JP5118483B2 - Tissue paper with protruding lotion deposit - Google Patents

Abstract

A paper tissue and products made from paper tissue, such as paper handkerchiefs, facial tissues, bath and cosmetic tissues, paper tissue wipes of any kinds and the like. The invention also relates to tissue paper including deposits of lotions on the surface of the tissue paper that protrude a significant height above the average plan of the tissue.

Description

  The present invention relates to tissue paper and products made from tissue paper. In particular, the present invention relates to a tissue comprising a lotion deposit having a significant height above the average plane of the tissue surface.

  Products made from paper webs or sheets, tissue paper, sometimes called tissue, tissue layers, paper ply or tissue paper web, and paper handkerchiefs, paper kitchen towels or bath tissue, toilet paper or facial tissue, It finds widespread use in society and is well known in the art.

  Tissue paper is generally made by laminating wet cellulose fibers on a net to form a layer, adding various additives or other ingredients, and then performing a drying step. The other process steps before, during or after the paper making process described above aim to give the tissue the desired properties. The processing step is aimed at creating a final product from the tissue paper (s).

  Products made from tissue paper can be made by bonding multiple layers of tissue paper, also called ply, and can include a single tissue paper layer (single ply product). The plies can be held together in various ways, such as by embossing a multi-ply structure and / or by gluing to form the final product. In this specification, the final product is referred to as a tissue paper product. The final product made from one or more plies has an inner tissue (or ply) surface facing inward and two outer surfaces facing outward.

  Over the years, the important physical attributes of these tissue papers have been recognized as their strength and thickness / bulkness, their flexibility and smoothness, and their absorbency. Softness and smoothness are related to the tactile sensation that consumers perceive when grasping a particular product, rubbing against the skin and rolling in the hand.

  A relatively thick and soft disposable paper product, ie a product in the form of a paper handkerchief, is known. For example, Tempo®, sold by Procter & Gamble Company, is a multi-ply paper product having a thickness of about 0.3 mm, gaining experience as being thick and flexible. High calipers convey to consumers the concept of high dry and wet strength. High wet strength, also referred to as wet burst strength, prevents tearing or rupture, especially in the case of a paper handkerchief, which in turn prevents the user's hand from being contaminated with mucus or other body fluids.

  A common way to improve the smoothness of the tissue surface is to calender the material. Another way to improve the smooth feel perceived by users of tissue paper products such as handkerchiefs is to supplement the tissue paper composition with some additives during the papermaking and / or processing stages. is there. These additives have the effect of smoothing the tissue paper so that the user feels the tissue paper is more flexible and smooth. Alternatively or additionally, some additives have the effect of smoothing and hydrating the skin of the user touching or using the tissue paper product, for example. This latter effect is usually obtained by partial transfer of the additive to the skin during use, and in this way the effect of the additive on the skin persists beyond the contact period between the paper tissue product and the skin. Let

  The smoothing lotion usually has a hydrophobic character or contains a hydrophobic compound. The presence of lotion on the surface of the tissue paper can adversely affect the properties of the tissue paper. First, masking the hydrophilic tissue surface with a hydrophobic lotion can reduce the absorbency or rate of absorption of the tissue. This has an undesirable effect on the user. For example in a paper handkerchief, a tissue with lotion takes longer to absorb a runny nose than a tissue without lotion. Secondly, the lotion may move from the tissue surface through the tissue paper structure, reducing the hydrophilicity of the tissue paper and not providing sufficient lotion on the tissue surface, which may give the skin a smoothing effect become unable. The anticipated conventional method corresponding to the migration of lotion over time uses a relatively large amount of lotion to ensure a certain amount of usefulness on the tissue surface even after prolonged storage. That is. In other words, excessive lotion is created on the freshly produced tissue paper, inducing a greasy negative feel during use (and even further reducing the absorbency of the tissue paper). Third, the lotion coating the fiber is less likely to be released from the tissue during use and therefore less likely to move to the user's skin. Moreover, because of the relatively high cost lotion ingredients, reducing the amount of tissue lotion has economic advantages.

  Therefore, there is a need to provide a tissue paper that exhibits a relatively large amount of lotion available on the tissue surface in the form of a deposit that protrudes and is isolated to a significant height from the tissue surface.

  Furthermore, there is a need for improved smoothness of tissue, improved absorbency of tissue paper, and improved lotion mobility to the user's skin without improvements that are harmful to one.

To solve the problems associated with the prior art, the present invention is characterized in that the tissue has first and second opposing surfaces comprising a lotion on at least one surface of the tissue paper. Provide tissue paper. The lotion is present in a substantially separable protruding deposit on the first side, the tissue paper has a tissue volume of 5.2 cm ³ / g or less, and the protruding deposit is at least 30 μm. Has an average height.

