CN1229090C

CN1229090C - Disposable cover for covering absorbent body

Info

Publication number: CN1229090C
Application number: CN 200310101098
Authority: CN
Inventors: 迪格维杰·雷瓦特; 卡洛斯·J·巴罗索; 莱瑟·M·海因斯; 彼得·莫里斯; 罗布·E·奥尔森; J·阿尔瓦罗·雷斯特里珀; 农纳·J·雷德瓦恩; 马克·D·西摩; 希洛基·希卡塔
Original assignee: Procter and Gamble Co
Current assignee: Procter and Gamble Co
Priority date: 1994-10-10
Filing date: 1995-09-29
Publication date: 2005-11-30
Anticipated expiration: 2015-09-29
Also published as: TR960297A2; PE3297A1; CN1496727A; WO1996010973A2; MX9702641A; BR9509296A; TW347324B; CN1148156C; WO1996010973A3; CN1165475A

Abstract

A disposable cover which, when used with an absorbent material, such as a pad of woven cloth, provides an absorbent article, such as as catamenial pad is disclosed. In a preferred embodiment, the disposable cover comprises a liquid pervious rewet barrier and an anti-stain barrier joined thereto. Preferably, the rewet barrier comprises a material having capillaries which allow bodily liquids to rapidly penetrate therethrough and the anti-stain barrier is provided in two portions, one of which is joined to each longitudinal edge of the rewet barrier. The disposable cover can also be provided with absorbent attachment means for securing the cover to the absorbent material and with garment attachment means for securing the assembly of the disposable cover and the absorbent material to a user's undergarment. Alternative embodiments of the invention can assume a pouch configuration. This alternative configuration is particularly useful if the absorbent material is in a form lacking significant cohesiveness, such as a tow of fibers.

Description

The disposable cover that is used for covering absorbent body

The application is that application is artificial: The Procter ﹠ Gamble Co, the applying date is: nineteen ninety-five JIUYUE 29 days, application number is: 95196338.4, name is called: the dividing an application of disposable cover that is used for covering absorbent body.

Technical field

The present invention relates to be used for the disposable cover of covering absorbent body, constitute an absorbent device together, diaper for example, the liner that the incontinent person uses, sanitary towel etc. by the moisture absorption body of this outer housing and its parcel.

Background technology

Absorbent device is used for receiving the liquid of discharging from health and they is contained in the hygroscopicity element of this absorbent device.In recent years, disposable hygroscopicity articles for use are developed, and for the wearer, performance is improved, and have replaced and can wash and reusable durable type absorbent device.

Although disposable absorbent article has had so many improvement, but as the absorbent device that can wash of woven one class owing to making some consumer feel economical and practical or owing to other reason, still be subjected to the favor of some consumers, although wear may be so uncomfortable for these articles for use.This uncomfortable reason is fully the liquid of discharging from wearer's body to be sent in these absorbent devices, thereby makes wearer's health still very wet, very dirty.Another major defect of the absorbent device of the woven type that can wash is that if be full of the liquid that is absorbed in the absorbent device of a woven type, then wearer's medicated clothing (as underwear) will be made dirty.Use the people of more early stage disposable absorbent article (as cotton type filler or other fibre bundle) also to be subjected to the puzzlement of same performance deficiency.

In order to reduce the caused ill effect of liquid Long contact time skin, produced a kind of disposable absorbent article a slice and Body contact, that can show surperficial greatly dry and comfortable top flat that has.Commercially available disposable absorbent article also has a liquid-tight egative film, by providing an interlayer to prevent wearer's the medicated clothing of making dirty between the absorbent portion of this disposable absorbent article and wearer's medicated clothing.Although top flat and liquid-tight egative film with Body contact that disposable absorbent article this improved are improved the performance of commercially available disposable absorbent article, those may select to use the wearer of the absorbent device of woven type not receive the benefit that improvement brought on this function.

Summary of the invention

Therefore, an object of the present invention is to provide a kind of top disposable cover of the moisture absorption product that can wash that can be added to easily as primary absorbent device one class of woven pad or other kind.Another object of the present invention is, utilize this disposable outer housing, by reduce with the liquid of contact skin, the dangerous of wearer's medicated clothing and by helping the moisture absorption body to keep a shape that is suitable for absorb body fluids to improve the serviceability of absorbent device reduces to make dirty.Another purpose of the present invention is to be enough to the user who uses the moisture absorption product that can wash is produced the low cost of captivation, to provide a kind of disposable outer housing that can improve the serviceability of the absorbent device that can wash.

Disposable cover of the present invention comprises: the rewetting interlayer that liquid can see through, described rewetting interlayer makes liquid can see through its whole thickness rapidly, this rewetting interlayer has an outside surface, an inside surface, and first and second relative vertical side, the at least a portion on described outside surface in use with wearer's Body contact, the at least a portion on described inside surface is towards described moisture absorption body, described rewetting interlayer has the capillary tube that some run through the taper of this rewetting interlayer, and these capillary tubies make liquid flow to described inside surface by this rewetting interlayer from described outside surface; A liquid-tight anti-dirty interlayer, described anti-dirty interlayer can prevent that liquid from seeing through its thickness, should anti-dirty interlayer has the second portion on first and the second vertical side that joins the rewetting interlayer on the first vertical side that joins the rewetting interlayer to, each part has an outside surface separately, an inside surface, and first and second relative vertical side, the at least a portion on described outside surface in use contacts with wearer's underwear, and at least a portion on described inside surface is towards described moisture absorption body; And second reinforcement of second vertical side of first reinforcement of first vertical side of close rewetting interlayer and close rewetting interlayer, each reinforcement has first and second relative vertical sides separately, described first vertical side of described first reinforcement is bonded on described first vertical side of described rewetting interlayer, and described second vertical side of described first reinforcement is bonded on described second vertical side of described first of described anti-dirty interlayer; Described second vertical side of described second reinforcement is bonded on described second vertical side of described rewetting interlayer, described first vertical side of described second reinforcement is bonded on described first vertical side of described second portion of described anti-dirty interlayer, described rewetting interlayer has two relative bases separately with described anti-dirty interlayer, described rewetting interlayer also has area and equates with the area of described anti-dirty interlayer and be covered with the first of described anti-dirty interlayer and along the second portion outside second vertical side of the described first that laterally reaches described anti-dirty interlayer, the described first of described rewetting interlayer and the described described first that prevents dirty interlayer on described first and second bases and first vertical side edge be bonded together.

