WO2001001909A1 - Domed tampon with surfactant-treated cover - Google Patents
Domed tampon with surfactant-treated cover Download PDFInfo
- Publication number
- WO2001001909A1 WO2001001909A1 PCT/US2000/013812 US0013812W WO0101909A1 WO 2001001909 A1 WO2001001909 A1 WO 2001001909A1 US 0013812 W US0013812 W US 0013812W WO 0101909 A1 WO0101909 A1 WO 0101909A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- tampon
- web
- cover
- melting point
- point temperature
- Prior art date
Links
- 239000004094 surface-active agent Substances 0.000 title claims 4
- 239000002250 absorbent Substances 0.000 claims abstract description 44
- 230000002745 absorbent Effects 0.000 claims abstract description 44
- 239000002736 nonionic surfactant Substances 0.000 claims abstract description 31
- 238000000034 method Methods 0.000 claims abstract description 29
- 239000000463 material Substances 0.000 claims description 25
- 238000002844 melting Methods 0.000 claims description 22
- 230000008018 melting Effects 0.000 claims description 22
- -1 polyoxyethylene Polymers 0.000 claims description 22
- 239000000835 fiber Substances 0.000 claims description 17
- 239000004033 plastic Substances 0.000 claims description 17
- 229920003023 plastic Polymers 0.000 claims description 17
- 239000011248 coating agent Substances 0.000 claims description 16
- 238000000576 coating method Methods 0.000 claims description 16
- 229920001169 thermoplastic Polymers 0.000 claims description 16
- 239000004416 thermosoftening plastic Substances 0.000 claims description 16
- 229920001214 Polysorbate 60 Polymers 0.000 claims description 12
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 9
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 8
- 239000000194 fatty acid Substances 0.000 claims description 8
- 229930195729 fatty acid Natural products 0.000 claims description 8
- 150000005215 alkyl ethers Chemical class 0.000 claims description 7
- 150000002009 diols Chemical class 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims description 5
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 4
- 239000002202 Polyethylene glycol Substances 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 claims description 4
- 230000001070 adhesive effect Effects 0.000 claims description 4
- 230000001747 exhibiting effect Effects 0.000 claims description 4
- 150000004665 fatty acids Chemical class 0.000 claims description 4
- 229920001223 polyethylene glycol Polymers 0.000 claims description 4
- 229920001213 Polysorbate 20 Polymers 0.000 claims description 3
- LWZFANDGMFTDAV-BURFUSLBSA-N [(2r)-2-[(2r,3r,4s)-3,4-dihydroxyoxolan-2-yl]-2-hydroxyethyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O LWZFANDGMFTDAV-BURFUSLBSA-N 0.000 claims description 3
- 239000001816 polyoxyethylene sorbitan tristearate Substances 0.000 claims description 3
- 235000010988 polyoxyethylene sorbitan tristearate Nutrition 0.000 claims description 3
- 229950006451 sorbitan laurate Drugs 0.000 claims description 3
- 235000011067 sorbitan monolaureate Nutrition 0.000 claims description 3
- FFJCNSLCJOQHKM-CLFAGFIQSA-N (z)-1-[(z)-octadec-9-enoxy]octadec-9-ene Chemical compound CCCCCCCC\C=C/CCCCCCCCOCCCCCCCC\C=C/CCCCCCCC FFJCNSLCJOQHKM-CLFAGFIQSA-N 0.000 claims description 2
- NWGKJDSIEKMTRX-AAZCQSIUSA-N Sorbitan monooleate Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O NWGKJDSIEKMTRX-AAZCQSIUSA-N 0.000 claims description 2
- IYFATESGLOUGBX-YVNJGZBMSA-N Sorbitan monopalmitate Chemical compound CCCCCCCCCCCCCCCC(=O)OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O IYFATESGLOUGBX-YVNJGZBMSA-N 0.000 claims description 2
- HVUMOYIDDBPOLL-XWVZOOPGSA-N Sorbitan monostearate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O HVUMOYIDDBPOLL-XWVZOOPGSA-N 0.000 claims description 2
- 239000004147 Sorbitan trioleate Substances 0.000 claims description 2
- PRXRUNOAOLTIEF-ADSICKODSA-N Sorbitan trioleate Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OC[C@@H](OC(=O)CCCCCCC\C=C/CCCCCCCC)[C@H]1OC[C@H](O)[C@H]1OC(=O)CCCCCCC\C=C/CCCCCCCC PRXRUNOAOLTIEF-ADSICKODSA-N 0.000 claims description 2
- 229920000259 polyoxyethylene lauryl ether Polymers 0.000 claims description 2
- 229950004959 sorbitan oleate Drugs 0.000 claims description 2
- 229950003429 sorbitan palmitate Drugs 0.000 claims description 2
- 229950011392 sorbitan stearate Drugs 0.000 claims description 2
- 235000019337 sorbitan trioleate Nutrition 0.000 claims description 2
- 229960000391 sorbitan trioleate Drugs 0.000 claims description 2
