CN1483099A - Tissue paper penetrated with softening lotion - Google Patents

Abstract

The present invention relates to a tissue paper penetrated with a lotion composition being a liquid, viscous W/O emulsion comprising (A) 20 to 75 weight % of at least one oil, (B) 3 to 40 weight % of at least one non-ionic W/O emulsifier, (C) optionally 0.5 to 10 weight % of at least one wax, (D) 1 to 15 weight % of at least one humectant, (E) 6 to 25 weight % of water, The lotioned tissue paper of the invention shows an excellent surface softness and in particular bulk softness. Simultaneously it is capable of efficiently transferring lotion to the skin of the user.

Description

Infiltration has the thin paper of softening lotion

Technical field

The present invention relates to a kind of lotion thin paper of softness, specifically, the present invention relates to a kind of lotion thin paper that has the softness of loose pliability (bulk softness) owing to a kind of specific detergent composition that can permeate thin paper.

Background technology

Based on the compatibility of following production technology (wet-laying), regard " thin paper " production as a kind of paper technology.Thin paper production and papermaking different are that it is extremely low quantitatively, generally is lower than 65g/m ², and very high tensile energy absorption index.The tensile energy absorption index is obtained by the tensile energy absorption value, and wherein, the tensile energy absorption value is relevant with the test specimen volume (applying length, width, the thickness of the sample between the tensile load front jig) before the check.The conventional difference of paper and thin paper also is to be used to characterize the elastic modelling quantity as material parameter of the stress-strain characteristics of these planar products.

The reason that thin paper has high tensile energy absorption index is outer wrinkling or interior wrinkling.The former produces owing to pushing the paper web that adheres to the dry type cylinder, and this is the result of creping doctor effect, under latter event, is the result that speed difference caused between two silks (" fabric ") perhaps.A kind ofly often be called in the back in the technology of " (wet method) urgent shift (rush transfer) ", for example, form fabric that the translational speed of the paper machine of fabric shifts to greater than the paper web that forms as shifting the speed of fabric or TAD fabric (passing through air drying), coiling to a certain degree will be arranged when paper web is transferred fabric and occupies.Many prior art documents (as: EP-A-0617164, WO-94/28244, US-5607551, EP-A-0677612, WO-96/09435) are not referred to as " in wrinkling " describing when " not having and wrinkling " thin paper with urgent transfer techniques production.Interior wrinkling and outer wrinkling meeting makes paper web internal break that is still moist, plastically deformable by extruding and shearing, thereby makes it have bigger tensility than no wadding under load.The most of general functional character of thin paper or tissue paper product all derives from high tensile energy absorption index (seeing DIN EN 12625-4 and DIN EN 12625-5).

But the general aspects of thin paper comprises the elasticity that is easy to absorb tensile stress energy, its drapability, good textile-like, the high specific volume with perception thickness, high as far as possible liquid-absorbent and has suitable wet and dry strength and product external surfaces according to the difference of purposes to have interesting outward appearance.

Pliability is a critical nature of tissue paper product such as handkerchief, beauty treatment wiping, toilet paper, napkin/napkin paper, has said nothing of towel or kitchen towel, the feeler performance of generation when pliability represents that skin contacts with tissue paper product.

The extremely difficult definition although term " pliability " generally is appreciated that, because do not measure the physical method of pliability, so the industrial standard of different pliabilitys not being classified.

In order at least sxemiquantitative to detect pliability, subjective method decision pliability in fact commonly used.Carry out " panel test ", wherein, several trained personnels provide the comparison suggestion for this reason.

In simplification of terminology, pliability can be subdivided into soft surface degree and loose pliability according to its principal character.

The soft surface kilsyth basalt shows the feeler when finger mobile gently time institute's perception on the thin paper sheet of a for example people.The pine pliability is defined as in deforming process the perception impression of the resistance of the mechanically deform that produces by wrinkle or thin paper or tissue paper product folding and/or by the manual distortion of extruding.

A kind of method that increases thin paper pine pliability of WO96/25557 instruction relates to

A), thereby form net with the aqueous slurry wet-laying of cellulose fiber

B) water-soluble polyhydroxy compound is coated in wet online and

C) should net dry and wrinkling (wet net additive process).

Can also know from US4764418:, then help to improve pliability if some wetting agents such as polyethylene glycol are applied to dried net.

But the same with softening agent, the shortcoming when using wetting agent such as polyol is when contact, can be from the too many moisture of skin absorbs when for example blowing one's nose with the thin paper handkerchief.In addition, bating effect can not be satisfactory.

The WO96/24723 instruction improves the soft surface degree of thin paper by the discrete sediment of the anhydrous detergent composition of application oil-containing and wax.But, because its solid denseness, thus treatment compositions still be retained on the thin paper surface, so be helpless to loose pliability.In addition, usually make us feeling uncomfortable smectic or oily based on the anhydrous detergent composition of wax or oily material.

In addition, disclosed a kind of lotion feels uncomfortable especially among no rinsing agent such as the WO96/24723 for skin, because its moisture is low.

EPA1029977 relates to the composition of a kind of treatment paper product such as tissue paper product, and it comprises the oil of 30-90wt%, the wax of 1-40wt%, the emulsifying agent of 1-30wt% and the water of 5-35wt%.Although this detergent composition is than the easier infiltration thin paper of disclosed solid composite among the WO96/24723,, this detergent composition is solid or semisolid in the time of 30 ℃, and mainly is retained on the surface of thin paper.

DE19906081A1 discloses a kind of emulsion, and it contains polyhydroxy polycarboxylic-12-hydroxy stearic acid ester of (a) 5-25wt%, (b) the wax shape ester of 50-90wt% and (c) wax of 5-25wt%.The document also comprises the embodiment that handles thin paper with the above-mentioned W/O emulsion that contains about 20-25wt% water.These compositions are solid or semisolid (corresponding to the embodiment 1 of the lotion F among the EPA1029977) in the time of 30 ℃, and have and the identical permeability of lotion among the EPA1029977.