Description of drawings

Although the back of this description is with having particularly pointed out and clearly show the claims that have been considered to constitute theme of the present invention, but it is believed that, by the description of doing below in conjunction with accompanying drawing, the present invention will be better understood, in these accompanying drawings, identical labelling is used to represent components identical in fact:

Fig. 1 is disposable cover embodiment of the present invention at the perspective view of supposition shape in the common use that is by on one's body the wearer time, in the face of reader's surface is the surface of being close to the wearer;

Fig. 2 is the plane graph of disposable cover embodiment of the present invention when being in deployed condition, and the surface outwardly of rewetting interlayer is facing to the reader;

Fig. 3 be along the 3-3 line cut open the disposable cover of getting of the present invention amplification sectional elevation;

Fig. 4 is the i.e. plane graph of a parcel bag of the first available embodiment of disposable cover of the present invention, for the structure that shows its bottom with partial cutaway except;

Fig. 5 be along the 5-5 line cut open the parcel bag of getting of the present invention amplification sectional elevation;

Fig. 6 is that second alternative embodiment of disposable cover of the present invention is the plane graph of another kind of parcel bag, for the structure that shows its bottom with partial cutaway except, in the face of reader's surface is surface towards wearer's underwear;

Fig. 7 be along the 7-7 line cut open alternative parcel bag of the present invention of getting amplification sectional elevation.

The specific embodiment

In this article, " absorbent device " vocabulary shows the article that absorb and hold body excretions, and or rather, wearer's health placement is pressed close in expression, is used for absorbing and holding the excremental article of discharging from this health.A preferred embodiment of the present invention is the disposable cover 20 that is used to wrap up moisture absorption body 10, and moisture absorption body 10 and disposable cover 20 constitute an absorbent device, menopad as shown in Figure 1 altogether.In this article, " menopad " vocabulary shows by the women and is through near the pudendum, normally is through the genito-urinary area outside, is used for absorbing and holds the article of the menses of discharging from wearer's health and other vaginal secretions (for example blood, menstruation, and urine).In this article, show from the outside can observable female sex organs for " pudendum " vocabulary.But, should be appreciated that the present invention also can be used for other absorbent device, the liner that uses of incontinent person for example, diaper, or the like.

As seen from Figure 1, disposable cover 20 of the present invention is wrapped in around the moisture absorption body 10 and with it and covers.Disposable cover 20 of the present invention preferably is bonded on the moisture absorption body 10 by means of moisture absorption body fixture 41 (as shown in Figure 2), although this joint not right and wrong have can not.Disposable outer housing 20 is preferably softish, and to the wearer's skin nonirritant.This disposable outer housing comprises anti-rewetting parts or the rewetting interlayer 22 that a liquid can see through, it makes body fluid (for example menstruation and/or urine) can see through its thickness easily, and can reduce this class I liquid I by backflow chance on the wearer's skin of this rewetting interlayer 22.A preferred embodiment of the rewetting interlayer 22 that this liquid can see through can be made by a kind of liquid-tight material, and the way of making is to make some to run through the capillary tube of its whole thickness in this liquid-tight material.Described capillary tube makes body excretions can run through these rewetting interlayer 22 circulations so that these body excretions are sent in the moisture absorption body 10.Hygroscopic outer housing 20 also comprises a liquid-tight anti-dirty interlayer 32, and the rewetting interlayer 22 that anti-dirty interlayer 32 and liquid can see through preferably is bonded together along their at least one vertical side.Preferably, as shown in Figure 2, anti-dirty interlayer 32 comprises two part 32A and 32B, and a vertical side of each part all joins on the vertical side of rewetting interlayer 22.Preferably, disposable cover 20 also comprises the inside lip-deep moisture absorption body fixture 41 of each part that is positioned at anti-dirty interlayer 32 and is positioned at the underwear fixture 43 on outer surface 34 of preventing dirty interlayer 32.Fixture 41 and 43 remains on moisture absorption body 10 and disposable cover 20 on the fixed position.

Fig. 2 is the plan view of disposable cover 20 of the present invention when being in flat, this disposable cover 20 in the face of the wearer or with the contacted part of wearer, promptly the outside surface 24 of rewetting interlayer 22 is towards the reader.Disposable cover 20 has two center lines, i.e. a longitudinal midline 100 and a transversal centerline 102.In this article, " vertically " vocabulary is shown in line, axle or a direction of aiming at (also promptly being parallel to) vertical plane generally on the plane of disposable cover 20, when disposable cover 20 was through on one's body, the health that described vertical plane is incited somebody to action wearer on one's feet was divided equally into left-half and right half part.In this article, " laterally " or " side direction ", these two speech can exchange, and their expressions are positioned at one of the plane of disposable cover 20 generally perpendicular to line, axle or direction longitudinally.From Fig. 2, also can see, disposable cover 20 comprises two ingredients, i.e. liquid that is used to reduce liquid and Body contact chance rewetting interlayer 22 that can see through and one wearer's the liquid-tight anti-dirty interlayer 32 of underwear that is used to prevent to make dirty.

As shown in Figure 2, rewetting interlayer 22 has two surfaces, i.e. an outside surface 24 and an inside surface 26, and at least a portion on outside surface 24 and wearer's Body contact, the part on inside surface 26 contacts with moisture absorption body 10.In this article, with rewetting interlayer 22 can with wearer's Body contact to transmit the part of liquid, for example the part between two reinforcements 42 is called and transmits district 25.Fig. 1 and Fig. 2 are that the angle from the outside surface 24 of rewetting interlayer 22 illustrates disposable cover 20.When wearing, the inside surface 26 of health that the wearer is pressed close on outside surface 24 then is positioned at the opposite side of rewetting interlayer 22.The part on inside surface 26 will be pressed close to moisture absorption body 10 and be placed.The remainder to inner surface of rewetting interlayer 22 contacts with anti-dirty interlayer 32.Form reinforcement 42.Rewetting interlayer 22 has a pair of vertical side 28 and 29.

