CN1263447A

CN1263447A - Folding and stacking configuration for wet wipes

Info

Publication number: CN1263447A
Application number: CN98807135A
Authority: CN
Inventors: 西蒙·D·J·希尔
Original assignee: Procter and Gamble Co
Current assignee: Procter and Gamble Co
Priority date: 1997-05-23
Filing date: 1998-05-18
Publication date: 2000-08-16
Anticipated expiration: 2018-05-18
Also published as: ZA984373B; DE69810104D1; DE69714572D1; AU7577998A; CA2290569A1; ATE221748T1; ATE229296T1; PE90599A1; HUP0003669A2; HK1016445A1; WO1998052453A1; EP0879575B1; KR100363640B1; PE88799A1; JP3359344B2; AR012739A1; CA2290569C; DE69810104T2; JP2000512878A; TW401371B

Abstract

The present invention relates to wet wipes (1) for use in wiping surfaces in the home and in industry, in addition to their use on the human body such as for baby wipes, make-up removal and other skin care applications. The wet wipes are folded and interleaved with one another (40, 50) to provide an improved stacking configuration whereby each wipe can be readily singly separated from the wet wipe stack by the consumer.

Description

Folding and the stacking configuration of wet wipes

Invention field

The present invention relates to a kind of wet wipes and pile up, make that each wiping cloth can be at an easy rate by user's taking-up from wet wipes piles up with the improved interfolded and the configuration that is staggeredly placed.

Background technology

Wet wipes generally is wetting in advance disposable towelette, and it can be used in the many aspects of family and industry, and has multiple function.Wet wipes is generally used for wipe surfaces, has both included the life object surfaces, comprises the surface of lifeless object again, and cleaning, a variety of purposes of sterilization and skin nursing etc. can also be provided such as cleaning simultaneously.

A kind of concrete purposes is exactly not have under the situation of cleaning water, for example in travelling, uses the part of wet wipes cleaning person health.Wiping cloth generally is used for cleaning and wiping human body, anus for example, and the cleaning of private parts and genitals cleaning, and the cleaning of face and hand are for example such as the inside amenities of women's wet wipes.Wet wipes can also be applied to article on the health, comprises makeup and makeup removing, skin nursing and drug therapy.In addition wiping cloth other use when also being included in more changing babies' napkin or to part by the use in the nursing of the adult who uses diaper and incontinence article to cause and baby's dermatitis.In addition, wet wipes can also be used for wiping and other surfaces of cleaning, perhaps compounding substances is applied on the surface, and these comprise kitchen and toilet surface, glasses, footwear and need clean Surface in industry, for example surface of machine and automobile.Wet wipes also comprises the article of cleaning and cleaning pet.

Wet wipes is usually by such as polyolefine fiber, and the synthetic and natural fiber of viscose rayon and cotton fiber etc. mixes and constitutes, and it is wetting by moisture synthetic usually, and this synthetic comprises other surfactants, anticorrisive agent, some composition in grease and the smell.Wet wipes is placed on adding in the lid container such as barrel containers with cover to stack configuration usually.Perhaps, wiping cloth can be placed on and have in the barrel containers that branch takes away mouthful.In both cases, can transport and store wet wipes easily.

But the problem that present folding wet wipes piles up existence is, is difficult to realize pile up easy and individually divide and get wet wipes from wet wipes.Such as having the baby in arms the user more under the operating position of changing babies' napkin, this problem is just outstanding especially.In this case, the user need pick up wet wipes and with wet wipes taking-up from wet wipes piles up with a hand.Use present product, then be difficult to realize well.

Can not pile up with container from wet wipes and realize that well the branch of wet wipes gets this problem and caused by a plurality of reasons.At first, wet wipes carries out generally folding, perhaps is placed on another wet wipes, and is perhaps staggered with adjacent wet wipes.But, the definite position of the guide edge of the uppermost wet wipes of present stacked body from visually or sense of touch be difficult to identification.This is because the matrix material of wiping cloth generally is single, so the guide edge of wiping cloth, particularly when folding, can not distinguish from the wiping cloth matrix material that is supporting guide edge.In addition, the guide edge of wiping cloth sticks to the trend on the below wiping cloth matrix material at supporting guide edge in addition.Therefore, can go out the edge by tactile recognition, can not determine the position at edge immediately thereby promptly use hand to whip or touched whole wiping cloth surface.

Its two, in case the guide edge position is determined, then the user is difficult to grasping and maintains enough matrix materials and keep promptly, with the single wiping cloth of separation from support the piling up of single wiping cloth.The user can only catch the sub-fraction of guide edge usually, be difficult to thus form tighter clamping, so wiping cloth is easy to from landing between user's finger.

These problems of getting about the wet wipes branch are recognized for this area.US5 for example, 540,332 have proposed a kind of wet wipes and a kind of method of making this wiping cloth of getting of dividing.This improved the getting property of dividing realizes by following manner, even at least a portion on an end limit of wiping cloth has the non-linear pattern of repetition, for example sinusoidal wave configuration.But, get problem by the branch that uses nonlinear guide edge can not solve or overcome single wet wipes.