The purpose of this invention is to provide a kind of processing thin paper that can overcome prior art preparation shortcoming.

Specifically, the purpose of this invention is to provide the thin paper that a kind of usefulness can keep the stable detergent composition that can improve the pliability, particularly loose pliability of tissue paper product again to handle.

Another technical purpose of the present invention provides a kind ofly to be felt very comfortable and not to have oily or the lotion thin paper of smectic sensation for skin.

Summary of the invention

Infiltration has the thin paper of detergent composition can reach this technical purpose, and this detergent composition comprises:

(A) at least a oil of 20-75wt%,

(B) at least a nonionic W/O emulsifying agent of 3-40wt%,

(C) at least a wax of Ren Xuan 0.5-10wt%,

(D) at least a wetting agent of 1-15wt%,

(E) water of 6-25wt%,

Wherein, wt% is based on the value of detergent composition gross weight.Lotion at room temperature (23 ℃) is a viscous liquid.Its quite low viscosity helps its excellent permeation with respect to the known semi-solid detergent composition that is used for thin paper, and can prevent on its surface that is retained in the single or multiple lift tissue paper product.Under the situation of individual layer thin paper, this detergent composition fully permeates this layer of after-tack.Under the situation of multi-layered product, detergent composition reaches internal layer, and this will improve loose pliability greatly.In addition, if desired, this lotion can be transferred to activating agent on user's the skin.

The specific embodiment

Lotion thin paper of the present invention generally is applied to above-mentioned detergent composition dry thin paper net (not having lotion) and obtains.Preferably, the surplus water content of this thin paper net is no more than 10wt%.1, lotion

Oil, liquid nonionic emulsifying agent, wetting agent, water and optional wax are mixed homogenizing, obtain Water-In-Oil (W/O) emulsion, viscosity in the time of its 23 ℃ preferably is lower than 10000mPas, 10000mPas be general semi-solid lotion viscosity number (with axle speed be 5, the measurement of Bu Shi (Brookfield) the RVF viscosimeter of 10rpm; Below final detergent composition viscosity number usually all with a speed be 5, the measurement of the Bu Shi RVF viscosimeter of 10rpm is relevant).The viscosity number of measuring in the time of its 23 ℃ is preferably less than 7500mPas, more preferably 1500-5000mPas, particularly 2000-3500mPas.In addition, preferably 800-2500mPas, particularly 1000-2200mPas of the viscosity number of measuring its 30 ℃ the time.Viscosity number in the time of 40 ℃ is 500-1500mPas, particularly 600-1200mPas preferably.The viscosity number of this lotion in the time of 50 ℃ is preferably less than 500mPas, particularly less than 400mPas.

Although its viscosity is low, this detergent composition is stable in preparation and use, can not be separated into water and oil phase.

By using the small amount of solid component can improve the low viscosity of this lotion.The term of back " solid " or " liquid " refer to the physical state of (23 ℃) under the room temperature.Total content based on the solid constituent of detergent composition gross weight is generally less than 15wt%, particularly less than 10wt%.

According to preferably 25 ℃-70 ℃ of the fusion ranges of the solid constituent that the dsc analysis method of final detergent composition is measured, particularly 30 ℃-60 ℃.

This lotion just must not have the compound that contains silicone such as the existence of silicone oil or quaternary ammonium compound because will reach its bating effect, although do not get rid of these compounds of use.1.1. oil ingredient (A)

" oil " represents the oil that at room temperature (23 ℃) water-insoluble, organic, natural and synthetic, beauty treatment usefulness preferably have liquid consistency with term.The consumption of oil ingredient is 20-75wt%, preferred 30-60wt%.(back unless otherwise indicated, wt% is normally based on the value of detergent composition gross weight).

Oil ingredient can suitably be selected from these known oil of plant source, mineral oil or artificial oil.

Oil ingredient (A) preferably contains at least a oil that is selected from following kind:

Glyceride, it is single, two and/or three esters (fatty acid ester) (particularly two and/or three esters) of glycerine.Glyceride can obtain by chemical synthesis well known in the art, also can obtain with natural source (plant or animal).Fatty acid component preferably has 6-24, more preferably has 6-18, particularly 8-18 carbon atom.Aliphatic acid can be side chain or non-side chain, can also be saturated or undersaturated.According to the present invention, the preferred liquid glyceride that uses from plant source, particularly use and contain based on the mixture of two and glyceryl ester of C8-C18 aliphatic acid as key component modified liquid coconut oil (INCI title: cocoa glyceride, the trade mark that can produce with Cognis DeutschlandGmbH be that myritol  331 is purchased).Contain the crude vegetal of liquid glyceride, as soybean oil, peanut oil, olive oil, sunflower oil, Queensland nut oil or jojoba oil as key component.The basic ester of the dioxane that 6-24 carbon atom arranged (alkene) of symmetrical or asymmetric, straight or branched (the total number of carbon atoms of each alkane (alkene) base is preferably 12-24 carbon atom), as di-n-octylether (two caprylyl ether), two-(2-ethylhexyl) ethers, lauryl methyl ether, octylbutylether or two lauryl ether, preferably use di-n-octylether (two caprylyl ethers; Viscosity in the time of 20 ℃ is 2-5mPaS; The following describes the DGF method).The basic carbonic acid ester of dioxane (alkene) (the total number of carbon atoms that comprises the carbon number of carbonate unit preferably is no more than 45) that preferably has a C6-22 alkyl or alkenyl at least.Alkyl or alkenyl can be a straight or branched.The thiazolinyl unit can have more than one pair of key.They can pass through the ester exchange of known method (referring to Chem.Rev.96,951 (1996)) by dimethyl or diethyl carbonate in the presence of the C6-C22 fatty alcohol and obtain.The general example of the basic carbonic acid ester of dioxane (alkene) is Capron alcohol, octanol, 2-Ethylhexyl Alcohol, Decanol, laruyl alcohol, different tridecanol, tetradecanol, cetanol, Palmitoleyl alcohol, stearyl alcohol, isooctadecanol, oleyl alcohol, trans oleic alcohol (petroselinyl alcohol), petroselinum alcohol, lining Na alcohol, lining Na enol, paulownia alcohol, arachidic alcohol, gadoleyl alcohol, docosyl alcohol, erucyl alcohol and Brazilian enol and cuts (partially) ester interchanged prod thereof, for example, they are that industrial methyl ester by high-pressure hydrogenation fat or oil base obtains.Low viscosity during from 20 ℃ considers that specially suitable is dihexyl, dioctyl, two-(2-ethylhexyl) or the two oleyl carbonic acid esters (viscosity of carbonic acid dioctyl ester: be 7mPaS in the time of 20 ℃; Measure with following DGF method).Therefore, preferably use short chain (C6-C10) alkyl or alkenyl carbonic acid ester.Preferably have 8-30, particularly the alkyl oil of 15-20 carbon atom, as saualane, squalene, paraffin oil, isohexadecane, Isoeicosane, poly decene or dialkyl cyclic hexane or mineral oil.