In the simple embodiment of disposable cover 20, this disposable cover 20 includes only a rewetting interlayer 22.Can be wrapped in a moisture absorption body 10 with this simple outer housing.When this disposable cover 20 included only a rewetting interlayer 22, the surface area of this disposable cover 20 should be identical substantially with the surface area of the preferred embodiment of disposable cover 20 discussed in this article.That is, the length dimension l that the length dimension of this simple disposable cover 20 should will be discussed with the back is identical substantially, the width dimensions w that the width dimensions of this simple disposable cover 20 should will be discussed with the back ₁, w ₂, and w ₃Summation substantially identical.This disposable cover can also have the fixture that the back will be discussed.

This simple enforcement of the present invention has the many desirable advantage of the preferred embodiment of disposable cover 20.Specifically, when this embodiment and folding cloth type moisture absorption body combine when using, this coalition can be promoted the dry and comfortable degree of skin.The tendency that this embodiment has also reduced the folded structure distortion and undesirable deformation (for example when moisture absorption body 10 is made of a fibre bundle or fiberfill) takes place.It is believed that a back advantage improved moisture pick-up properties and reduced seepage.

Another preferred embodiment of disposable cover 20 comprises an anti-dirty interlayer 32 between moisture absorption body 10 and wearer's underwear.This embodiment prevents that from the underwear that moisture absorption body 10 flows to the wearer underwear from being made dirty by preventing body fluid.The size of this embodiment of the present invention should satisfy such condition: the part of moisture absorption body 10 is not covered, so that body fluid can flow in the moisture absorption body 10 by anti-dirty interlayer 32.The part role that this of moisture absorption body is not capped is identical with transmission district 25 roles of the preferred embodiments of the present invention shown in Figure 2.Therefore, the length dimension of the simple embodiment of this disposable cover 20 should be identical substantially with the length dimension l that the back will be discussed, and the width dimensions of this simple disposable cover 20 should guarantee the existence of the unmasked portion of moisture absorption body 10.Because this embodiment can not entirely wrap moisture absorption body 10, so, if the part of moisture absorption body is not wrapped, just needs and can will prevent that dirty interlayer 32 is fixed on the parts on the moisture absorption body 10.This moisture absorption body fixture is set on the surface of pasting moisture absorption body 10 of anti-dirty interlayer 32, preferably is provided with between two parties between two vertical sides of disposable cover 20.This simple embodiment of disposable cover 20 can also have and be used for disposable cover 20 assemblies and moisture absorption body 10 are fixed on parts on wearer's the underwear.The material that is suitable for making this simple embodiment is substantially the same with the material that is suitable for making the preferred embodiments of the present invention shown in Figure 2.The back will discuss these materials in more detail.

Yet disposable cover 20 of the present invention preferably not only comprises rewetting interlayer 22 but also comprise anti-dirty interlayer 32.Can will prevent that dirty interlayer 32 in vertical side 28,29 of rewetting interlayer 22 joins on the rewetting interlayer 22.In the preferred embodiments of the present invention shown in Figure 2, anti-dirty interlayer 32 comprises two parts, i.e. second portion 32B on the 32A of first on vertical side 29 that joins rewetting interlayer 22 to and the vertical side 28 that joins rewetting interlayer 22 to.Because the symmetry of these two parts is so add that with identical figure notation alphabetical A or B represent the identical parts in each part respectively.From Fig. 2, also can see, each part of anti-dirty interlayer 32 all has two surfaces, be outside surperficial 34A, 34B and inside surperficial 36A, 36B, when using this disposable cover 20, the part on the surface that each is outside contacts with wearer's underwear, and the part on the surface that each is inside contacts with moisture absorption body 10.Each part of anti-dirty interlayer 32 also has a pair of vertical side 38A, 38B and 39A, 39B respectively.

Fig. 3 marks the cross section that cuts open the disposable cover of getting 20 along the 3-3 line.As shown in Figure 3, rewetting interlayer 22 and anti-dirty interlayer 32 preferably are engaged with each other at least one zone in their vertical side.

Rewetting interlayer 22 is engaged with each other by means of fixture (not shown) as known in the art with anti-dirty interlayer 32 and is in the same place.In this article, " joint " speech is emphasized is by an element directly being attached on another element and this element directly is fixed on the structure on another element and intermediary element is attached on another element and this element is fixed on structure on another element indirectly by an element being attached on (or several) intermediary element again.In a preferred embodiment of the invention, rewetting interlayer 22 and anti-dirty interlayer 32 are joined directly each other.For example, rewetting is in the same place by means of binding agent is fixed to one another with anti-dirty interlayer 32 every leading 22.Binding agent can be one even successive adhesive coated, one patterned adhesive coated or by a series of independently lines, helix or point form adhesive coated.No. 4573986 patents such as the U.S. that on March 4th, 1986 was authorized people such as Minetola, authorized Sprague on October 7th, 1975, No. 3911173 patents such as the U.S. Jr., authorized No. 4785996 patent of the U.S. of people such as Ziecker on November 22nd, 1978 and authorized on June 27th, 1989 Werenicz No. 4842666 patent disclosure of the U.S. several typical bondings fix.These above-mentioned patents are all by this paper document incorporated by reference.The fixture that rewetting interlayer 22 and anti-dirty interlayer 32 are bonded together comprises that preferably at least one adds heating or do not add the seam of thermosetting by exerting pressure, and is referred to as tooled joint.Perhaps, fixing means can also be heat bonding, ultra-sonic welded, dynamic power machine connects or the combination of other suitable fixing means or these fixing means as known in the art.