- 239000006057 Non-nutritive feed additive Substances 0.000 claims 2
- 150000002170 ethers Chemical class 0.000 claims 2
- HBXWUCXDUUJDRB-UHFFFAOYSA-N 1-octadecoxyoctadecane Chemical compound CCCCCCCCCCCCCCCCCCOCCCCCCCCCCCCCCCCCC HBXWUCXDUUJDRB-UHFFFAOYSA-N 0.000 claims 1
- DTPCFIHYWYONMD-UHFFFAOYSA-N decaethylene glycol Polymers OCCOCCOCCOCCOCCOCCOCCOCCOCCOCCO DTPCFIHYWYONMD-UHFFFAOYSA-N 0.000 claims 1
- 238000003780 insertion Methods 0.000 claims 1
- 230000037431 insertion Effects 0.000 claims 1
- 238000003825 pressing Methods 0.000 claims 1
- 238000007789 sealing Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 4
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- 229920001131 Pulp (paper) Polymers 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 210000001124 body fluid Anatomy 0.000 description 2
- 239000010839 body fluid Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229920001451 polypropylene glycol Polymers 0.000 description 2
- 229920002994 synthetic fiber Polymers 0.000 description 2
- JNYAEWCLZODPBN-JGWLITMVSA-N (2r,3r,4s)-2-[(1r)-1,2-dihydroxyethyl]oxolane-3,4-diol Chemical class OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O JNYAEWCLZODPBN-JGWLITMVSA-N 0.000 description 1
- ILCOCZBHMDEIAI-UHFFFAOYSA-N 2-(2-octadecoxyethoxy)ethanol Chemical compound CCCCCCCCCCCCCCCCCCOCCOCCO ILCOCZBHMDEIAI-UHFFFAOYSA-N 0.000 description 1
- KWVPFECTOKLOBL-KTKRTIGZSA-N 2-[(z)-octadec-9-enoxy]ethanol Chemical compound CCCCCCCC\C=C/CCCCCCCCOCCO KWVPFECTOKLOBL-KTKRTIGZSA-N 0.000 description 1
- MGYUQZIGNZFZJS-KTKRTIGZSA-N 2-[2-[(z)-octadec-9-enoxy]ethoxy]ethanol Chemical compound CCCCCCCC\C=C/CCCCCCCCOCCOCCO MGYUQZIGNZFZJS-KTKRTIGZSA-N 0.000 description 1
- NLMKTBGFQGKQEV-UHFFFAOYSA-N 2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-(2-hexadecoxyethoxy)ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethanol Chemical compound CCCCCCCCCCCCCCCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCO NLMKTBGFQGKQEV-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 229920001219 Polysorbate 40 Polymers 0.000 description 1
- 229920002642 Polysorbate 65 Polymers 0.000 description 1
- 229920002651 Polysorbate 85 Polymers 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 239000011358 absorbing material Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 229940081620 ceteth-2 Drugs 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000011437 continuous method Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 210000004914 menses Anatomy 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 229940099570 oleth-2 Drugs 0.000 description 1
- 239000003415 peat Substances 0.000 description 1
- 229920001748 polybutylene Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 239000000256 polyoxyethylene sorbitan monolaurate Substances 0.000 description 1
- 235000010486 polyoxyethylene sorbitan monolaurate Nutrition 0.000 description 1
- 239000000244 polyoxyethylene sorbitan monooleate Substances 0.000 description 1
- 235000010482 polyoxyethylene sorbitan monooleate Nutrition 0.000 description 1
- 239000000249 polyoxyethylene sorbitan monopalmitate Substances 0.000 description 1
- 235000010483 polyoxyethylene sorbitan monopalmitate Nutrition 0.000 description 1
- 239000001818 polyoxyethylene sorbitan monostearate Substances 0.000 description 1
- 235000010989 polyoxyethylene sorbitan monostearate Nutrition 0.000 description 1
- 229920000136 polysorbate Polymers 0.000 description 1
- 229940068977 polysorbate 20 Drugs 0.000 description 1
- 229940101027 polysorbate 40 Drugs 0.000 description 1
- 229940113124 polysorbate 60 Drugs 0.000 description 1
- 229940099511 polysorbate 65 Drugs 0.000 description 1
- 229920000053 polysorbate 80 Polymers 0.000 description 1
- 229940068968 polysorbate 80 Drugs 0.000 description 1
- 229940113171 polysorbate 85 Drugs 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 229940098760 steareth-2 Drugs 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920000247 superabsorbent polymer Polymers 0.000 description 1
- 239000004583 superabsorbent polymers (SAPs) Substances 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 210000002700 urine Anatomy 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/20—Tampons, e.g. catamenial tampons; Accessories therefor
- A61F13/2082—Apparatus or processes of manufacturing
- A61F13/2085—Catamenial tampons
Definitions
- the present invention relates to a tampon comprising an absorbent body, having an introduction end and a withdrawal end, and a longitudinal main portion therebetween.