In addition, the polarity of the oil ingredient of selection (by prior art as can be known, this depends on chain length or esterification degree) preferably is not more than 5 debye, particularly is not more than 4 debye.

In a further preferred embodiment, in order to obtain the required permeability on thin paper, oil ingredient preferably suitably is selected from light viscosity oil, that is: the viscosity of measuring with Hoppler viscosimeter 20 ℃ the time is the oil of 1-100mPas, particularly 1-50mPas (as 1-20mPaS).

In addition, oil ingredient (A) preferably includes and (is preferably based on the 20wt% at least of oil ingredient, 40wt% at least particularly) at least a following substances: " oil (A ') ", the viscosity of measuring with Hoppler viscosimeter (DGF C-IV 7 methods) when it is preferably selected from 20 ℃ is lower than the oil of 30mPas, and/or be selected from and have 6-24 carbon atom (each alkyl) altogether, symmetrical or the basic ether of asymmetric dioxane (alkene) of preferred 12-24 carbon atom, or derived from the basic carbonic acid ester of straight or branched dioxane (alkene) of C6-22 fatty alcohol.These oil viscosities of measuring with said method preferably are lower than 20, more preferably less than 15, particularly are lower than 10mPas.

In a further preferred embodiment, oil ingredient (A) comprises and (is preferably based on the 20wt% at least of oil ingredient, 40wt% at least particularly) at least a following substances: " oil (A ") "; its viscosity is preferably greater than the viscosity of oily A '; specifically; its in the time of 20 ℃ with viscosity of Hoppler viscosimeter (DGF C-IV 7 methods) mensuration greater than 30mPas (preferably being 40mPas at least) and be not more than 100mPas, and/or be a kind of oil (A ") that is selected from glyceride, natural oil and alkyl oil at least.

Preferred oil (A ') and (mixture of A "), the particularly basic ether of (A ') dioxane (alkene) or the basic carbonic acid ester of dioxane (alkene) and (mixture of A ") glyceride, alkyl oil or natural oil of using.Especially preferably use the mixture of basic ether of dioxane (alkene) and glyceride.

If with wherein a kind of part as oil ingredient (A) of these oil, then its part by weight based on the oil ingredient total amount preferably is 20wt% at least, particularly 40wt% at least.

In an especially preferred embodiment, oil ingredient (A) comprises the basic ether of liquid dioxane (alkene) of liquid glyceride and the 80-20wt%, particularly 60-40wt% of 20-80wt%, particularly 40-60wt%.1.2.W/O emulsifying agent

Emulsifying agent or emulsifier combination (B) are nonionics, mainly contain the function that forms water-in-oil emulsion.The pliability that also helps thin paper.Its HLB value is 2.5-10, particularly 2.5-5 preferably.

Its content is 3-40wt%, more preferably 10-30wt% and 10-25wt%, particularly 15-25wt%.

The preferred liquid W/O emulsifying agent that uses is although can use the small amount of solid emulsifying agent, as long as the viscosity of the detergent composition that obtains is not too high.

Component (B) can suitably be selected from liquid polyol polyester (not being following said coemulsifier), wherein, has the polyol of two hydroxyls at least with at least a carboxylic esterification with 6-30 carbon atom.Polyol comprises monose, disaccharides, trisaccharide, sugar alcohol, other sugar derivatives, glycerine and polyglycereol, as two glycerine, triglycerin and senior glycerine.Such polyol preferably has 3-12, particularly 3-8 hydroxyl and 2-12 carbon atom (if the mixture of polyglycereol then is a mean value).Polyol is polyglycereol preferably, particularly the described polyglycereol with specific oligomer distribution of WO95/34528.

The aliphatic acid that the carboxylic acid that uses in the polyol polyester preferably has a 6-30 carbon atom (unless otherwise indicated, following term " aliphatic acid " is not limited to natural, even number, saturated or undersaturated long-chain carboxylic acid, but also comprises its odd number homologue or its side chain derivative.Unless otherwise indicated, aliphatic acid has 6-30 carbon atom, preferred 6-24 carbon atom).Aliphatic acid, its mixture or the condensation product (poly-(hydroxy fatty acid)) that especially preferably contain at least one hydroxyl.Preferably 12-24 of the carbon atom scope of above-mentioned carboxylic acid, aliphatic acid or hydroxy fatty acid, particularly 16-18.Particularly preferred poly-(hydroxy fatty acid) is optional and the hydroxy stearic acid, the particularly condensation product of 12-hydroxy stearic acid of poly-(castor oil acid) mixing, and said condensation product has the performance described in the WO95/34528.