At US4, the solution branch of having described other in 778,048 is got the way of problem, wherein discloses a kind of product, and the wet wipes in edge tilt in container piles up, and takes out to improve, and divides and gets and liquid distribution uniformly.In a preferred embodiment, the Gurley rigidity at each wiping cloth edge is greater than the rigidity of wiping cloth main body.But the existence of this rigid edge itself causes the unfavorable characteristic of wet wipes.Wet wipes, particularly those will be used for the wiping cloth at skin sensitivity position, and for example those baby wipes require to have certain pliability.This wiping cloth edge that is hardened no longer is suitable for using, and as being recognized in this patent, so the matrix surface that this wiping cloth is suitable for using has just reduced.And, note also minimizing or avoid this edge to contact, because this can cause stimulation with skin.And the rigidity increase at edge can not solve the problem that single wiping cloth branch is got.In addition, use manufacturing techniques available to process the wearing and tearing that this nonlinear edge can cause matrix border on nonwoven matrix, this also is very disadvantageous.

In addition, also propose a kind of branch extracting container, discern guide edge to help the user with particular design that branch takes away the hole.These containers are designs like this, and promptly in the process of taking out uppermost wiping cloth, adjacent wiping cloth is raised from piling up, and make adjacent wiping cloth partly outstanding from perforate after uppermost wiping cloth is removed.Like this, user's grasping is convenient in the position of uppermost wiping cloth very much.But the shortcoming of this device is that the matrix material of the wiping cloth that exposes by perforate is too much.Therefore, wiping cloth can dryly also no longer be suitable for using, and consequently having to abandon need not.EP747,313 have proposed a kind of method that addresses this problem and disclose a kind of many folding napkins, and for example moistening thin paper is used for getting from container tapping branch continuously.In this mode, take away the adjacent wiping cloth length of exposing in the hole from branch and be 1/4th to the maximum.But this tissue paper product can not use in all wet wipes application scenarios, and for example as baby wipes the time, the pliability of moistening thin paper and intensity are also unsatisfactory.Particularly, this moistening thin paper in use can be subjected to the restriction that is easy to tear, therefore is not suitable for as wet wipes.

Another one causes single wet wipes to pile up branch from wet wipes getting the key reason that has problems and be, the wet wipes matrix material is easy to stick on itself, and this factor does not all have to solve in aforementioned prior art.Specifically, this be by make and storage process in compression that wiping cloth is piled up, wiping cloth piles up actual weight own, among material matrix and the wiping cloth washing agent or between the factor such as gravitation that exists cause.Therefore, pile up when wiping cloth is folded to form, matrix material can be easy to adhere on itself or on the matrix material of adjacent wiping cloth.As a result, in case the user mentions wiping cloth from piling up, wiping cloth can keep its folding configuration.And wiping cloth generally can keep sticking on the adjacent wiping cloth that supports this wiping cloth at least in part.Therefore, from piling up outside the separating process, adjacent wiping cloth is also at least in part from piling up separation at this wiping cloth.As a result, the user not only needed wiping cloth is launched before its needed wiping cloth of beginning uses, also need with its with pile up in adjacent wiping cloth separate and will this adjacent wiping cloth put back in the piling up in the container.This uses when the changing babies' napkin user of baby wipes then special inconvenient for those.

In the prior art, had realized that the problem that the wiping cloth matrix adheres to.Solution for this problem is limited to the wiping cloth that provides staggered usually, for example at JP 08,089, describes in 439.About at US2, in 772,021 and US3,330,553 in the prior art of disclosed dry tissue paper product also known have actual staggered.But owing to have complex interactions between the washing agent in matrix material and wet wipes product, the known folding configuration that uses in this dry tissue paper product usually can not use in wet wipes.

And the staggered configuration of proposition much can be supervened some problems.Specifically, when the matrix material overlapping degree is excessive between two adjacent wiping cloths, then the problem of matrix adhesion can worsen more, make wiping cloth always be removed in couples, although perhaps wiping cloth is individually taken out, but after the wiping cloth on take out, the major part of adjacent wiping cloth still can take away the hole and comes out through branch, causes the wiping cloth exsiccation.On the other hand, guarantee that if make overlapping the diminishing of adjacent wiping cloth single wiping cloth branch gets, what then adjacent wiping cloth and stacked body did not have to identify separates, so the identification problem of guide edge has occurred again.

And, except the wiping cloth branch get can not be satisfactory, the other problems of the staggered configuration that proposes about prior art has also appearred.For example, as the result of staggered configuration, matrix material can be distributed in the container unevenly, and this can cause several unfavorable results, for example in whole wiping cloth piles up and, cause concentrating of cleaning agent in the specific region in piling up in the uneven distribution of the cleaning agent of independent wiping cloth own.And a lot of staggered configuration also can cause the formation of ridge and groove in matrix material, and this also can cause the reduction of intensity and pliability destroying outside wiping cloth attractive in appearance.

Therefore, need provide a kind of multi-purpose wet wipes matrix that is suitable for, for example can be used as baby wipes, this wiping cloth intensity is bigger, but and softness moisture absorption.In addition, need provide a kind of stacking configuration that is used for this wet wipes, be convenient to pile up conveniently, individually divide and get wiping cloth from wiping cloth.