- the tampon further having a constriction at an end thereof.
- the tampon is substantially enclosed within a cover comprising fluid impervious plastic material in the form of a resilient three-dimensional web having a multiplicity of perforations said web comprises a nonionic surfactant on its outer surface, at least in the a portion corresponding to the constricted portion of the tampon.
- covers There are several types of covers that have been or are currently in use for tampons: woven fabrics, nonwoven fabrics, apertured films, reticulated films, polymer nets, and the like.
- Several of the proposed tampon covers have incorporated features that have made them effective in heat sealing operations to attach them to the absorbent structure of the tampon and/or to other portions of the covers themselves.
- processes subsequent to the attachment of the cover to the absorbent structure can result in undesired additional sealing of the covers. Therefore, the covers have tended not to extend into regions that are further manipulated, such as subsequent dome-forming steps.
- tampon cover that is heat-sealable, but that does not extend substantially into a dome-shaped introduction end is described in Friese, US Pat. Nos. 4,816,100; 4,836,450; and 4,859,273.
- Another example is sold as the o.b. ® line of tampons, available in applicator and digital form from Personal Products Company of Skillman, New Jersey.
- a tampon having an apertured film cover and being capable of expanding to a substantially cylindrical body without significant constriction at any restricted portion, especially, the outer introduction end and providing a reduction of frictional forces during introducing or withdrawal of the tampon from the body cavity and is processable in a commercially efficient manner.
- the present invention relates to a process for forming tampons having an absorbent structure substantially enclosed by an apertured film cover that has a nonionic surfactant at least partially applied to the cover.
- the process includes coating at least a portion of a web of fluid-impervious plastic material with a nonionic surfactant to form a coated web portion having a coating weight of less than about 0.5 grams/meter 2 ( "gsm" ) .
- An individual sheet comprising a coated sheet portion is separated from the web and attached to an absorbent structure.
- the absorbent structure is formed into a tampon blank wherein the individual sheet substantially encloses the tampon blank, forming a cover.
- the covered tampon blank is compressed in a press to form a substantially cylindrical, compressed tampon having a cover comprising the individual sheet .
- the compressed tampon is transferred to a further press, and at least a portion of the tampon covered by the coated sheet portion of the cover is further compressed to form a constricted portion having overlapping portions of the cover being folded upon each other in a substantially unbonded manner.
- the constricted portion is a dome-shaped introduction end of the tampon.
- the invention also relates to a tampon having a nonionic surfactant coated portion of its cover extending into a constricted portion having overlapping portions of the cover being folded upon each other in a substantially unbonded manner.
- the constricted portion is a dome-shaped introduction end of the tampon.
- Fig. 1 is a perspective view of a compressed tampon having a nonionic surfactant-coated cover.
- Fig. 2 is a perspective view of a compressed tampon of the present invention having a nonionic surfactant- coated cover extending substantially into a dome-shaped introduction end.
- Fig. 3 is an enlarged plan view of the introduction end of the tampon of Fig. 2.
- the present invention relates to a tampon 10 comprising an absorbent body 12, having an introduction end 14 and a withdrawal end 16, and a longitudinal main portion 18 therebetween.
- the tampon further has a constriction 20 at an end thereof.