  The present invention provides a tissue paper that exhibits a high level of surface smoothness and flexibility, high absorbency, and high strength and bulkiness. These seemingly contradictory features were combined by the following inventive concept.

  For the purpose of improving softness / smoothness and having a smoothing effect on the skin, the composition “lotion” is preferably added to the tissue during the processing stage. In using tissue paper articles, some lotions can move from the tissue to the user's skin. Lotions therefore induce a long-term smoothing effect on the skin. On the other hand, the lotion may be referred to as a smoothing or softening lotion or composition.

  Lotions may contain softening / binding inhibitors, emollients, immobilizing agents and mixtures thereof. Suitable softening / bonding inhibitors include quaternary ammonium compounds, polysiloxanes and mixtures thereof. Suitable emollients include propylene glycol, glycerin, triethylene glycol, spermaceti or other waxes, petroleum jelly fatty acids, fatty alcohols and fatty alcohol ethers having C12 to C28 carbon atoms in the fatty acid chain. And mineral oils, i.e. silicone oils such as dimethicone and isopropyl palmitrat and mixtures thereof. Suitable fixing agents include waxes, fatty alcohols, fatty acids such as ceresin wax, microcrystalline wax, petroleum wax, Fischer-Tropsch wax, paraffin wax, stearyl alcohol and paraffins, polyhydroxy fatty acid Examples include esters, polyhydroxy fatty acid amides, and mixtures thereof. In most cases, lotions contain at least one fixative and emollient. The lotion may be an emulsion or suspension. Other optional ingredients include fragrances, antibacterial active substances, antiviral active substances, disinfectants, pharmaceutically active substances, film forming agents, deodorants, opacifiers, astringents, solvents and the like. Specific examples of lotion components include camphor, thymol, menthol, chamomile extract, aloe vera, calendula.

  “Protruding deposit” means a protruding deposit defined as the deposit of a lotion on tissue paper protruding above the average plane of the tissue surface (in some embodiments, at least 25 micrometers).

  “Average height of protrusion deposit” means the average height of each data point that is at least 25 micrometers above the average plane of the tissue surface (provided by the method described below).

In this specification, the terms “tissue paper”, “tissue paper web”, “tissue web”, “tissue”, “paper” and “web” are used interchangeably. The present invention is generally useful for, but not limited to, conventional felt compressed tissue paper, bulky compressed tissue paper, and tissue paper consisting of bulky uncompressed tissue paper and air-pass dried paper. The tissue paper may be in a homogeneous or multi-layer configuration and the tissue paper product made therefrom may be in a single ply or multi-ply configuration. The tissue paper preferably has a basis weight between about 10 g / m ² and about 65 g / m ² and a bulk of about 5.2 cm 3 / g or less (preferably 5.0 cm 3 / g or less). More preferably, the basis weight is about 40 g / m ² or less. Compressed tissue paper and methods for making such paper are well known in the art. Such paper is typically made by depositing a papermaking furnish on a perforated forming wire. When the furnish is deposited on the forming wire, it is called a web. The web is dewatered by pressing the web and drying at high temperature. The dewatered web is then further squeezed and dried by a steam drum device known in the art as a Yankee dryer. Available wood pulps include chemical pulps such as kraft pulp, sulfite pulp and sulfate pulp, and mechanical pulps including, for example, groundwood pulp, thermomechanical pulp and chemically modified thermomechanical pulp. In addition to papermaking fibers, the papermaking furnish used to make the tissue paper structure has other components or materials added to those known in the art or later known. Good. The type of additive desired will depend on the end use of the individual tissue sheet considered. For example, in products such as toilet paper, paper towels, facial tissue and other similar products, high wet strength is a desirable attribute. Accordingly, it is often desirable to add chemicals known in the art as “wet strength” resins to papermaking furnishes. A general paper on the types of wet strength resins used in the paper technology field is TAPPI Research Paper Series No. 29, Wet Strength in Paper and Paperboard, Paper and Pulp Technology Association (New York, 1965). It has been found that the tissue paper of the present invention can have a moisture content between 0-20% (% by weight), but optimal results are obtained at a moisture level of at least 4% (% by weight).

  The tissue paper of the present invention may be formed from a layer of unique material or may be a multilayer tissue paper web. The terms “multilayer tissue paper web, multilayer paper web, multilayer paper web, multilayer paper sheet and multilayer paper product” are all used interchangeably in the art, preferably two or more preferably composed of different fiber types. Refers to a sheet of paper made from the above layers of aqueous papermaking furnish, and typically the fibers are relatively long conifers and relatively short hardwoods for use in tissue papermaking. The layer is preferably formed from the deposition of a separate stream of diluted fiber slurry onto one or more endless perforated surfaces. If the layers are initially formed on separate perforated surfaces, the layers can be subsequently combined in a wet state to form a multilayer tissue paper web.