The present invention solves the problems referred to above by providing a kind of wet wipes to pile up, and this wet wipes piles up and has improved folding and staggered configuration.

The present invention's general introduction

What the present invention relates to baby wipes for example is used for wiping human body each several part or other surperficial wet wipes.Specifically, the present invention relates to the stacking configuration of wet wipes, can make the branch of single wiping cloth from wet wipes piles up get and separate more easy and conveniently, particularly adopting container and dividing the use occasion that takes away the hole then all the more so.

Therefore, the wet wipes stacking configuration comprises wiping cloth first assembly and wiping cloth second assembly, and each described wiping cloth comprises matrix and liquid mixture.Each described wiping cloth extends to second at length direction from the first leading end edge and pulls end margin, and each described wiping cloth has at least two folding lines, forms the leading edge embolium thus, central plate and pull edge piece.

According to the present invention, described wiping cloth first assembly and described wiping cloth second assembly are staggeredly placed, and make at least a portion of described central plate of each wiping cloth of described wiping cloth first assembly and described at least a portion that pulls edge piece be staggeredly placed between at least a portion of at least a portion of the described leading edge embolium of a wiping cloth of described wiping cloth second assembly and described central plate.Similarly, at least a portion of the described central plate of each wiping cloth of described wiping cloth second assembly and described at least a portion that pulls edge piece are staggeredly placed between at least a portion of at least a portion of the described leading edge embolium of a wiping cloth of described wiping cloth first assembly and described central plate.In addition, wiping cloth is staggered to make the length or the described length that pulls edge piece of described leading edge embolium of each described wiping cloth first assembly be not more than 50% of corresponding central plate length, and the length of the described leading edge embolium of each described wiping cloth second assembly or the described length that pulls edge piece are not more than 50% of corresponding central plate length.

Brief description of drawings

Fig. 1 shows the perspective view of the folding wet wipes of Z-;

Fig. 2 shows the schematic cross sectional views that the folding and staggered wet wipes in minute extracting container piles up;

Fig. 3 a is the profile along the x-x line among Fig. 1 intercepting, show to have leading edge embolium 2, central plate 4 and pull edge piece 3 and be folded into the Z-folded configuration wiping cloth;

Fig. 3 b is the profile that has the folding wiping cloth on lip limit 36 on the leading edge embolium;

Fig. 4 a, 4b, 4c and 4d are the profiles that illustrates according to 4 embodiment of the folding and staggered configuration that is used for wet wipes of the present invention.

Detailed description of preferred embodiment

According to the present invention, wet wipes comprises coating or has soaked into the matrix of liquid mixture.Matrix can be weaving or nonwoven, foam, sponge, cotton-wool, bead, powder puff or film, nonwoven more preferably, natural or synthetic fibers or its synthetic or its mixture.Preferably, fibre composition is such as viscose rayon, cotton, the perhaps hydrophilic fibre of flax and such as the mixture of the hydrophobic fiber material of p-poly-phenyl dioctyl phthalate polyglycol ester (PET) or polypropylene (PP), its weight rate is the hydrophilic fibre of 20%-80%, the hydrophobic fibre of 80%-20%.Two effective especially composition combinations are 50% viscose rayon/50%PP, and 50% viscose rayon/50%PET.The Unit Weight of matrix is preferably 20g/m at least ², and preferably less than 150g/m ²More preferably, Unit Weight is at 20g/m ²To 70g/m ²Between, most preferably Unit Weight is at 50g/m ²To 65g/m ²Matrix can have any thickness.General, when matrix is to handle when making by twining, the average thickness of matrix is less than about 0.8mm.More preferably, the average thickness of matrix is between 0.1mm to 0.4mm.Concrete thickness is according to standard EDANA nonwoven commercial run, and reference method #30.4-89 measures.The bulk density of matrix preferably is not more than 1.0g/cm ³, even more preferably be not more than 0.9g/cm ³, most preferably be not more than 0.7g/cm ³

Be used to make outside the fiber of substrate, matrix also comprises other compositions known in the art and the material that adds in the matrix.The final use of this matrix desire specific implementation is depended in the selection of this additive.For example, such as moistening toilet paper, paper handkerchief, face-cloth, in the wet wipes product of baby wipes and other similar air-laid wadding products, higher wet strength is comparatively ideal characteristic.Therefore, the chemical composition well known in the art that the matrix of cellulose base is added as wet-strength resins is desirable especially.Report about the type of the wet-strength resins that uses in paper technology can be at the TAPPI monthly magazine, sequence number No.29, and " wet strength of paper and cardboard " finds in paper pulp and the paper industry technological associations (New york, 1965).Outside wet strength additives, it also is more satisfactory comprising certain dry strength additive known in the art and controlling additive such as the fluffing of amylum adhesive.And matrix can also comprise for example reagent of the improvement matrix material optical characteristics of opacifier, for example titanium dioxide.

According to the present invention, matrix can be by any method manufacturing well known in the art.For example, nonwoven matrix can be by processing such as the drying and moulding technology of air-laid wadding or such as the shop of the wet method on paper machine wadding technology.In addition, can also adopt other nonwoven manufacturing technologies, spunbond such as melting and spraying, methods such as (spun laced) is puted together in punching press and weaving.Preferable methods is that water law is twined.