- the tampon is substantially enclosed within a cover 22 comprising fluid impervious plastic material in the form of a resilient three-dimensional web having a multiplicity of perforations, said web comprises a nonionic surfactant on its outer surface, at least in a portion corresponding to the constricted portion of the tampon.
- a web of a fluid-impervious plastic material comprising a blend of at least two thermoplastic polymeric components, a continuous surface of a first thermoplastic polymeric component that exhibits a first melting point temperature and a dispersed surface of an immiscible second polymeric component that exhibits a second melting point temperature, lower than the first melting point temperature.
- the second thermoplastic polymeric component is capable of forming an adhesive bond between said plastic material and the absorbent body and between said first and second surfaces of the web.
- the circumferential surface of the absorbent body is completely covered and enclosed by said web preventing a loss of fibers and facilitating the introduction and withdrawal of the tampon into and out of the body cavity.
- the processing of the tampon is improved by the nonionic surfactant.
- the web has first and second surfaces, the first surface exhibiting said multiplicity of apertures therein, each of the fiber-like elements exhibiting a cross-section comprising a base portion in the plane of the first surface and a sidewall portion joined to each edge of the base portion, the sidewall portions extending generally in the direction of the second surface of the web, the intersecting sidewall portions being interconnected to one another intermediate the first and second surfaces of the web, the interconnected sidewall portions terminating substantially concurrently with one another in the plane of the second surface.
- the sidewall portions joined to each edge of the base portion and extending generally in the direction of the second surface of the web improve a mechanical interaction between said sidewall portion and the fiber material of the absorbent body, so that the cover is securely positioned at the outer surface of the absorbent body in its non-expanded condition and, particularly, also in its expanded position.
- the nonionic surfactant is preferably an ethoxylate.
- said ethoxylate is an ethoxylated fatty acid polyolester.
- said ethoxylate is an ethoxylated fatty acid sorbitan ester.
- a representative, non-limiting list of useful sorbitan esters includes polyoxyethylene sorbitan laurate (also known as Polysorbate 20 and 21) , polyoxyethylene sorbitan palmitate (also known as Polysorbate 40) , polyoxyethylene sorbitan stearate (also known as Polysorbate 60 and 61) , polyoxyethylene sorbitan tristearate (also known as Polysorbate 65) , polyoxyethylene sorbitan oleate (also known as Polysorbate 80 and 81) , and polyoxyethylene sorbitan trioleate (also known as Polysorbate 85) .
- polyoxyethylene-20-sorbitan monolaurate is most preferred.
- the ethoxylate is a polyoxyethylene alkyl ether.
- a representative, non-limiting list of useful polyoxyethylene alkyl ethers includes polyoxyethylene lauryl ether, polyoxyethylene stearyl ether (also known as Steareth-2, Steareth-10, and the like), polyoxyethylene cetyl ether (also known as Ceteth-2, Ceteth-10, and the like) , and polyoxyethylene oleyl ether (also known as Oleth-2, oleth-10, and the like) .
- polyoxyethylene stearyl ether is most preferred.
- the ethoxylate is an ether of an olefinic diol.
- a representative, non- limiting list of such olefinic diols useful in the present invention includes the following: polyethylene glycol, polypropylene glycol, polybutylene glycol, propylene glycol, and the like.
- the olefinic diols are preferably liquid at a temperature of less than about 35° C. This weight is typically dictated by their molecular weight. As used herein in the specification and claims, the term "molecular weight" refers to the number average molecular weight of a compound.
- the olefinic diol is polyethylene glycol, having a molecular weight of less than about 600, or polypropylene glycol, having a molecular weight of less than about 4,000. Most preferably, olefinic diol is polyethylene glycol, having an average molecular weight of less than about 600.
- nonionic surfactants used in the tampon and in its manufacture as described herein may be commercially available. Examples thereof are marketed under the registered trademarks "TWEEN” and “BRIJ” of ICI, Atlas Chemical Division, Wilmington, DE, USA.
- the nonionic surfactant is applied to the web at coating weights up to about 0.5 grams/meter 2 ("gsm"). More preferably, the coating weight is about 0.1 to about 0.4 gsm, and most preferably, it is applied at a coating weight of about 0.16 to about 0.36 gsm.
- the hydrophilic nonionic surfactant is applied to the cover at least on a portion of the tampon that is further compressed to form a constricted portion having overlapping portions of the cover folded upon each other in a substantially unbonded manner.
