DE69907015T3 - ISSUE CONTAINER - Google Patents

Description

Field of the invention

The The present invention relates to a dispensing system for wet wipes, which a container and a pile of wet wipes it includes which an improved output by pulling up a single cloth from the wet cloth pile.

Background of the invention

Wet wipes are usually pre-moistened, disposable handkerchiefs, which are available in a variety of Both household and industrial applications are used can and fulfill a variety of functions. Wet wipes will be usually used to both surfaces of people as well also to wipe things off, and can have numerous benefits, like for example cleaning, cleaning, disinfecting and skincare benefits, beistellen.

A certain application is the use of wet wipes for Wiping off parts of the human body, especially when washing water not available is, for example while traveling. Towels are also commonly used Cleaning and wiping of the human in general, such as for anal, perineal and genital cleaning and for cleaning of the face and hand, for example as intimate hygiene wipes, such as for example, lady wipes, used. wipes can as well as for the application of substances to the body including removal and applying make-up, skin conditioners and medications be used. Another application of towels is during diaper changing and also for the treatment of adult and baby dermatitis, partial caused by the use of diapers and incontinence devices. additionally are wet wipes as well for wiping and / or cleaning other surfaces or for the Application of compositions on surfaces, for example, kitchen and Bathroom surfaces, Eyeglass lenses, shoes and surfaces, which require cleaning, in the industry, for example, surfaces of machines or cars, applicable. wipes Include also articles which are used to clean or care for Pets are used.

Wet wipes are usually as a structure of a combination of synthetic and natural Fibers such as polyolefin fibers, viscose fibers and cotton fibers, which generally moistens with an aqueous composition which contains, among others, surfactants, preservatives, oils and odors. The towels are then usually packed in a container to simple To facilitate transport and easy storage.

It There are two basic types of containers for such wipes, namely containers for several towels and single tissue packaging. In typical poly towel containers is a flexible or rigid moisture impermeable container is used, with the wipes in it folded and stacked in such an arrangement so that at one time a single towel is released to a consumer and from this Will get removed. These containers have a tubular shape Configuration or flexible rectangular packaging, both of it after opening usually resealable.

One Problem with the current ones Wet wipe products is the lack of lightweight single towel dispensing from the pile of wet wipes and / or the container. This problem is particularly acute in such cases of use, when to Example a consumer holding a baby during diaper changing. Under such conditions must Consumers are easily able to pick up a cloth and remove it from the container and the stack to be separated using only one Hand and without that towel dispensers from the surface, at which he is located while the Removal action is raised, is unfolded. This will however not satisfactorily achieved with current products.

The Problem of lack of satisfactory single moist towel issue from the stack and the container exists for a number of reasons. First, wet wipes are in usually folded and arranged either on top of each other or with an adjacent cloth nested and arranged on top on the other, to form a pile. The exact location of the Start edge of the uppermost wet wipe of current stacks however, is not easily identifiable, be it visually or through Contact. This is because the substrate material of the cloth is usually homogeneous and therefore the leading edge of the cloth, especially when folded is, not from the cloth substrate material on which it rests, can be distinguished. additionally The leading edge portion of the blanket also has a tendency to the underlying cloth substrate material on which it rests, to stick. Accordingly, leads even touch identification the edge by running or pulling the fingers over the cloth surface not immediately to identify the location of the edge.

Second, once the run-up edge has been located, it is difficult for the consumer to get enough substrate material under control and keep it under control to separate a single sheet from the pile on which it rests. The consumer is often only capable of grasping a small portion of the leading edge such that a firm grip thereof is not established and thus the cloth slips easily from the consumer's fingers.

These Problems associated with wet tissue dispensing are in the Professional world has been recognized. For example, US 5,540,332 the issue of wet wipes and a method of making these towels. The improved issueability is achieved by providing at least a portion of one of the end edges of the Tuches with a repetitive non-linear pattern, such as for example, a sine wave configuration achieved. However, it will the problem of single-wet tissue issue neither addressed nor eliminated by the use of a non-linear approach edge.