  The “tissue paper product” of the present invention is a finished product such as a kitchen towel or a paper handkerchief made from one or multiple plies of the above tissue paper. Each ply of a multi-ply paper product may be made of different materials and may be manufactured in different ways in papermaking or processing steps. As used herein, the term “single-ply tissue product” means comprising a single ply of tissue, so that the ply may be substantially homogeneous or a multi-layer tissue paper web. It may be. As used herein, the term “multi-ply tissue product” means that it is composed of one or more ply tissues. The ply of the multi-ply tissue product may be substantially homogeneous in nature or may be a multilayer tissue paper web.

  “Lotion basis weight of the lodge deposit” is the concentration of lotion expressed in grams per square meter within the lobe bump deposit on the tissue. This is the average value of the measured deposit. The lotion basis weight of the protruding deposit is measured by the method described below.

"Protrusion deposit density" is the average number of protrusion lotion deposits per tissue area expressed in square cm- ¹ (sqcm- ¹ ).

  “Tissue lotion basis weight” is the total lotion concentration of the lotion on the tissue expressed in grams per square meter (also referred to as total or total basis weight or concentration). Basis weight may be measured by any standard method, such as solvent extraction, or may be subtracted from process conditions (amount of lotion deposited on tissue divided by total area of tissue).

It would be desirable to provide a smooth tissue that contains a lotion that can be easily transferred to the skin of a tissue user. According to the present invention, the careful distribution of the lotion on the tissue as a number of separable deposits improves the mobility of the lotion from the tissue to the user's skin. Protrusive deposits that have a significant height above the average plane of the tissue surface are believed to have greater mobility with respect to the user's skin and thus provide the best overall smoothness of the tissue. Deposits that protrude at least 25 μm above the average plane of the tissue surface have been found to be most beneficial. Preferably, the deposit projects at least 30 μm, 35 μm, or at least 50 μm. Useful effects were best observed when the protrusion deposits were applied to tissue paper of limited bulk (ie, less than 5.2 cm ³ / g, or 5.0 cm ³ / g).

  Also, the total basis weight of the lotion on the tissue is 9 g / square meter or less, 6 g / square meter or less, 4.5 g / square meter or less, 3.0 g / square meter or less and most preferably 2 g / square meter or less.

  In some embodiments, the ratio R is

と見なされる。

Is considered.

  Useful effects are observed when R is greater than 0.005. In preferred embodiments, R may also be 0.01, 0.02, 0.05, 0.1, 0.2, or 0.3.

  It has been observed that useful effects are obtained in some embodiments when the density of the protrusion deposits is at least 1, 3, 5 or 10 per square centimeter of tissue.

  In some embodiments, the lotion can be visualized by the osmium tetroxide staining described herein. In other embodiments, the lotion can be visualized by infrared spectroscopy (IR spectroscopy), which is referred to herein.

  In such embodiments, the total basis weight of the lotion on the tissue is generally at least 0.3 g / square meter, 0.6 g / square meter, 1.0 g / square meter, 1.5 g / square meter, or 2.5 g / square meter. .

In some embodiments, it has been found that a relatively large area of tissue covered by a relatively high (or altitude) deposit is preferred. This provides a product with higher lotion mobility. This is the ratio R ₂ ,

で示される。

Indicated by

R ₂ is at least 0.005, 0.001, at least 0.05, or at least 0.08.

  In some embodiments, the present invention relates to multiple tissue products. When a multi-tissue product includes two plies, the present invention is fully effective when at least one of the outer surfaces (outward facing surfaces) has more lotions than its corresponding inner surface (inner facing surface). I understood it. This can be measured with a scanning electron microscope. If the multiple tissue product has at least 3 plies, lotion mobility may be preferred when at least 60%, at least 70%, at least 80%, or at least 90% of the lotion is placed on one of the outer plies. all right. Indeed, the lotion present on the inner ply has less lotion movement on the user's skin.

Lotions As described herein, the present invention is particularly directed to smoothing lotions. Any type of additive or compound is described as long as the physical properties (eg, melting point, viscosity) and application temperature are adjusted to obtain the desired distribution pattern of the additive or compound applied to the surface of the tissue paper It should be noted in particular that it can be applied by methods. These additives or compounds include hydration lotions, soaps, moisturizers, sun-protections, makeup-removing ingredients, anti-aging, disinfectants, and more generally cosmetic / therapeutic additives / compounds, Mention may be made of detergents, soaps, waxes, cleaning additives and more particularly compounds for cleaning, maintenance, protection of objects, surfaces or machine parts and treatment.