Perhaps, rewetting interlayer 22 and the anti-dirty interlayer 32 that forms disposable cover 20 of the present invention that be bonded together is made of an independent material (for example single piece of material).In such embodiments, a first of this material is that liquid can see through, and the remainder of this material then is liquid-tight.For example, can on the middle body of a liquid-tight material, produce some capillary tubies.When disposable cover 20 was made of a single piece of material, the surface area of this disposable cover 20 should be identical substantially with the surface area of the preferred embodiment of disposable cover 20 discussed in this article.That is, the length dimension 1 that the length dimension of this simple disposable cover 20 should will be discussed with the back is identical substantially, the width dimensions w that the width dimensions of a this simple outer housing 20 should will be discussed with the back ₁, w ₂And w ₃Summation substantially identical.And the part that each liquid of this single piece of material embodiment can see through and the surface area of liquid-tight part should be identical substantially with the surface area of the corresponding part that is made of material independently.That is, the surface area of the part that liquid can see through should be identical substantially with the surface area of rewetting interlayer 22, and the surface area of liquid-tight part should be identical substantially with the surface area of anti-dirty interlayer 32.This embodiment of disposable cover 20 can also have the fixture that the back will be discussed.

Can see also that from Fig. 3 disposable cover 20 of the present invention preferably also has the reinforcement 42 of the vertical side 28,29 of each bar of the rewetting interlayer 22 that can see through near liquid.Reinforcement 42 constitutes a preferential broken line that limits the transmission district 25 of rewetting interlayer 22.Reinforcement 42 also constitute one adjacent with the edge that transmits district 25, can prevent that thereby the moisture absorption body from gathering into the supplementary structure of a branch of minimizing body fluid side leakage.

This disposable cover 20 can also have moisture absorption body fixture 41 and underwear fixture 43, the former is used to make moisture absorption body 10 to remain on a fixed position with respect to disposable cover 20, and the latter is used for making the assembly of being made up of disposable cover 20 of the present invention and moisture absorption body 10 to keep a suitable position at wearer's underwear.In preferred embodiment illustrated in figures 1 and 2, moisture absorption body fixture 41 is set on the position adjacent with 39B with two vertical side 39A on inside surperficial 36A, the 36B of anti-dirty interlayer 32.Underwear fixture 43 be set on the outside surperficial 34A of anti-dirty interlayer 32 or the 34B with two vertical side 39A and 39B in an adjacent position on, for example, be strip-type shown in Figure 2.Although fixture 41 and 43 is not really crucial parts for the function of disposable cover 20, but add that this base part can strengthen the reliability on disposable cover 20 performances, because they make disposable cover 20 can remain on respect to moisture absorption body 10 and wearer's health on the suitable orientation.

Moisture absorption body 10 can be made of any absorbent products that can absorb or hold body excretes liquid (for example menstruation and/or urine).As shown in Figure 1, moisture absorption body 10 has a body-facing surface 11 and the surface 13 towards underwear.Moisture absorption body 10 can be made into multiple size and dimension, and can be made by the multiple material that is common to the absorption liquid in sanitary towel and other absorbent device, is for example made by supatex fabric, tissue paper and wood fragments slurry (being referred to as the gas felt) class material.Moisture absorption body 10 also can be absorbed with the material of receiving fluids by other to be made, for example by woven, fibre bundle, (natural, synthetic or combine by natural and synthetic) and other materials similar that in developing country, may generally be used for absorbing and hold the liquid that health discharges make.

The rewetting interlayer that can see through liquid of disposable cover

The rewetting interlayer 22 that liquid can be able to be seen through is made multiple size and dimension (for example rectangle, ellipse, asymmetric shape or the like).In the preferred embodiments of the present invention shown in Figure 2, rewetting interlayer 22 is thin rectangle laminated structure.Preferably between about 150mm and about 310mm, more preferably, length 1 is approximately 280mm to the length 1 of the thin slice that this liquid can see through.The width w of rewetting interlayer ₂Preferably at about 60mm with approximately between the 120mm, more preferably, width w ₂Be approximately 90mm.

A variety of materials may be used to make the rewetting interlayer that suitable liquid can see through, for example woven and non-woven material; The polymeric material of thermoplastic film one class of porous shaping thermoplastic film, plastic film, hydroforming; Porous foam; Thermoplastic yarn.Suitable woven and non-woven material can be made by natural fiber (as the wood fiber or cotton fiber), synthetic fibers (as the polymer fiber of polyester, polypropylene or polyethylene fibre one class) or the compositions of natural and synthetic fibers.The rewetting interlayer 22 that a kind of preferred liquid can see through can be made by a kind of porous formed film.The reason that porous formed film is suitable for being used for making the rewetting interlayer 22 that liquid can see through is, they can see through body excretions but do not absorb liquid, and, handle if passed through suitable perforate, they can prevent that liquid from refluxing by their and wearer's skin is got wet once again.Like this, the surface of the form film of this and Body contact can keep dry and comfortable, prevents that whereby health from being made dirty, and makes the wearer feel comfortable.The rewetting interlayer 22 that a kind of preferred liquid can see through is made by the porous shaping membrane capillaceous with taper, and the bottom in each sharp hole is arranged in outside surface 24, and the spike in sharp hole is arranged in inside surface 26.The rewetting interlayer 22 that the preferred liquid of another kind of the present invention can see through is the Procter﹠amp by the Cincinnati, Ohio; Gamble company is produced on the formed film of selling with the title of " DRI-WEAVE " in the sanitary towel.Following patent has been described suitable formed film: Decembers in 1975 were authorized No. 3929135 patent of the U.S. of Thompson on the 30th; Authorize No. 4323246 patent of the U.S. of people such as Mullane April 13 nineteen eighty-two; Authorize No. 4342314 patent of the U.S. of Radel August 3 nineteen eighty-two; Authorized No. 4463045 patent of the U.S. of Ahr on July 31st, 1984; And No. 5006394 patent of the U.S. of authorizing Baird on April 9th, 1991.These patents are all incorporated by reference by this paper.