A another proposed solution for the issue issue is described in US 4,778,048, which discloses a product, which a stack of wet wipes comprises which within a container for improved Access, improved dispensing and even liquid distribution edgewise are tilted. In a preferred embodiment, the border Gurley stiffness greater than the rigidity of the main body of the cloth Towel on. However, the provision of such a stiff edge in itself an undesirable Characteristic of a wet wipe. Wet wipes, especially those soft intended for use on sensitive areas of the skin, such as for example baby towels, require a certain degree of softness. The edge of the cloth, which is stiffened is no longer appropriate, as it is in fact is recognized in the patent itself and therefore have a cloth reduced suitable substrate surface for use. As well must be careful be worn to contact this edge section with the skin reduce or avoid, as it can cause skin irritation. Furthermore solve the Rigidity of the edge, in turn, does not address the issue of single-sheet output. In addition, that would Providing such a non-linear edge of a Faservliesubstrat below Use of current Manufacturing techniques also lead to fraying of the edges of the substrate, which is also extremely undesirable.

One another key factor, the problem of single moisturizing dispensing from a wet wipe stack contributes is the tendency of the cloth substrate material to adhere to itself. This is particularly due to the compression of the cloth stack during the Manufacture and storage, the current weight of the pile of towels itself and the presence of attractions between the substrate material and the composition of the lotion of the towels. As a result, if The towels folded to form a stack, the substrate material to adhere to itself and to the substrate material of adjacent wipes. Consequently, as soon as the consumer removes the cloth from the stack, the cloth tends to be lifted or pulls the cloth through the dispensing opening, its folded configuration maintain. Furthermore the cloth usually remains at least partially adhering to adjacent cloth on which it rests. Accordingly, during the activity the Tuchentfernens from the stack in addition to the adjacent cloth also at least partially separated from the stack. As a result must the Consumer not only the cloth, before he with the desired Application of the cloth begins to unfold, but he must do it as well from the adjacent cloth in the stack and separate this cloth from the stack in the container return again. This is obviously particularly uncomfortable for consumers when using of baby towels while diaper changing.

The Problem of substrate cloth adhesion has been recognized in the art. Try to solve this Problems usually have in the provision of certain interleaved ones Configurations for The towels passed, as described for example in JP 08,089,439.

however have many of the proposed interleaved configurations related problems. In particular, if as a result of nesting the degree of overlap of substrate material adjacent towels is great then the problem of substrate adhesion is only worsened so that the wipes are always effective be released in pairs. On the other hand, if the overlap between adjacent towels is minimized, so that single sheet issue guaranteed, there is no discernible separation from the neighboring one Towel from the pile and the problem of run-in identification seems back up.

Another problem with present stacks of wet wipes is that a large amount of the substrate material of the adjacent wipes is still exposed through the opening after the wipe dispensing is complete, especially for convolution configurations which have a large overlap of substrate material between adjacent wipes. As a result, the cloth becomes dry and unsuitable for use and must be disposed of. EP 747,313 suggests a means to address this problem and discloses a multi-folded paper, such as a moistened tissue paper, for continuous dispensing through a container opening. In this Wei it will become one

maximum a quarter of the length of the adjacent cloth exposed through the dispensing opening. However, such Paper tissue products not for all wet wipe applications, such as baby wipes used because the moistened tissue paper is not satisfactory is in the form of softness or firmness. In particular, such suffer Moistened tissues have a tendency to tear during use, and therefore they are not suitable for use as wet wipes.

alternative It has also been proposed to have specifically designed dispensing containers, so-called pop-up dispensers, to improve the output. These dispensers exist from a container with an upper panel having an opening. The pop-up dispensers operate on the principle of providing a dispensing opening, which is relatively small and which so dimensioned and configured is that in Combination with a pile of towels, which is a certain Convolution configuration, the upper portion of the adjacent Tuches inside the dispensing opening is held. These containers are therefore designed so that during the Removal action of the uppermost cloth from the container through the opening of the adjacent cloth is lifted from the stack so that it partially through the opening protrudes as soon as the top cloth has been removed. To this Way is the top cloth for easy grasping positioned by the consumer. This kind of Pop-up dispensers allows the towels, either in a continuous roll with perforations in it to be provided or as separately folded towels, such as for example, described in US 5,560,514.