The invention provides a kind of stacking configuration of wet wipes, can make easier that the wiping cloth branch gets, single wiping cloth is easier to pile up separation from wet wipes, and the position of the guide edge of easier definite next wiping cloth.

Describe the present invention with reference to the accompanying drawings in detail.Fig. 1 has provided the perspective view of single folding wet wipes 1.Fig. 2 illustrates the cutaway view that piles up according to the wiping cloth 23 that folds and be staggeredly placed of the present invention that is contained in the container 20.Container 23 comprises that barrel section 21 and lid 22 and branch take away hole 24, covers 22 for instance and is pivotally connected on the barrel section by linkwork.In alternative, wiping cloth can also pile up and be encapsulated in the packing of waterproof branch, and such as aluminium foil or lamination polymer thin film packing, packing comes this container is replenished wiping cloth as a supplement.

According to the present invention, stacking configuration comprises the first and second wiping cloth assemblies interlaced with each other.With reference to Fig. 1-3, the folding wiping cloth 1 in each wiping cloth assembly extends lengthwise into second from the first leading end edge 2 and pulls end margin 3.Folding wire side also comprises and extends lengthwise into the side 4 and 5 that pulls end margin 3 from leading end edge 2.Each folding wiping cloth 1 comprises that at least two folding lines are to form three sheets.Here, sheet is meant between two folding lines, the wiping cloth part of perhaps extending between folding line and marginal end.

First folding line 6 is parallel to guide edge 2 usually, and perpendicular to side 4,5.First folding line 6 separates with guide edge in the vertical, to be formed on the leading edge embolium 9 that extends between first folding line 6 and the guide edge 2.Second folding line 7 is parallel to first folding line 6 usually, and longitudinally separates with it, is formed on the central plate 8 that first folding line 6 place is connected with leading edge embolium 9 thus, and this central plate 8 extends between first folding line 6 and second folding line 7.Pull edge piece 10 and link to each other with central plate 8 at second folding line 7 place, and at second folding line 7 with pull between the end margin 3 and to extend.According to the present invention, wiping cloth is folding at first folding line 6 and second folding line 7 place, forming corresponding leading edge embolium 9, and central plate 8 and pull edge piece 10.Thus, before being staggeredly placed, wiping cloth can be folded into several configurations.With reference to each surface of each sheet shown in Fig. 3, these configurations are clearly illustrated out.

In Fig. 3 a, each wiping cloth has first upper surface 30 of leading edge embolium, and leading edge embolium second lower surface 31 pulls edge piece first upper surface 32, pulls edge piece second lower surface 33, central plate first upper surface 34 and central plate second lower surface 35.Leading edge embolium and pull edge piece and thus can be respectively form by first folding line and second folding line, make this sheet be supported on central plate towards upper surface or central plate on lower surface.As Fig. 1 and Fig. 3 a illustrate for example, leading edge embolium 9 is adjacent towards upper surface with central plate 8, and covered the part towards upper surface of central plate 8, pull the adjacent of edge piece and central plate 8 towards lower surface, and be positioned at central plate 8 under the part of lower surface, formed the folding wiping cloth of so-called anti-Z word thus.Perhaps, can fold wiping cloth to form Z word folding configuration.In another embodiment, to the leading edge embolium of each wiping cloth with pull edge piece and fold, all the part with the central plate upper surface is adjacent thereby make them, and all covers the part of central plate upper surface.Preferably, first and second assemblies of wiping cloth are folded, and to form each other the configuration of minute surface reflection image each other, for example first assembly of wiping cloth is folded into Z word configuration, and second assembly of wiping cloth is folded into anti-Z word configuration.

And, described in the above leading edge embolium, central plate and pulling outside the edge piece, each wiping cloth also can have other sheet.Specifically, leading edge embolium and/or pull edge piece and also can form additional folding line is to form leading edge embolium lip or to pull the edge piece lip, shown in Fig. 3 b.This lip forms by following manner, promptly by for the leading edge embolium or pull edge piece sheet lip folding line is set, the guide edge of this sheet lip folding line and folding matrix or to pull the edge adjacent but separate each other is to be formed on the folding line that extends between sheet lip folding line and the end edge, limit.This structure is particularly conducive to the grasping of promotion to the edge.Perhaps, the leading edge embolium can be folded, so that guide edge is supported on the upper surface of leading edge embolium.Perhaps, this lip can also be arranged on the upper surface or lower surface that pulls edge piece.General, lip is from guide edge or pull the edge to leading edge embolium lip folding line or pull edge piece lip folding line and approximately extended 4cm to 0.1cm, preferably about 2cm to 0.25cm.