- the constricted portion is a dome-shaped introduction end of the tampon, and therefore, in a preferred embodiment, the coated portion of the cover of the tampon allows that overlapping portions of said cover are folded upon each other in a substantially unbonded manner on the introduction end and substantially prevents a bonding between the plastic web and the absorbent body.
- the nonionic surfactant can reduce the frictional forces of the tampon while introducing or removing the tampon into or out of the body cavity and during processing of the tampon.
- the tampon provided with the nonionic surfactant provides an improved fluid transfer across the cover. In this connection a dome-shaped introduction end of the tampon is especially preferable.
- an ejection force coaxially directed to the longitudinal axis of the pressed tampon as to eject said tampon from the press may amount to less than about 1000 N.
- the absorbent structure may be any absorbent means that is capable of absorbing and/or retaining liquids (e.g., menses and/or urine) .
- the absorbent structure can be manufactured in a wide variety of sizes and shapes and from a wide variety of liquid-absorbing materials.
- a representative, non-limiting list of useful materials includes cellulosic materials, such as rayon, cotton, wood pulp, creped cellulose wadding, tissue wraps and laminates, peat moss, and chemically stiffened, modified, or cross-linked cellulosic fibers; synthetic materials, such as polyester fibers, polyolefin fibers, absorbent foams, absorbent sponges, superabsorbent polymers, absorbent gelling materials; formed fibers, such as capillary channel fibers and multilimbed fibers; combinations of materials, such as synthetic fibers and wood pulp including coformed fibrous structures (e.g., those materials described in Anderson et al . , U.S. Patent No. 4,100,324); or any equivalent material or combinations of materials, or mixtures of these.
- cellulosic materials such as rayon, cotton, wood pulp, creped cellulose wadding, tissue wraps and laminates, peat moss, and chemically stiffened, modified, or cross-linked cellulosic fibers
- synthetic materials such as
- the absorbent structure comprises fibers.
- the fibers are relatively stiff.
- One type of fibers that is particularly useful in the practice of the present invention is multilimbed fibers, such as those disclosed in EP 301 874 (the fibers form fabrics having relatively high flexural rigidity) .
- These multilimbed fibers and other fibers having a sufficient stiffness may provide further benefits to the present invention, as they can contribute to expanding the constricted portion of the tampon due to their resiliency. This may overcome the constriction that may be a result of some minor, inconsequential bonds being formed between the cover and itself or other elements of the tampon.
- the cover 22 extends substantially into a constriction, such as a dome-shaped introduction end 14.
- This doming causes folds 24 and other deformations to occur in the cover 22 at the domed introduction end.
- the introduction end 14 of the tampon 10 can expand completely as soon as it is engaged by body fluid. This characteristic can be enhanced by the fact that said cover having overlapping portions 24 at the introduction end 14 of the tampon 10 is substantially not bonded to the absorbent structure 12, so that the absorbent body with its cover 22 can freely expand if engaged by body fluid.
- the invention also relates to a process for the manufacture of a tampon as disclosed above.
- the process includes coating at least a portion of a web of fluid-impervious plastic material with a nonionic surfactant to form a coated web portion having a coating weight of less than about 0.5 gsm.
- An individual sheet comprising a coated sheet portion is separated from the web and attached to an absorbent structure. It may be attached generally as disclosed in Friese, US Pat. No. 4,816,100, or as disclosed in US Ser. No.
- the absorbent structure is formed into a tampon blank wherein the individual sheet substantially encloses the tampon blank, forming a cover.
- the covered tampon blank is compressed in a press to form a substantially cylindrical, compressed tampon 10 having a cover 22 comprising the individual sheet.
- the compressed tampon 10 is transferred to a further press, and at least a portion of the tampon 10 substantially covered by the coated sheet portion of the cover 22 is further compressed to form a constricted portion having overlapping portions 24 of the cover 22 being folded upon each other in a substantially unbonded manner.
- the constricted portion is a dome-shaped introduction end 14 of the tampon 10.
- the application of the nonionic surfactant is also sufficient to reduce the ejection force of the compressed tampon from the press to less than about 1000 N.
- the forming of the constriction such as a dome-shaped introduction end of the tampon, that is at least partially covered by the coated web, as one step during the process of manufacturing the tampon could be realized without negatively affecting the effectiveness of the tampon with regard to its absorption capacity and absorption velocity. This is because any undesired bonding of the cover material to itself or to the material of the absorbent body is substantially prevented.