  Lotion is a heterogeneous composition in most instances. Lotions may include solids, crystalline gel structures, polymeric materials below the glass transition point, multiple phases (such as oil and aqueous phases) and / or emulsifying components. It can be difficult to accurately measure the melting temperature of a lotion, ie, it can be difficult to measure the temperature of a liquid shape, a quasi-liquid shape, a quasi-solid shape and a transition between solid shapes. The terms melting temperature, melting point, transition point and transition temperature are used interchangeably herein and have the same meaning.

  For the purposes of the present invention, it is considered that not only the melting temperature but also the rheological properties are related to the definition of the shape or state of the lotion (liquid, solid, quasi-liquid, quasi-solid). For the purposes of the present invention, a liquid or quasi-liquid lotion is defined as being able to flow, move and transition, for example, under the resistance forces encountered during the application process. A solid or quasi-solid lotion cannot flow freely and is somewhat immobilized at that location. For example, a lotion could be said to be a liquid or quasi-liquid if it can be applied to a rotating surface and removed from the use process conditions. If the lotion does not migrate very freely from the tissue surface into the tissue internal structure at room temperature, ie 23 ° C., until the product is normally used, the lotion will be said to be solid or semi-solid.

The lotion may contain a surface treatment agent. Non-limiting examples of suitable surface treatment agents that may be included in the lotion include polymers such as polyethylene and derivatives thereof, hydrocarbons, waxes, oils, silicones (polysiloxanes), quaternary ammonium compounds, fluorinated hydrocarbons, Substituted C ₁₀ -C ₂₂ alkanes, substituted C ₁₀ -C ₂₂ alkenes, especially derivatives of aliphatic alcohols and fatty acids (fatty acid amides, fatty acid condensates and fatty alcohol condensates etc.), polyols, polyols (esters and ethers etc.) It can be selected from the group consisting of derivatives, sugar derivatives (such as ethers and esters), polyglycols (such as polyethylene glycol) and mixtures thereof.

  Lotions may include oils and / or emollients and / or waxes (any or all of which may be mobile agents) and / or immobilizing agents. In one embodiment, the lotion comprises about 10% to about 90% oil and / or liquid emollient and about 10% to about 50% fixative and / or about 0% to about 60% petrolatum and desired. To include the remainder of the vehicle.

  The lotion may be heterogeneous. It may include solids, gel structures, polymeric materials, multiple phases (such as oil and aqueous phases) and / or emulsifying components. It can be difficult to accurately measure the melting temperature of a lotion, ie, it can be difficult to measure the temperature of a liquid shape, a quasi-liquid shape, a quasi-solid shape and a transition between solid shapes. The terms melting temperature, melting point, transition point and transition temperature are used interchangeably herein and have the same meaning.

  The lotion may be a semi-solid with high viscosity and will not substantially flow without an activation treatment during the lifetime of the product or gel structure.

  The lotion is shear thinning and / or can move violently around the skin temperature and can easily spread across the user's skin.

  The lotion may be in the form of an emulsion or suspension.

  In one embodiment of the lotion, the lotion has a moisture content of less than about 20% and / or less than about 10% and / or less than about 5% or less than about 0.5%.

  In another embodiment, the lotion is at least about 15% and / or at least about 25% and / or at least about 30% and / or at least about 40% to about 100% and / or up to about 95% and / or about 90%. % And / or up to about 80% solids.

  Non-limiting examples of suitable oils and / or emollients include glycols (such as propylene glycol and / or glycerin), polyglycols (such as triethylene glycol), petrolatum, fatty acids, aliphatic alcohols, aliphatic Alcohol ethoxylates, aliphatic alcohol esters and fatty alcohol ethers, fatty acid ethoxylates, fatty acid amides and fatty acid esters, hydrocarbon oils (mineral oil, etc.), squalane, fluorinated emollients, silicone oil ( Dimethicone and the like) and mixtures thereof.

  As an immobilizing agent, an emollient mainly remains on the surface of the tissue paper and / or sanitary tissue product and / or on the surface treatment composition on the surface of the tissue paper and / or sanitary tissue product, and is used by the user of the lotion. Examples are agents that can prevent emollients from being transferred into tissue paper so as to facilitate transfer to the skin. The immobilizing agent may function as a viscosity increasing agent and / or a gelling agent.

