampon with enhanced sliding ability of its outer surface and process for its production |
| EP11724474.9A EP2629726B1 (en) | 2010-10-20 | 2011-03-23 | Hygienic tampon with improved sliding ability and method for manufacturing thereof |
| PCT/SI2011/000015 WO2012053986A1 (en) | 2010-10-20 | 2011-03-23 | Hygienic tampon with improved sliding ability and method for manufacturing thereof |
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| SI201000333A SI23496B (en) | 2010-10-20 | 2010-10-20 | Hygienic tampon with enhanced sliding ability of its outer surface and process for its production |
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| SI23496A true SI23496A (en) | 2012-04-30 |
| SI23496B SI23496B (en) | 2018-03-30 |
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| SI201000333A SI23496B (en) | 2010-10-20 | 2010-10-20 | Hygienic tampon with enhanced sliding ability of its outer surface and process for its production |
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