Preferred solvent comprises the polyhydroxy polycarboxylic described in the WO95/34528 (hydroxy stearic acid ester), particularly has the polyglycereol poly-(hydroxy stearic acid ester) of performance described in this patent, as polyglycereol poly-(12-hydroxy stearic acid ester).This product can be purchased from Cognis Deutschland GmbH, and commodity are called Dehymuls PGPH.

The weight ratio of W/O emulsifying agent and oil ingredient is 0.2-2.0 preferably.1.3. coemulsifier (choosing wantonly)

In a further preferred embodiment, the amount based on the nonionic coemulsifier of detergent composition total amount that detergent composition contains reaches as high as 15wt%, more preferably 1-10wt%, particularly 3-10wt%.In order to stablize the W/O emulsion, preferably use and be selected from the lipophilic surfactant of HLB value as 1-8.Such surfactant is being known in the art, for example, and Kirk-Othmer, chemical encyclopedia (Enclypedia Of Chemical Technology), the third edition, 1979, the 8 volumes, those cited surfactants in 913 pages.Using under the situation of ethoxylated products, HLB value can be according to formula HLB=(100-L): 5 calculating, wherein, L is the part by weight of the fatty alkyl of lipophile group such as fatty acyl group.

Nonionic W/O emulsifying agent (B) and coemulsifier be used in combination the emulsion that can produce very fine dispersion, thereby increase the stability of detergent composition.

Preferred coemulsifier can be selected from

Liquid (partially) ester derived from sugar alcohol such as erythritol, xylitol, malitol, mannitol, D-sorbite and sugar alcohol acid anhydride such as sorbitan.This ester preferably has the ester group of carboxylic acid of the carboxylic acid, particularly above-mentioned definition of no more than 3 own 6-30 carbon atoms of deriving.Aliphatic acid preferably contains at least one unsaturated unit.Most preferably be, liquid ester is represented sorbitol ester, particularly derived from the ester such as the sorbitol laurate of short chain saturated fatty acid, or derived from the aliphatic acid with at least one unrighted acid, preferably has the ester of 16-22 carbon atom such as oleic acid.Particularly preferred sorbitol ester is the D-sorbite sesquioleate.

The HLB ester of aforesaid liquid (partially) ester is 3-9, particularly 3-5 preferably.

The esterification following substances can obtain mixed ester

A) have 6-30 carbon atom, at least a aliphatic acid of preferred 6-22 carbon atom, as cocinic acid,

B) neopentyl alcohol such as neopentyl glycol, dihydroxy methylpropane or preferred pentaerythrite,

C) carbon number is 6-30, at least a fatty alcohol of preferred 16-20, as stearyl alcohol and

D) have the tricarboxylic acids that is no more than 10 carbon atoms and preferably has a hydroxyl at least, as citric acid, those disclosed material among the preferred DE-A-1165574 is as solid two cocoyl pentaerythrite base distearyl citrates.

Each above-mentioned optional components is based on the consumption of detergent composition gross weight 1.5-7.5wt% preferably, as 3.5-5wt%.

In an especially preferred embodiment, use the above-mentioned sugar alcohol of 3.5-7.5wt% or the liquid ester of its acid anhydride.The preferred especially above-mentioned two kinds of coemulsifiers that combine with polyglycereol poly-(12-hydroxy stearic acid ester) that use.1.4. metallic soap (choosing wantonly)

In order to stablize the W/O emulsion, can also use metallic soap (reaching as high as 10wt%) based on following preferred chemical formula, its consumption is preferably 0.5-5wt%, particularly 0.5-4wt%:

(R ¹COO) _n-X wherein, R ¹Expression has 6-22 carbon atom and chooses wantonly a hydroxyl, preferably has the straight chain of 12-18 carbon atom, saturated or undersaturated acyl residue, and X is alkali metal (as Li), alkaline-earth metal (as Ca, Mg), Al or Zn, and n is the valence mumber of X.The preferred example of metallic soap comprises the stearate of zinc, calcium, magnesium or aluminium.1.5. wax (choosing wantonly)

Rheology and/or viscosity performance in order to regulate final detergent composition can add at least a wax, and its addition reaches as high as 10wt%, preferred 0.5-10wt%, particularly 0.5-4wt%.

Term " wax " (being sometimes referred to as " lipophile " wax) refers to natural or synthetic material in the art, but this material can be mediated, at room temperature be that granular crystal (but not being glassy), its appearance transparent are until opaque based on solid or fragility denseness fine powder.Useful wax is being higher than under 35 ℃ the temperature fusing and is not decomposing, and under the temperature of a little higher than fusing point, its viscosity is lower.

Useful wax is set forth among the DE-A19906081.The preferred native paraffin, particularly beeswax of using.

As the part or all of substitute of wax, can use fatty alcohol (C12-C24), fatty alcohol not only works in wax shape mode, and the denseness of final composition is produced same influence.1.6. wetting agent

Detergent composition comprises 1-15wt%, particularly (water-soluble) wetting agent of 5-10wt%.

Wetting agent has multiple function.At first, its bound water, and the evaporation of anti-sealing.In addition, wetting agent and other lotion component interaction, to the pliability of thin paper, particularly its loose pliability is useful.

Wetting agent is polyol preferably, polyol can be interpreted as to have two hydroxyls at least and preferably have only carbon, hydrogen, oxygen and nitrogen, the organic compound that preferably has only C, H and O to form.Wish that also wetting agent is a nonionic.

Although hydrophilic surfactant active's (the HLB value is 10 or bigger, for example referring to US4764418) can have humectant performance,, according to the present invention, wetting agent does not preferably have main hydrophobic molecule part, as aliphatic acid or fatty alcohol residue.

In addition, wetting agent preferably has liquid consistency, even can use small amount of solid, low melting point wetting agent under the very low situation of the part by weight of remaining solid lotion composition.