Unfortunately is the provision of dispensers with usually very small dispensing openings not as desired by the consumer considered. In particular, such small openings prevent the consumer from to be able to see and check the contents of the container and the number of towels, which remain in it, estimate. If A pop-up failure occurs and the cloth adjacent to the dispensed Cloth is not raised from the pile, according to the small Output opening size of the consumer unable to easily guide the cloth through the dispensing opening, and it is necessary to disassemble the dispenser itself. Just like that will be a similar one Problem encountered when the consumer inadvertently too many towels than necessary takes from the dispenser and makes attempts to repel them in the dispenser.

It It is therefore an object of the present invention to provide a wet wipe dispensing system which allows individual blank separation from the stack and container, so that Cloth is unfolded and ready to use, without any the aforementioned Problems.

Summary of the invention

Accordingly, the present invention relates to a wet wipe for wiping off parts of the human body, such as baby wipes, and other surfaces. In particular, the invention relates to a pop-up wet tissue dispensing system to allow easy dispensing and separation of a single tissue from the stack of wet tissues within a dispensing container across the decreasing height of the stack. The dispensing container comprises a container body, said container body comprising a lower portion and an upper portion, the upper portion having a dispensing opening with a cross-sectional area of 14 cm ² to 65 cm ² . The wipes have an average release force between two wipes, as defined by the test method herein, of from 75 g / cm ² to 250 g / cm ² .

Short description of characters

1 : Is a schematic cross-sectional illustration of a stack of wet wipes in a dispensing container 20 ,

2 : Is a cross-sectional illustration showing a cloth 1 shows what a start edge field 2 , a midfield 4 and a trail edge field 3 and folded in a Z-fold configuration.

3a & 3b Figure 10 are cross-sectional illustrations of preferred fold and nesting configurations for wet wipes according to the present invention.

Detailed description the invention

According to the present invention, the wet wipe comprises a substrate which is coated or impregnated with a liquid composition. The substrate may be woven or nonwoven fabric, foam, sponge, batt layers, balls, batches or foils, most preferably a nonwoven fabric and may be composed of natural or synthetic fibers or mixtures thereof. Preferably, the fiber compositions are a blend of hydroplilic fiber material, such as rayon, cotton or flax, and hydrophobic fiber material, such as polyethylene terephthalate (PET) or polypropylene (PP), in a ratio of 20% to 80% hydrophilic and 80% to 20% hydrophobic material, by weight. Two particularly preferred accessories Compositions are 50% viscose / 50% PP and 50% viscose / 50% PET. The substrate preferably has a basis weight of at least 20 gm ^-2, and preferably less than 150 gm ^-2 , and most preferably the basis weight is in the range of from 20 gm ^-2 to 70 gm ^-2 , more preferably from 50 gm ^-2 to 65 gm ^{. 2} . The substrate may have any caliper. When the substrate is made by a hydroentanglement process, the average substrate caliper is typically less than 0.8 mm. More preferably, the average caliper of the substrate is 0.1 mm to 0.4 mm. The substrate caliper is measured according to the standard EDANA nonwoven industry methodology, reference method # 30.48-9. The bulk density of the substrate is preferably not more than 1.0 g / cm ³ , preferably not more than 0.9 g / cm ³ , most preferably not more than 0.7 g / cm ³ .

In addition to the fibers used to make the substrates, For example, the substrate may contain other components or materials to it are added, as is known in the art. The types of additives that are desired are described by the depend on the particular end use of the imaginary substrate. For example is in wet wipe products, such as moist toilet paper, Paper towels, facial tissues, baby wipes and other similar Air-laid products, a high wet strength is a desirable Attribute. Thus, it is often, especially for cellulose based substrates, he wishes, chemical substances known in the art as wet strength resins shall be included. A general dissertation on the types of wet strength resins, which can be used in the paper industry can be found in the TAPPI monograph series No. 29, Wet Strength in Paper and Paperboard, Technical Association of the Pulp and Paper Industry (New York 1965). additionally to wet strength additives It may also be desirable certain dry strength and lint control additives, which are known in the art, such as starch binders, to include. Furthermore, the substrate may also comprise means to improve the optical characteristics of the substrate material, such as opaque making agents, for example titanium dioxide.