According to the present invention, overall dimension of each sheet depends on the purposes that wiping cloth is desired to finish on matrix material and its, and can select accordingly.Preferably, leading edge embolium: central plate: the length ratio that pulls edge piece can be selected most preferably 1: 3: 1 in 1: 2: 1 to 1: 5: 1 scope.More preferably, first assembly of wiping cloth is identical with the ratio of each leaf length of second assembly, most preferably leading edge embolium and pull edge piece and all be about 1/4th of wiping cloth total length.Nonrestrictive being used as in the example of baby wipes, vertically to measure from leading end edge 2 to pulling end margin 3, each folding wiping cloth 1 can have the not folded length of about 10cm to 30cm.For each folding wiping cloth 1, between first folding line 6 and second folding line 7, be spaced apart about 2cm to 7cm, leading edge embolium 9 and the length that pulls edge piece 7 are between about 2cm to 7cm simultaneously.In a preferred embodiment, the interval between first folding line 6 and leading end edge 2 is even more preferably between the 3cm to 6cm, more preferably between 3cm to 5cm.Interval between first folding line 6 and second folding line is even more preferably between the 3cm to 12cm, more preferably between about 10cm to 12cm.At second folding line 7 with pull interval between the edge even more preferably between the 3cm to 6cm, more preferably between about 3cm to 5cm.

According to the present invention and with reference to Fig. 4 a, 4b, 4c, the embodiment shown in the 4d, the essential characteristic of stacking configuration is that each folding wiping cloth first assembly 40 is staggeredly placed with each folding wiping cloth second assembly 41.

For example, the wiping cloth x of wiping cloth first assembly is folding with anti-Z configuration, and is staggeredly placed between the folding wiping cloth x of the Z word of wiping cloth second assembly.Similarly, the wiping cloth x of wiping cloth second assembly is crisscross arranged between the wiping cloth y of wiping cloth first assembly, and the wiping cloth y of wiping cloth first assembly is staggeredly placed between the wiping cloth y of wiping cloth second assembly or the like.Like this, since the first assembly wiping cloth x, at least a portion of the described central plate 42x of each wiping cloth of wiping cloth first assembly 40 and described at least a portion that pulls edge piece 43x are staggeredly placed with the wiping cloth x of wiping cloth second assembly between at least a portion of at least a portion of the described leading edge embolium 51x of each wiping cloth of wiping cloth second assembly 50 and described central plate 52x.Similarly, at least a portion of the described central plate 52x of each wiping cloth of wiping cloth second assembly 50 and described at least a portion that pulls edge piece 53x are staggeredly placed between at least a portion of at least a portion of the described leading edge embolium 41y of each wiping cloth of wiping cloth first assembly 40 and described central plate 42y.

According to the present invention, the another one essential characteristic of stacking configuration relates to the relative length of sheet of each wiping cloth of first assembly and second assembly.Find that each wiping cloth (the wiping cloth x of for example described wiping cloth first assembly) leading edge embolium or the length that pulls edge piece should be no more than 50% of corresponding central plate length.Similarly, the leading edge embolium of each wiping cloth of described wiping cloth second assembly and the length that pulls edge piece should be not more than corresponding central plate length 50%.Therefore, the leading edge embolium of first assembly of wiping cloth and each wiping cloth of second assembly and pull edge piece and can have any length that can satisfy following condition, this condition are the length that length and the summation of the length that pulls edge piece of the leading edge embolium of any wiping cloth is not more than the corresponding central plate of this wiping cloth.But preferably, the length of each sheet of all wiping cloths in each assembly, more preferably each counterpiece in first assembly and second assembly has roughly the same size.

The wet wipes that piles up is as mentioned above compared the branch with brilliance and is got performance with the wiping cloth that piles up according to prior art.Needn't limit by theoretical, have now found that it is relevant with two factors that this improved branch is got performance, one is at first assembly of wiping cloth and the special interfolded configuration between second assembly, and another is the overlapping special area between each sheet of wiping cloth.

By using above-described staggered configuration, from be staggeredly stacked, take out uppermost wiping cloth (for example wiping cloth x of first assembly) and will cause that the leading edge embolium of the adjacent wiping cloth x of second assembly is stirred from piling up.This helps the user adjacent wiping cloth guide edge position is discerned.And, have been found that, the central plate of the leading edge embolium of adjacent wiping cloth (being the wiping cloth x of wiping cloth second assembly) and uppermost wiping cloth (being the wiping cloth x of wiping cloth first assembly) or the overlapping region that pulls between the edge piece can guarantee the matrix material of the second assembly wiping cloth x is mentioned desired length amount, and with it from piling up separation.Then seem very unimportant at the central plate of adjacent wiping cloth (the wiping cloth x of second assembly) and the overlapping region that pulls between edge piece or the central plate of uppermost wiping cloth (being the wiping cloth x of wiping cloth first assembly).Therefore, the position of first and second folding lines and leading edge embolium and the relative length that pulls edge piece and central plate particular importance then.But, outside above-mentioned given hypothesis, get effect by the improved branch of the present invention's acquisition and may also relate to other effect or interaction, perhaps not because above-mentioned hypothesis, but because other effect or interaction, so should too not rely on this.

Except the improvement that branch is got, staggered configuration of the present invention particularly in the embodiment shown in Fig. 4 a, has guaranteed that also most of matrix material of each wiping cloth is positioned at horizontal plane in piling up.This has reduced in the ridge that piles up the generation matrix material or the trend of groove.And this kind stacking configuration has also reduced liquid mixture is uneven distribution in whole piling up trend.

With reference now to embodiment 4a,, 4b, 4c and 4d are described in detail other details of the present invention.