  Non-limiting examples of suitable immobilizing agents include waxes (ceresin wax, ozokerite, microcrystalline wax, petroleum wax, Fischer-Tropsch wax, silicone wax, paraffin wax, etc.), aliphatic alcohols (cetyl and / Or stearyl alcohol, etc.), fatty acids and their salts (eg, metal salts of stearic acid), mono and polyhydroxy fatty acid esters, mono and polyhydroxy fatty acid amides, silica and silica derivatives, gelling agents, thickening Agents and mixtures thereof.

  In one embodiment, the lotion includes at least one fixative and at least one emollient.

  In one embodiment, the lotion comprises a sucrose ester of a fatty acid.

  Lotions can contain movable reagents and are therefore considered mobile lotions. The movable lotion contains at least one movable agent and can be moved to an opposing surface, such as the user's skin, in use. In one embodiment, at least 0.1% of the movable lotion present on the surface that the user contacts is transferred to the user's skin during use. The amount of mobile composition that moves to the user's skin during use is determined by tapping the skin three times with Tegaderm Tape available from 3M after the user has used tissue paper and / or sanitary tissue products. Assuming that all components of the movable composition move equally, it can be measured by known methods such as analyzing the tape for the movable composition or components within the movable composition.

  Other optional ingredients that may be included in the lotion include vehicles, fragrances, especially persistent and / or long-lasting fragrances, antibacterial active substances, antiviral active substances, disinfectants, pharmaceutically active substances, film forming agents, deodorants. , Opacifiers, astringents, solvents, and cooling sensate agents. Specific examples of lotion constituents include camphor, thymol, menthol, chamomile extract, aloe vera, calendula, alpha bisalbolol, vitamin E, vitamin E acetate.

In one embodiment, the lotion is at least about 0.000 per user contact surface on the surface of the tissue paper and / or sanitary tissue product and / or on the surface treatment composition present on the surface of the tissue paper and / or sanitary tissue product. It is present at a level of 5 g / m ² and / or at least about 1.0 g / m ² and / or at least about 1.5 g / m ² . In another embodiment, the lotion is about 0.5 g per user contact surface on the surface of the tissue paper and / or sanitary tissue product and / or on the surface treatment composition present on the surface of the tissue paper and / or sanitary tissue product. From / m ² and / or from about 1.0 g / m ² and / or from about 1.5 g / m ² to about 10 g / m ² and / or up to about 8 g / m ² and / or up to about 6 g / m ² Exists at the level of.

  As used herein, a “vehicle” forms a suspension / emulsion with materials that may be used to dilute and / or emulsify surface treatment compositions and / or agents that form lotions. . In particular, the vehicle may be present in the surface treatment composition and / or lotion during application of the surface treatment composition to the tissue paper. The vehicle may dissolve the component (true solution or micelle solution) or the component may be dispersed throughout the vehicle (suspension or emulsion). The suspension or emulsion vehicle is typically a continuous phase. That is, other components of the dispersion or emulsion are dispersed throughout the vehicle at the molecular level or as individually separated particles.

  Materials suitable for use as the vehicle of the present invention include, but are not limited to, hydroxyl functional fluids including water. In one embodiment, the lotion comprises less than about 20% and / or less than about 10% and / or less than about 5% and / or less than about 0.5% by weight of a vehicle such as water. In one embodiment, the surface treatment composition is greater than about 50 wt% and / or greater than about 70 wt% and / or greater than about 85 wt% and / or greater than about 95 wt% and / or about 98 wt%. Contains more than% water and other vehicles.

  Preferred lotions of the present invention have been found to have a moisture content of less than 20%, less than 10%, less than 5% or less than 0.5%.

Example 1 of lotion formula
It has been found that the present invention is particularly effective (in weight percent) when the lotion has the following composition:

＊米国、シンシナティのプロクター＆ギャンブル・ケミカルズ（Procter & Gamble Chemicals）から入手可能
＊＊脂肪族アルコール類のショ糖エステル類、米国シンシナティのプロクター＆ギャンブル・ケミカルズ（Procter & Gamble Chemicals）から入手可能
＊＊＊クロンプトン社（CromptonCorporation）から入手可能
ローション処方の実施例２
ローションが下記の組成物を有する時、本発明が特に効果があることが見出された（重量パーセントで）。

* Available from Procter & Gamble Chemicals, Cincinnati, USA * Sucrose esters of aliphatic alcohols, available from Procter & Gamble Chemicals, Cincinnati, USA * Available from Crompton Corporation Example 2 of lotion formula
It has been found that the present invention is particularly effective (in weight percent) when the lotion has the following composition:

＊米国シンシナティのプロクター＆ギャンブル・ケミカルズ（Procter & Gamble Chemicals）から入手可能
＊＊クロンプトン社（CromptonCorporation）から入手可能
ローション処方の実施例３
ローションが下記の組成物を有する時、本発明が特に効果があることが見い出された（重量パーセントで）。