According to the present In the invention, the substrate may be obtained by any of the methods disclosed in U.S. Pat are known in the art, generated. For example, fiber non-woven substrates by dry-forming techniques, such as in-air-laying or wet laying, such as on a papermaking machine become. Other nonwoven production techniques, such as melt blown, Spunbonding, needling and spunbonding methods may as well be used. A preferred method is hydroentangling.

The Substrate may consist of a layer or a plurality of layers, preferably two or three layers of material. These layers can identical in the form of the composition and / or the production techniques or a combination of some of the materials herein previously described. Preferably, one of the Layers a reinforcing Be gauze layer, as for example in US patent application serial no. 09/133294, is described.

According to the present Invention, the substrate of the wet wipe a midfield and zweigegenüberliegende End edge fields, a start edge field, and a trail edge field. Each of the fields has a first upper surface and a second lower surface on.

Every folded towel 1 extends lengthwise in the machine direction from a first edge, the leading edge 2 , to a second edge, the trailing edge 3 , The folded webs also have margins 4 and 5 on, which is the length of the first beginning of the run 2 to the second trailing wheel 3 extend. Every folded towel 1 can be a first field fold 6 Include, which generally parallel to the start edge 2 , is and which are generally perpendicular to the margins 4 . 5 is. The first field fold 6 is lengthwise from the start edge 2 spaced to a start edge field 9 to provide, which is between the first field fold 6 and the start edge 2 extends. As used herein, a panel is a portion of the blanket that extends between two pleats or between a pleat and an end edge.

The folded cloth may also have a second field fold 7 and a midfield 8th and a trail edge field 10 include. The second field fold 7 is generally parallel to the first field fold 6 and spaced therefrom longitudinally. The midfield 8th is at the first field fold 6 with the start margin field 9 connected and extends between the first field fold 6 and the second field fold 7 ,

The trail edge field 10 is with the midfield 8th at the second field fold 7 connected. The trail edge field 10 extends between the second field fold 7 and the trailing edge 3 , The cloth is put on the first and second field folds 6 and 7 folded to the start edge, midfield and trailing edge field 9 . 8th and 10 in a 2-fold configuration, as best in the 2 and 3 you can see. In the Z-fold configuration is the field 9 adjacent to a section of the field 8th and lies above this and the field 10 is adjacent to a section of field 8th and is below this. However, other folding configurations, such as C-folds or J-folds, are equally applicable. Furthermore, in addition to the fields described hereinbefore, the cloth may have additional fields. In particular, the leading edge field and / or the trailing edge field may also be provided with an additional fold to provide a leading edge field lip or a trailing edge field lip. Such a lip is formed by providing the leading edge panel or trailing edge panel with a field-lip fold which is adjacent and spaced from the leading or trailing edge of the folded substrate to provide a lip extending between the field-lip fold and the end edge. The field lip fold can be folded onto the lower surface of the start edge field so that the start end edge comes to lie below the start edge end field. This configuration is particularly beneficial in enabling the edge to be grasped. Alternatively, the leading edge field may be folded so that the leading edge rests against the upper surface of the leading edge panel. The lip may also be positioned on the upper or lower surface of the trailing edge panel. As a rule, the lip extends from the starting or trailing edge of between 4 cm to 0.1 cm, preferably from 2 cm to 0.25 cm, to the leading edge field lip fold or to the trailing edge field lip fold.

With reference to the 2 and 3 become the folded towels 1 between adjacent folded towels 1 folded into one another. For example, a field could be like the field 10 on a folded cloth between the fields 9 and 8th an adjacent underlying folded cloth are nested. According to the present invention, the sheets are stacked in groups of discrete folded sheets. Several piles of discrete folded sheets may then be combined one upon the other to provide a stack as in 2 is shown. However, the number of wipes in a separate stack and the combination of stacks may be varied as required and depending on the container with which they are combined. A particularly preferred fold configuration of the wipes according to the present invention is described in European Patent Application No. 97108388.6, in PCT / US98 / 10603 and in EP 747,313 and incorporated herein by reference.