Fig. 4 a shows most preferred stacking configuration of the present invention.This configuration comprises wiping cloth first assembly 40 that is folded into Z word configuration, and it is staggeredly placed with wiping cloth second assembly that is folded into anti-Z word configuration.Thus, the part of the central plate 42x (42y) of each wiping cloth of first assembly 40 contacts with the part of the leading edge embolium 51x (52x) of each wiping cloth of second assembly 50, makes that the part of the central plate 42x (42y) of each wiping cloth of whole and first assembly 40 on the surface of the leading edge embolium 51x (51y) of each wiping cloth of second assembly 50 contacts basically.In this embodiment, the leading edge embolium 41yx (41y) of each described wiping cloth first assembly 40 and pull edge piece 43x (43y) all be no more than described corresponding central plate 42x (42y) length 50%, and both length are about equally.Accordingly, the leading edge embolium 51x (51y) of each described wiping cloth of described second assembly 50 and pull edge piece 53x (53y) all be not more than described corresponding central plate 52x (52y) length 50%, and both length are about equally.And, the leading edge embolium 41x (41y) of each wiping cloth of first assembly 40, pull the length of edge piece 43x (43y) and central plate 42x (42y) and the corresponding leading edge embolium 51x (51y) of each wiping cloth of second assembly 50, the length that pulls edge piece 53x (53y) and central plate 52x (52y) is distinguished about equally.Specifically, in the embodiment shown in Fig. 4 a, the guide edge of each wiping cloth of the guide edge of each wiping cloth of described first assembly and described second assembly is about 1/4th of each wiping cloth total length.

Embodiment shown in Fig. 4 b is identical with the embodiment shown in Fig. 4 a aspect the length of each sheet.But in this embodiment, the wiping cloth of first and second assemblies is folding in the following manner, promptly before staggered, and the leading edge embolium of wiping cloth and pull edge piece all the lower surface with the central plate of corresponding wiping cloth is adjacent.Therefore, after folding mutually according to the present invention, the part of the central plate 42x (42y) of each wiping cloth of first assembly 40 contacts with the part of the 52x (52y) of the central plate of each wiping cloth of second assembly 50, and the edge piece 53x (53y) that pulls of each wiping cloth of second assembly contacts with the leading edge embolium 41y of each wiping cloth of first assembly 40.Similarly, the part that pulls edge piece 53x of each wiping cloth of second assembly contacts with the part of the leading edge embolium 41y of each wiping cloth of first assembly, and the part of the central plate 52x of each wiping cloth of second assembly contacts with the part of the central plate 42y of each wiping cloth of first assembly.

Embodiment according to Fig. 4 c and 4d shows a kind of stacking configuration, and wherein the wiping cloth of first assembly 40 is folded into Z word configuration, and is staggeredly placed with second assembly 50 that is folded into anti-Z word configuration.But, in these embodiments, the leading edge embolium of the wiping cloth of each assembly and the length that pulls edge piece and unequal.In the embodiment shown in Fig. 4 c, the length that pulls edge piece of the wiping cloth of first and second assemblies is all greater than 50% of central plate length, and in fact be about first and second assemblies each wiping cloth central plate length 60%.As a result, in fact the length of the leading edge embolium of each wiping cloth of first and second assemblies be about 30% all less than 50% of central plate length.In the embodiment shown in Fig. 4 d, the length of the leading edge embolium of each wiping cloth of first and second assemblies is all greater than 50% of central plate length, and be about first and second assemblies each wiping cloth central plate length 60%.As a result, the length that pulls edge piece of each wiping cloth is about 30% less than 50% of central plate length.

In according to a highly advantageous elaboration of the invention, as shown in Fig. 4 a, second folding line 44x of each wiping cloth of first assembly should directly not contact with first folding line 54x of adjacent each wiping cloth of wiping cloth second assembly.Similarly, second of each wiping cloth of second assembly folding line 55x should not contact with first folding line 44y of the adjacent wiping cloth that belongs to first assembly yet.Preferably, have the distance of 1mm at least between crease line, even more preferably distance is between 1mm to 5mm, and most preferably distance is between 1mm to 3mm.Its reason is, it is believed that contact between two adjacent folding lines of two adjacent wiping cloths (the wiping cloth x of second assembly and the wiping cloth x of first assembly) can hinder uppermost wiping cloth and separate from adjacent wiping cloth, and cause that matrix material too many on the adjacent wiping cloth is from piling up separation.

In another embodiment of the present invention, preferably also form the guide edge or the sheet of indication with vision or sense of touch.This have at least help further help the user to determine the position of guide edge itself.The indication of vision can realize in the following manner promptly at bar or the band of printing light colour near the edge itself on the surface of leading edge embolium.

Be used to provide a kind of particularly preferred method of edge indication to be to use nonlinear edge such as the saw tooth pattern of sinusoidal waveform that repeats or repetition.This non-linear pattern can be extended with form continuous or that be interrupted along the partial-length at edge, perhaps more preferably extends along the roughly whole length at wiping cloth edge.This edge not only provides the vision indication, and the indication of sense of touch is provided.This structure has further promoted to divide the simplification of getting.