* Available from Procter & Gamble Chemicals, Cincinnati, USA * * Available from Crompton Corporation Example 3 of Lotion Formulation
The invention has been found to be particularly effective (in weight percent) when the lotion has the following composition:

＊米国シンシナティのプロクター＆ギャンブル・ケミカルズ（Procter & Gamble Chemicals）から入手可能
＊＊脂肪族アルコール類のショ糖エステル類、米国シンシナティのプロクター＆ギャンブル・ケミカルズ（Procter & Gamble Chemicals）から入手可能
各側に１．５ｇ／平方メートルと６ｇ／平方メートルの間のアドオンレベルですべての三つの処方がティッシュペーパー実施例１に記載のティッシュに適用された。

* Available from Procter & Gamble Chemicals, Cincinnati, USA * Sucrose esters of aliphatic alcohols, available from Procter & Gamble Chemicals, Cincinnati, USA All three formulations were applied to the tissue described in Tissue Paper Example 1 at an add-on level between 1.5 and 6 g / square meter.

  Process conditions and equipment are described in J. J. Kleinwaeschter, D.C. D. Butz, C.I. C. Marcott and G. It is described in US patent application entitled “Paper tissue with high lotion transferability” by G. DiGirolamo.

ティッシュペーパー実施例１：
以下の実施例で使用されるティッシュ紙は、約１５．４ｇ／平方メートルの坪量を有する従来の湿式圧縮、均質、乾燥クレープ加工されたティッシュ紙である。紙ウェブは約４０％北針葉樹クラフト紙及び６０％ユーカリ組成物を有する。抄紙に続いて、４枚の紙がオフライン組合せ操作で組合される。予め組み合わせた４プライの親ロールを、次に、４プライのティッシュ製品に加工する。４プライの親ロールが巻き戻され、２本の平滑なスチールカレンダーロールの間でカレンダされ、その後高圧エンボス加工が続きプライ結合を実現する。大部分のティッシュ紙は、高圧エンボス加工による影響を受けない。最後に、ティッシュは流れ方向に切断され、続いて横断方向の切断で約２１ｃｍ×２１ｃｍのシートに切断され、折り曲げられ、９枚の積み重ね体に積み重ねられ、個々のポケットパックに梱包される。上記方法で得られた４プライのティッシュペーパー製品は、約６０ｇ／平方メートルの坪量（適用されたローションを全く含まない）、０．２７ｍｍの厚み、４．５ｃｍ３／ｇの嵩、５０４ｇ／ｃｍ（１２８０ｇ／インチ）の流れ方向強度、２４０ｇ／ｃｍ（６１０ｇ／インチ）の横断方向強度及び約２００ｇの湿潤バースト（wet burst）を有していた。湿潤強度剤及び乾燥強度剤を含有していた。

Tissue paper Example 1:
The tissue paper used in the following examples is a conventional wet pressed, homogeneous, dry creped tissue paper having a basis weight of about 15.4 g / square meter. The paper web has about 40% north conifer kraft paper and 60% eucalyptus composition. Following papermaking, four sheets are combined in an off-line combination operation. The pre-combined 4-ply parent roll is then processed into a 4-ply tissue product. A 4-ply parent roll is unwound and calendered between two smooth steel calender rolls, followed by high pressure embossing to achieve ply bonding. Most tissue papers are not affected by high pressure embossing. Finally, the tissue is cut in the flow direction and subsequently cut into approximately 21 cm × 21 cm sheets with transverse cuts, folded, stacked into nine stacks and packed into individual pocket packs. The 4-ply tissue paper product obtained by the above method has a basis weight of about 60 g / square meter (without any applied lotion), a thickness of 0.27 mm, a bulk of 4.5 cm 3 / g, 504 g / cm ( It had a flow direction strength of 1280 g / inch, a transverse strength of 240 g / cm (610 g / inch) and a wet burst of about 200 g. It contained a wet strength agent and a dry strength agent.

Tissue paper example 2
The tissue paper used in the following examples is a conventional wet pressed, layered, dry creped tissue paper having a basis weight of about 14.6 g / square meter. While the outer layer contains about 100% eucalyptus fibers, the inner layer is composed of a furnish mix of about 85% north conifer kraft paper, 10% CTMP and about 5% eucalyptus fibers. Both layers have approximately equal basis weight (symmetric layer split). Following papermaking, four sheets are combined in an off-line combination operation. The pre-combined 4-ply parent roll is then processed into a 4-ply tissue product. A four-ply parent roll is unwound and calendered between two smooth steel calender rolls, followed by high pressure embossing to achieve ply bonding. Most tissue papers are not affected by high pressure embossing. Finally, the tissue is cut in the flow direction and subsequently cut into approximately 21 cm × 21 cm sheets with transverse cuts, folded, stacked into nine stacks and packed into individual pocket packs. The 4-ply tissue paper product obtained by the above method has a basis weight of about 60 g / square meter (without any applied lotion), a thickness of 0.27 mm, a bulk of 4.5 cm 3 / g, 465 g / cm ( It had a flow direction strength of 1180 g / inch, a transverse strength of 220.5 g / cm (560 g / inch) and a wet burst of about 200 g. Contains wet strength agent and dry strength agent.