According to the present invention, the overall dimension of the substrate material is dependent on the intended use of the tissue and can be selected accordingly. In a non-limiting illustrative example in which the towel may be used as a baby wipe, any folded towel may 1 an unfolded length of 10 cm to 30 cm measured lengthwise from the start edge 2 to the trailing edge 3 , exhibit. For every folded cloth 1 can. the spacing between the first field fold 6 and the second field fold 7 from 2 cm to 7 cm, while the lengths of the start edge field 9 and the trailing edge field 10 from 2 cm to 7 cm. In a preferred embodiment, the spacing is between the first field fold 6 and the beginning edge 2 more preferably from 3 cm to 6 cm and even more preferably between about 3 cm and 5 cm. The spacing between the first field fold 6 and the second field fold is more preferably from 3 cm to 12 cm, and even more preferably from about 10 cm to 12 cm. The spacing between the second field fold 7 and the trailing edge is more preferably from 3 cm to 6 cm, and even more preferably from about 3 cm to 5 cm.

According to the present invention, the improved pop-up dispensing of the wipes by the combination of the dispensing container dispensing opening described hereinbelow with wipes stacked such that the average release force between two adjacent wipes is 75 g / cm ² to 250 g / cm ² , preferably from 100 g / cm ² to 200 g / cm ² , more preferably from 125 g / cm ² to 175 g / cm ² , as defined hereinafter in the test method. While not bound by theory, it is believed that the upper release force limit is required to prevent chaining of the wipes, while the lower limit ensures substrate stability and prevents the wipes from falling back.

According to the present Invention may be any means by which the separation force between adjacent towels can be adapted to meet the aforementioned requirements, be used and therefore includes both physical and mechanical means, chemical agents and combinations thereof. Preferably, these agents should be selected to meet their impact to minimize the characteristics of the substrate material per se, so that Cloth his desirable Characteristics, such as softness, absorbency and wet strength, and, around the wetland fields at each stage of the manufacturing process to be added.

Suitable physical / mechanical means for providing the surface of the wet tissue with the release force include, for example, embossing, crimping, thermal bonding, ultrasonic bonding, and printing, such as water-jet printing. Such methods are well known to those skilled in the art. A preferred method is to provide the surface of the cloth substrate with a surface topography of peaks and valleys through the use of gauze partially bonded to another layer, as described in US 09/133294, incorporated herein by reference.

alternative can the fibers from which the substrate material is composed, so selected to be hydrophobic and / or a lower substrate Friction, for example by reducing the presence of long or protruding fibers from the surface of the substrate to provide. Similarly, the Manufacturing process, which for The substrate used can also be selected to provide the desired release force beizustellen. For example, air laying techniques are considered to be that she raise the separation force, whereas wet laying reduces it.

Generally suitable chemical means for adapting the separation force between towels Include lubricant, silicone, release coating from Dow Corning of Midland, Michigan, available as Syl-Off 7677, which is a crosslinker available as Syl-Off 7048, in parts by weight of 100 parts or added to 10 parts is. Another suitable treatment is a coating of a UV-curable Silicone which comprises a mixture of two silicones which are commercial by General Electric Company, Silicone Products Division of Waterford, NY, under the designations UV 9300 and UV 9380C-D1, are available, in parts by weight of 100 parts or 2.5 parts. When a such silicone mixture is used on the substrate coating, have application levels of at least 0.25 g, preferably 0.5 to 8.0 g silicone per square meter surface satisfactory performance Although other coating levels for certain Dependent applications of, for example, the nature of the substrate and the characteristics the lotion may prove suitable. Other suitable treatment materials include, but are not limited to, fluorinated materials, such as fluoropolymers (e.g., polytetrafluoroethylene (PTFE), which is commercially available under the trade name TEFLON) and chlorofluoropolymers. Other materials that are suitable can prove include hydrocarbons, such as petrolatum, latex, Paraffins, quaternary Ammonium compounds, oils, Essences and the like, though silicone materials, preferably long-chain and / or branched-chain silicones because of their biocompatibility properties currently preferred for use in the wet wipes. Preferred silicones include dimethicone copolyols. Others include any of commercial water repellents used in McCutcheon's, Volume 2: Functional Materials 1995, McCutcheon's Division, The Manufacturing Confectioner Publishing Co. (The Revelation the same is incorporated herein by reference), of which GrapHsize, which is available from Akzo Nobel Chemicals Inc., and Norgard 10-T, which is available from Norman, Fox & Co., are preferred. Other suitable means include coating with photosensitive Resins. According to claim 1 is the separation force between towels adjusted by chemical agents selected from the group of quaternary ammonium compounds and dimethicone copolyols. According to the present

invention can such chemicals on the surface of the field through each Agents, such as coating, spraying, extruding, printing or impregnating the surface be applied to itself or the substrate fibers. These chemicals can the substrate as a component of the lotion or independently thereof be added.