According to the present invention, matrix material soaks into usually or has applied liquid mixture.An advantage of the present invention is that this stacking configuration allows various mixtures to be used for wiping cloth and can not to get characteristic to branch and bring remarkable influence.This is useful for the characteristic that allow to change mixture not only, and for allow to change mixture in whole piling up to apply with the antagonism liquid mixture also be useful in the deposition of piling up the bottom.According to the present invention, liquid mixture one speech is meant any mixture that is in liquid state when wiping cloth when contacting with the surface.General, mixture can be the aqueous solution, alcoholic solution or emulsion, emulsion can be water-in-oil emulsions, perhaps oil-in-water emulsion or multicomponent emulsion, preferably the water emulsion of oil-containing.This emulsion also can comprise the lipoid phase, and it is when having applied a little pressure, for example owing to the wiping skin divides.General, mixture comprises the described active ingredient that accounts for weight 2% to 50% and 50% to 98% water, preferably deionization or distillation.And in active ingredient, best 2% system 20% is oil phase, and remaining is water.

According to the present invention, wet wipes has oil phase and accounts for weight 1% to 20%, preferably 2% to 10% emulsion blends.Even more preferably, oil base is to extract from the natural material such as rape oil or animal oil or both synthetics, mixture mutually.Suitable rape oil used herein and animal oil comprise the wax such as beeswax, lanolin, wax wood, such as the oil of the aliphatic acid ether of glyceride and glycerin ether, fatty acid alcohol, fatty acid ester and for example sad and capric acid triglyceride and the misery fat of palm.Suitable mineral oil comprises the petroleum-based oil such as paraffin and oil glue.Here the artificial oil of Shi Yonging comprises ethene polymers, for example Tissuemat E or silica-based oil.Suitable silicone oil comprises dimethyl silicone polymer, volatile cyclomethicone, dimethyl silica alkanol, siloxy silicate and silicone derivative amino and phenyl, the perhaps mixture of above-mentioned substance.Example comprises dimethyl siloxane (Dow Corning200 Fluids), cyclomethicone and dimethyl silica alkanol (Dow Corning 1401 Fluid), hexadecyldimethyl benzyl ammonium siloxanes (Dow Corning 2502 Fluid), dimethyl siloxane and trimethylsiloxy group silicate (Dow Corning 593 Fluid), cyclomethicone (Dow Corning244,245,344 or 345 Fluid), Silicone DC 556 (Dow Corning 445 Fluid), the perhaps mixture of above-mentioned substance.

Oil-in-water emulsion needs emulsifying agent usually.The emulsifying agent that can adopt in the present invention preferably can carry out emulsification just to oil-in-water emulsion.Emulsifying agent accounts for 0.02% to 5.0% of weight at present, preferably accounts for 0.02% to 3.0% of weight.

In a preferred embodiment, emulsifying agent is the emulsifying agent of polymeric type, for example C10-C30 alkyl acrylic fat and one or more acrylic acid, methacrylic acid is perhaps with the copolymer of the single fat of a kind of acid in the crosslinked above-mentioned acid of thin malt sugar handle ether or pentaerythrite propyl ether.The emulsifying agent that can use in the present invention comprises Ceteareth-12 thus, Ceteareth-20 or Pemulen TR1 and TR2, and these can be buied from U.S. B.F.Goodrich company.But, the emulsifying agent that other is known, the fatty alcohol of ethoxylation for example, the glyceride of aliphatic acid, soap, the derivative reagent of sugar also can here use.Other applicable emulsifying agent comprises those disclosed reagent in EP-A-328 355.

According to the present invention, mixture also can comprise stabilizing agent and preservative agent.Be adapted at stabilizing agent used herein and comprise phenoxetol (preferably accounting for 0.1 to 1.0%), Potassium Benzoate, sodium sorbate, oxybenzene formic acid two formicesters, oxybenzene propyl formate, oxybenzene formic acid second fat, the oxybenzene formate butyl, phenylbenzyldimeth lammonium chloride and disodium salt disodium salt (hereinafter claiming EDTA), perhaps other edta salt (sequestrenes).Sequestrene is the compounding ingredient and the metal complex of acid of disodium salt disodium and salt.The total amount of stabilizing agent should account for 0.1% to 4.0% of mixture weight.

Mixture of the present invention also comprises 0.02% to 5.0% softening agent and the NMF that accounts for mixture weight.Preferably, softening agent is water-soluble, and comprises such as propane diols, the polyalcohol of glycerine and water-soluble lanolin derivative.

Can used in this invention other may be selected to branch and comprise antifungal agent, antiseptic, skin care ingredient, oil-soluble cleaning agent, water-soluble active agent or cleanser (preferably non-ionic or both sexes), pH value conditioning agent, spices, essence etc.

When preparing according to wet wipes of the present invention, mixture is applied at least one surface of matrix material.This mixture can apply in any moment in the process of making wet wipes.Preferably, mixture can be applied on the matrix after the matrix drying.Can use the various lubriation material applying methods that can distribute equably and have fusion or liquid denseness.Suitable method comprises, spray, printing, (for example phenylamino letterpress), coating (for example intaglio printing coating or immersion (flood) coating), extruding (be that mixture is compelled to pass the pipe that contacts with matrix, matrix passed through these pipes simultaneously), or these apply the combination of technology.For example, mixture is sprayed on the rotating surface such as reduction roll, and subsequently mixture is sent to matrix surface.Mixture both can be applied on the surface of matrix, also can be applied to simultaneously on two surfaces, preferably two surfaces.Preferable methods is extrusion coating.