Method:
Tissue paper bulk: Tissue bulk is defined as the reciprocal value of density (g / cm3). See column 13, lines 61-67 of US Pat. No. 5,059,282 (Ampulski et al.) Issued Oct. 22, 1991, describing how to measure the density of tissue paper. Prior to measurement, the paper is allowed to equilibrate for at least 2 hours at 23 ° C. and 50% (= −− 2%) relative humidity.

  Average lotion add-on level by solvent extraction (basis weight of lotion on tissue): Fast solvent extraction (ASE) using a model ASE200 available from Dionex Corp., a representative sample of about 2 g of lotion treated tissue. ). The following conditions are used: 11 ml extraction cell, solvent mixture: 50% acetone / n-hexane, temperature: 100 ° C. (5 minutes heating and resting), pressure: 6.8 MPa (1000 PSI), 2 at 100% flash. cycle. The solvent is evaporated and the residue is measured gravimetrically. Next, the lotion add-on

として計算される。

Is calculated as

Osmium staining: For analysis, a square tissue sample of approximately 4 cm x 4 cm is cut from a flat, unembossed, spread tissue product area (even if a smaller area is used if necessary) Good). All tissue samples are placed in an open container equidistant from an open container of 10 ml of 4% OsO ₄ solution (in water) under a glass staining dome in the hood. Vapor staining is typically performed for 24 hours. The staining duration is not critical and may be longer or shorter depending on the affinity of the lotion for osmium and the desired level of “blackness”. Staining is stopped when the sample reaches the best possible contrast between the lotion spots and the substrate. As the paper fiber slowly picks up the osmium stain and darkens, there is a point in the dyeing process where the lotion no longer reacts but the paper fiber continues to react, reducing the contrast between the lotion and the fiber.

  Sample preparation for surface analysis: The sample tissue is placed on a glass slide measuring approximately 5 cm × 7.6 cm (2 inches × 3 inches) with the surface to be analyzed facing up. The edge of the ply is carefully taped to the slide, creating a flat sheet.

  Surface analysis: The mounted sample was analyzed by a GFM Primos optical three-dimensional measurement system (Teltow, Germany) based on digital stripe projection technology. The system has a detector that includes a 2.7 × 2.1 cm field of view and 1300 × 1000 pixels. The operating software was Primos version 4.074. If possible, the full field of view should be used, and a smaller field of view should be used for analysis only if the sample does not contain a sufficiently large, flat, widened and unembossed area. The system produces a grayscale camera image (GS image) for each sample analyzed in addition to a 3D surface height image (3D image) calibrated in microns. The GS image was exported from the Primos software as a BMP image for further processing. The three-dimensional image was processed using the Primos software align function excluding tilt and exported as Fringe File Version 1 format (FD3).

  Surface Data Image Analysis: Both GS images (BMP) and 3D images (FD3) were imported into MatLab (MathWorks, Natick, Mass.) For all further image processing. Functions from the MatLab image processing toolbox v4.2 add-on were used for data processing. The 3D image was leveled with an average convolution filter of kernel size 151 and the resulting image was removed from the original 3D image. This corrected the image for any wrinkles or curvature of the sample that occurred during the loading procedure. The resulting image was then slightly leveled with a kernel size 5 median filter to remove all high frequency noise from the measurements. These operations produced an image with an average plane of the surface at zero height (m3D). The image was then thresholded, deleting all data that falls below 25 microns above the mean plane (mt3D).

Correlation between lotion area and data:
(A) Osmium staining The GS image of the osmium-stained sample was leveled with an average convolution filter with a kernel size of 151 and the resulting image was removed from the original GS image. This corrected the image for the non-uniform illumination characteristics of the Primos system. The resulting image was then slightly leveled with a kernel size 5 median filter to remove all high frequency noise from the measurements. This image is then scaled from (minimum, maximum) to (0, 1), with values less than 0.30 set to binary 1 and values greater than 0.30 set to zero. The operation was performed. This binary mask (BM) shows 1 where there is a darkly dyed lotion and zero elsewhere.