According to the present invention, the wet wipes are stacked and then placed in a rigid dispensing container 20 stored. The container 20 comprises a container body 21 which has a lower section 22 and an upper section 23 having. The container 20 may be provided in any shape, such as a cube, rectangular solid, cylindrical and the like, depending on the intended end use and the nature and shape of the wipes themselves. Preferably, the container 20 a rectangular solid body and is usually made of a body portion having a bottom wall 24 , End walls 25 , Side walls 26 and optionally an upper wall 27 having integrally molded. The container is preferably molded from any suitable plastic material by, for example, thermoforming or injection molding techniques. Suitable plastics include polypropylene, polyethylene, polystyrene, acrylonitrile butadiene styrene, polyesters, polyvinyl chloride, polycarbonate, and high density polyethylene. Preferably, the container 20 molded from polypropylene. As a rule, these containers can have dimensions of about 30 cm by 20 cm by 12 cm, preferably 25 cm by 15 cm by 10 cm.

In a preferred embodiment, the container of the present invention is with. a lid 28 Mistake. The lid 28 is usually on top of the container body 21 at the top section 23 and may be fixed thereto by means such as threads, snap nipples, intermeshing ribs, frictional engagement and the like. Alternatively, the lid 28 on the container body 21 be attached by a hinge mechanism. The towels are either directly in the container 20 arranged or alternatively, the towels can be stacked and then packaged in a moisture impermeable envelope, such as a film or polymeric film wrapper, to provide a refill package for use in refilling the container.

The upper section 23 of the container body 21 which is either integral with the container body 21 and with an upper wall 27 is provided or which by the lid 28 is provided, which on the container body 21 is fixed with a discharge opening 29 Mistake. According to the present invention, the dispensing opening is 29 selected to provide an open surface field of 14 cm ² to 35 cm ² . The opening has an S-shape.

 At the The most preferred is the opening a rectangular or oval shape. Preferably, the opening should be like this be provided that they is stiff and does not significantly shape during use changed and there should be no sharp edges or corners on which the cloths or fingers of the consumer could get caught. The upper portion of the container body may as well with a return be provided so that any surplus cloth substrate, which from the opening projecting, between the lid and the body portion are arranged can.

According to the present Invention is the substrate material usually with a liquid composition waterproof or coated. An advantage of the present invention is that the Stacking. Configuration without significant impact on the output mechanism a variety of compositions that use with the substrate material be allowed. This is not only useful in permitting nature composition can be varied but also allows that this Charging the composition over The stack can be varied to settle the composition to counteract the bottom of the stack. According to the present invention the term liquid refers Composition of any composition, which in a liquid form is present when the cloth is in contact with the surface. In general, the composition can be aqueous, alcoholic or an emulsion, either a water-in-oil or an oil-in-water emulsion or a multiple emulsion, preferably the emulsion is an oil-in-water emulsion. The emulsion may also contain a lipid phase, which by the application of minimal pressure, for example by wiping on the skin, broken can be. In general, the composition of 2 wt .-% to 50% by weight of said composition of active ingredients and of 50% % By weight to 98% by weight of water, preferably deionized or distilled, include. Of the active ingredient are preferably 2 wt .-% to 20 wt .-% present in the oil phase and the rest is in the watery Phase present.