If use the liquid wetting agent, then its molecular weight (weight average) is more preferably less than 800 preferably less than 1000, particularly is not more than 600.

The example of suitable wetting agent comprises: glycerine, and poly alkylene glycol such as polyethylene glycol or polypropylene glycol are the polyethylene glycol of about 200-600 as weight average molecular weight; Neopentyl alcohol such as pentaerythrite or neopentyl glycol; Sugar alcohol such as threitol, erythrite, adonite (ribitol), arabite, xylitol, hexitol, sweet mellow wine and D-sorbite, sugar is as the polyglycol ether of polypropylene oxide addition product, methoxy poly (ethylene glycol), sugar alcohol such as the D-sorbite of D (+)-glucose, D (+)-fructose, D (+)-galactolipin, D (+)-mannose, L-gulose, sucrose, galactolipin, maltose, polyglycereol, glycerine, polyglycol ether of glycerine and composition thereof.Can also be with hyaluronic acid as wetting agent.

A kind of preferred humectants is a glycerine.1.7. water

Detergent composition contains 6-25wt%, particularly the water of 12-20wt%.For example, water can make user's skin that comfortable sensation as the lotion is arranged in the process of blowing one's nose with the handkerchief of handling.Water can also prevent that pure wetting agent from inhaling the moisture that goes in the human body skin.On the other hand, water content should not be higher than 25wt%, because if be higher than 25wt%, then the mechanical strength of thin paper is with impaired.

Can measure water content in the detergent composition according to the aquametry method of Karl Fischer.Also can carry out with the thin paper after handling.Extract whole lotions with appropriate organic solvent such as absolute ethyl alcohol then, then according to the moisture in the Karl Fischer mensuration ethanolic extract.If desired, can deduct the surplus water content of handling in the thin paper of back.1.8. additive

Detergent composition can randomly contain and is up to 10wt%, the additive of 0.1-5wt% particularly, as

Can stablize the preservative agent of detergent composition, as having the methyl isothiazoline (ketone) of chlorine substituent, as 5-chloro-2-methyl-4-isothiazoline-3-ketone or 2-methyl-4-isothiazoline-3-ketone; Phenoxyethanol or PHB ester, p-hydroxybenzoate preservative agent, pentanediol, sorbic acid or other compound as referring in " Kosmetikverordnung (Cosmetics Regulation), Anlage 4, Teil A undB ".

Bactericide, those bactericide described in DE-19906081A.

Enamel preferably from natural source (plant extract), for example, has skin moisten, anti-inflammatory (reduction skin irritation), callus, cytothesis, anti-inflammatory and/or itching-relieving action, as allantoin, aloe extract; The camomile extract that contains azulenes and α-bisabolol; Sea urchin; Dragosantanol; Panthenol; The licorice extract that contains the 18-glycyrrhetinic acid; The lime extract that contains quercetin and/or sugared rutin sophorin; Marigold (marigold oil); Urea; The optional sterol (can be purchased from Henkel, trade mark is " Generol ") that carries out ethoxylation; Chitosan (chitin of acetyl groupization); Anthocyanidin; The ginkgo leaf extract that contains quercetin and rutin sophorin; The horse chestnut that contains quercetin and amphene alcohol; Former or the vitamin E of vitamin or provitamin such as vitamin B5; Avocado oil; The white birch extract; Arnica; The brewer's wort rose extract of Sharon or St.John; Tea oil; The quaternary amine of cucumber, hop or witch hazel extract or composition, ethoxylation; Preferred α-bisabolol, allantoin or the panthenol of using;

Spices, those spices described in DE19906081; And/or

Dyestuff that is used to improve looks and pigment, " Kosmetische F  rbemittel " (Cosmeticcoloring agents) as " Farbstoffkommission der DeutschenFarbstoffgemeinschaft " publication, Verlag Chemie, Weinheim, 1984,81-106 page or leaf ") " described in those dyestuffs and pigment.

Above-mentioned additive can use separately, also can be used in combination.1.9. most preferred lotion

Based on present knowledge, can reflect that the most preferably detergent composition of best mode for carrying out the invention comprises following component:

The basic ether of liquid dioxane (alkene) of (A ') 15-30wt%,

(usefulness of A ") 15-30wt% has the liquid glyceride that at least a carboxylic esterification glycerine of 6-24 carbon atom obtains,

(B) the liquid W/O emulsifying agent of 15-30wt%, it is selected from the polyol polyester that has at least the polyalcohol of two hydroxyls to obtain with at least a acid estersization with 6-30 carbon atom,

(C) wax of Ren Xuan 0.5-4wt%,

(D) wetting agent of 5-10wt%,

(E) water of 12-20wt%,

(F) metallic soap of Ren Xuan 0.5-5wt%,

(G) coemulsifier of Ren Xuan 0.5-7.5wt% and

(H) additive of Ren Xuan 0.1-5wt%.2. preparation lotion

Can prepare detergent composition (water-in-oil emulsion) with known method.

A kind of method comprises: at room temperature mix and the even oil phase component that stirs, as oil ingredient (A), emulsifying agent (B), optional wax (C), optional solid (assisting) emulsifying agent and other oil soluble additive of choosing wantonly (stir about is 10 minutes usually).These components generally are high dissolubilities, can produce uniform mixture.At room temperature water component such as water, wetting agent and the water-soluble or water-dispersible additive that may add such as spices or preservative agent are mixed the back adds oil phase component in continuing the process that stirs mixture separately.After the continuous stirring (preferred about 10 minutes), with suitable dispersal device such as Ultraturrax type supraton or stator-rotor homogenizer (for example with the mixture homogenization that obtains, referring to Karlheinz Schrader, Grundlagen und Rezepturen der Kosmetika, H ü thigBuch Verlag Heidelberg, second edition, 1989, the 906-912 page or leaf).From prior art as can be known, the homogenizing condition is influential to the emulsion viscosity that obtains.If viscosity is too high, this is that the present invention is undesirable, and the energy that then may for example reduce in the homogenization process injects, and specifically, will reduce the rotating speed of rotor/stator system.