(B) Scanning Infrared Spectroscopy If the staining method is not suitable for identifying the lotion region, other methods, preferably infrared scanning spectroscopy, may be used to identify the lotion region. If the staining has a high lotion amount (these can protrude from the surface) cannot be separated from the rest of the surface region, for example, the lotion material does not stain or is sufficient to distinguish the lotion material from the background This method may be appropriate when not dyeing or, for example, when the substrate itself is dyed. A suitable method for identifying lotion regions by IR scanning spectroscopy is described in J. Am. J. Kleinwaeschter, D.C. D. Butz, C.I. C. Marcott and G. It is described in detail in a US patent application entitled “Paper tissue with high lotion transferability” by G. DiGirolamo. This method describes how to measure the local lotion basis weight of an area of 25 μm × 25 μm of a sample having an area of 0.5 cm × 0.5 cm or more.

  Preferably a sample of at least 1 cm × 1 cm is used. All pixels using an image analysis program such as AnalySIS (available from Soft Imaging GmbH, Germany) as described in the above-mentioned US patent application and having a local lotion basis weight of 10 g / sq. Meter By setting the binary mask BM to “1” and “0” for all other points, the file containing the local lotion basis weight is exported as an 8-bit grayscale bitmap file, which is desirable It may be converted into a binary mask BM. Appropriate fudicial marks in the image may be used to register a binary mask having a three-dimensional height image.

  In order to remove any data points that were not identified as binary mask (BM) lotions (dark areas), the resulting 3D image of the paragraph (mt3D) above is the binary mask (BM). It was multiplied by pixels. The area of the resulting image that was not shown as a BM lotion was zero. Area areas less than 0.10 square millimeters (225 pixels) were removed from the final image. In order to remove invalid data due to convolution operations, the largest kernel size half border used (151/2 = 75) was removed from all sides of the image and the final composite image ( FC).

  Data points in the FC that were not zero were projected onto the average plane (in the image FC, when the average plane was zero) and the area was calculated by summing the calibrated pixels. Also, the volume above the average plane was measured by summing the projected area pixels multiplied by the actual height of each pixel above the average plane. Individual area and volume regions were recorded for each sample and the sum, average and standard deviation of the area and volume were calculated. The measurement field of view was used to further calculate the lotion coverage area portion and lotion volume per sample area.

  The lotion basis weight (g / square meter) of the protrusion deposit is obtained from the average volume of deposit per area multiplied by the lotion density.

  The ratio R is then calculated by dividing the lotion basis weight of the deposit (g / square meter) by the lotion basis weight of the tissue (g / square meter).

  All documents cited herein are hereby incorporated by reference in their relevant parts, but the citation of any document should not be construed as an admission that it impairs the patentability of the present invention. Absent.

  While particular embodiments of the present invention have been illustrated and described, it would be obvious to those skilled in the art that various other changes and modifications can be made without departing from the spirit and scope of the invention. It is therefore intended to cover in the appended claims all such changes and modifications that are within the scope of this invention.

The display of the front view in the tissue surface of Example 1. FIG. Treat tissue with a lotion of 2.1g / sqm. Indication of the tissue surface of Tissue Example 1. Treated with the formulation of Example 1 at 2.1 g / square meter, showing the height of the protrusion deposit in gray intensity. Projected white area.

Claims (11)

At least one surface of the tissue paper has first and second opposing surfaces including a lotion containing a softening / binding inhibitor, an emollient, and a fixing agent, the lotion comprising the first The tissue paper has a tissue volume of 5.2 cm ³ / g or less, and the protruding deposit has an average height of at least 30 μm. Having tissue paper.   The tissue paper of claim 1, wherein the deposit has an average height of at least 35 μm.   Tissue paper according to claim 1 or 2, wherein the deposit has an average height of at least 38 µm. The ratio R is

The tissue paper according to any one of claims 1 to 3, wherein the ratio R is greater than 0.005.   The tissue paper according to claim 4, wherein the ratio R is greater than 0.01.   The tissue paper according to any one of claims 1 to 5, wherein the tissue paper comprises at least two protruding deposits per square centimeter of tissue.   The tissue paper according to any one of claims 1 to 6, wherein the lotion is detected by osmium tetroxide staining.   The tissue paper according to any one of claims 1 to 7, wherein the lotion is detected by scanning IR spectroscopy.   Tissue paper according to any one of the preceding claims, wherein the lotion comprises at least 30% fatty alcohols sucrose esters.   The tissue paper of claim 9, wherein the lotion comprises at least 10% stearyl alcohol. The tissue lotion basis weight is not more than 9 g / sqm, Tissue Paper according to any one of claims 1 to 10.

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