According to the present Invention are the wet wipes with an emulsion composition containing an oil phase in the Range of I wt% to 20 wt%, preferably 2 to 10 wt% of the composition. Advantageously, the oil-based Phase of natural Sources, such as vegetarian or animal oils, or may be synthetic or any mixtures thereof. suitable vegetable and animal oils for use herein include waxes, such as beeswax, Lanolin, candelilla and oils such as glycerol esters and glycerol ethers, fatty acid alcohols, Fatty acid esters and fatty acid ethers, such as caprylic and capric triglycerides and octyl palmitates. Suitable mineral oils Include petroleum-based oils such as paraffin and petroleum jelly. Synthetic oils for use herein include ethylene polymers, for example Polyethylene wax, or silicone-based oils. Include suitable silicone oils Polydimethylsiloxanes, volatile Cyclo-methicones, dimethiconols, siloxysilicates and amino and phenyl derivatives of siloxanes and mixtures thereof. Examples include Dimethicon (Dow Corning 200 fluids), cyclomethicone and dimethiconol (Dow Corning 1401 fluid), cetyl dimethicone (Dow Corning 2502 fluid), dimethicone and trimethylsiloxysilicate (Dow Corning 593 fluid), cyclomethicone (Dow Corning 244, 245, 344 or 345 fluid), phenyl trimethicone (Dow Corning 556 fluid), or combinations thereof.

The oil-in-water emulsions usually require emulsifying agents. The emulsifying agents, which can be used in the present invention are preferably to primary emulsion formation of oil-in-water emulsions. The emulsifying agent is in the range of 0.02 wt% to 5.0 wt%, preferably from 0.02% to 3.0% by weight of the composition herein.

In a preferred embodiment, the emulsifying agent is a polymer species of emulsifying agent, such as a copolymer of C10-C30 alkyl acrylates and one or more monomers of acrylic acid, methylacrylic acid or one of its simplest, crosslinked with an allyl ether of sucrose or an allyl ether of pentaerythritol , The emulsifying agents which are thus useful in the present invention include ceteareth-12, ceteareth-20 or pemulen TR1 and TR2 available from BF Goodrich Company, USA. However, other known emulsifying agents, such as ethoxylated fatty alcohols, glycerol esters of fatty acids, soaps, sugar derived drugs are also suitable for use herein. Other useful emulsifying agents include those disclosed in detail in EP-A-328,355.

According to the present Invention, the composition may be a stability agent or a preservative include. Stability means which are suitable for use herein include phenoxyethanol, which is preferably present in the range of 0.1 to 1.0%, Sodium benzoate, potassium sorbate, methylparaben, propylparaben, ethylparaben, Butyl paraben, sodium benzoate, potassium sorbate, benzalkonium chloride and disodium salted ethylenediaminetetraacetic acid (hereinafter referred to as EDTA) or other EDTA salts (Sequestrene). Sequestren is a series of complexing agents and metal complexes in general of ethylenediamine tetraacetic acid and Salt. The total amount of stability agents should be in the range from 0.1% to 4.0% by weight of the composition.

The Composition of the present invention may further be 0.02 Wt .-% to 5.0 wt .-% of said plasticizer composition or moisturizers. Preferably, the plasticizer is water soluble and includes polyhydric alcohols, such as propylene glycol, Glycerin and water-soluble Lanolin derivatives.

Further optionally ingredients used in the present invention can be include antifungals, antibacterial agents, skin protecting agents, oil-soluble cleaners, water-soluble surfactants or detergents, preferably nonionic or amphoteric, pH adjusters, perfumes, fragrances and the like.

In order to the emulsion provides the wet wipe with good cleaning performance, should the emitted viscosity less than 500 mPas, preferably in the range of 300 to more as 100 mPas, and most preferably in the range of 180 to 120 mPas be.

At the Manufacture of wet tissue products according to the present invention For example, the composition is applied to at least one surface of the substrate material applied. The composition can be used at any time during the Production of the wet wipe are applied. Preferably the composition can be applied to the substrate after the substrate has been dried. Every variety of application methods, which lubricious Materials which have a melted or liquid consistency, spread evenly, can be used. Suitable methods include spraying, imprinting (for example, anil impression), coating (e.g., gravure coating or flood coating), extrusion, wherein the composition by Tubes is forced in contact with the substrate while the substrate over the Pipe guided or combinations of these application techniques. For example spray the composition on a rotating surface, such as a Calender roll, which then the composition on the surface of Substrate transferred. The composition can either be on a Surface or on both surfaces, preferably both surfaces of the substrate. The preferred method of application is extrusion coating.