In a preferred embodiment of the invention, the outside surface 24 of the rewetting interlayer 22 that liquid can see through is hydrophilic, thereby can be faster when making this surface of flowing fluid ratio be not hydrophilic by rewetting interlayer 22, prevent that thus liquid from flowing to the outside of disposable cover 20 rather than absorbed by moisture absorption body 10 by this outer housing.In a preferred embodiment, as described in No. 4950264 patent of the U.S. of authorizing Osborn August 21 nineteen ninety surfactant is added in the polymeric material of formed film, described patent is incorporated by reference by this paper.Perhaps, also as described in No. 4950264 patent of the above-mentioned U.S., can be by handling become hydrophilic to outer surface 24 disposable cover 20 with surfactant.

Can also make a rewetting interlayer 22 or its part have transversal stretching, its method is as described in the back is when touching upon anti-dirty interlayer 32.For example, this transversal stretching performance is improved the performance that only comprises the easy disposable cover of a rewetting interlayer 22 discussed above enough both ways, the first can be fit to the collapsed shape of the more wide region of moisture absorption body 10, it two is, under the situation that rewetting interlayer 22 is made by a kind of elastomeric material, can apply the pressure of a sealing to moisture absorption body 10.

The anti-dirty interlayer that can not see through liquid of disposable cover

But anti-dirty interlayer 32 is barrier liquid at least, preferably can not see through body fluid (for example menstruation and/or urine).Anti-dirty interlayer 32 is preferably made by layer of plastic film, although other softish liquid-tight material also can adopt.In this article, " softish " speech is used for describing that material is submissiveer, is easy to fit with the general shape and the profile phase of human body.Anti-dirty interlayer 32 prevents to absorb and be contained in the article that the Excreta in the moisture absorption body 10 is got wet and contacted with sanitary towel 20, as medicated underpants, pyjama trousers and underwear.Therefore, anti-dirty interlayer 32 can be by weaving or the composite of non-woven material one class of the polymer thin film of non-woven material, thermoplastic polyethylene or polypropylene film one class or blooming is made.More preferably, prevent that dirty interlayer 32 is layer thickness polyethylene films between the extremely about 0.051mm (2.0mils) of about 0.012mm (0.5mil).Typical polyethylene film is the XP-39385 board thin film by the Visqueen branch company production of the Ethyl company of the P18-0401 board thin film of the Clopay company production of Cincinnati, Ohio and the Terre Haute of Indiana State.Anti-dirty interlayer 32 has preferably passed through embossing and/or has not had optical processing to present an outward appearance that more resembles cloth.And anti-dirty interlayer 32 makes steam can evaporate (that is, being breathable) from moisture absorption body 10, can stop Excreta to be seeped into outside the anti-dirty interlayer 32 simultaneously.

Liquid-tight anti-dirty interlayer 32 can be made multiple size and dimension (for example rectangle, ellipse, asymmetric shape or the like).In a preferred embodiment of the invention, liquid-tight anti-dirty interlayer 32 comprises two part 32A and 32B, and these two parts all have orthogonal flaky texture.The length 1 of these two parts of 32A and 32B preferably all is at least about 200mm, and more desirable length range is between about 250mm to 310mm, and the most desirable length 1 is about 280mm.The width w of various piece ₁, w ₃Be at least about 50mm, the more desirable width range of each part at about 50mm to approximately between the 70mm, the optimum width w of each part ₁, w ₃Be about 60mm.

Also can make a liquid-tight anti-dirty interlayer 32 or its part have transversal stretching.This transversal stretching makes disposable cover 20 of the present invention wrap up the more collapsed shape of the moisture absorption body 10 of wide region when can not have retractility than it.Under the situation that anti-dirty interlayer 32 is made by a kind of elastomeric material, this transversal stretching can also apply the pressure of a sealing to moisture absorption body 10.

The material (promptly applying the material that smaller external force just can be pulled through their yield value) that has a low Young's modulus by employing is made anti-dirty interlayer 32 can make anti-dirty interlayer 32 have stiff transversal stretching.Perhaps, can make anti-dirty interlayer 32 with a kind of elastomeric material.For example, can make anti-dirty interlayer 32 with the elastic thin film of a kind of similar (SELF) wire side.The elastic thin film wire side of similar is a kind of telescopic material, and this material just can present the performance of elastic-like on draw direction under the situation that does not add elastomeric material.The SELF wire side comprises a telescopic netted fabric, this netted fabric have at least two adjacent one another are and kind is different, the zone of different in kind.One of them zone can produce significantly in another regional major part and produce the tensile resistance of opposing before the tensile power of opposing when the axial tension that is subjected on the direction parallel with predetermined shaft.When material is in non-tensioning state,, have the surperficial path length of the surperficial path length in a zone at least greater than other zone if measure from the direction that is parallel to described predetermined shaft substantially.Zone with long surperficial path length comprises one or more deformed areas that extend to outside other regional plane.The SELF wire side produces at least two tensile power of visibly different, controllable opposing of stage along this predetermined shaft at least when being subjected to along the stretching on the direction parallel with predetermined shaft.The SELF wire side produces one first resistance earlier to the stretching that adds, is elongated to when being enough to make the major part in zone with long surperficial path length to enter into to add tensile plane up to wire side, and this SELF wire side produces second resistance to further stretching.The tensile resistance of total opposing is greater than tensile first resistance of opposing that is produced by the first area.Submit with people's such as Chappell name, (the PCT publication number is WO95/03765 to be called No. 08/203087 U.S. Patent application of " Web materials (Web Material Exhibiting E1astic-LikeBehavior) that presents the elastic-like performance " with common that transfer the possession of, the name of the application, be February 9 nineteen ninety-five in open day) to have described more all sidedly and be suitable for SELF wire side of the present invention, this part patent is incorporated by reference by this paper.Perhaps, a kind of telescopic anti-dirty interlayer 32 can be by making as No. 4476180 described elastic film of patent of the U.S. of authorizing Wnuk on October 9th, 1984.This thin film is by Lake Zurich, and the Exxon Chemical Company of IL produces, and commodity are called EXX500.