Mixture also can be applied on the surface of matrix unevenly.If uneven applying just means that the pattern and the mixture quality of mixture distribution change for instance on matrix surface.For example, the surface of matrix can have more or fewer mixtures, even does not have any mixture on the some parts on surface.The applied amount of mixture is generally every gram matrix and applies 0.5g to 10g, and preferably every gram matrix applies 1g to 5g, and most preferably every gram matrix applies 2g to 4g.

Preferably, mixture can be applied on the matrix in the dried any point of matrix.For example, mixture can be applied on the matrix in the following moment, such as the calendering before or afterwards, perhaps before being wound onto on female roller.General, the matrix that launches from roller that is applied to of mixture carries out, and the width of matrix equals the width of a plurality of wiping cloths of desire manufacturing.The matrix that is applied with mixture is used to make independent wiping cloth subsequently.

Claims

1. stacking configuration that is used for wet wipes, described configuration comprises wiping cloth first assembly and wiping cloth second assembly,

Each described wiping cloth comprises matrix and liquid mixture, and each described wiping cloth extends to second at length direction from the first leading end edge and pulls end margin, and each described wiping cloth has two folding lines, forms the leading edge embolium thus, central plate and pull edge piece;

It is characterized in that described wiping cloth first assembly and described wiping cloth second assembly are staggeredly placed, make

At least a portion of the described central plate of each wiping cloth of described wiping cloth first assembly and described at least a portion that pulls edge piece are staggeredly placed between at least a portion of at least a portion of the described leading edge embolium of a wiping cloth of described wiping cloth second assembly and described central plate

At least a portion of the described central plate of each wiping cloth of described wiping cloth second assembly and described at least a portion that pulls edge piece are staggeredly placed between at least a portion of at least a portion of the described leading edge embolium of a wiping cloth of described wiping cloth first assembly and described central plate

The length of the described leading edge embolium of each described wiping cloth first assembly or the described length that pulls edge piece are not more than 50% of corresponding central plate length,

The length of the described leading edge embolium of each described wiping cloth second assembly or the described length that pulls edge piece are not more than 50% of corresponding central plate length.

2. stacking configuration according to claim 1, the length and the described length that pulls edge piece that it is characterized in that the described leading edge embolium of each described wiping cloth first assembly all are not more than 50% of corresponding central plate length, and the length of the described leading edge embolium of each described wiping cloth second assembly and the described length that pulls edge piece all are not more than 50% of corresponding central plate length.

3. according to claim 1 or 2 described stacking configurations, it is characterized in that the described leading edge embolium of each described wiping cloth first assembly and the described length that pulls edge piece about equally, the described leading edge embolium of each described wiping cloth second assembly and the described length that pulls edge piece are about equally.

4. stacking configuration according to claim 3, it is characterized in that the length of described leading edge embolium of each described wiping cloth first assembly and each described wiping cloth second assembly described leading edge embolium length about equally.

5. stacking configuration according to claim 4 is characterized in that the described guide edge leaf length of each described wiping cloth first assembly and described wiping cloth second assembly and the described edge piece length ratio that pulls of each described wiping cloth first assembly and described wiping cloth second assembly are 1: 2: 1 to 1: 5: 1.

6. stacking configuration according to claim 4 is characterized in that the length of the described leading edge embolium of each described wiping cloth first assembly and described wiping cloth second assembly is about 1/4th of each described wiping cloth total length.

7. stacking configuration according to claim 6 it is characterized in that each wiping cloth of described first assembly is folded into anti-Z word folding configuration, and each wiping cloth of described second assembly is folded into Z word folding configuration.

8. according to the described stacking configuration of aforementioned each claim, it is characterized in that each wiping cloth of described wiping cloth first assembly and each wiping cloth of described wiping cloth second assembly have first folding line and second folding line, wherein the distance between second folding line of a wiping cloth of first folding line of each wiping cloth of first assembly and second assembly is between the 1mm to 5mm;

Wherein the distance between first folding line of a wiping cloth of second folding line of each wiping cloth of first assembly and second assembly is between the 1mm to 5mm

9. according to the described stacking configuration of aforementioned each claim, it is characterized in that described wiping cloth is placed in the container, described container has branch and takes away the hole.

10. according to the described stacking configuration of aforementioned each claim, it is characterized in that described matrix is a non-woven material.

11., it is characterized in that described matrix comprises from the polyethylene terephthalate, the hydrophobic fibre of selecting in polypropylene or its mixture according to the described stacking configuration of aforementioned each claim.

12. according to the described stacking configuration of aforementioned each claim, it is characterized in that described matrix comprises from cotton, viscose rayon, flax, the perhaps hydrophilic fibre of selecting in its mixture.

13. according to the described stacking configuration of aforementioned each claim, it is characterized in that described liquid mixture is an oil-in-water emulsion, the described dried base of every gram is applied with the described emulsion of 0.5g to 10g on the described wet wipes.