Can also be by at high temperature mixing oil phase and the water component prepares detergent composition of the present invention.For this reason, preferably oil phase and water component are heated to about 80-85 ℃ respectively.Then, when stirring under this temperature, lentamente the water component is added oil phase component, randomly carry out homogenizing.Preferred continuous stirring when stirring in the mode that can keep continuous motion is cooled off mixture after about 5 minutes.Avoid importing air simultaneously.Then, in order to improve stability and structure, preferably under 60-65 ℃ temperature with suitable dispersal device such as Ultraturrax type supraton or stator-rotor homogenizer with mixture homogenization.After reaching uniform state, composition cools is arrived room temperature.3. thin paper to be processed

According to the present invention, can preferably use wrinkling thin paper with in described wrinkling or " not having wrinkle " the thin paper lotionization that obtains with the urgent transfer techniques of wet method of " background technology " part.Thin paper (or the final tissue paper product that obtains thus) can be single or multiple lift (generally being the 2-6 layer).The permeability of lotion is specially adapted to multi-ply tissue (or tissue paper product), especially for 4 layers of thin paper of handkerchief, because lotion almost can be evenly distributed on outer and the internal layer.Thin paper can be homogeneous or layering, wet pressing or (the TAD drying) that dry up.Thin paper comprises but is not defined as the ironed paper of felt, the fine and close thin paper of embossing, uncompacted thin paper or closely knit thin paper.

Produce the raw material normally fibrous cellulosic material, particularly paper pulp of thin paper.But, if with linter or cotton thread as the raw material of producing thin paper, no longer need the slurrying step usually.Because its morphosis, so cellulose is Already under the open state.

The initial paper pulp that uses relates to primary fiber material (former paper pulp) or secondary stock material, and the secondary stock material is defined as the fibrous raw material that reclaims from reclaim technology.The primary fiber material not only relates to chemical digestion paper pulp but also relate to mechanical pulp such as hot refiner mechanical pulp (TMP), chemical heat refiner mechanical pulp (CTMP) or the hot refiner mechanical pulp of high temeperature chemistry (HTCTMP).Also can use the fiber that contains synthetic cellulose.But be that a preferred example providing is to use the paper pulp from vegetable material, particularly from the paper pulp of Woody plant.For example, can use fiber from cork (usually from coniferous tree), hardwood (usually from deciduous tree) or cotton linter.Also can be used for from Spanish grass (Esparto) (α), bagasse (millet straw, straw, bamboo, hemp), rob the fiber in the wooden and cellulose fibre source of flax fibre, flax and other as raw material.Select corresponding fibre source in mode well known in the prior art according to end properties.For example, can give finished product with advantages of higher stability with its higher diameter/length ratio than the fiber in the short hardwood of the fiber in the cork.If improve the pliability (this is important for thin paper) of product, eucalyptus wood is especially suitable for use as fibre source.

When paying close attention to the pliability of product, the chemical former paper pulp of also preferred use, thus can use full bleaching, partial bleaching and unbleached fiber.Wherein, be applicable to that the former paper pulp of chemistry of the present invention comprises for example sulfite pulp, kraft pulp (sulfate process).

Former paper pulp is being used for can also advantageously carrying out delignification before thin paper prepares industry in different processing steps, perhaps removes lignin more in large quantities with bleaching behind digesting technoloy and obtains the paper pulp of abundant boiling.

A kind of technology of preferred production thin paper is used

A comprise headbox and silk screen position formation part (, generally using paper pulp) with fibrous cellulosic material wet-laying and

B drying nest (TAD (passing through air drying) or the traditional drying on Yankee dryer) also comprises wrinkling operation essential for thin paper usually.

General also have

C detects and wrapping range.

Can form thin paper with following method: fiber is placed one of paper machine continuously on the silk screen of rotation or place two continuously between the silk screens of rotation with orientation or random fashion, remove most of dilution water simultaneously, generally proceeding to dry solids content is 12-35%.For wet strength or dry strength or other performance of improving the finished product thin paper, can comprise additive in the paper batching.

With machinery and firing equipment the primary fiber net that forms is carried out drying in one or more steps, generally proceeding to dry solids content is 93-97%.Under the situation of preparation thin paper, the step after this step is wrinkling operation, and this operation has material impact to the performance of finished product thin paper in traditional handicraft.Traditional dry creping is included on the dry cylinder of so-called Yankee dryer that diameter is a 4.5-6 rice carries out wrinkling (if lower to the thin paper quality requirement, can use wet crepe) with creping doctor to former (" raw material the thin paper ") thin paper with above-mentioned dry solids content.Can obtain wrinkling, final dry former thin paper then, be used for the paper product or the tissue paper product of additional processing cost invention.

Different with above-mentioned traditional preparation thin paper technology, the present invention preferentially uses a kind of change technology, wherein, improves specific volume with a kind of special drying means in process portion b, and the loose pliability of the thin paper that obtains is improved.This predrying technology that is present in the various subgroups is called TAD (passing through air drying) technology.It is characterized in that: " once " fiber web (being similar to nonwoven fabric) that leaves the thin slice making step carries out being about 80% by predrying to dry solids content by making hot-air blow over fibroreticulate mode before the final contact drying on Yankee dryer.Fiber web is subjected to the gas permeability silk screen or silk ribbon supports, and leads on gas permeability Rotary drying drum surface in its transport process.The structure of design supporting printing fiber or silk ribbon, can obtain having closely knit and uncompacted zone of any pattern by the fiber under the deflection dampness, carry out predrying (TAD step) then, make net through the slit between pressure roller and the Yankee dryer surface, thereby improve average specific volume, thereby under the condition that does not reduce fiber web intensity, improve loose pliability.