The reinforcement of disposable cover

Reinforcement 42 constitutes more solid a little than other zone of disposable cover 20 an at least zone.As shown in Figure 1, this auxiliary reinforcement makes rewetting interlayer 22 and anti-dirty interlayer 32 preferentially turn up round the reinforcement 42 that limits the vertical side that transmits district 25.Reinforcement 42 also constitute one with the adjacent supplementary structure of vertical side that transmits district 25, it is believed that this structure can prevent that moisture absorption body 10 from producing undesirable compression (promptly " gathering into a branch of ") because of the cross force that the femoribus internus that is subjected to by the wearer applies.If the transverse width of moisture absorption body 10 is suitable, reinforcement 42 can also serve as and prevents that liquid is along the barrier that laterally flows to outside the vertical side that transmits district 25.

Reinforcement 42 can be made of one or more of disposable cover 20.Perhaps, it can be an individual components that joins on one or two parts of disposable cover 20, for example a foam.By Voltek, Inc.of Law rence, the radiation crosslinking polyethylene foam that M A sells with trade name Volara is the example that is suitable for being used for making a kind of foamed materials of reinforcement 42.As shown in Figures 2 and 3, reinforcement 42 is an individual components of disposable cover 20 preferably, and it is to fold, to fix or otherwise to be that disposable cover 20 provides one to strengthen the district.Can be clear that from Fig. 3 a part that constitutes the thin film of preventing dirty interlayer 32A forms vertical side 38A of anti-dirty interlayer 32A round himself being folded into the C font.In a preferred embodiment, that folded part of the thin film of the anti-dirty interlayer 32 of formation can engage (not shown) on a bottom part of this thin film (promptly being bonded on it above self).Can utilize and be used for that rewetting interlayer 22 is bonded on the substantially the same means of means on the anti-dirty interlayer 32 and realize this joint.Equally as shown in Figure 3, vertical side 29 of rewetting interlayer 22 is along laterally extending through the vertical side 38A that prevents dirty interlayer 32A, for reinforcement 42 provides further booster action.As described above, rewetting interlayer 22 preferably is bonded on the anti-dirty interlayer 32A.Utilization is positioned at the anti-dirty interlayer 32B and the rewetting interlayer 22 of the opposite side of disposable cover 20, adopts same folding and fastener can form second reinforcement 42.

The fixture of disposable cover

Disposable cover 20 can also have moisture absorption body fixture 41 and underwear fixture 43, the former is used to make moisture absorption body 10 to remain on a fixed position with respect to disposable cover 20, and the latter is used for making the assembly of being made up of disposable cover 20 of the present invention and moisture absorption body 10 to keep a suitable position at wearer's underwear.Moisture absorption body fixture 41 is used for disposable cover 20 is fixed on moisture absorption body 10.As can see from Figure 2, moisture absorption body fixture 41 is set at the inside surperficial 36A of anti-dirty interlayer 32, on the position adjacent with 39B with two vertical side 39A on the 36B.According to the specific design requirement of disposable cover 20, moisture absorption body fixture 41 can also be arranged on other position of inner surface 36, as long as this parts can be fixed on disposable cover 20 on the moisture absorption body 10.The assembly that underwear fixture 43 is used for being made up of disposable cover 20 and moisture absorption body 10 is fixed on wearer's underwear.Underwear fixture 43 can be arranged among the outside surperficial 34A of two parts adjacent with 39B of anti-dirty interlayer 32 or the 34B one or these two surfaces (in Fig. 2, being arranged on the outside surperficial 34A) with two vertical side 39A.According to the specific design requirement of disposable cover 20, under the situation of needs, the vertical side 28,29 of underwear fixture 43 along rewetting interlayer 22 can also be arranged on the outside surface 24 of rewetting interlayer 22.Preferably, fixture 41,43 is made of the securing member of binding agent one class.In a preferred embodiment of the invention, on liquid-tight anti-dirty interlayer 32, scribble the binding agent that forms fixture 41,43.Typical binding agent is by Colum bus, the Century A-305-IV that the Century Adhesives Corporation of Ohio produces and by Bridgewater, the instantLock34-2823 that the National Starch and Chemicalcompany of N J produces.Before disposable cover 20 is used, all be stamped a residual plate that can tear off usually on the binding agent, so that prevent the binding agent desiccation or adhere on the surface that it should not be stained with.The example of the indefiniteness of suitable residual plate has BL30M G-ASilox E1/0 and BL 30M G-A Silox 4P/0, and these two products are all by Menasha, and the Akrosil Corporation of W I produces.Perhaps, fixture 41,43 can be machanical fastener or other known parts of those skilled in the art of hook, ring fastener one class.

Fixture 41,43 can be made multiple size and dimension (for example rectangle, asymmetric shape, continuously shape, be interrupted shape, or the like).In the preferred embodiments of the present invention shown in Figure 2, fixture 41,43 is fillet shape.The area that can change this fillet as required is to control fixed degree.In preferred embodiment shown in Figure 2, to about 30mm, length is from the extremely about 250mm of about 150mm from about 5mm for the width of these fillets.Preferably, the width of fillet is approximately 20mm, and length is approximately 180mm.

Be easy to above-mentioned disposable cover 20 is used on the moisture absorption body 10, form a menopad.For example, when moisture absorption body 10 was made of a woven that is folding, user was put into moisture absorption body 10 centre on the inside surface 26 of rewetting interlayer 22.Residual plate is torn off from the binding agent that constitutes moisture absorption body fixture 41, two part 32A and 32B are folded up round moisture absorption body 10, and adhere on the moisture absorption body in peelable mode.Perhaps, user can overlap on vertical side 39A and 39B together, utilizes the part of moisture absorption body fixture 41 will prevent that these two parts of dirty interlayer 32 are joined together again, form a leakage of body fluids that can prevent to be absorbed improvement barrier.Then, user can tear residual plate off from the binding agent that constitutes the underwear fixture, this a whole set of assembly is put in her underwear, guarantees that disposable cover has been bonded on the underwear in removable mode, on one's body in common mode underwear being moved to then.When user determines that the moisture absorption body has reached the heap(ed) capacity of its absorb body fluids, can at an easy rate this menopad be taken out from underwear, and at an easy rate disposable cover 20 and moisture absorption body 10 are separated, and with a kind of and mode environmentally compatible it is handled, then then can wash the moisture absorption body by the routine of user.