The Composition may also be non-uniform on the surfaces of the Substrate can be applied. By non-uniform is meant that, for example the crowd, the pattern of. Distribution of composition over the Surface of the Substrate can be varied. For example, some of the surface of the substrate may be larger or larger have minor amounts of composition, including sections the surface, which do not have any composition on them. The Composition is usually in an amount of about 0.5 g 10 g per gram of substrate, preferably from 1.0 g to 5 g per gram Substrate, most preferably from 2 g to 4 g per gram of dry Substrate applied.

Preferably the composition can be applied to the substrate at any point, after it has been dried, applied. For example The composition can be applied to the substrate before calendering or be applied after calendering and before it becomes a starting roll being rolled up. In general, the application is attached to a substrate accomplished which is of a roll having a width equal to a substantial one Number of towels, which are intended to be produced has been unrolled. The Substrate with the composition applied thereto becomes as follows separated to individual towels to create.

TEST METHODS

Release force test methods

This Method measures the force required to separate wet wipes. It imitates that Machining of cloths, however, variables such as differences in folding or packaging design, eliminated. The test results depend on the nature of the substrate and the lotion, but also the folding design from.

Making the sample

• 1. A stack of 20 dry folded towels is weighed and the weight to be achieved with a given lotion load is calculated. The cloths are placed in a plastic box and allowed to soak in with approximately 125 ml of lotion. Half of the lotion is poured onto the stack, then it is turned over and the remaining lotion is added. The stack is then squeezed out in the box by hand to make the lotion soak the entire sample.
• 2. The stack is removed from the plastic box and onto a Plastic block placed, which is slightly larger than the stack. With another plastic block, the excess lotion is squeezed, until the required weight for one given lotion charge (calculated in step 1) is reached.
• 3. The wipes are then unfolded one at a time and placed one upon the other on a plastic film, with an overlap corresponding to the length of the overlap of the folded configuration (as in Figs 3a with l ₁ and l _{1 is} illustrated). The upper surface of the cloth stack is then covered with the plastic film.
• 4. The stack is placed on the ground / a hard surface. One piece of non-deformable plastic, at least as large as the overlapping zone, is placed on top of it, and the pile will last 15 seconds compressed with 20 kilograms. As weight can be a canister of water used to give a total weight of 20 kg. You should go for it Take care to lower the canister very slowly to ensure that the Initial pressure exerted by the canister does not exceed 20 kg.

Measuring de separating force

•  1. The samples should be taken immediately after the Edit be measured. However, this is simultaneous preparation of two samples, then compressing both, then measuring both, acceptable.
•  2. To measure the release force, the upper plastic film open. Often, the first cloth remains attached to it or at least becomes loose it. In any case, the first cloth is removed and measuring starts with the pair of cloth 2 and 3.
• 3. Cloth 3 is carefully separated from the stack and therefore also cloth 2 which sticks to it on top. The wipes are clamped in the tensile strength measuring machine. She pulls her apart and gives the required force in grams.
• 4. The entire stack is measured in pairs. The last cloth is also disposed of, so that every sample from originally 20 towels 9 data points will result.
• 5. A standard deviation is usually in one range from approximate 5%.

Claims (4)

An output container ( 20 ), said container ( 20 ) contains a plurality of wet wipes, said container ( 20 ) a container body ( 21 ), said container body comprises a lower portion ( 22 ) and an upper section ( 23 ), said upper section ( 23 ) a dispensing opening ( 29 ), characterized in that said opening ( 29 ) has an S-shape and a cross-sectional area of from 14 cm ² to 35 cm ² and said sheets have an average release force between two sheets as defined by the test method herein of from 75 g / cm ² to 250 g / cm ² and Separation force between wipes is adjusted by chemical means selected from the group of quaternary ammonium compounds and dimethicone copolyols. An output container ( 20 ) according to claim 1, wherein said separation force is from 100 g / cm ² to 200 g / cm ² . An output container ( 20 ) according to claim 1, wherein said separation force is from 125 g / cm ² to 175 g / cm ² . A dispensing container having a plurality of wipes ( 20 ) according to claim 1, wherein each of said sheets is folded in a Z-fold configuration and nested with at least one adjacent sheet.