Another may influence the pliability of former thin paper and the factor of intensity is the production of press strip, wherein, headbox with special construction is piled into the different fibrous material layer of physical aspect with the primary fiber net that forms, and these layers combine when paper pulp is spurted into formative stage.

Usually on Yankee dryer with the creping doctor drying wrinkling be generally described as " thin paper " by paper machine production and by the individual layer intermediate products that light weight papers is made, perhaps be called former thin paper more accurately.The former thin paper of individual layer can be formed by one or more stacked adding respectively.

Make and according to end user's needs and all single or multiple lift final products of cutting, that is, all single or multiple lift final products of producing according to various demands all are called " tissue paper product " by former thin paper.

When fiber web or former thin paper were processed into final tissue paper product, following processing step can separately or be used in combination usually: be cut into suitable dimension (vertically and/or laterally cutting out), produce a plurality of layers, produce machinery and/or chemical ply adhesion, volume and structure embossing, folding, printing, punching, apply lotion, level and smooth, pile up, reel.

In order to produce multi-ply tissue product such as handkerchief, toilet paper, napkin or napkin paper, preferably be called the intermediate steps that doubles, wherein, the former thin paper with the required number of plies of finished product accumulates on the conventional multilayer home roll usually.

The step that former thin paper in several layers is processed into the thin paper finished product that will be randomly be wound on that takes place in processing machine comprises a plurality of operational sequences, as fully level and smooth thin paper, edge embossed to whole area in conjunction with and/or the local degree of using binding agent to make the ply adhesion that each layer (former thin paper) combines with generation, and vertically cutting, folding, laterally cutting, place, make a plurality of thin papers together, packing, and make them form bigger bag or bundle together.Also can be with single ply of paper net precreping, then according to pin to pin or many nests method (nested method) in roll gap with its combination.

Can in multi-ply tissue, produce ply adhesion with embossing.Do not reduce ply adhesion in order to ensure lotion, can embossed area not handled.In addition, from US4867831 as can be known: the thermoplastic with fusion can produce the interlayer combination the lotion thin paper.

The thin paper finished product that uses lotion thin paper of the present invention preferably health finished product (as toilet paper), paper handkerchief, beauty treatment is wiped (facial with) or napkin/napkin paper.Be preferred for handkerchief.

According to the present invention, be with the quantitatively 10-40g/m preferably of each layer of the thin paper of lotion-treated ², more preferably 12-20g/m ², 13-17g/m particularly ², total quantitative (comprising all layers that do not have lotion) be 10-80g/m normally ²4. on thin paper, apply lotion

As mentioned above, after the gauze drying, apply lotion usually.For example, proper time point be just will net dry back, with before forming the thin paper finished product before the synthetic a plurality of layers of each anastomose or with the multilayer net.But preferably, earlier at least two individual layer nets are superimposed as the multilayer net, apply lotion then.For the thin paper that has two or more layers, said composition can be coated on each layer, also can only be coated on one or two skin.In the production method of 4 layers of thin paper of preferred lotionization (product), only with a side lotionization of two 2 layers of nets, the untreated side with said 2 layers of net combines then, thereby obtains 4 layers of product respectively.In general, preferably make detergent composition be coated at least one of multi-layer thin gauze, on preferred two skins, because the advantage of doing like this is to distribute as far as possible equably on (vertical direction) by the Z at multi-ply tissue the permeability of detergent composition is represented fully.Before or after applying detergent composition, can form pattern to single layer or sandwich construction.Suitable paint-on technique comprises spraying, photogravure or aniline printing or has the cylinder coating of smooth surface with usefulness.Before being coated in detergent composition on the gauze,, specifically, be heated to 30-50 ℃ temperature preferably with the detergent composition slightly heated.

Every m ²The coated weight of lotion 3-10g preferably on the treatment surface promptly, if apply two surfaces, then preferably doubles the coated weight of detergent composition.The weight ratio of detergent composition/thin paper (single or multiple lift) is 10-40% preferably, more preferably 21-35%, particularly 25-30%.When weight ratio is 22-30%, particularly during 27-29%, can observe detergent composition has good in 4 layers of product and distributes uniformly.5. embodiment

Preparation at room temperature contains the detergent composition of following compositions as mentioned above.

Table 1

Component	????wt％
		Cocounut oil glyceride (cocoglyceride)	????20.4
Two caprylyl ethers	????20.4
		Polyglycereol poly-(12-hydroxy stearic acid ester) (PGPH)	????20.4
The D-sorbite sesquioleate	????4.8
		Cera alba (beeswax)	????3.4
Two cocoyl pentaerythrite base distearyl citrates (DPDC)	????2.0
		Aluminum stearate	????3.4
Bisabolol	????1.5
		Glycerine (99.5%)	????7.0
Spices	????0.5
		Preservative agent (methyl chloride isothiazoline/methylisothiazolinone (3/1))	????0.1
Water	Be added into 100

The viscosity of this detergent composition in the time of 23 ℃ be about 3000mPas (with axle speed be 5, the measurement of Bu Shi (Brookfield) the RVF viscosimeter of 10rpm).

This detergent composition is heated to about 40 ℃, with the heliogravure device it is coated in the both sides of 4 layers of net, the coated weight of each side is 7g/m ²Then these 4 layers of nets are splitted into 4 nets, spraying adhesive on the corresponding site of 3 nets.The anastomose that will be coated with binding agent once more lumps together, and (total coated weight of lotion is 14g/m thereby obtain all having on two outsides 4 layers of net of lamination of lotion ²).Corresponding but untreated 4 layers of net quantitatively be 61.2g/m ², thickness is 0.34mm, bulk density is 5.6cm ³/ g.This lotion coated weight that will cause based on 4 layers of thin paper weight is 22.8wt%.