- the production capacity could be enhanced by the fact that the hydrophilic nonionic surfactant applied less than about 0.5 gsm is sufficient for the realization of the present invention.
- the immiscible blend of thermoplastic polymeric components having different melting point temperatures provides the advantage that the plastic material retains its structure when the lower melting point component is sealed to other portions of the cover and/or to other elements of the tampon in the formation of the tampon blank.
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00932612A EP1225862A1 (en) | 1999-06-30 | 2000-05-19 | Domed tampon with surfactant-treated cover |
AU50308/00A AU5030800A (en) | 1999-06-30 | 2000-05-19 | Domed tampon with surfactant-treated cover |
CA002387120A CA2387120A1 (en) | 1999-06-30 | 2000-05-19 | Domed tampon with surfactant-treated cover |
NO20021901A NO20021901D0 (en) | 1999-06-30 | 2002-04-22 | Dome-shaped tampon with surfactant-treated cover |
AU2005222565A AU2005222565B2 (en) | 1999-06-30 | 2005-10-14 | Domed tampon with surfactant-treated cover |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US34376099A | 1999-06-30 | 1999-06-30 | |
US09/343,760 | 1999-06-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001001909A1 true WO2001001909A1 (en) | 2001-01-11 |
Family
ID=23347539
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2000/013812 WO2001001909A1 (en) | 1999-06-30 | 2000-05-19 | Domed tampon with surfactant-treated cover |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP1225862A1 (en) |
AR (1) | AR025190A1 (en) |
AU (2) | AU5030800A (en) |
CA (1) | CA2387120A1 (en) |
NO (1) | NO20021901D0 (en) |
WO (1) | WO2001001909A1 (en) |
ZA (1) | ZA200202581B (en) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002070026A1 (en) * | 2000-12-21 | 2002-09-12 | Mcneil-Ppc, Inc. | Apertured polymeric film web with surfactant mixture additive |
WO2002049686A3 (en) * | 2000-12-21 | 2002-11-21 | Mcneil Ppc Inc | Apertured polymeric film web with diol/surfactant additive |
WO2003079947A1 (en) * | 2002-03-18 | 2003-10-02 | The Procter & Gamble Company | Shaped tampon |
WO2005046548A1 (en) * | 2003-11-04 | 2005-05-26 | The Procter & Gamble Company | Substantially serpentine shaped tampon with varying density regions |
WO2008090562A1 (en) * | 2007-01-25 | 2008-07-31 | Rostam Ltd. | Tampon covers |
US7589249B2 (en) | 2000-02-16 | 2009-09-15 | Mcneil-Ppc, Inc. | Multiple zone apertured web |
US7977532B2 (en) | 2002-09-05 | 2011-07-12 | The Procter & Gamble Company | Tampon with clean appearance post use |
EP2345431A2 (en) | 2002-06-11 | 2011-07-20 | Basf Se | Method for producing esters from polyalcohols |
US8211078B2 (en) | 2005-02-17 | 2012-07-03 | The Procter And Gamble Company | Sanitary napkins capable of taking complex three-dimensional shape in use |
US8221371B2 (en) | 2006-10-12 | 2012-07-17 | Mcneil-Ppc, Inc. | Wrapper sealing process and article |
US9579238B2 (en) | 2005-02-17 | 2017-02-28 | The Procter & Gamble Company | Sanitary napkins capable of taking complex three-dimensional shape in use |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3683912A (en) * | 1970-04-28 | 1972-08-15 | Kimberly Clark Co | Absorbent tampon |
US4435172A (en) * | 1982-09-22 | 1984-03-06 | The Dow Chemical Company | Absorbent article having enhanced blood absorption |
US5693037A (en) * | 1995-04-21 | 1997-12-02 | The Procter & Gamble Company | Absorbent articles having improved surfactant-treated hydrophilic topsheets |
US5909884A (en) * | 1995-04-27 | 1999-06-08 | Schwankhart; Gerhard | Process and apparatus for continuous production of length portions from a strand of fluid-absorbing material |
-
2000
- 2000-05-19 WO PCT/US2000/013812 patent/WO2001001909A1/en active Application Filing