Several alternative embodiment of disposable cover

Fig. 4 shows first alternative embodiment of disposable cover of the present invention, and promptly one is suitable for the moisture absorption body 10 common parcel bags 120 that use strong with the structural integrity not as woven of fibre bundle one class.As seen from Figure 4, parcel bag 120 also comprises rewetting interlayer 122 and liquid-tight anti-dirty interlayer 132 that a liquid recited above can see through.Rewetting interlayer 122 has two surfaces, i.e. an outside surface 124 and an inside table 126, the part on outside surface 124 and wearer's Body contact, the part on inside surface 126 is towards the moisture absorption body, rewetting interlayer 122 also has two bases 125, article 127 and two, vertical side 128,129.Equally, anti-dirty interlayer 132 also has two surfaces, i.e. an outside surface 134 and an inside surface 136, the part on outside surface 134 contacts with wearer's underwear, the part on inside surface 136 contacts with the moisture absorption body, anti-dirty interlayer 132 also has two bases 135,137 and two vertical sides 138,139.Can change the length of parcel bag 120 and width to satisfy the particular demands of all kinds of user.But the length and width size of the preferred embodiment of parcel bag 120 is that the length and width of rewetting interlayer 22 of disposable cover 20 are measure-alike with the preferred embodiments of the present invention recited above basically.

In Fig. 4 and embodiment shown in Figure 5, the part of rewetting interlayer 122 extends to outside vertical side 138 of anti-dirty interlayer 132.That is, the transverse width of the material of formation rewetting interlayer 122 is greater than the transverse width of the material that forms anti-dirty interlayer 132.This material that extends out is converted into C shape round vertical side 138, and only stitches the detachable cap 150 that 142 places are bonded into a sealing end of at.Perhaps, the part that extends out of rewetting interlayer 122 can be folded to the outside surface 124 of rewetting interlayer 122 in the mode of C font and only be bonded on this surface, form the detachable cap 150 of sealing along end seam 142.Technical staff in the sanpro field can understand, if the part that extends to outside vertical side 138 of rewetting interlayer is not to be converted into the C font, and do not engage in above-mentioned mode, it just may by user be turned to anti-dirty interlayer 132 below.

Utilize means as known in the art for example discussed above that rewetting interlayer 122 and anti-dirty interlayer 132 are joined together.They are joined together along two pairs of bases 125,135 and 127,137, and every base formation transverse end seam 142 along parcel bag 120 also is joined together them along the vertical side 129,139 that is positioned at sealing detachable cap 150 opposites, form longitudinal seam 144.Preferably, the method that rewetting interlayer 122 and anti-dirty interlayer 132 are bonded together is by pressurization, and the seam heating being arranged or not having to form under the situation of heating is referred to as tooled joint.

Parcel bag embodiment of the present invention preferably also comprises a receiving layer 127A between rewetting interlayer 122 and moisture absorption body 10.Fig. 4 and Fig. 5 show this receiving layer 127A.Can see that from this two width of cloth figure receiving layer extends along the total length of parcel bag 120, and between the side 128 and 129 of rewetting interlayer 122 along horizontal expansion.Receiving layer 127A can have several big functions, comprising Excreta being drawn to the top and inner of moisture absorption body 10.It promotes that excremental absorption is very important, because can make Excreta more be evenly distributed in the moisture absorption body 10 (absorption herein say be that (that is, on the x-y plane and/or on the z direction) transmits liquid on one, two or three directions).Receiving layer 127A can also prevent that the individual fibers in the moisture absorption body 10 from passing rewetting interlayer 122 and reaching on its outside surface 124, thereby prevents liquid return (these fibers of stretching can provide a passage that backflows by rewetting interlayer 122 for absorbed body fluid).

As shown in Figure 4 and Figure 5, receiving layer 127A is set on the inside surface 126 of rewetting interlayer 122, and extends along the total length of parcel bag 120 in the vertical, and in the horizontal along extending between the side 128 and 129 of rewetting interlayer 122.Perhaps, receiving layer 127A can be arranged on 136 these two surfaces, inside surface of the inside surface 126 of rewetting interlayer 122 and anti-dirty interlayer 132.In the embodiment shown in fig. 4, receiving layer 127A and rewetting interlayer 122 are fixedly fit together each other at least in part.Can be by fusion (comprising heat bonding, ultra-sonic welded, crimping etc.) or bonding mode, perhaps can not hinder to be drawn to Excreta on the moisture absorption body 10 or the mode of moisture absorption body 10 inside makes receiving layer 127A and rewetting interlayer 122 keep the state that pastes mutually each other by other.The most preferably, on some positions 145 at interval that receiving layer 127A and rewetting interlayer 122 is spot-welded together by the mode of thermal weld.The technical staff in sanpro field can understand that also the similar receiving layer of receiving layer of place discussion also is suitable for use among several disposable cover embodiment of the present invention discussed above therewith.

Can be with multiple different material receiving layer, these materials include, but not limited to the woven or non-woven wire side made with synthetic fibers (comprising polyester, polypropylene or polyethylene fibre); The natural fiber that comprises cotton fiber or cellulose fibre; The mixture of these fibers; The combination of perhaps any materials similar or these materials.Receiving layer 127A is preferably made at per 3000 square feet about 8 pounds (every square yard 10 restrains, i.e. 10gsy) to the non-woven materials between per 3000 square feet about 30 pounds (45gsy) by a kind of weight per unit area.More preferably, the weight per unit area of this non-woven material is between per 3000 square feet about 10 pounds (12.5gsy) to per 3000 square feet about 20 pounds (25gsy).An example of this non-woven material is a kind of by Simpsonville, the Fiberweb of N C, the name that North America company produces be called Celestra, weight per unit area is the material of per 3000 square feet about 11 pounds (14gsy).Perhaps, receiving layer 127A can by a kind of have to above-mentioned similar papery wire side weight per unit area, that be known as tulle, that have low-down density make.Authorize No. 4950264 patent of the U.S. of Osbom III and No. 07/810774 patent application of the U.S. that December in 1991 was submitted with people's such as Cree name on the 17th August 21 nineteen ninety and described sanpro more all sidedly with receiving layer 127A and rewetting interlayer 122.These patents are all incorporated by reference by this paper.