Measure the permeability of lotion with following method.From 4 layers of net of lotionization, get the sample that weight is 60g.This sample is splitted into single layer.Each the individual layer sample that in Soxhlet (Soxhlet) device, obtains with the 300ml ethanol extraction (78 ℃, 6h), then also in Soxhlet (Soxhlet) is installed with the 300ml carrene extract (40 ℃, 6h).These extracting operations carry out when just applying detergent composition, then to the new test specimen that from 4 layers of net, obtains with the same manner after 2 hours, repeat extracting operation after 1 day and after 7 days.

The lotion amount that contains in the single layer can be thought the residue sum in the ethanol and dichloromethane extract after the solvent evaporated (should be noted that: this assay method does not cover the water content in the lotion, but can with above-mentioned Fischer method mensuration water content).

Measurement result is shown in following table 2.

Table 2

Sample		0 hour	2 hours	1 day	7 days
						Ground floor	Ethanol	??12.00％	??13.50％	??16.60％	??14.90％
??DCM	??6.20％	??6.40％	??9.30％	??2.70％
					Lotion		??18.20％	??19.90％	??25.90％	??17.60％
The second layer	Ethanol	??6.10％	??7.30％	??9.20％							??10.50％
					??DCM	??1.10％	??1.60％	??1.70％	??2.70％
	Lotion	??7.30％	??8.90％	??10.90％						??13.10％
					The 3rd layer	Ethanol	??2.90％	??7.90％	??9.00％		??9.80％
??DCM	??0.80％	??1.80％	??1.90％	??3.30％
						Lotion	??3.70％	??9.70％	??10.90％	??13.10％
The 4th layer	Ethanol	??17.50％	??15.70％	??13.80％							??12.20％
					??DCM	??9.40％	??6.60％	??4.70％	??5.30％
	Lotion	??26.90％	??22.30％	??18.50％						??17.50％

This is expressed: after 7 days, lotion of the present invention almost completely infiltrates internal layer.Lotion content difference between outer (ground floor and the 4th layer) and the internal layer (second layer and the 3rd layer) is about the 20-30% of outer lotion content.Can expect: if lotion thin paper net stores the time more than 7 days, then this difference also can reduce.

Lotion thin paper of the present invention also demonstrates excellent soft surface degree, particularly loose pliability.Can also lotion be transferred on user's the skin effectively simultaneously.

Claims (12)

1, infiltration has the thin paper of detergent composition, and this detergent composition is a liquid viscosity W/O emulsion, and it comprises:

(A) at least a oil of 20-75wt%,

(B) at least a nonionic W/O emulsifying agent of 3-40wt%,

(C) at least a wax of Ren Xuan 0.5-10wt%,

(D) at least a wetting agent of 1-15wt%,

(E) water of 6-25wt%, wherein, wt% is based on the value of detergent composition gross weight.

2, according to the thin paper of claim 1, it is characterized in that: oil ingredient (A) comprises that at least a viscosity of measuring with Hoppler viscosimeter (DGF C-IV 7 methods) is lower than the oil (A ') of 30mPas in the time of 20 ℃.

3, according to the thin paper of claim 1 or 2, it is characterized in that: oil ingredient (A) comprises and at least aly is selected from symmetry with 12-24 carbon atom or the basic ether of asymmetric dioxane (alkene) and derived from the liquid oils (A ') of the basic carbonic acid ester of straight or branched dioxane (alkene) of C6-22 fatty alcohol.

4, the thin paper that requires according to arbitrary aforesaid right is characterized in that: oil ingredient (A) comprise at least a in the time of 20 ℃ with the viscosity of Hoppler viscosimeter (DGF C-IV 7 methods) mensuration greater than 30mPas and be not more than the oil (A ") of 100mPas.

5, according to the thin paper of claim 1 or 4, it is characterized in that: oil ingredient (A) comprises at least a liquid oils (A ") that is selected from glyceride, glycerine ester group natural oil and alkyl oil.

6, the thin paper that requires according to arbitrary aforesaid right is characterized in that: oil ingredient (A) comprises and at least aly is selected from the symmetrical or basic ether of asymmetric dioxane (alkene) with 12-24 carbon atom and derived from the liquid oils (A ') and at least a liquid oils (mixture of A ") that is selected from glyceride, natural oil and alkyl oil of the basic carbonic acid ester of straight or branched dioxane (alkene) of C6-22 fatty alcohol.

7, according to the thin paper of arbitrary claim 1-6, it is characterized in that: non-ionic surface active agent (B) comprises liquid polyol polyester, wherein, has the polyalcohol of two hydroxyls at least with at least a acid estersization with 6-30 carbon atom.

8, according to the thin paper of claim 7, it is characterized in that: said polyol polyester is polyglycereol poly-(a 12-hydroxy stearic acid ester).

9, according to the thin paper of arbitrary claim 1-8, it is characterized in that: lotion also comprises the liquid ester as sugar alcohol or its acid anhydride of coemulsifier.

10, according to the thin paper of arbitrary claim 1-9, it is characterized in that: said composition contains greater than 0.5wt% but less than the wax of 5wt%.

11, according to the thin paper of arbitrary claim 1-10, it is characterized in that: wetting agent is a glycerine.

12, according to the thin paper of claim 1, it is characterized in that: detergent composition comprises:

The basic ether of liquid dioxane (alkene) of (A ') 15-30wt% with 12-24 carbon atom,

(usefulness of A ") 15-30wt% has the liquid glyceride that at least a acid esters glycerine of 6-24 carbon atom obtains,

(B) the W/O emulsifying agent of 15-30wt%, it is selected from the liquid polyol polyester that has at least the polyalcohol of two hydroxyls to obtain with at least a acid estersization with 6-30 carbon atom,

(C) wax of 0.5-4wt%,

(D) wetting agent of 5-10wt%,

(E) water of 12-20wt%,

(F) metallic soap of Ren Xuan 0.5-5wt%,

(G) the Ren Xuan at least a coemulsifier that reaches as high as 15wt%,

(H) additive of Ren Xuan 0.1-5wt%.