- 2000-05-19 AU AU50308/00A patent/AU5030800A/en not_active Abandoned
- 2000-05-19 CA CA002387120A patent/CA2387120A1/en not_active Abandoned
- 2000-05-19 EP EP00932612A patent/EP1225862A1/en not_active Withdrawn
- 2000-06-29 AR ARP000103315 patent/AR025190A1/en unknown
-
2002
- 2002-04-02 ZA ZA200202581A patent/ZA200202581B/en unknown
- 2002-04-22 NO NO20021901A patent/NO20021901D0/en not_active Application Discontinuation
-
2005
- 2005-10-14 AU AU2005222565A patent/AU2005222565B2/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3683912A (en) * | 1970-04-28 | 1972-08-15 | Kimberly Clark Co | Absorbent tampon |
US4435172A (en) * | 1982-09-22 | 1984-03-06 | The Dow Chemical Company | Absorbent article having enhanced blood absorption |
US5693037A (en) * | 1995-04-21 | 1997-12-02 | The Procter & Gamble Company | Absorbent articles having improved surfactant-treated hydrophilic topsheets |
US5909884A (en) * | 1995-04-27 | 1999-06-08 | Schwankhart; Gerhard | Process and apparatus for continuous production of length portions from a strand of fluid-absorbing material |
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7589249B2 (en) | 2000-02-16 | 2009-09-15 | Mcneil-Ppc, Inc. | Multiple zone apertured web |
WO2002070026A1 (en) * | 2000-12-21 | 2002-09-12 | Mcneil-Ppc, Inc. | Apertured polymeric film web with surfactant mixture additive |
WO2002049686A3 (en) * | 2000-12-21 | 2002-11-21 | Mcneil Ppc Inc | Apertured polymeric film web with diol/surfactant additive |
US6570055B2 (en) | 2000-12-21 | 2003-05-27 | Mcneil-Ppc, Inc | Apertured polymeric film web with surfactant mixture additive |
US6743965B2 (en) | 2000-12-21 | 2004-06-01 | Mcneil-Ppc, Inc. | Apertured polymeric film web with diol/surfactant additive |
WO2003079947A1 (en) * | 2002-03-18 | 2003-10-02 | The Procter & Gamble Company | Shaped tampon |
EP2345432A2 (en) | 2002-06-11 | 2011-07-20 | Basf Se | Method for producing esters from polyalcohols |
EP2345431A2 (en) | 2002-06-11 | 2011-07-20 | Basf Se | Method for producing esters from polyalcohols |
US7977532B2 (en) | 2002-09-05 | 2011-07-12 | The Procter & Gamble Company | Tampon with clean appearance post use |
US8475425B2 (en) | 2002-09-05 | 2013-07-02 | The Procter & Gamble Company | Tampon with clean appearance post use |
US9138355B2 (en) | 2002-09-05 | 2015-09-22 | The Procter & Gamble Company | Tampon with clean appearance post use |
WO2005046548A1 (en) * | 2003-11-04 | 2005-05-26 | The Procter & Gamble Company | Substantially serpentine shaped tampon with varying density regions |
US8211078B2 (en) | 2005-02-17 | 2012-07-03 | The Procter And Gamble Company | Sanitary napkins capable of taking complex three-dimensional shape in use |
US8702668B2 (en) | 2005-02-17 | 2014-04-22 | The Procter And Gamble Company | Sanitary napkins capable of taking complex three-dimensional shape in use |
US9579238B2 (en) | 2005-02-17 | 2017-02-28 | The Procter & Gamble Company | Sanitary napkins capable of taking complex three-dimensional shape in use |
US10568781B2 (en) | 2005-02-17 | 2020-02-25 | The Procter & Gamble Company | Sanitary napkins capable of taking complex three-dimensional shape in use |
US8221371B2 (en) | 2006-10-12 | 2012-07-17 | Mcneil-Ppc, Inc. | Wrapper sealing process and article |
WO2008090562A1 (en) * | 2007-01-25 | 2008-07-31 | Rostam Ltd. | Tampon covers |
Also Published As
Publication number | Publication date |
---|---|
AU2005222565B2 (en) | 2009-07-02 |
ZA200202581B (en) | 2003-09-23 |
AU2005222565A1 (en) | 2005-11-10 |
NO20021901L (en) | 2002-04-22 |
EP1225862A1 (en) | 2002-07-31 |
CA2387120A1 (en) | 2001-01-11 |
NO20021901D0 (en) | 2002-04-22 |
AR025190A1 (en) | 2002-11-13 |
AU5030800A (en) | 2001-01-22 |
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