In case of necessity, parcel bag 120 also can have with top described similar underwear and fixes 143.The design of parcel bag 120 makes it not need and moisture absorption body fixture 41 similar fixtures.

When using parcel bag 120, user is taken out a moisture absorption body 10, and for example a part of fibre bundle is inserted into it between the rewetting interlayer 122 and anti-dirty interlayer 132 of bag.Then, user will seal detachable cap 150 and smooth, and put into parcel bag 120 reliably to guarantee moisture absorption body 10.If parcel bag 120 also has fixture 143, then any residual plate that covers this fixture can be taken off, in mode recited above parcel bag 120 is fixed on the underwear of user again.Then, user just can be moved her underwear to normal the dress on the position.

Fig. 6 is similar to parcel bag 120 with the parcel bag 220 shown in 7, and just the sealing detachable cap 250 of parcel bag 220 is set near the central authorities of anti-dirty interlayer 232.The advantage of this embodiment is that the comparatively expensive comparatively speaking rewetting interlayer material that it adopts is than lacking among the embodiment of Fig. 4 and Fig. 5.Can be clear that from Fig. 6 and Fig. 7 on the parcel bag 220 is to represent with similar figure notation to parcel bag 120 corresponding parts.That is, rewetting interlayer 222 is equivalent to rewetting interlayer 122; Anti-dirty interlayer 232 is equivalent to anti-dirty interlayer 132; By that analogy.Can see that from Fig. 6 and Fig. 7 anti-dirty interlayer 232 has two parts 232A and 232B.Every edge of rewetting interlayer 222 all is bonded on the respective edges of anti-dirty interlayer 232.That is, base 225A is bonded on the 235A of base, form wherein one at the bottom of seam 242A; Base 225B is bonded on the 235B of base, form wherein one at the bottom of seam 242B; Base 227A is bonded on the 237A of base, form other one at the bottom of the seam 242A; Base 227B is bonded on the 237B of base, form other one at the bottom of the seam 242B; Vertically side 228 is bonded on vertical side 238B, forms longitudinal seam 244B; Vertically side 229 is bonded on vertical side 239A, forms longitudinal seam 244A.Can be clear that from Fig. 7 vertically side 238A is bonded on vertical side 239B, form sealing detachable cap 250.Parcel bag 220 has identical size with parcel bag 120, and using method is also substantially the same.

Parcel bag 220 also can have receiving layer 227 recited above and underwear fixture 243.

Although showed and described several specific embodiment of the present invention, those skilled in the art should be understood that can make various other changes and improvements under the conditions without departing from the spirit and scope of the present invention.Therefore, in claims, will cover within the scope of the present invention all these changes and improvements.

Claims

1. disposable cover that combines and use with a moisture absorption body is characterized in that described outer housing comprises:

The rewetting interlayer that liquid can see through, described rewetting interlayer makes liquid can see through its whole thickness rapidly, this rewetting interlayer has an outside surface, an inside surface, and first and second relative vertical side, the at least a portion on described outside surface in use with wearer's Body contact, the at least a portion on described inside surface is towards described moisture absorption body, described rewetting interlayer has the capillary tube that some run through the taper of this rewetting interlayer, and these capillary tubies make liquid flow to described inside surface by this rewetting interlayer from described outside surface;

A liquid-tight anti-dirty interlayer, described anti-dirty interlayer can prevent that liquid from seeing through its thickness, should anti-dirty interlayer has the second portion on first and the second vertical side that joins the rewetting interlayer on the first vertical side that joins the rewetting interlayer to, each part has an outside surface separately, an inside surface, and first and second relative vertical side, the at least a portion on described outside surface in use contacts with wearer's underwear, and at least a portion on described inside surface is towards described moisture absorption body; And

Second reinforcement of second vertical side of first reinforcement of first vertical side of close rewetting interlayer and close rewetting interlayer, each reinforcement has first and second relative vertical sides separately, described first vertical side of described first reinforcement is bonded on described first vertical side of described rewetting interlayer, and described second vertical side of described first reinforcement is bonded on described second vertical side of described first of described anti-dirty interlayer; Described second vertical side of described second reinforcement is bonded on described second vertical side of described rewetting interlayer, and described first vertical side of described second reinforcement is bonded on described first vertical side of described second portion of described anti-dirty interlayer,

Described rewetting interlayer has two relative bases separately with described anti-dirty interlayer, described rewetting interlayer also has area and equates with the area of described anti-dirty interlayer and be covered with the first of described anti-dirty interlayer and along the second portion outside second vertical side of the described first that laterally reaches described anti-dirty interlayer, the described first of described rewetting interlayer and the described described first that prevents dirty interlayer on described first and second bases and first vertical side edge be bonded together.

2. disposable cover as claimed in claim 1, it is characterized in that described outer housing also comprises on the described inside surface of each the described part that is arranged on described anti-dirty interlayer and near the moisture absorption body fixture of described first vertical side of each described part.

3. disposable cover as claimed in claim 1 is characterized in that, described outer housing also comprises on the described outside surface that is arranged on described anti-dirty interlayer and the underwear fixture of described first vertical side of close described first.

4. disposable cover as claimed in claim 1 is characterized in that, described anti-dirty interlayer is made with elastomeric material.

5. disposable cover as claimed in claim 1 is characterized in that, described disposable cover also comprises a described inside lip-deep receiving layer that is positioned at and is bonded on described anti-dirty interlayer.